Move existing compile errors to independent files

Some cases had to stay behind, either because they required complex case
configuration that we don't support in independent files yet, or because
they have associated comments which we don't want to lose track of.

To make sure I didn't drop any tests in the process, I logged all
obj/test/exe test cases from a run of "zig build test" and compared
before/after this change.

All of the test cases match, with two exceptions:
 - "use of comptime-known undefined function value" was deleted, since
   it was a duplicate
 - "slice sentinel mismatch" was renamed to "vector index out of
   bounds", since it was incorrectly named

654 files changed, 7886 insertions, 0 deletions

diff --git a/test/compile_errors/stage1/exe/main_missing_name.zig b/test/compile_errors/stage1/exe/main_missing_name.zig
new file mode 100644
index 0000000000..c029665367
--- /dev/null
+++ b/test/compile_errors/stage1/exe/main_missing_name.zig
@@ -0,0 +1,5 @@
+pub fn (main) void {}
+
+// main missing name
+//
+// tmp.zig:1:5: error: missing function name
diff --git a/test/compile_errors/stage1/exe/missing_main_fn_in_executable.zig b/test/compile_errors/stage1/exe/missing_main_fn_in_executable.zig
new file mode 100644
index 0000000000..eb9ab469fd
--- /dev/null
+++ b/test/compile_errors/stage1/exe/missing_main_fn_in_executable.zig
@@ -0,0 +1,5 @@
+
+
+// missing main fn in executable
+//
+// error: root source file has no member called 'main'
diff --git a/test/compile_errors/stage1/exe/private_main_fn.zig b/test/compile_errors/stage1/exe/private_main_fn.zig
new file mode 100644
index 0000000000..da617899a5
--- /dev/null
+++ b/test/compile_errors/stage1/exe/private_main_fn.zig
@@ -0,0 +1,6 @@
+fn main() void {}
+
+// private main fn
+//
+// error: 'main' is private
+// tmp.zig:1:1: note: declared here
diff --git a/test/compile_errors/stage1/exe/std.fmt_error_for_unused_arguments.zig b/test/compile_errors/stage1/exe/std.fmt_error_for_unused_arguments.zig
new file mode 100644
index 0000000000..7da78d5b03
--- /dev/null
+++ b/test/compile_errors/stage1/exe/std.fmt_error_for_unused_arguments.zig
@@ -0,0 +1,7 @@
+pub fn main() !void {
+    @import("std").debug.print("{d} {d} {d} {d} {d}", .{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15});
+}
+
+// std.fmt error for unused arguments
+//
+// ?:?:?: error: 10 unused arguments in '{d} {d} {d} {d} {d}'
diff --git a/test/compile_errors/stage1/obj/C_pointer_pointing_to_non_C_ABI_compatible_type_or_has_align_attr.zig b/test/compile_errors/stage1/obj/C_pointer_pointing_to_non_C_ABI_compatible_type_or_has_align_attr.zig
new file mode 100644
index 0000000000..24fd0d1b9f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/C_pointer_pointing_to_non_C_ABI_compatible_type_or_has_align_attr.zig
@@ -0,0 +1,10 @@
+const Foo = struct {};
+export fn a() void {
+    const T = [*c]Foo;
+    var t: T = undefined;
+    _ = t;
+}
+
+// C pointer pointing to non C ABI compatible type or has align attr
+//
+// tmp.zig:3:19: error: C pointers cannot point to non-C-ABI-compatible type 'Foo'
diff --git a/test/compile_errors/stage1/obj/C_pointer_to_anyopaque.zig b/test/compile_errors/stage1/obj/C_pointer_to_anyopaque.zig
new file mode 100644
index 0000000000..3012996145
--- /dev/null
+++ b/test/compile_errors/stage1/obj/C_pointer_to_anyopaque.zig
@@ -0,0 +1,9 @@
+export fn a() void {
+    var x: *anyopaque = undefined;
+    var y: [*c]anyopaque = x;
+    _ = y;
+}
+
+// C pointer to anyopaque
+//
+// tmp.zig:3:16: error: C pointers cannot point to opaque types
diff --git a/test/compile_errors/stage1/obj/Frame_of_generic_function.zig b/test/compile_errors/stage1/obj/Frame_of_generic_function.zig
new file mode 100644
index 0000000000..b9b2280dd7
--- /dev/null
+++ b/test/compile_errors/stage1/obj/Frame_of_generic_function.zig
@@ -0,0 +1,12 @@
+export fn entry() void {
+    var frame: @Frame(func) = undefined;
+    _ = frame;
+}
+fn func(comptime T: type) void {
+    var x: T = undefined;
+    _ = x;
+}
+
+// @Frame() of generic function
+//
+// tmp.zig:2:16: error: @Frame() of generic function
diff --git a/test/compile_errors/stage1/obj/Issue_5586_Make_unary_minus_for_unsigned_types_a_compile_error.zig b/test/compile_errors/stage1/obj/Issue_5586_Make_unary_minus_for_unsigned_types_a_compile_error.zig
new file mode 100644
index 0000000000..d01e68e4eb
--- /dev/null
+++ b/test/compile_errors/stage1/obj/Issue_5586_Make_unary_minus_for_unsigned_types_a_compile_error.zig
@@ -0,0 +1,14 @@
+export fn f1(x: u32) u32 {
+    const y = -%x;
+    return -y;
+}
+const V = @import("std").meta.Vector;
+export fn f2(x: V(4, u32)) V(4, u32) {
+    const y = -%x;
+    return -y;
+}
+
+// Issue #5586: Make unary minus for unsigned types a compile error
+//
+// tmp.zig:3:12: error: negation of type 'u32'
+// tmp.zig:8:12: error: negation of type 'u32'
diff --git a/test/compile_errors/stage1/obj/Issue_6823_dont_allow_._to_be_followed_by_.zig b/test/compile_errors/stage1/obj/Issue_6823_dont_allow_._to_be_followed_by_.zig
new file mode 100644
index 0000000000..c21df43362
--- /dev/null
+++ b/test/compile_errors/stage1/obj/Issue_6823_dont_allow_._to_be_followed_by_.zig
@@ -0,0 +1,8 @@
+fn foo() void {
+    var sequence = "repeat".*** 10;
+    _ = sequence;
+}
+
+// Issue #6823: don't allow .* to be followed by **
+//
+// tmp.zig:2:28: error: '.*' cannot be followed by '*'. Are you missing a space?
diff --git a/test/compile_errors/stage1/obj/Issue_9165_windows_tcp_server_compilation_error.zig b/test/compile_errors/stage1/obj/Issue_9165_windows_tcp_server_compilation_error.zig
new file mode 100644
index 0000000000..e3b9d4b009
--- /dev/null
+++ b/test/compile_errors/stage1/obj/Issue_9165_windows_tcp_server_compilation_error.zig
@@ -0,0 +1,14 @@
+const std = @import("std");
+const builtin = @import("builtin");
+pub const io_mode = .evented;
+pub fn main() !void {
+    if (builtin.os.tag == .windows) {
+        _ = try (std.net.StreamServer.init(.{})).accept();
+    } else {
+        @compileError("Unsupported OS");
+    }
+}
+
+// Issue #9165: windows tcp server compilation error
+//
+// error: Unsupported OS
diff --git a/test/compile_errors/stage1/obj/access_non-existent_member_of_error_set.zig b/test/compile_errors/stage1/obj/access_non-existent_member_of_error_set.zig
new file mode 100644
index 0000000000..42a54b08cd
--- /dev/null
+++ b/test/compile_errors/stage1/obj/access_non-existent_member_of_error_set.zig
@@ -0,0 +1,9 @@
+const Foo = error{A};
+comptime {
+    const z = Foo.Bar;
+    _ = z;
+}
+
+// access non-existent member of error set
+//
+// tmp.zig:3:18: error: no error named 'Bar' in 'Foo'
diff --git a/test/compile_errors/stage1/obj/accessing_runtime_parameter_from_outer_function.zig b/test/compile_errors/stage1/obj/accessing_runtime_parameter_from_outer_function.zig
new file mode 100644
index 0000000000..68b23c6a43
--- /dev/null
+++ b/test/compile_errors/stage1/obj/accessing_runtime_parameter_from_outer_function.zig
@@ -0,0 +1,19 @@
+fn outer(y: u32) fn (u32) u32 {
+    const st = struct {
+        fn get(z: u32) u32 {
+            return z + y;
+        }
+    };
+    return st.get;
+}
+export fn entry() void {
+    var func = outer(10);
+    var x = func(3);
+    _ = x;
+}
+
+// accessing runtime parameter from outer function
+//
+// tmp.zig:4:24: error: 'y' not accessible from inner function
+// tmp.zig:3:28: note: crossed function definition here
+// tmp.zig:1:10: note: declared here
diff --git a/test/compile_errors/stage1/obj/add_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/add_assign_on_undefined_value.zig
new file mode 100644
index 0000000000..0076cf1bab
--- /dev/null
+++ b/test/compile_errors/stage1/obj/add_assign_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    a += a;
+}
+
+// add assign on undefined value
+//
+// tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/add_on_undefined_value.zig b/test/compile_errors/stage1/obj/add_on_undefined_value.zig
new file mode 100644
index 0000000000..5f64c6999b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/add_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    _ = a + a;
+}
+
+// add on undefined value
+//
+// tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/add_overflow_in_function_evaluation.zig b/test/compile_errors/stage1/obj/add_overflow_in_function_evaluation.zig
new file mode 100644
index 0000000000..b01e005a04
--- /dev/null
+++ b/test/compile_errors/stage1/obj/add_overflow_in_function_evaluation.zig
@@ -0,0 +1,10 @@
+const y = add(65530, 10);
+fn add(a: u16, b: u16) u16 {
+    return a + b;
+}
+
+export fn entry() usize { return @sizeOf(@TypeOf(y)); }
+
+// add overflow in function evaluation
+//
+// tmp.zig:3:14: error: operation caused overflow
diff --git a/test/compile_errors/stage1/obj/add_wrap_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/add_wrap_assign_on_undefined_value.zig
new file mode 100644
index 0000000000..37dbf9106f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/add_wrap_assign_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    a +%= a;
+}
+
+// add wrap assign on undefined value
+//
+// tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/add_wrap_on_undefined_value.zig b/test/compile_errors/stage1/obj/add_wrap_on_undefined_value.zig
new file mode 100644
index 0000000000..3ba9bd11c6
--- /dev/null
+++ b/test/compile_errors/stage1/obj/add_wrap_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    _ = a +% a;
+}
+
+// add wrap on undefined value
+//
+// tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/addition_with_non_numbers.zig b/test/compile_errors/stage1/obj/addition_with_non_numbers.zig
new file mode 100644
index 0000000000..296b9f4103
--- /dev/null
+++ b/test/compile_errors/stage1/obj/addition_with_non_numbers.zig
@@ -0,0 +1,10 @@
+const Foo = struct {
+    field: i32,
+};
+const x = Foo {.field = 1} + Foo {.field = 2};
+
+export fn entry() usize { return @sizeOf(@TypeOf(x)); }
+
+// addition with non numbers
+//
+// tmp.zig:4:28: error: invalid operands to binary expression: 'Foo' and 'Foo'
diff --git a/test/compile_errors/stage1/obj/address_of_number_literal.zig b/test/compile_errors/stage1/obj/address_of_number_literal.zig
new file mode 100644
index 0000000000..ee61f2180f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/address_of_number_literal.zig
@@ -0,0 +1,8 @@
+const x = 3;
+const y = &x;
+fn foo() *const i32 { return y; }
+export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
+
+// address of number literal
+//
+// tmp.zig:3:30: error: expected type '*const i32', found '*const comptime_int'
diff --git a/test/compile_errors/stage1/obj/alignCast_expects_pointer_or_slice.zig b/test/compile_errors/stage1/obj/alignCast_expects_pointer_or_slice.zig
new file mode 100644
index 0000000000..91b269cef4
--- /dev/null
+++ b/test/compile_errors/stage1/obj/alignCast_expects_pointer_or_slice.zig
@@ -0,0 +1,7 @@
+export fn entry() void {
+    @alignCast(4, @as(u32, 3));
+}
+
+// @alignCast expects pointer or slice
+//
+// tmp.zig:2:19: error: expected pointer or slice, found 'u32'
diff --git a/test/compile_errors/stage1/obj/aligned_variable_of_zero-bit_type.zig b/test/compile_errors/stage1/obj/aligned_variable_of_zero-bit_type.zig
new file mode 100644
index 0000000000..90e690056d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/aligned_variable_of_zero-bit_type.zig
@@ -0,0 +1,8 @@
+export fn f() void {
+    var s: struct {} align(4) = undefined;
+    _ = s;
+}
+
+// aligned variable of zero-bit type
+//
+// tmp.zig:2:5: error: variable 's' of zero-bit type 'struct:2:12' has no in-memory representation, it cannot be aligned
diff --git a/test/compile_errors/stage1/obj/alignment_of_enum_field_specified.zig b/test/compile_errors/stage1/obj/alignment_of_enum_field_specified.zig
new file mode 100644
index 0000000000..cf5cdfd213
--- /dev/null
+++ b/test/compile_errors/stage1/obj/alignment_of_enum_field_specified.zig
@@ -0,0 +1,12 @@
+const Number = enum {
+    a,
+    b align(i32),
+};
+export fn entry1() void {
+    var x: Number = undefined;
+    _ = x;
+}
+
+// alignment of enum field specified
+//
+// tmp.zig:3:7: error: expected ',' after field
diff --git a/test/compile_errors/stage1/obj/ambiguous_decl_reference.zig b/test/compile_errors/stage1/obj/ambiguous_decl_reference.zig
new file mode 100644
index 0000000000..421c41d2c2
--- /dev/null
+++ b/test/compile_errors/stage1/obj/ambiguous_decl_reference.zig
@@ -0,0 +1,19 @@
+fn foo() void {}
+fn bar() void {
+    const S = struct {
+        fn baz() void {
+            foo();
+        }
+        fn foo() void {}
+    };
+    S.baz();
+}
+export fn entry() void {
+    bar();
+}
+
+// ambiguous decl reference
+//
+// tmp.zig:5:13: error: ambiguous reference
+// tmp.zig:7:9: note: declared here
+// tmp.zig:1:1: note: also declared here
diff --git a/test/compile_errors/stage1/obj/and_on_undefined_value.zig b/test/compile_errors/stage1/obj/and_on_undefined_value.zig
new file mode 100644
index 0000000000..82363848f3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/and_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: bool = undefined;
+    _ = a and a;
+}
+
+// and on undefined value
+//
+// tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/array_access_of_non_array.zig b/test/compile_errors/stage1/obj/array_access_of_non_array.zig
new file mode 100644
index 0000000000..e4420debcd
--- /dev/null
+++ b/test/compile_errors/stage1/obj/array_access_of_non_array.zig
@@ -0,0 +1,13 @@
+export fn f() void {
+    var bad : bool = undefined;
+    bad[0] = bad[0];
+}
+export fn g() void {
+    var bad : bool = undefined;
+    _ = bad[0];
+}
+
+// array access of non array
+//
+// tmp.zig:3:8: error: array access of non-array type 'bool'
+// tmp.zig:7:12: error: array access of non-array type 'bool'
diff --git a/test/compile_errors/stage1/obj/array_access_of_type.zig b/test/compile_errors/stage1/obj/array_access_of_type.zig
new file mode 100644
index 0000000000..82708eed6c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/array_access_of_type.zig
@@ -0,0 +1,8 @@
+export fn foo() void {
+    var b: u8[40] = undefined;
+    _ = b;
+}
+
+// array access of type
+//
+// tmp.zig:2:14: error: array access of non-array type 'type'
diff --git a/test/compile_errors/stage1/obj/array_access_of_undeclared_identifier.zig b/test/compile_errors/stage1/obj/array_access_of_undeclared_identifier.zig
new file mode 100644
index 0000000000..193a7bf5de
--- /dev/null
+++ b/test/compile_errors/stage1/obj/array_access_of_undeclared_identifier.zig
@@ -0,0 +1,7 @@
+export fn f() void {
+    i[i] = i[i];
+}
+
+// array access of undeclared identifier
+//
+// tmp.zig:2:5: error: use of undeclared identifier 'i'
diff --git a/test/compile_errors/stage1/obj/array_access_with_non_integer_index.zig b/test/compile_errors/stage1/obj/array_access_with_non_integer_index.zig
new file mode 100644
index 0000000000..1a3e17d896
--- /dev/null
+++ b/test/compile_errors/stage1/obj/array_access_with_non_integer_index.zig
@@ -0,0 +1,15 @@
+export fn f() void {
+    var array = "aoeu";
+    var bad = false;
+    array[bad] = array[bad];
+}
+export fn g() void {
+    var array = "aoeu";
+    var bad = false;
+    _ = array[bad];
+}
+
+// array access with non integer index
+//
+// tmp.zig:4:11: error: expected type 'usize', found 'bool'
+// tmp.zig:9:15: error: expected type 'usize', found 'bool'
diff --git a/test/compile_errors/stage1/obj/array_concatenation_with_wrong_type.zig b/test/compile_errors/stage1/obj/array_concatenation_with_wrong_type.zig
new file mode 100644
index 0000000000..91036e5f25
--- /dev/null
+++ b/test/compile_errors/stage1/obj/array_concatenation_with_wrong_type.zig
@@ -0,0 +1,9 @@
+const src = "aoeu";
+const derp: usize = 1234;
+const a = derp ++ "foo";
+
+export fn entry() usize { return @sizeOf(@TypeOf(a)); }
+
+// array concatenation with wrong type
+//
+// tmp.zig:3:11: error: expected array, found 'usize'
diff --git a/test/compile_errors/stage1/obj/array_in_c_exported_function.zig b/test/compile_errors/stage1/obj/array_in_c_exported_function.zig
new file mode 100644
index 0000000000..fe03d220b1
--- /dev/null
+++ b/test/compile_errors/stage1/obj/array_in_c_exported_function.zig
@@ -0,0 +1,12 @@
+export fn zig_array(x: [10]u8) void {
+    try std.testing.expect(std.mem.eql(u8, &x, "1234567890"));
+}
+const std = @import("std");
+export fn zig_return_array() [10]u8 {
+    return "1234567890".*;
+}
+
+// array in c exported function
+//
+// tmp.zig:1:24: error: parameter of type '[10]u8' not allowed in function with calling convention 'C'
+// tmp.zig:5:30: error: return type '[10]u8' not allowed in function with calling convention 'C'
diff --git a/test/compile_errors/stage1/obj/asm_at_compile_time.zig b/test/compile_errors/stage1/obj/asm_at_compile_time.zig
new file mode 100644
index 0000000000..e08b500c6e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/asm_at_compile_time.zig
@@ -0,0 +1,15 @@
+comptime {
+    doSomeAsm();
+}
+
+fn doSomeAsm() void {
+    asm volatile (
+        \\.globl aoeu;
+        \\.type aoeu, @function;
+        \\.set aoeu, derp;
+    );
+}
+
+// asm at compile time
+//
+// tmp.zig:6:5: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/assign_inline_fn_to_non-comptime_var.zig b/test/compile_errors/stage1/obj/assign_inline_fn_to_non-comptime_var.zig
new file mode 100644
index 0000000000..aa7bb91d1b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/assign_inline_fn_to_non-comptime_var.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    var a = b;
+    _ = a;
+}
+fn b() callconv(.Inline) void { }
+
+// assign inline fn to non-comptime var
+//
+// tmp.zig:2:5: error: functions marked inline must be stored in const or comptime var
+// tmp.zig:5:1: note: declared here
diff --git a/test/compile_errors/stage1/obj/assign_null_to_non-optional_pointer.zig b/test/compile_errors/stage1/obj/assign_null_to_non-optional_pointer.zig
new file mode 100644
index 0000000000..9c1aaf5031
--- /dev/null
+++ b/test/compile_errors/stage1/obj/assign_null_to_non-optional_pointer.zig
@@ -0,0 +1,7 @@
+const a: *u8 = null;
+
+export fn entry() usize { return @sizeOf(@TypeOf(a)); }
+
+// assign null to non-optional pointer
+//
+// tmp.zig:1:16: error: expected type '*u8', found '@Type(.Null)'
diff --git a/test/compile_errors/stage1/obj/assign_through_constant_pointer.zig b/test/compile_errors/stage1/obj/assign_through_constant_pointer.zig
new file mode 100644
index 0000000000..452e3ea617
--- /dev/null
+++ b/test/compile_errors/stage1/obj/assign_through_constant_pointer.zig
@@ -0,0 +1,8 @@
+export fn f() void {
+  var cstr = "Hat";
+  cstr[0] = 'W';
+}
+
+// assign through constant pointer
+//
+// tmp.zig:3:13: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/obj/assign_through_constant_slice.zig b/test/compile_errors/stage1/obj/assign_through_constant_slice.zig
new file mode 100644
index 0000000000..e36991897b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/assign_through_constant_slice.zig
@@ -0,0 +1,8 @@
+export fn f() void {
+  var cstr: []const u8 = "Hat";
+  cstr[0] = 'W';
+}
+
+// assign through constant slice
+//
+// tmp.zig:3:13: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/obj/assign_to_constant_field.zig b/test/compile_errors/stage1/obj/assign_to_constant_field.zig
new file mode 100644
index 0000000000..f371655fb5
--- /dev/null
+++ b/test/compile_errors/stage1/obj/assign_to_constant_field.zig
@@ -0,0 +1,11 @@
+const Foo = struct {
+    field: i32,
+};
+export fn derp() void {
+    const f = Foo {.field = 1234,};
+    f.field = 0;
+}
+
+// assign to constant field
+//
+// tmp.zig:6:15: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/obj/assign_to_constant_variable.zig b/test/compile_errors/stage1/obj/assign_to_constant_variable.zig
new file mode 100644
index 0000000000..1e8dd6c06f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/assign_to_constant_variable.zig
@@ -0,0 +1,8 @@
+export fn f() void {
+    const a = 3;
+    a = 4;
+}
+
+// assign to constant variable
+//
+// tmp.zig:3:9: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/obj/assign_to_invalid_dereference.zig b/test/compile_errors/stage1/obj/assign_to_invalid_dereference.zig
new file mode 100644
index 0000000000..6466f7afc8
--- /dev/null
+++ b/test/compile_errors/stage1/obj/assign_to_invalid_dereference.zig
@@ -0,0 +1,7 @@
+export fn entry() void {
+    'a'.* = 1;
+}
+
+// assign to invalid dereference
+//
+// tmp.zig:2:8: error: attempt to dereference non-pointer type 'comptime_int'
diff --git a/test/compile_errors/stage1/obj/assign_too_big_number_to_u16.zig b/test/compile_errors/stage1/obj/assign_too_big_number_to_u16.zig
new file mode 100644
index 0000000000..13b5280588
--- /dev/null
+++ b/test/compile_errors/stage1/obj/assign_too_big_number_to_u16.zig
@@ -0,0 +1,8 @@
+export fn foo() void {
+    var vga_mem: u16 = 0xB8000;
+    _ = vga_mem;
+}
+
+// assign too big number to u16
+//
+// tmp.zig:2:24: error: integer value 753664 cannot be coerced to type 'u16'
diff --git a/test/compile_errors/stage1/obj/assign_unreachable.zig b/test/compile_errors/stage1/obj/assign_unreachable.zig
new file mode 100644
index 0000000000..78e2305abc
--- /dev/null
+++ b/test/compile_errors/stage1/obj/assign_unreachable.zig
@@ -0,0 +1,8 @@
+export fn f() void {
+    const a = return;
+}
+
+// assign unreachable
+//
+// tmp.zig:2:5: error: unreachable code
+// tmp.zig:2:15: note: control flow is diverted here
diff --git a/test/compile_errors/stage1/obj/assigning_to_struct_or_union_fields_that_are_not_optionals_with_a_function_that_returns_an_optional.zig b/test/compile_errors/stage1/obj/assigning_to_struct_or_union_fields_that_are_not_optionals_with_a_function_that_returns_an_optional.zig
new file mode 100644
index 0000000000..f93650821b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/assigning_to_struct_or_union_fields_that_are_not_optionals_with_a_function_that_returns_an_optional.zig
@@ -0,0 +1,19 @@
+fn maybe(is: bool) ?u8 {
+    if (is) return @as(u8, 10) else return null;
+}
+const U = union {
+    Ye: u8,
+};
+const S = struct {
+    num: u8,
+};
+export fn entry() void {
+    var u = U{ .Ye = maybe(false) };
+    var s = S{ .num = maybe(false) };
+    _ = u;
+    _ = s;
+}
+
+// assigning to struct or union fields that are not optionals with a function that returns an optional
+//
+// tmp.zig:11:27: error: cannot convert optional to payload type. consider using `.?`, `orelse`, or `if`. expected type 'u8', found '?u8'
diff --git a/test/compile_errors/stage1/obj/async_function_depends_on_its_own_frame.zig b/test/compile_errors/stage1/obj/async_function_depends_on_its_own_frame.zig
new file mode 100644
index 0000000000..0d1cd7f77e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/async_function_depends_on_its_own_frame.zig
@@ -0,0 +1,11 @@
+export fn entry() void {
+    _ = async amain();
+}
+fn amain() callconv(.Async) void {
+    var x: [@sizeOf(@Frame(amain))]u8 = undefined;
+    _ = x;
+}
+
+// async function depends on its own frame
+//
+// tmp.zig:4:1: error: cannot resolve '@Frame(amain)': function not fully analyzed yet
diff --git a/test/compile_errors/stage1/obj/async_function_indirectly_depends_on_its_own_frame.zig b/test/compile_errors/stage1/obj/async_function_indirectly_depends_on_its_own_frame.zig
new file mode 100644
index 0000000000..809409f524
--- /dev/null
+++ b/test/compile_errors/stage1/obj/async_function_indirectly_depends_on_its_own_frame.zig
@@ -0,0 +1,15 @@
+export fn entry() void {
+    _ = async amain();
+}
+fn amain() callconv(.Async) void {
+    other();
+}
+fn other() void {
+    var x: [@sizeOf(@Frame(amain))]u8 = undefined;
+    _ = x;
+}
+
+// async function indirectly depends on its own frame
+//
+// tmp.zig:4:1: error: unable to determine async function frame of 'amain'
+// tmp.zig:5:10: note: analysis of function 'other' depends on the frame
diff --git a/test/compile_errors/stage1/obj/atomic_orderings_of_atomicStore_Acquire_or_AcqRel.zig b/test/compile_errors/stage1/obj/atomic_orderings_of_atomicStore_Acquire_or_AcqRel.zig
new file mode 100644
index 0000000000..7d97c2813e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/atomic_orderings_of_atomicStore_Acquire_or_AcqRel.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    var x: u32 = 0;
+    @atomicStore(u32, &x, 1, .Acquire);
+}
+
+// atomic orderings of atomicStore Acquire or AcqRel
+//
+// tmp.zig:3:30: error: @atomicStore atomic ordering must not be Acquire or AcqRel
diff --git a/test/compile_errors/stage1/obj/atomic_orderings_of_cmpxchg-failure_stricter_than_success.zig b/test/compile_errors/stage1/obj/atomic_orderings_of_cmpxchg-failure_stricter_than_success.zig
new file mode 100644
index 0000000000..d6d9ab478b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/atomic_orderings_of_cmpxchg-failure_stricter_than_success.zig
@@ -0,0 +1,9 @@
+const AtomicOrder = @import("std").builtin.AtomicOrder;
+export fn f() void {
+    var x: i32 = 1234;
+    while (!@cmpxchgWeak(i32, &x, 1234, 5678, AtomicOrder.Monotonic, AtomicOrder.SeqCst)) {}
+}
+
+// atomic orderings of cmpxchg - failure stricter than success
+//
+// tmp.zig:4:81: error: failure atomic ordering must be no stricter than success
diff --git a/test/compile_errors/stage1/obj/atomic_orderings_of_cmpxchg-success_Monotonic_or_stricter.zig b/test/compile_errors/stage1/obj/atomic_orderings_of_cmpxchg-success_Monotonic_or_stricter.zig
new file mode 100644
index 0000000000..770c08f3fe
--- /dev/null
+++ b/test/compile_errors/stage1/obj/atomic_orderings_of_cmpxchg-success_Monotonic_or_stricter.zig
@@ -0,0 +1,9 @@
+const AtomicOrder = @import("std").builtin.AtomicOrder;
+export fn f() void {
+    var x: i32 = 1234;
+    while (!@cmpxchgWeak(i32, &x, 1234, 5678, AtomicOrder.Unordered, AtomicOrder.Unordered)) {}
+}
+
+// atomic orderings of cmpxchg - success Monotonic or stricter
+//
+// tmp.zig:4:58: error: success atomic ordering must be Monotonic or stricter
diff --git a/test/compile_errors/stage1/obj/atomic_orderings_of_fence_Acquire_or_stricter.zig b/test/compile_errors/stage1/obj/atomic_orderings_of_fence_Acquire_or_stricter.zig
new file mode 100644
index 0000000000..34ee200eeb
--- /dev/null
+++ b/test/compile_errors/stage1/obj/atomic_orderings_of_fence_Acquire_or_stricter.zig
@@ -0,0 +1,7 @@
+export fn entry() void {
+    @fence(.Monotonic);
+}
+
+// atomic orderings of fence Acquire or stricter
+//
+// tmp.zig:2:12: error: atomic ordering must be Acquire or stricter
diff --git a/test/compile_errors/stage1/obj/atomicrmw_with_bool_op_not_.Xchg.zig b/test/compile_errors/stage1/obj/atomicrmw_with_bool_op_not_.Xchg.zig
new file mode 100644
index 0000000000..03309737cf
--- /dev/null
+++ b/test/compile_errors/stage1/obj/atomicrmw_with_bool_op_not_.Xchg.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    var x = false;
+    _ = @atomicRmw(bool, &x, .Add, true, .SeqCst);
+}
+
+// atomicrmw with bool op not .Xchg
+//
+// tmp.zig:3:30: error: @atomicRmw with bool only allowed with .Xchg
diff --git a/test/compile_errors/stage1/obj/atomicrmw_with_enum_op_not_.Xchg.zig b/test/compile_errors/stage1/obj/atomicrmw_with_enum_op_not_.Xchg.zig
new file mode 100644
index 0000000000..95e6a7d95d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/atomicrmw_with_enum_op_not_.Xchg.zig
@@ -0,0 +1,14 @@
+export fn entry() void {
+    const E = enum(u8) {
+        a,
+        b,
+        c,
+        d,
+    };
+    var x: E = .a;
+    _ = @atomicRmw(E, &x, .Add, .b, .SeqCst);
+}
+
+// atomicrmw with enum op not .Xchg
+//
+// tmp.zig:9:27: error: @atomicRmw with enum only allowed with .Xchg
diff --git a/test/compile_errors/stage1/obj/atomicrmw_with_float_op_not_.Xchg_.Add_or_.Sub.zig b/test/compile_errors/stage1/obj/atomicrmw_with_float_op_not_.Xchg_.Add_or_.Sub.zig
new file mode 100644
index 0000000000..a7359dbf32
--- /dev/null
+++ b/test/compile_errors/stage1/obj/atomicrmw_with_float_op_not_.Xchg_.Add_or_.Sub.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    var x: f32 = 0;
+    _ = @atomicRmw(f32, &x, .And, 2, .SeqCst);
+}
+
+// atomicrmw with float op not .Xchg, .Add or .Sub
+//
+// tmp.zig:3:29: error: @atomicRmw with float only allowed with .Xchg, .Add and .Sub
diff --git a/test/compile_errors/stage1/obj/attempt_to_cast_enum_literal_to_error.zig b/test/compile_errors/stage1/obj/attempt_to_cast_enum_literal_to_error.zig
new file mode 100644
index 0000000000..fd120af3eb
--- /dev/null
+++ b/test/compile_errors/stage1/obj/attempt_to_cast_enum_literal_to_error.zig
@@ -0,0 +1,9 @@
+export fn entry() void {
+    switch (error.Hi) {
+        .Hi => {},
+    }
+}
+
+// attempt to cast enum literal to error
+//
+// tmp.zig:3:9: error: expected type 'error{Hi}', found '@Type(.EnumLiteral)'
diff --git a/test/compile_errors/stage1/obj/attempt_to_close_over_comptime_variable_from_outer_scope.zig b/test/compile_errors/stage1/obj/attempt_to_close_over_comptime_variable_from_outer_scope.zig
new file mode 100644
index 0000000000..5eb5db3dc8
--- /dev/null
+++ b/test/compile_errors/stage1/obj/attempt_to_close_over_comptime_variable_from_outer_scope.zig
@@ -0,0 +1,12 @@
+fn SimpleList(comptime L: usize) type {
+    var T = u8;
+    return struct {
+        array: [L]T,
+    };
+}
+
+// attempt to close over comptime variable from outer scope
+//
+// tmp.zig:4:19: error: mutable 'T' not accessible from here
+// tmp.zig:2:9: note: declared mutable here
+// tmp.zig:3:12: note: crosses namespace boundary here
diff --git a/test/compile_errors/stage1/obj/attempt_to_create_17_bit_float_type.zig b/test/compile_errors/stage1/obj/attempt_to_create_17_bit_float_type.zig
new file mode 100644
index 0000000000..bdea578696
--- /dev/null
+++ b/test/compile_errors/stage1/obj/attempt_to_create_17_bit_float_type.zig
@@ -0,0 +1,8 @@
+const builtin = @import("std").builtin;
+comptime {
+    _ = @Type(.{ .Float = .{ .bits = 17 } });
+}
+
+// attempt to create 17 bit float type
+//
+// tmp.zig:3:16: error: 17-bit float unsupported
diff --git a/test/compile_errors/stage1/obj/attempt_to_negate_a_non-integer_non-float_or_non-vector_type.zig b/test/compile_errors/stage1/obj/attempt_to_negate_a_non-integer_non-float_or_non-vector_type.zig
new file mode 100644
index 0000000000..00ee26033d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/attempt_to_negate_a_non-integer_non-float_or_non-vector_type.zig
@@ -0,0 +1,12 @@
+fn foo() anyerror!u32 {
+    return 1;
+}
+
+export fn entry() void {
+    const x = -foo();
+    _ = x;
+}
+
+// attempt to negate a non-integer, non-float or non-vector type
+//
+// tmp.zig:6:15: error: negation of type 'anyerror!u32'
diff --git a/test/compile_errors/stage1/obj/attempt_to_use_0_bit_type_in_extern_fn.zig b/test/compile_errors/stage1/obj/attempt_to_use_0_bit_type_in_extern_fn.zig
new file mode 100644
index 0000000000..d7767e25e9
--- /dev/null
+++ b/test/compile_errors/stage1/obj/attempt_to_use_0_bit_type_in_extern_fn.zig
@@ -0,0 +1,15 @@
+extern fn foo(ptr: fn(*void) callconv(.C) void) void;
+
+export fn entry() void {
+    foo(bar);
+}
+
+fn bar(x: *void) callconv(.C) void { _ = x; }
+export fn entry2() void {
+    bar(&{});
+}
+
+// attempt to use 0 bit type in extern fn
+//
+// tmp.zig:1:23: error: parameter of type '*void' has 0 bits; not allowed in function with calling convention 'C'
+// tmp.zig:7:11: error: parameter of type '*void' has 0 bits; not allowed in function with calling convention 'C'
diff --git a/test/compile_errors/stage1/obj/attempted_double_ampersand.zig b/test/compile_errors/stage1/obj/attempted_double_ampersand.zig
new file mode 100644
index 0000000000..cc92bc2fae
--- /dev/null
+++ b/test/compile_errors/stage1/obj/attempted_double_ampersand.zig
@@ -0,0 +1,10 @@
+export fn entry(a: bool, b: bool) i32 {
+    if (a && b) {
+        return 1234;
+    }
+    return 5678;
+}
+
+// attempted `&&`
+//
+// tmp.zig:2:11: error: ambiguous use of '&&'; use 'and' for logical AND, or change whitespace to ' & &' for bitwise AND
diff --git a/test/compile_errors/stage1/obj/attempted_double_pipe_on_boolean_values.zig b/test/compile_errors/stage1/obj/attempted_double_pipe_on_boolean_values.zig
new file mode 100644
index 0000000000..8e67b4950d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/attempted_double_pipe_on_boolean_values.zig
@@ -0,0 +1,11 @@
+export fn entry(a: bool, b: bool) i32 {
+    if (a || b) {
+        return 1234;
+    }
+    return 5678;
+}
+
+// attempted `||` on boolean values
+//
+// tmp.zig:2:9: error: expected error set type, found 'bool'
+// tmp.zig:2:11: note: `||` merges error sets; `or` performs boolean OR
diff --git a/test/compile_errors/stage1/obj/attempted_implicit_cast_from_T_to_slice_const_T.zig b/test/compile_errors/stage1/obj/attempted_implicit_cast_from_T_to_slice_const_T.zig
new file mode 100644
index 0000000000..4776104928
--- /dev/null
+++ b/test/compile_errors/stage1/obj/attempted_implicit_cast_from_T_to_slice_const_T.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    const x: [*]const bool = true;
+    _ = x;
+}
+
+// attempted implicit cast from T to [*]const T
+//
+// tmp.zig:2:30: error: expected type '[*]const bool', found 'bool'
diff --git a/test/compile_errors/stage1/obj/attempted_implicit_cast_from_const_T_to_array_len_1_T.zig b/test/compile_errors/stage1/obj/attempted_implicit_cast_from_const_T_to_array_len_1_T.zig
new file mode 100644
index 0000000000..d389c572ca
--- /dev/null
+++ b/test/compile_errors/stage1/obj/attempted_implicit_cast_from_const_T_to_array_len_1_T.zig
@@ -0,0 +1,12 @@
+export fn entry(byte: u8) void {
+    const w: i32 = 1234;
+    var x: *const i32 = &w;
+    var y: *[1]i32 = x;
+    y[0] += 1;
+    _ = byte;
+}
+
+// attempted implicit cast from *const T to *[1]T
+//
+// tmp.zig:4:22: error: expected type '*[1]i32', found '*const i32'
+// tmp.zig:4:22: note: cast discards const qualifier
diff --git a/test/compile_errors/stage1/obj/attempted_implicit_cast_from_const_T_to_sliceT.zig b/test/compile_errors/stage1/obj/attempted_implicit_cast_from_const_T_to_sliceT.zig
new file mode 100644
index 0000000000..70d1cbece2
--- /dev/null
+++ b/test/compile_errors/stage1/obj/attempted_implicit_cast_from_const_T_to_sliceT.zig
@@ -0,0 +1,9 @@
+export fn entry() void {
+    const u: u32 = 42;
+    const x: []u32 = &u;
+    _ = x;
+}
+
+// attempted implicit cast from *const T to []T
+//
+// tmp.zig:3:23: error: expected type '[]u32', found '*const u32'
diff --git a/test/compile_errors/stage1/obj/bad_alignCast_at_comptime.zig b/test/compile_errors/stage1/obj/bad_alignCast_at_comptime.zig
new file mode 100644
index 0000000000..7396dfc4dd
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bad_alignCast_at_comptime.zig
@@ -0,0 +1,9 @@
+comptime {
+    const ptr = @intToPtr(*align(1) i32, 0x1);
+    const aligned = @alignCast(4, ptr);
+    _ = aligned;
+}
+
+// bad @alignCast at comptime
+//
+// tmp.zig:3:35: error: pointer address 0x1 is not aligned to 4 bytes
diff --git a/test/compile_errors/stage1/obj/bad_alignment_in_implicit_cast_from_array_pointer_to_slice.zig b/test/compile_errors/stage1/obj/bad_alignment_in_implicit_cast_from_array_pointer_to_slice.zig
new file mode 100644
index 0000000000..ecfc5523d0
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bad_alignment_in_implicit_cast_from_array_pointer_to_slice.zig
@@ -0,0 +1,9 @@
+export fn a() void {
+    var x: [10]u8 = undefined;
+    var y: []align(16) u8 = &x;
+    _ = y;
+}
+
+// bad alignment in implicit cast from array pointer to slice
+//
+// tmp.zig:3:30: error: expected type '[]align(16) u8', found '*[10]u8'
diff --git a/test/compile_errors/stage1/obj/bad_alignment_type.zig b/test/compile_errors/stage1/obj/bad_alignment_type.zig
new file mode 100644
index 0000000000..902ffc79d6
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bad_alignment_type.zig
@@ -0,0 +1,13 @@
+export fn entry1() void {
+    var x: []align(true) i32 = undefined;
+    _ = x;
+}
+export fn entry2() void {
+    var x: *align(@as(f64, 12.34)) i32 = undefined;
+    _ = x;
+}
+
+// bad alignment type
+//
+// tmp.zig:2:20: error: expected type 'u29', found 'bool'
+// tmp.zig:6:19: error: fractional component prevents float value 12.340000 from being casted to type 'u29'
diff --git a/test/compile_errors/stage1/obj/bad_identifier_in_function_with_struct_defined_inside_function_which_references_local_const.zig b/test/compile_errors/stage1/obj/bad_identifier_in_function_with_struct_defined_inside_function_which_references_local_const.zig
new file mode 100644
index 0000000000..f32301f9ff
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bad_identifier_in_function_with_struct_defined_inside_function_which_references_local_const.zig
@@ -0,0 +1,15 @@
+export fn entry() void {
+    const BlockKind = u32;
+
+    const Block = struct {
+        kind: BlockKind,
+    };
+
+    bogus;
+
+    _ = Block;
+}
+
+// bad identifier in function with struct defined inside function which references local const
+//
+// tmp.zig:8:5: error: use of undeclared identifier 'bogus'
diff --git a/test/compile_errors/stage1/obj/bad_import.zig b/test/compile_errors/stage1/obj/bad_import.zig
new file mode 100644
index 0000000000..f6e93559b2
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bad_import.zig
@@ -0,0 +1,5 @@
+const bogus = @import("bogus-does-not-exist.zig",);
+
+// bad import
+//
+// tmp.zig:1:23: error: unable to load '${DIR}bogus-does-not-exist.zig': FileNotFound
diff --git a/test/compile_errors/stage1/obj/bad_usage_of_call.zig b/test/compile_errors/stage1/obj/bad_usage_of_call.zig
new file mode 100644
index 0000000000..928c39b5a8
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bad_usage_of_call.zig
@@ -0,0 +1,28 @@
+export fn entry1() void {
+    @call(.{}, foo, {});
+}
+export fn entry2() void {
+    comptime @call(.{ .modifier = .never_inline }, foo, .{});
+}
+export fn entry3() void {
+    comptime @call(.{ .modifier = .never_tail }, foo, .{});
+}
+export fn entry4() void {
+    @call(.{ .modifier = .never_inline }, bar, .{});
+}
+export fn entry5(c: bool) void {
+    var baz = if (c) baz1 else baz2;
+    @call(.{ .modifier = .compile_time }, baz, .{});
+}
+fn foo() void {}
+fn bar() callconv(.Inline) void {}
+fn baz1() void {}
+fn baz2() void {}
+
+// bad usage of @call
+//
+// tmp.zig:2:21: error: expected tuple or struct, found 'void'
+// tmp.zig:5:14: error: unable to perform 'never_inline' call at compile-time
+// tmp.zig:8:14: error: unable to perform 'never_tail' call at compile-time
+// tmp.zig:11:5: error: no-inline call of inline function
+// tmp.zig:15:5: error: the specified modifier requires a comptime-known function
diff --git a/test/compile_errors/stage1/obj/bin_and_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/bin_and_assign_on_undefined_value.zig
new file mode 100644
index 0000000000..d9dbdea741
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bin_and_assign_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    a &= a;
+}
+
+// bin and assign on undefined value
+//
+// tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/bin_and_on_undefined_value.zig b/test/compile_errors/stage1/obj/bin_and_on_undefined_value.zig
new file mode 100644
index 0000000000..6775cd56ea
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bin_and_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    _ = a & a;
+}
+
+// bin and on undefined value
+//
+// tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/bin_not_on_undefined_value.zig b/test/compile_errors/stage1/obj/bin_not_on_undefined_value.zig
new file mode 100644
index 0000000000..0e543c4f00
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bin_not_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    _ = ~a;
+}
+
+// bin not on undefined value
+//
+// tmp.zig:3:10: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/bin_or_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/bin_or_assign_on_undefined_value.zig
new file mode 100644
index 0000000000..bfbeb7ce3e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bin_or_assign_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    a |= a;
+}
+
+// bin or assign on undefined value
+//
+// tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/bin_or_on_undefined_value.zig b/test/compile_errors/stage1/obj/bin_or_on_undefined_value.zig
new file mode 100644
index 0000000000..7a62ace9dd
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bin_or_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    _ = a | a;
+}
+
+// bin or on undefined value
+//
+// tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/bin_xor_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/bin_xor_assign_on_undefined_value.zig
new file mode 100644
index 0000000000..bea5e1e089
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bin_xor_assign_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    a ^= a;
+}
+
+// bin xor assign on undefined value
+//
+// tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/bin_xor_on_undefined_value.zig b/test/compile_errors/stage1/obj/bin_xor_on_undefined_value.zig
new file mode 100644
index 0000000000..f6ddb24521
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bin_xor_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    _ = a ^ a;
+}
+
+// bin xor on undefined value
+//
+// tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/binary_not_on_number_literal.zig b/test/compile_errors/stage1/obj/binary_not_on_number_literal.zig
new file mode 100644
index 0000000000..12f5953f16
--- /dev/null
+++ b/test/compile_errors/stage1/obj/binary_not_on_number_literal.zig
@@ -0,0 +1,9 @@
+const TINY_QUANTUM_SHIFT = 4;
+const TINY_QUANTUM_SIZE = 1 << TINY_QUANTUM_SHIFT;
+var block_aligned_stuff: usize = (4 + TINY_QUANTUM_SIZE) & ~(TINY_QUANTUM_SIZE - 1);
+
+export fn entry() usize { return @sizeOf(@TypeOf(block_aligned_stuff)); }
+
+// binary not on number literal
+//
+// tmp.zig:3:60: error: unable to perform binary not operation on type 'comptime_int'
diff --git a/test/compile_errors/stage1/obj/bitCast_same_size_but_bit_count_mismatch.zig b/test/compile_errors/stage1/obj/bitCast_same_size_but_bit_count_mismatch.zig
new file mode 100644
index 0000000000..e4945a1194
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bitCast_same_size_but_bit_count_mismatch.zig
@@ -0,0 +1,8 @@
+export fn entry(byte: u8) void {
+    var oops = @bitCast(u7, byte);
+    _ = oops;
+}
+
+// @bitCast same size but bit count mismatch
+//
+// tmp.zig:2:25: error: destination type 'u7' has 7 bits but source type 'u8' has 8 bits
diff --git a/test/compile_errors/stage1/obj/bitCast_to_enum_type.zig b/test/compile_errors/stage1/obj/bitCast_to_enum_type.zig
new file mode 100644
index 0000000000..dbb73eba18
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bitCast_to_enum_type.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    const y = @bitCast(enum(u32) { a, b }, @as(u32, 3));
+    _ = y;
+}
+
+// bitCast to enum type
+//
+// tmp.zig:2:24: error: cannot cast a value of type 'y'
diff --git a/test/compile_errors/stage1/obj/bitCast_with_different_sizes_inside_an_expression.zig b/test/compile_errors/stage1/obj/bitCast_with_different_sizes_inside_an_expression.zig
new file mode 100644
index 0000000000..bb5c0c5936
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bitCast_with_different_sizes_inside_an_expression.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    var foo = (@bitCast(u8, @as(f32, 1.0)) == 0xf);
+    _ = foo;
+}
+
+// @bitCast with different sizes inside an expression
+//
+// tmp.zig:2:25: error: destination type 'u8' has size 1 but source type 'f32' has size 4
diff --git a/test/compile_errors/stage1/obj/bit_shifting_only_works_on_integer_types.zig b/test/compile_errors/stage1/obj/bit_shifting_only_works_on_integer_types.zig
new file mode 100644
index 0000000000..98fa3128aa
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bit_shifting_only_works_on_integer_types.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    const x = &@as(u8, 1) << 10;
+    _ = x;
+}
+
+// bit shifting only works on integer types
+//
+// tmp.zig:2:16: error: bit shifting operation expected integer type, found '*const u8'
diff --git a/test/compile_errors/stage1/obj/bogus_compile_var.zig b/test/compile_errors/stage1/obj/bogus_compile_var.zig
new file mode 100644
index 0000000000..05777b9ecd
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bogus_compile_var.zig
@@ -0,0 +1,6 @@
+const x = @import("builtin").bogus;
+export fn entry() usize { return @sizeOf(@TypeOf(x)); }
+
+// bogus compile var
+//
+// tmp.zig:1:29: error: container 'builtin' has no member called 'bogus'
diff --git a/test/compile_errors/stage1/obj/bogus_method_call_on_slice.zig b/test/compile_errors/stage1/obj/bogus_method_call_on_slice.zig
new file mode 100644
index 0000000000..8d34a09817
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bogus_method_call_on_slice.zig
@@ -0,0 +1,9 @@
+var self = "aoeu";
+fn f(m: []const u8) void {
+    m.copy(u8, self[0..], m);
+}
+export fn entry() usize { return @sizeOf(@TypeOf(f)); }
+
+// bogus method call on slice
+//
+// tmp.zig:3:6: error: no member named 'copy' in '[]const u8'
diff --git a/test/compile_errors/stage1/obj/bool_not_on_undefined_value.zig b/test/compile_errors/stage1/obj/bool_not_on_undefined_value.zig
new file mode 100644
index 0000000000..71ea7d5e96
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bool_not_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: bool = undefined;
+    _ = !a;
+}
+
+// bool not on undefined value
+//
+// tmp.zig:3:10: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/branch_on_undefined_value.zig b/test/compile_errors/stage1/obj/branch_on_undefined_value.zig
new file mode 100644
index 0000000000..d02ac22a2a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/branch_on_undefined_value.zig
@@ -0,0 +1,7 @@
+const x = if (undefined) true else false;
+
+export fn entry() usize { return @sizeOf(@TypeOf(x)); }
+
+// branch on undefined value
+//
+// tmp.zig:1:15: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/cImport_with_bogus_include.zig b/test/compile_errors/stage1/obj/cImport_with_bogus_include.zig
new file mode 100644
index 0000000000..89627b354f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/cImport_with_bogus_include.zig
@@ -0,0 +1,7 @@
+const c = @cImport(@cInclude("bogus.h"));
+export fn entry() usize { return @sizeOf(@TypeOf(c.bogo)); }
+
+// @cImport with bogus include
+//
+// tmp.zig:1:11: error: C import failed
+// .h:1:10: note: 'bogus.h' file not found
diff --git a/test/compile_errors/stage1/obj/call_assigned_to_constant.zig b/test/compile_errors/stage1/obj/call_assigned_to_constant.zig
new file mode 100644
index 0000000000..fb2febadb2
--- /dev/null
+++ b/test/compile_errors/stage1/obj/call_assigned_to_constant.zig
@@ -0,0 +1,22 @@
+const Foo = struct {
+    x: i32,
+};
+fn foo() Foo {
+    return .{ .x = 42 };
+}
+fn bar(val: anytype) Foo {
+    return .{ .x = val };
+}
+export fn entry() void {
+    const baz: Foo = undefined;
+    baz = foo();
+}
+export fn entry1() void {
+    const baz: Foo = undefined;
+    baz = bar(42);
+}
+
+// call assigned to constant
+//
+// tmp.zig:12:14: error: cannot assign to constant
+// tmp.zig:16:14: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/obj/calling_a_generic_function_only_known_at_runtime.zig b/test/compile_errors/stage1/obj/calling_a_generic_function_only_known_at_runtime.zig
new file mode 100644
index 0000000000..c31b18bb6f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/calling_a_generic_function_only_known_at_runtime.zig
@@ -0,0 +1,12 @@
+var foos = [_]fn(anytype) void { foo1, foo2 };
+
+fn foo1(arg: anytype) void {_ = arg;}
+fn foo2(arg: anytype) void {_ = arg;}
+
+pub fn main() !void {
+    foos[0](true);
+}
+
+// calling a generic function only known at runtime
+//
+// tmp.zig:7:9: error: calling a generic function requires compile-time known function value
diff --git a/test/compile_errors/stage1/obj/calling_function_with_naked_calling_convention.zig b/test/compile_errors/stage1/obj/calling_function_with_naked_calling_convention.zig
new file mode 100644
index 0000000000..c99e5b7831
--- /dev/null
+++ b/test/compile_errors/stage1/obj/calling_function_with_naked_calling_convention.zig
@@ -0,0 +1,9 @@
+export fn entry() void {
+    foo();
+}
+fn foo() callconv(.Naked) void { }
+
+// calling function with naked calling convention
+//
+// tmp.zig:2:5: error: unable to call function with naked calling convention
+// tmp.zig:4:1: note: declared here
diff --git a/test/compile_errors/stage1/obj/calling_var_args_extern_function_passing_array_instead_of_pointer.zig b/test/compile_errors/stage1/obj/calling_var_args_extern_function_passing_array_instead_of_pointer.zig
new file mode 100644
index 0000000000..e3cc4425db
--- /dev/null
+++ b/test/compile_errors/stage1/obj/calling_var_args_extern_function_passing_array_instead_of_pointer.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    foo("hello".*,);
+}
+pub extern fn foo(format: *const u8, ...) void;
+
+// calling var args extern function, passing array instead of pointer
+//
+// tmp.zig:2:16: error: expected type '*const u8', found '[5:0]u8'
diff --git a/test/compile_errors/stage1/obj/cannot_break_out_of_defer_expression.zig b/test/compile_errors/stage1/obj/cannot_break_out_of_defer_expression.zig
new file mode 100644
index 0000000000..002a7717d3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/cannot_break_out_of_defer_expression.zig
@@ -0,0 +1,11 @@
+export fn foo() void {
+    while (true) {
+        defer {
+            break;
+        }
+    }
+}
+
+// cannot break out of defer expression
+//
+// tmp.zig:4:13: error: cannot break out of defer expression
diff --git a/test/compile_errors/stage1/obj/cannot_continue_out_of_defer_expression.zig b/test/compile_errors/stage1/obj/cannot_continue_out_of_defer_expression.zig
new file mode 100644
index 0000000000..8adb7eafd6
--- /dev/null
+++ b/test/compile_errors/stage1/obj/cannot_continue_out_of_defer_expression.zig
@@ -0,0 +1,11 @@
+export fn foo() void {
+    while (true) {
+        defer {
+            continue;
+        }
+    }
+}
+
+// cannot continue out of defer expression
+//
+// tmp.zig:4:13: error: cannot continue out of defer expression
diff --git a/test/compile_errors/stage1/obj/capture_group_on_switch_prong_with_incompatible_payload_types.zig b/test/compile_errors/stage1/obj/capture_group_on_switch_prong_with_incompatible_payload_types.zig
new file mode 100644
index 0000000000..8a4c94f503
--- /dev/null
+++ b/test/compile_errors/stage1/obj/capture_group_on_switch_prong_with_incompatible_payload_types.zig
@@ -0,0 +1,19 @@
+const Union = union(enum) {
+    A: usize,
+    B: isize,
+};
+comptime {
+    var u = Union{ .A = 8 };
+    switch (u) {
+        .A, .B => |e| {
+            _ = e;
+            unreachable;
+        },
+    }
+}
+
+// capture group on switch prong with incompatible payload types
+//
+// tmp.zig:8:20: error: capture group with incompatible types
+// tmp.zig:8:9: note: type 'usize' here
+// tmp.zig:8:13: note: type 'isize' here
diff --git a/test/compile_errors/stage1/obj/cast_enum_literal_to_enum_but_it_doesnt_match.zig b/test/compile_errors/stage1/obj/cast_enum_literal_to_enum_but_it_doesnt_match.zig
new file mode 100644
index 0000000000..10717ff392
--- /dev/null
+++ b/test/compile_errors/stage1/obj/cast_enum_literal_to_enum_but_it_doesnt_match.zig
@@ -0,0 +1,13 @@
+const Foo = enum {
+    a,
+    b,
+};
+export fn entry() void {
+    const x: Foo = .c;
+    _ = x;
+}
+
+// cast enum literal to enum but it doesn't match
+//
+// tmp.zig:6:20: error: enum 'Foo' has no field named 'c'
+// tmp.zig:1:13: note: 'Foo' declared here
diff --git a/test/compile_errors/stage1/obj/cast_error_union_of_global_error_set_to_error_union_of_smaller_error_set.zig b/test/compile_errors/stage1/obj/cast_error_union_of_global_error_set_to_error_union_of_smaller_error_set.zig
new file mode 100644
index 0000000000..fbb68c30c8
--- /dev/null
+++ b/test/compile_errors/stage1/obj/cast_error_union_of_global_error_set_to_error_union_of_smaller_error_set.zig
@@ -0,0 +1,14 @@
+const SmallErrorSet = error{A};
+export fn entry() void {
+    var x: SmallErrorSet!i32 = foo();
+    _ = x;
+}
+fn foo() anyerror!i32 {
+    return error.B;
+}
+
+// cast error union of global error set to error union of smaller error set
+//
+// tmp.zig:3:35: error: expected type 'SmallErrorSet!i32', found 'anyerror!i32'
+// tmp.zig:3:35: note: error set 'anyerror' cannot cast into error set 'SmallErrorSet'
+// tmp.zig:3:35: note: cannot cast global error set into smaller set
diff --git a/test/compile_errors/stage1/obj/cast_global_error_set_to_error_set.zig b/test/compile_errors/stage1/obj/cast_global_error_set_to_error_set.zig
new file mode 100644
index 0000000000..f37ffce229
--- /dev/null
+++ b/test/compile_errors/stage1/obj/cast_global_error_set_to_error_set.zig
@@ -0,0 +1,13 @@
+const SmallErrorSet = error{A};
+export fn entry() void {
+    var x: SmallErrorSet = foo();
+    _ = x;
+}
+fn foo() anyerror {
+    return error.B;
+}
+
+// cast global error set to error set
+//
+// tmp.zig:3:31: error: expected type 'SmallErrorSet', found 'anyerror'
+// tmp.zig:3:31: note: cannot cast global error set into smaller set
diff --git a/test/compile_errors/stage1/obj/cast_negative_integer_literal_to_usize.zig b/test/compile_errors/stage1/obj/cast_negative_integer_literal_to_usize.zig
new file mode 100644
index 0000000000..37e42c062c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/cast_negative_integer_literal_to_usize.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    const x = @as(usize, -10);
+    _ = x;
+}
+
+// cast negative integer literal to usize
+//
+// tmp.zig:2:26: error: cannot cast negative value -10 to unsigned integer type 'usize'
diff --git a/test/compile_errors/stage1/obj/cast_negative_value_to_unsigned_integer.zig b/test/compile_errors/stage1/obj/cast_negative_value_to_unsigned_integer.zig
new file mode 100644
index 0000000000..e740d406f6
--- /dev/null
+++ b/test/compile_errors/stage1/obj/cast_negative_value_to_unsigned_integer.zig
@@ -0,0 +1,15 @@
+comptime {
+    const value: i32 = -1;
+    const unsigned = @intCast(u32, value);
+    _ = unsigned;
+}
+export fn entry1() void {
+    const value: i32 = -1;
+    const unsigned: u32 = value;
+    _ = unsigned;
+}
+
+// cast negative value to unsigned integer
+//
+// tmp.zig:3:22: error: attempt to cast negative value to unsigned integer
+// tmp.zig:8:27: error: cannot cast negative value -1 to unsigned integer type 'u32'
diff --git a/test/compile_errors/stage1/obj/cast_unreachable.zig b/test/compile_errors/stage1/obj/cast_unreachable.zig
new file mode 100644
index 0000000000..94fa121770
--- /dev/null
+++ b/test/compile_errors/stage1/obj/cast_unreachable.zig
@@ -0,0 +1,9 @@
+fn f() i32 {
+    return @as(i32, return 1);
+}
+export fn entry() void { _ = f(); }
+
+// cast unreachable
+//
+// tmp.zig:2:12: error: unreachable code
+// tmp.zig:2:21: note: control flow is diverted here
diff --git a/test/compile_errors/stage1/obj/casting_bit_offset_pointer_to_regular_pointer.zig b/test/compile_errors/stage1/obj/casting_bit_offset_pointer_to_regular_pointer.zig
new file mode 100644
index 0000000000..9b6c5ea0e6
--- /dev/null
+++ b/test/compile_errors/stage1/obj/casting_bit_offset_pointer_to_regular_pointer.zig
@@ -0,0 +1,19 @@
+const BitField = packed struct {
+    a: u3,
+    b: u3,
+    c: u2,
+};
+
+fn foo(bit_field: *const BitField) u3 {
+    return bar(&bit_field.b);
+}
+
+fn bar(x: *const u3) u3 {
+    return x.*;
+}
+
+export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
+
+// casting bit offset pointer to regular pointer
+//
+// tmp.zig:8:26: error: expected type '*const u3', found '*align(:3:1) const u3'
diff --git a/test/compile_errors/stage1/obj/catch_on_undefined_value.zig b/test/compile_errors/stage1/obj/catch_on_undefined_value.zig
new file mode 100644
index 0000000000..9d22d07219
--- /dev/null
+++ b/test/compile_errors/stage1/obj/catch_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: anyerror!bool = undefined;
+    _ = a catch false;
+}
+
+// catch on undefined value
+//
+// tmp.zig:3:11: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/chained_comparison_operators.zig b/test/compile_errors/stage1/obj/chained_comparison_operators.zig
new file mode 100644
index 0000000000..89e1ea1e75
--- /dev/null
+++ b/test/compile_errors/stage1/obj/chained_comparison_operators.zig
@@ -0,0 +1,7 @@
+export fn a(value: u32) bool {
+    return 1 < value < 1000;
+}
+
+// chained comparison operators
+//
+// tmp.zig:2:22: error: comparison operators cannot be chained
diff --git a/test/compile_errors/stage1/obj/cmpxchg_with_float.zig b/test/compile_errors/stage1/obj/cmpxchg_with_float.zig
new file mode 100644
index 0000000000..8926ffc36b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/cmpxchg_with_float.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    var x: f32 = 0;
+    _ = @cmpxchgWeak(f32, &x, 1, 2, .SeqCst, .SeqCst);
+}
+
+// cmpxchg with float
+//
+// tmp.zig:3:22: error: expected bool, integer, enum or pointer type, found 'f32'
diff --git a/test/compile_errors/stage1/obj/colliding_invalid_top_level_functions.zig b/test/compile_errors/stage1/obj/colliding_invalid_top_level_functions.zig
new file mode 100644
index 0000000000..f4e5d24c46
--- /dev/null
+++ b/test/compile_errors/stage1/obj/colliding_invalid_top_level_functions.zig
@@ -0,0 +1,8 @@
+fn func() bogus {}
+fn func() bogus {}
+export fn entry() usize { return @sizeOf(@TypeOf(func)); }
+
+// colliding invalid top level functions
+//
+// tmp.zig:2:1: error: redeclaration of 'func'
+// tmp.zig:1:1: note: other declaration here
diff --git a/test/compile_errors/stage1/obj/compare_optional_to_non-optional_with_invalid_types.zig b/test/compile_errors/stage1/obj/compare_optional_to_non-optional_with_invalid_types.zig
new file mode 100644
index 0000000000..8713cf4501
--- /dev/null
+++ b/test/compile_errors/stage1/obj/compare_optional_to_non-optional_with_invalid_types.zig
@@ -0,0 +1,33 @@
+export fn inconsistentChildType() void {
+    var x: ?i32 = undefined;
+    const y: comptime_int = 10;
+    _ = (x == y);
+}
+
+export fn optionalToOptional() void {
+    var x: ?i32 = undefined;
+    var y: ?i32 = undefined;
+    _ = (x == y);
+}
+
+export fn optionalVector() void {
+    var x: ?@Vector(10, i32) = undefined;
+    var y: @Vector(10, i32) = undefined;
+    _ = (x == y);
+}
+
+export fn invalidChildType() void {
+    var x: ?[3]i32 = undefined;
+    var y: [3]i32 = undefined;
+    _ = (x == y);
+}
+
+// compare optional to non-optional with invalid types
+//
+// :4:12: error: cannot compare types '?i32' and 'comptime_int'
+// :4:12: note: optional child type 'i32' must be the same as non-optional type 'comptime_int'
+// :10:12: error: cannot compare types '?i32' and '?i32'
+// :10:12: note: optional to optional comparison is only supported for optional pointer types
+// :16:12: error: TODO add comparison of optional vector
+// :22:12: error: cannot compare types '?[3]i32' and '[3]i32'
+// :22:12: note: operator not supported for type '[3]i32'
diff --git a/test/compile_errors/stage1/obj/comparing_a_non-optional_pointer_against_null.zig b/test/compile_errors/stage1/obj/comparing_a_non-optional_pointer_against_null.zig
new file mode 100644
index 0000000000..69a5120135
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comparing_a_non-optional_pointer_against_null.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    var x: i32 = 1;
+    _ = &x == null;
+}
+
+// comparing a non-optional pointer against null
+//
+// tmp.zig:3:12: error: comparison of '*i32' with null
diff --git a/test/compile_errors/stage1/obj/comparing_against_undefined_produces_undefined_value.zig b/test/compile_errors/stage1/obj/comparing_against_undefined_produces_undefined_value.zig
new file mode 100644
index 0000000000..c329f51ef7
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comparing_against_undefined_produces_undefined_value.zig
@@ -0,0 +1,7 @@
+export fn entry() void {
+    if (2 == undefined) {}
+}
+
+// comparing against undefined produces undefined value
+//
+// tmp.zig:2:11: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/comparison_operators_with_undefined_value.zig b/test/compile_errors/stage1/obj/comparison_operators_with_undefined_value.zig
new file mode 100644
index 0000000000..6021382fd4
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comparison_operators_with_undefined_value.zig
@@ -0,0 +1,45 @@
+// operator ==
+comptime {
+    var a: i64 = undefined;
+    var x: i32 = 0;
+    if (a == a) x += 1;
+}
+// operator !=
+comptime {
+    var a: i64 = undefined;
+    var x: i32 = 0;
+    if (a != a) x += 1;
+}
+// operator >
+comptime {
+    var a: i64 = undefined;
+    var x: i32 = 0;
+    if (a > a) x += 1;
+}
+// operator <
+comptime {
+    var a: i64 = undefined;
+    var x: i32 = 0;
+    if (a < a) x += 1;
+}
+// operator >=
+comptime {
+    var a: i64 = undefined;
+    var x: i32 = 0;
+    if (a >= a) x += 1;
+}
+// operator <=
+comptime {
+    var a: i64 = undefined;
+    var x: i32 = 0;
+    if (a <= a) x += 1;
+}
+
+// comparison operators with undefined value
+//
+// tmp.zig:5:11: error: use of undefined value here causes undefined behavior
+// tmp.zig:11:11: error: use of undefined value here causes undefined behavior
+// tmp.zig:17:11: error: use of undefined value here causes undefined behavior
+// tmp.zig:23:11: error: use of undefined value here causes undefined behavior
+// tmp.zig:29:11: error: use of undefined value here causes undefined behavior
+// tmp.zig:35:11: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/comparison_with_error_union_and_error_value.zig b/test/compile_errors/stage1/obj/comparison_with_error_union_and_error_value.zig
new file mode 100644
index 0000000000..260ccc6f01
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comparison_with_error_union_and_error_value.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    var number_or_error: anyerror!i32 = error.SomethingAwful;
+    _ = number_or_error == error.SomethingAwful;
+}
+
+// comparison with error union and error value
+//
+// tmp.zig:3:25: error: operator not allowed for type 'anyerror!i32'
diff --git a/test/compile_errors/stage1/obj/compile-time_division_by_zero.zig b/test/compile_errors/stage1/obj/compile-time_division_by_zero.zig
new file mode 100644
index 0000000000..578dbc7b4a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/compile-time_division_by_zero.zig
@@ -0,0 +1,10 @@
+comptime {
+    const a: i32 = 1;
+    const b: i32 = 0;
+    const c = a / b;
+    _ = c;
+}
+
+// compile-time division by zero
+//
+// tmp.zig:4:17: error: division by zero
diff --git a/test/compile_errors/stage1/obj/compile-time_remainder_division_by_zero.zig b/test/compile_errors/stage1/obj/compile-time_remainder_division_by_zero.zig
new file mode 100644
index 0000000000..015d229110
--- /dev/null
+++ b/test/compile_errors/stage1/obj/compile-time_remainder_division_by_zero.zig
@@ -0,0 +1,10 @@
+comptime {
+    const a: i32 = 1;
+    const b: i32 = 0;
+    const c = a % b;
+    _ = c;
+}
+
+// compile-time remainder division by zero
+//
+// tmp.zig:4:17: error: division by zero
diff --git a/test/compile_errors/stage1/obj/compileError_shows_traceback_of_references_that_caused_it.zig b/test/compile_errors/stage1/obj/compileError_shows_traceback_of_references_that_caused_it.zig
new file mode 100644
index 0000000000..4273741ad2
--- /dev/null
+++ b/test/compile_errors/stage1/obj/compileError_shows_traceback_of_references_that_caused_it.zig
@@ -0,0 +1,12 @@
+const foo = @compileError("aoeu",);
+
+const bar = baz + foo;
+const baz = 1;
+
+export fn entry() i32 {
+    return bar;
+}
+
+// @compileError shows traceback of references that caused it
+//
+// tmp.zig:1:13: error: aoeu
diff --git a/test/compile_errors/stage1/obj/compileLog_of_tagged_enum_doesnt_crash_the_compiler.zig b/test/compile_errors/stage1/obj/compileLog_of_tagged_enum_doesnt_crash_the_compiler.zig
new file mode 100644
index 0000000000..0770b3b6a4
--- /dev/null
+++ b/test/compile_errors/stage1/obj/compileLog_of_tagged_enum_doesnt_crash_the_compiler.zig
@@ -0,0 +1,15 @@
+const Bar = union(enum(u32)) {
+    X: i32 = 1
+};
+
+fn testCompileLog(x: Bar) void {
+    @compileLog(x);
+}
+
+pub fn main () void {
+    comptime testCompileLog(Bar{.X = 123});
+}
+
+// compileLog of tagged enum doesn't crash the compiler
+//
+// tmp.zig:6:5: error: found compile log statement
diff --git a/test/compile_errors/stage1/obj/compile_error_in_struct_init_expression.zig b/test/compile_errors/stage1/obj/compile_error_in_struct_init_expression.zig
new file mode 100644
index 0000000000..6215c9ad76
--- /dev/null
+++ b/test/compile_errors/stage1/obj/compile_error_in_struct_init_expression.zig
@@ -0,0 +1,14 @@
+const Foo = struct {
+    a: i32 = crap,
+    b: i32,
+};
+export fn entry() void {
+    var x = Foo{
+        .b = 5,
+    };
+    _ = x;
+}
+
+// compile error in struct init expression
+//
+// tmp.zig:2:14: error: use of undeclared identifier 'crap'
diff --git a/test/compile_errors/stage1/obj/compile_error_when_evaluating_return_type_of_inferred_error_set.zig b/test/compile_errors/stage1/obj/compile_error_when_evaluating_return_type_of_inferred_error_set.zig
new file mode 100644
index 0000000000..44d5b6a389
--- /dev/null
+++ b/test/compile_errors/stage1/obj/compile_error_when_evaluating_return_type_of_inferred_error_set.zig
@@ -0,0 +1,12 @@
+const Car = struct {
+    foo: *SymbolThatDoesNotExist,
+    pub fn init() !Car {}
+};
+export fn entry() void {
+    const car = Car.init();
+    _ = car;
+}
+
+// compile error when evaluating return type of inferred error set
+//
+// tmp.zig:2:11: error: use of undeclared identifier 'SymbolThatDoesNotExist'
diff --git a/test/compile_errors/stage1/obj/compile_log.zig b/test/compile_errors/stage1/obj/compile_log.zig
new file mode 100644
index 0000000000..ef1cba4502
--- /dev/null
+++ b/test/compile_errors/stage1/obj/compile_log.zig
@@ -0,0 +1,14 @@
+export fn foo() void {
+    comptime bar(12, "hi",);
+}
+fn bar(a: i32, b: []const u8) void {
+    @compileLog("begin",);
+    @compileLog("a", a, "b", b);
+    @compileLog("end",);
+}
+
+// compile log
+//
+// tmp.zig:5:5: error: found compile log statement
+// tmp.zig:6:5: error: found compile log statement
+// tmp.zig:7:5: error: found compile log statement
diff --git a/test/compile_errors/stage1/obj/compile_log_a_pointer_to_an_opaque_value.zig b/test/compile_errors/stage1/obj/compile_log_a_pointer_to_an_opaque_value.zig
new file mode 100644
index 0000000000..15b7825a91
--- /dev/null
+++ b/test/compile_errors/stage1/obj/compile_log_a_pointer_to_an_opaque_value.zig
@@ -0,0 +1,7 @@
+export fn entry() void {
+    @compileLog(@ptrCast(*const anyopaque, &entry));
+}
+
+// compile log a pointer to an opaque value
+//
+// tmp.zig:2:5: error: found compile log statement
diff --git a/test/compile_errors/stage1/obj/compile_log_statement_inside_function_which_must_be_comptime_evaluated.zig b/test/compile_errors/stage1/obj/compile_log_statement_inside_function_which_must_be_comptime_evaluated.zig
new file mode 100644
index 0000000000..f848ed7c7c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/compile_log_statement_inside_function_which_must_be_comptime_evaluated.zig
@@ -0,0 +1,12 @@
+fn Foo(comptime T: type) type {
+    @compileLog(@typeName(T));
+    return T;
+}
+export fn entry() void {
+    _ = Foo(i32);
+    _ = @typeName(Foo(i32));
+}
+
+// compile log statement inside function which must be comptime evaluated
+//
+// tmp.zig:2:5: error: found compile log statement
diff --git a/test/compile_errors/stage1/obj/compile_log_statement_warning_deduplication_in_generic_fn.zig b/test/compile_errors/stage1/obj/compile_log_statement_warning_deduplication_in_generic_fn.zig
new file mode 100644
index 0000000000..05ac76724c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/compile_log_statement_warning_deduplication_in_generic_fn.zig
@@ -0,0 +1,12 @@
+export fn entry() void {
+    inner(1);
+    inner(2);
+}
+fn inner(comptime n: usize) void {
+    comptime var i = 0;
+    inline while (i < n) : (i += 1) { @compileLog("!@#$"); }
+}
+
+// compile log statement warning deduplication in generic fn
+//
+// tmp.zig:7:39: error: found compile log statement
diff --git a/test/compile_errors/stage1/obj/compile_time_division_by_zero.zig b/test/compile_errors/stage1/obj/compile_time_division_by_zero.zig
new file mode 100644
index 0000000000..17187c47bf
--- /dev/null
+++ b/test/compile_errors/stage1/obj/compile_time_division_by_zero.zig
@@ -0,0 +1,10 @@
+const y = foo(0);
+fn foo(x: u32) u32 {
+    return 1 / x;
+}
+
+export fn entry() usize { return @sizeOf(@TypeOf(y)); }
+
+// compile time division by zero
+//
+// tmp.zig:3:14: error: division by zero
diff --git a/test/compile_errors/stage1/obj/comptime_cast_enum_to_union_but_field_has_payload.zig b/test/compile_errors/stage1/obj/comptime_cast_enum_to_union_but_field_has_payload.zig
new file mode 100644
index 0000000000..36a2079a01
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_cast_enum_to_union_but_field_has_payload.zig
@@ -0,0 +1,15 @@
+const Letter = enum { A, B, C };
+const Value = union(Letter) {
+    A: i32,
+    B,
+    C,
+};
+export fn entry() void {
+    var x: Value = Letter.A;
+    _ = x;
+}
+
+// comptime cast enum to union but field has payload
+//
+// tmp.zig:8:26: error: cast to union 'Value' must initialize 'i32' field 'A'
+// tmp.zig:3:5: note: field 'A' declared here
diff --git a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_catch.zig b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_catch.zig
new file mode 100644
index 0000000000..18c78c858c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_catch.zig
@@ -0,0 +1,14 @@
+export fn entry() void {
+    const ints = [_]u8{ 1, 2 };
+    inline for (ints) |_| {
+        bad() catch continue;
+    }
+}
+fn bad() !void {
+    return error.Bad;
+}
+
+// comptime continue inside runtime catch
+//
+// tmp.zig:4:21: error: comptime control flow inside runtime block
+// tmp.zig:4:15: note: runtime block created here
diff --git a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_bool.zig b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_bool.zig
new file mode 100644
index 0000000000..f6ec1b98b1
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_bool.zig
@@ -0,0 +1,13 @@
+export fn entry() void {
+    var p: usize = undefined;
+    comptime var q = true;
+    inline while (q) {
+        if (p == 11) continue;
+        q = false;
+    }
+}
+
+// comptime continue inside runtime if bool
+//
+// tmp.zig:5:22: error: comptime control flow inside runtime block
+// tmp.zig:5:9: note: runtime block created here
diff --git a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_error.zig b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_error.zig
new file mode 100644
index 0000000000..556a8769a5
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_error.zig
@@ -0,0 +1,13 @@
+export fn entry() void {
+    var p: anyerror!i32 = undefined;
+    comptime var q = true;
+    inline while (q) {
+        if (p) |_| continue else |_| {}
+        q = false;
+    }
+}
+
+// comptime continue inside runtime if error
+//
+// tmp.zig:5:20: error: comptime control flow inside runtime block
+// tmp.zig:5:9: note: runtime block created here
diff --git a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_optional.zig b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_optional.zig
new file mode 100644
index 0000000000..4f35398a2b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_optional.zig
@@ -0,0 +1,13 @@
+export fn entry() void {
+    var p: ?i32 = undefined;
+    comptime var q = true;
+    inline while (q) {
+        if (p) |_| continue;
+        q = false;
+    }
+}
+
+// comptime continue inside runtime if optional
+//
+// tmp.zig:5:20: error: comptime control flow inside runtime block
+// tmp.zig:5:9: note: runtime block created here
diff --git a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_switch.zig b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_switch.zig
new file mode 100644
index 0000000000..259cbd602e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_switch.zig
@@ -0,0 +1,16 @@
+export fn entry() void {
+    var p: i32 = undefined;
+    comptime var q = true;
+    inline while (q) {
+        switch (p) {
+            11 => continue,
+            else => {},
+        }
+        q = false;
+    }
+}
+
+// comptime continue inside runtime switch
+//
+// tmp.zig:6:19: error: comptime control flow inside runtime block
+// tmp.zig:5:9: note: runtime block created here
diff --git a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_bool.zig b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_bool.zig
new file mode 100644
index 0000000000..5d86394815
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_bool.zig
@@ -0,0 +1,13 @@
+export fn entry() void {
+    var p: usize = undefined;
+    comptime var q = true;
+    outer: inline while (q) {
+        while (p == 11) continue :outer;
+        q = false;
+    }
+}
+
+// comptime continue inside runtime while bool
+//
+// tmp.zig:5:25: error: comptime control flow inside runtime block
+// tmp.zig:5:9: note: runtime block created here
diff --git a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_error.zig b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_error.zig
new file mode 100644
index 0000000000..0ba49cb3ca
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_error.zig
@@ -0,0 +1,15 @@
+export fn entry() void {
+    var p: anyerror!usize = undefined;
+    comptime var q = true;
+    outer: inline while (q) {
+        while (p) |_| {
+            continue :outer;
+        } else |_| {}
+        q = false;
+    }
+}
+
+// comptime continue inside runtime while error
+//
+// tmp.zig:6:13: error: comptime control flow inside runtime block
+// tmp.zig:5:9: note: runtime block created here
diff --git a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_optional.zig b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_optional.zig
new file mode 100644
index 0000000000..b2cfd2f69d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_optional.zig
@@ -0,0 +1,13 @@
+export fn entry() void {
+    var p: ?usize = undefined;
+    comptime var q = true;
+    outer: inline while (q) {
+        while (p) |_| continue :outer;
+        q = false;
+    }
+}
+
+// comptime continue inside runtime while optional
+//
+// tmp.zig:5:23: error: comptime control flow inside runtime block
+// tmp.zig:5:9: note: runtime block created here
diff --git a/test/compile_errors/stage1/obj/comptime_float_in_asm_input.zig b/test/compile_errors/stage1/obj/comptime_float_in_asm_input.zig
new file mode 100644
index 0000000000..c2333586b4
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_float_in_asm_input.zig
@@ -0,0 +1,7 @@
+export fn foo() void {
+    asm volatile ("" : : [bar]"r"(3.17) : "");
+}
+
+// comptime_float in asm input
+//
+// tmp.zig:2:35: error: expected sized integer or sized float, found comptime_float
diff --git a/test/compile_errors/stage1/obj/comptime_implicit_cast_f64_to_f32.zig b/test/compile_errors/stage1/obj/comptime_implicit_cast_f64_to_f32.zig
new file mode 100644
index 0000000000..f98c45a348
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_implicit_cast_f64_to_f32.zig
@@ -0,0 +1,9 @@
+export fn entry() void {
+    const x: f64 = 16777217;
+    const y: f32 = x;
+    _ = y;
+}
+
+// comptime implicit cast f64 to f32
+//
+// tmp.zig:3:20: error: cast of value 16777217.000000 to type 'f32' loses information
diff --git a/test/compile_errors/stage1/obj/comptime_int_in_asm_input.zig b/test/compile_errors/stage1/obj/comptime_int_in_asm_input.zig
new file mode 100644
index 0000000000..5a587e5a77
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_int_in_asm_input.zig
@@ -0,0 +1,7 @@
+export fn foo() void {
+    asm volatile ("" : : [bar]"r"(3) : "");
+}
+
+// comptime_int in asm input
+//
+// tmp.zig:2:35: error: expected sized integer or sized float, found comptime_int
diff --git a/test/compile_errors/stage1/obj/comptime_ptrcast_of_zero-sized_type.zig b/test/compile_errors/stage1/obj/comptime_ptrcast_of_zero-sized_type.zig
new file mode 100644
index 0000000000..1d3f91fe91
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_ptrcast_of_zero-sized_type.zig
@@ -0,0 +1,10 @@
+fn foo() void {
+    const node: struct {} = undefined;
+    const vla_ptr = @ptrCast([*]const u8, &node);
+    _ = vla_ptr;
+}
+comptime { foo(); }
+
+// comptime ptrcast of zero-sized type
+//
+// tmp.zig:3:21: error: '*const struct:2:17' and '[*]const u8' do not have the same in-memory representation
diff --git a/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_memory_at_target_index_terminated.zig b/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_memory_at_target_index_terminated.zig
new file mode 100644
index 0000000000..622e0cf76b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_memory_at_target_index_terminated.zig
@@ -0,0 +1,65 @@
+export fn foo_array() void {
+    comptime {
+        var target = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        const slice = target[0..3 :0];
+        _ = slice;
+    }
+}
+export fn foo_ptr_array() void {
+    comptime {
+        var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target = &buf;
+        const slice = target[0..3 :0];
+        _ = slice;
+    }
+}
+export fn foo_vector_ConstPtrSpecialBaseArray() void {
+    comptime {
+        var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*]u8 = &buf;
+        const slice = target[0..3 :0];
+        _ = slice;
+    }
+}
+export fn foo_vector_ConstPtrSpecialRef() void {
+    comptime {
+        var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*]u8 = @ptrCast([*]u8, &buf);
+        const slice = target[0..3 :0];
+        _ = slice;
+    }
+}
+export fn foo_cvector_ConstPtrSpecialBaseArray() void {
+    comptime {
+        var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*c]u8 = &buf;
+        const slice = target[0..3 :0];
+        _ = slice;
+    }
+}
+export fn foo_cvector_ConstPtrSpecialRef() void {
+    comptime {
+        var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*c]u8 = @ptrCast([*c]u8, &buf);
+        const slice = target[0..3 :0];
+        _ = slice;
+    }
+}
+export fn foo_slice() void {
+    comptime {
+        var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: []u8 = &buf;
+        const slice = target[0..3 :0];
+        _ = slice;
+    }
+}
+
+// comptime slice-sentinel does not match memory at target index (terminated)
+//
+// :4:29: error: slice-sentinel does not match memory at target index
+// :12:29: error: slice-sentinel does not match memory at target index
+// :20:29: error: slice-sentinel does not match memory at target index
+// :28:29: error: slice-sentinel does not match memory at target index
+// :36:29: error: slice-sentinel does not match memory at target index
+// :44:29: error: slice-sentinel does not match memory at target index
+// :52:29: error: slice-sentinel does not match memory at target index
diff --git a/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_memory_at_target_index_unterminated.zig b/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_memory_at_target_index_unterminated.zig
new file mode 100644
index 0000000000..e9451cf9aa
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_memory_at_target_index_unterminated.zig
@@ -0,0 +1,65 @@
+export fn foo_array() void {
+    comptime {
+        var target = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        const slice = target[0..3 :0];
+        _ = slice;
+    }
+}
+export fn foo_ptr_array() void {
+    comptime {
+        var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target = &buf;
+        const slice = target[0..3 :0];
+        _ = slice;
+    }
+}
+export fn foo_vector_ConstPtrSpecialBaseArray() void {
+    comptime {
+        var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*]u8 = &buf;
+        const slice = target[0..3 :0];
+        _ = slice;
+    }
+}
+export fn foo_vector_ConstPtrSpecialRef() void {
+    comptime {
+        var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*]u8 = @ptrCast([*]u8, &buf);
+        const slice = target[0..3 :0];
+        _ = slice;
+    }
+}
+export fn foo_cvector_ConstPtrSpecialBaseArray() void {
+    comptime {
+        var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*c]u8 = &buf;
+        const slice = target[0..3 :0];
+        _ = slice;
+    }
+}
+export fn foo_cvector_ConstPtrSpecialRef() void {
+    comptime {
+        var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*c]u8 = @ptrCast([*c]u8, &buf);
+        const slice = target[0..3 :0];
+        _ = slice;
+    }
+}
+export fn foo_slice() void {
+    comptime {
+        var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: []u8 = &buf;
+        const slice = target[0..3 :0];
+        _ = slice;
+    }
+}
+
+// comptime slice-sentinel does not match memory at target index (unterminated)
+//
+// :4:29: error: slice-sentinel does not match memory at target index
+// :12:29: error: slice-sentinel does not match memory at target index
+// :20:29: error: slice-sentinel does not match memory at target index
+// :28:29: error: slice-sentinel does not match memory at target index
+// :36:29: error: slice-sentinel does not match memory at target index
+// :44:29: error: slice-sentinel does not match memory at target index
+// :52:29: error: slice-sentinel does not match memory at target index
diff --git a/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_target-sentinel.zig b/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_target-sentinel.zig
new file mode 100644
index 0000000000..597a493705
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_target-sentinel.zig
@@ -0,0 +1,65 @@
+export fn foo_array() void {
+    comptime {
+        var target = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        const slice = target[0..14 :255];
+        _ = slice;
+    }
+}
+export fn foo_ptr_array() void {
+    comptime {
+        var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target = &buf;
+        const slice = target[0..14 :255];
+        _ = slice;
+    }
+}
+export fn foo_vector_ConstPtrSpecialBaseArray() void {
+    comptime {
+        var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*]u8 = &buf;
+        const slice = target[0..14 :255];
+        _ = slice;
+    }
+}
+export fn foo_vector_ConstPtrSpecialRef() void {
+    comptime {
+        var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*]u8 = @ptrCast([*]u8, &buf);
+        const slice = target[0..14 :255];
+        _ = slice;
+    }
+}
+export fn foo_cvector_ConstPtrSpecialBaseArray() void {
+    comptime {
+        var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*c]u8 = &buf;
+        const slice = target[0..14 :255];
+        _ = slice;
+    }
+}
+export fn foo_cvector_ConstPtrSpecialRef() void {
+    comptime {
+        var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*c]u8 = @ptrCast([*c]u8, &buf);
+        const slice = target[0..14 :255];
+        _ = slice;
+    }
+}
+export fn foo_slice() void {
+    comptime {
+        var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: []u8 = &buf;
+        const slice = target[0..14 :255];
+        _ = slice;
+    }
+}
+
+// comptime slice-sentinel does not match target-sentinel
+//
+// :4:29: error: slice-sentinel does not match target-sentinel
+// :12:29: error: slice-sentinel does not match target-sentinel
+// :20:29: error: slice-sentinel does not match target-sentinel
+// :28:29: error: slice-sentinel does not match target-sentinel
+// :36:29: error: slice-sentinel does not match target-sentinel
+// :44:29: error: slice-sentinel does not match target-sentinel
+// :52:29: error: slice-sentinel does not match target-sentinel
diff --git a/test/compile_errors/stage1/obj/comptime_slice-sentinel_is_out_of_bounds_terminated.zig b/test/compile_errors/stage1/obj/comptime_slice-sentinel_is_out_of_bounds_terminated.zig
new file mode 100644
index 0000000000..d5fc64ea84
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_slice-sentinel_is_out_of_bounds_terminated.zig
@@ -0,0 +1,65 @@
+export fn foo_array() void {
+    comptime {
+        var target = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        const slice = target[0..15 :1];
+        _ = slice;
+    }
+}
+export fn foo_ptr_array() void {
+    comptime {
+        var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target = &buf;
+        const slice = target[0..15 :0];
+        _ = slice;
+    }
+}
+export fn foo_vector_ConstPtrSpecialBaseArray() void {
+    comptime {
+        var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*]u8 = &buf;
+        const slice = target[0..15 :0];
+        _ = slice;
+    }
+}
+export fn foo_vector_ConstPtrSpecialRef() void {
+    comptime {
+        var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*]u8 = @ptrCast([*]u8, &buf);
+        const slice = target[0..15 :0];
+        _ = slice;
+    }
+}
+export fn foo_cvector_ConstPtrSpecialBaseArray() void {
+    comptime {
+        var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*c]u8 = &buf;
+        const slice = target[0..15 :0];
+        _ = slice;
+    }
+}
+export fn foo_cvector_ConstPtrSpecialRef() void {
+    comptime {
+        var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*c]u8 = @ptrCast([*c]u8, &buf);
+        const slice = target[0..15 :0];
+        _ = slice;
+    }
+}
+export fn foo_slice() void {
+    comptime {
+        var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: []u8 = &buf;
+        const slice = target[0..15 :0];
+        _ = slice;
+    }
+}
+
+// comptime slice-sentinel is out of bounds (terminated)
+//
+// :4:29: error: out of bounds slice
+// :12:29: error: out of bounds slice
+// :20:29: error: out of bounds slice
+// :28:29: error: out of bounds slice
+// :36:29: error: out of bounds slice
+// :44:29: error: out of bounds slice
+// :52:29: error: out of bounds slice
diff --git a/test/compile_errors/stage1/obj/comptime_slice-sentinel_is_out_of_bounds_unterminated.zig b/test/compile_errors/stage1/obj/comptime_slice-sentinel_is_out_of_bounds_unterminated.zig
new file mode 100644
index 0000000000..05a499ca8a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_slice-sentinel_is_out_of_bounds_unterminated.zig
@@ -0,0 +1,65 @@
+export fn foo_array() void {
+    comptime {
+        var target = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        const slice = target[0..14 :0];
+        _ = slice;
+    }
+}
+export fn foo_ptr_array() void {
+    comptime {
+        var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target = &buf;
+        const slice = target[0..14 :0];
+        _ = slice;
+    }
+}
+export fn foo_vector_ConstPtrSpecialBaseArray() void {
+    comptime {
+        var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*]u8 = &buf;
+        const slice = target[0..14 :0];
+        _ = slice;
+    }
+}
+export fn foo_vector_ConstPtrSpecialRef() void {
+    comptime {
+        var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*]u8 = @ptrCast([*]u8, &buf);
+        const slice = target[0..14 :0];
+        _ = slice;
+    }
+}
+export fn foo_cvector_ConstPtrSpecialBaseArray() void {
+    comptime {
+        var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*c]u8 = &buf;
+        const slice = target[0..14 :0];
+        _ = slice;
+    }
+}
+export fn foo_cvector_ConstPtrSpecialRef() void {
+    comptime {
+        var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: [*c]u8 = @ptrCast([*c]u8, &buf);
+        const slice = target[0..14 :0];
+        _ = slice;
+    }
+}
+export fn foo_slice() void {
+    comptime {
+        var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
+        var target: []u8 = &buf;
+        const slice = target[0..14 :0];
+        _ = slice;
+    }
+}
+
+// comptime slice-sentinel is out of bounds (unterminated)
+//
+// :4:29: error: slice-sentinel is out of bounds
+// :12:29: error: slice-sentinel is out of bounds
+// :20:29: error: slice-sentinel is out of bounds
+// :28:29: error: slice-sentinel is out of bounds
+// :36:29: error: slice-sentinel is out of bounds
+// :44:29: error: slice-sentinel is out of bounds
+// :52:29: error: slice-sentinel is out of bounds
diff --git a/test/compile_errors/stage1/obj/comptime_slice_of_an_undefined_slice.zig b/test/compile_errors/stage1/obj/comptime_slice_of_an_undefined_slice.zig
new file mode 100644
index 0000000000..b56feddc02
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_slice_of_an_undefined_slice.zig
@@ -0,0 +1,9 @@
+comptime {
+    var a: []u8 = undefined;
+    var b = a[0..10];
+    _ = b;
+}
+
+// comptime slice of an undefined slice
+//
+// tmp.zig:3:14: error: slice of undefined
diff --git a/test/compile_errors/stage1/obj/comptime_slice_of_undefined_pointer_non-zero_len.zig b/test/compile_errors/stage1/obj/comptime_slice_of_undefined_pointer_non-zero_len.zig
new file mode 100644
index 0000000000..bcddd1d866
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_slice_of_undefined_pointer_non-zero_len.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    const slice = @as([*]i32, undefined)[0..1];
+    _ = slice;
+}
+
+// comptime slice of undefined pointer non-zero len
+//
+// tmp.zig:2:41: error: non-zero length slice of undefined pointer
diff --git a/test/compile_errors/stage1/obj/comptime_struct_field_no_init_value.zig b/test/compile_errors/stage1/obj/comptime_struct_field_no_init_value.zig
new file mode 100644
index 0000000000..c3de76a794
--- /dev/null
+++ b/test/compile_errors/stage1/obj/comptime_struct_field_no_init_value.zig
@@ -0,0 +1,11 @@
+const Foo = struct {
+    comptime b: i32,
+};
+export fn entry() void {
+    var f: Foo = undefined;
+    _ = f;
+}
+
+// comptime struct field, no init value
+//
+// tmp.zig:2:5: error: comptime field without default initialization value
diff --git a/test/compile_errors/stage1/obj/const_frame_cast_to_anyframe.zig b/test/compile_errors/stage1/obj/const_frame_cast_to_anyframe.zig
new file mode 100644
index 0000000000..1e6cdba507
--- /dev/null
+++ b/test/compile_errors/stage1/obj/const_frame_cast_to_anyframe.zig
@@ -0,0 +1,17 @@
+export fn a() void {
+    const f = async func();
+    resume f;
+}
+export fn b() void {
+    const f = async func();
+    var x: anyframe = &f;
+    _ = x;
+}
+fn func() void {
+    suspend {}
+}
+
+// const frame cast to anyframe
+//
+// tmp.zig:3:12: error: expected type 'anyframe', found '*const @Frame(func)'
+// tmp.zig:7:24: error: expected type 'anyframe', found '*const @Frame(func)'
diff --git a/test/compile_errors/stage1/obj/const_is_a_statement_not_an_expression.zig b/test/compile_errors/stage1/obj/const_is_a_statement_not_an_expression.zig
new file mode 100644
index 0000000000..4396407dd1
--- /dev/null
+++ b/test/compile_errors/stage1/obj/const_is_a_statement_not_an_expression.zig
@@ -0,0 +1,7 @@
+export fn f() void {
+    (const a = 0);
+}
+
+// const is a statement, not an expression
+//
+// tmp.zig:2:6: error: expected expression, found 'const'
diff --git a/test/compile_errors/stage1/obj/constant_inside_comptime_function_has_compile_error.zig b/test/compile_errors/stage1/obj/constant_inside_comptime_function_has_compile_error.zig
new file mode 100644
index 0000000000..8eabcfdeaa
--- /dev/null
+++ b/test/compile_errors/stage1/obj/constant_inside_comptime_function_has_compile_error.zig
@@ -0,0 +1,19 @@
+const ContextAllocator = MemoryPool(usize);
+
+pub fn MemoryPool(comptime T: type) type {
+    const free_list_t = @compileError("aoeu",);
+
+    return struct {
+        free_list: free_list_t,
+    };
+}
+
+export fn entry() void {
+    var allocator: ContextAllocator = undefined;
+}
+
+// constant inside comptime function has compile error
+//
+// tmp.zig:4:5: error: unreachable code
+// tmp.zig:4:25: note: control flow is diverted here
+// tmp.zig:12:9: error: unused local variable
diff --git a/test/compile_errors/stage1/obj/container_init_with_non-type.zig b/test/compile_errors/stage1/obj/container_init_with_non-type.zig
new file mode 100644
index 0000000000..6464555df5
--- /dev/null
+++ b/test/compile_errors/stage1/obj/container_init_with_non-type.zig
@@ -0,0 +1,8 @@
+const zero: i32 = 0;
+const a = zero{1};
+
+export fn entry() usize { return @sizeOf(@TypeOf(a)); }
+
+// container init with non-type
+//
+// tmp.zig:2:11: error: expected type 'type', found 'i32'
diff --git a/test/compile_errors/stage1/obj/control_flow_uses_comptime_var_at_runtime.zig b/test/compile_errors/stage1/obj/control_flow_uses_comptime_var_at_runtime.zig
new file mode 100644
index 0000000000..ee2c0234c3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/control_flow_uses_comptime_var_at_runtime.zig
@@ -0,0 +1,13 @@
+export fn foo() void {
+    comptime var i = 0;
+    while (i < 5) : (i += 1) {
+        bar();
+    }
+}
+
+fn bar() void { }
+
+// control flow uses comptime var at runtime
+//
+// tmp.zig:3:5: error: control flow attempts to use compile-time variable at runtime
+// tmp.zig:3:24: note: compile-time variable assigned here
diff --git a/test/compile_errors/stage1/obj/control_reaches_end_of_non-void_function.zig b/test/compile_errors/stage1/obj/control_reaches_end_of_non-void_function.zig
new file mode 100644
index 0000000000..13d2876823
--- /dev/null
+++ b/test/compile_errors/stage1/obj/control_reaches_end_of_non-void_function.zig
@@ -0,0 +1,6 @@
+fn a() i32 {}
+export fn entry() void { _ = a(); }
+
+// control reaches end of non-void function
+//
+// tmp.zig:1:12: error: expected type 'i32', found 'void'
diff --git a/test/compile_errors/stage1/obj/declaration_between_fields.zig b/test/compile_errors/stage1/obj/declaration_between_fields.zig
new file mode 100644
index 0000000000..6e6b60f2e4
--- /dev/null
+++ b/test/compile_errors/stage1/obj/declaration_between_fields.zig
@@ -0,0 +1,22 @@
+const S = struct {
+    const foo = 2;
+    const bar = 2;
+    const baz = 2;
+    a: struct {
+        a: u32,
+        b: u32,
+    },
+    const foo1 = 2;
+    const bar1 = 2;
+    const baz1 = 2;
+    b: usize,
+};
+comptime {
+    _ = S;
+}
+
+// declaration between fields
+//
+// tmp.zig:9:5: error: declarations are not allowed between container fields
+// tmp.zig:5:5: note: field before declarations here
+// tmp.zig:12:5: note: field after declarations here
diff --git a/test/compile_errors/stage1/obj/declaration_with_same_name_as_primitive_must_use_special_syntax.zig b/test/compile_errors/stage1/obj/declaration_with_same_name_as_primitive_must_use_special_syntax.zig
new file mode 100644
index 0000000000..c10f397da4
--- /dev/null
+++ b/test/compile_errors/stage1/obj/declaration_with_same_name_as_primitive_must_use_special_syntax.zig
@@ -0,0 +1,10 @@
+const u8 = u16;
+export fn entry() void {
+    const a: u8 = 300;
+    _ = a;
+}
+
+// declaration with same name as primitive must use special syntax
+//
+// tmp.zig:1:7: error: name shadows primitive 'u8'
+// tmp.zig:1:7: note: consider using @"u8" to disambiguate
diff --git a/test/compile_errors/stage1/obj/deduplicate_undeclared_identifier.zig b/test/compile_errors/stage1/obj/deduplicate_undeclared_identifier.zig
new file mode 100644
index 0000000000..1c9d6c3d31
--- /dev/null
+++ b/test/compile_errors/stage1/obj/deduplicate_undeclared_identifier.zig
@@ -0,0 +1,10 @@
+export fn a() void {
+    x += 1;
+}
+export fn b() void {
+    x += 1;
+}
+
+// deduplicate undeclared identifier
+//
+// tmp.zig:2:5: error: use of undeclared identifier 'x'
diff --git a/test/compile_errors/stage1/obj/deref_on_undefined_value.zig b/test/compile_errors/stage1/obj/deref_on_undefined_value.zig
new file mode 100644
index 0000000000..607f6ea5e0
--- /dev/null
+++ b/test/compile_errors/stage1/obj/deref_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: *u8 = undefined;
+    _ = a.*;
+}
+
+// deref on undefined value
+//
+// tmp.zig:3:9: error: attempt to dereference undefined value
diff --git a/test/compile_errors/stage1/obj/deref_slice_and_get_len_field.zig b/test/compile_errors/stage1/obj/deref_slice_and_get_len_field.zig
new file mode 100644
index 0000000000..2fa5ff6133
--- /dev/null
+++ b/test/compile_errors/stage1/obj/deref_slice_and_get_len_field.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    var a: []u8 = undefined;
+    _ = a.*.len;
+}
+
+// deref slice and get len field
+//
+// tmp.zig:3:10: error: attempt to dereference non-pointer type '[]u8'
diff --git a/test/compile_errors/stage1/obj/dereference_an_array.zig b/test/compile_errors/stage1/obj/dereference_an_array.zig
new file mode 100644
index 0000000000..713c655784
--- /dev/null
+++ b/test/compile_errors/stage1/obj/dereference_an_array.zig
@@ -0,0 +1,12 @@
+var s_buffer: [10]u8 = undefined;
+pub fn pass(in: []u8) []u8 {
+    var out = &s_buffer;
+    out.*.* = in[0];
+    return out.*[0..1];
+}
+
+export fn entry() usize { return @sizeOf(@TypeOf(pass)); }
+
+// dereference an array
+//
+// tmp.zig:4:10: error: attempt to dereference non-pointer type '[10]u8'
diff --git a/test/compile_errors/stage1/obj/dereference_unknown_length_pointer.zig b/test/compile_errors/stage1/obj/dereference_unknown_length_pointer.zig
new file mode 100644
index 0000000000..22ad181fb2
--- /dev/null
+++ b/test/compile_errors/stage1/obj/dereference_unknown_length_pointer.zig
@@ -0,0 +1,7 @@
+export fn entry(x: [*]i32) i32 {
+    return x.*;
+}
+
+// dereference unknown length pointer
+//
+// tmp.zig:2:13: error: index syntax required for unknown-length pointer type '[*]i32'
diff --git a/test/compile_errors/stage1/obj/direct_struct_loop.zig b/test/compile_errors/stage1/obj/direct_struct_loop.zig
new file mode 100644
index 0000000000..25b3c724c3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/direct_struct_loop.zig
@@ -0,0 +1,6 @@
+const A = struct { a : A, };
+export fn entry() usize { return @sizeOf(A); }
+
+// direct struct loop
+//
+// tmp.zig:1:11: error: struct 'A' depends on itself
diff --git a/test/compile_errors/stage1/obj/directly_embedding_opaque_type_in_struct_and_union.zig b/test/compile_errors/stage1/obj/directly_embedding_opaque_type_in_struct_and_union.zig
new file mode 100644
index 0000000000..811fc00f50
--- /dev/null
+++ b/test/compile_errors/stage1/obj/directly_embedding_opaque_type_in_struct_and_union.zig
@@ -0,0 +1,27 @@
+const O = opaque {};
+const Foo = struct {
+    o: O,
+};
+const Bar = union {
+    One: i32,
+    Two: O,
+};
+export fn a() void {
+    var foo: Foo = undefined;
+    _ = foo;
+}
+export fn b() void {
+    var bar: Bar = undefined;
+    _ = bar;
+}
+export fn c() void {
+    var baz: *opaque {} = undefined;
+    const qux = .{baz.*};
+    _ = qux;
+}
+
+// directly embedding opaque type in struct and union
+//
+// tmp.zig:3:5: error: opaque types have unknown size and therefore cannot be directly embedded in structs
+// tmp.zig:7:5: error: opaque types have unknown size and therefore cannot be directly embedded in unions
+// tmp.zig:19:22: error: opaque types have unknown size and therefore cannot be directly embedded in structs
diff --git a/test/compile_errors/stage1/obj/disallow_coercion_from_non-null-terminated_pointer_to_null-terminated_pointer.zig b/test/compile_errors/stage1/obj/disallow_coercion_from_non-null-terminated_pointer_to_null-terminated_pointer.zig
new file mode 100644
index 0000000000..a8467ddc87
--- /dev/null
+++ b/test/compile_errors/stage1/obj/disallow_coercion_from_non-null-terminated_pointer_to_null-terminated_pointer.zig
@@ -0,0 +1,10 @@
+extern fn puts(s: [*:0]const u8) c_int;
+pub fn main() void {
+    const no_zero_array = [_]u8{'h', 'e', 'l', 'l', 'o'};
+    const no_zero_ptr: [*]const u8 = &no_zero_array;
+    _ = puts(no_zero_ptr);
+}
+
+// disallow coercion from non-null-terminated pointer to null-terminated pointer
+//
+// tmp.zig:5:14: error: expected type '[*:0]const u8', found '[*]const u8'
diff --git a/test/compile_errors/stage1/obj/discarding_error_value.zig b/test/compile_errors/stage1/obj/discarding_error_value.zig
new file mode 100644
index 0000000000..966a43a47c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/discarding_error_value.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    _ = foo();
+}
+fn foo() !void {
+    return error.OutOfMemory;
+}
+
+// discarding error value
+//
+// tmp.zig:2:12: error: error is discarded. consider using `try`, `catch`, or `if`
diff --git a/test/compile_errors/stage1/obj/div_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/div_assign_on_undefined_value.zig
new file mode 100644
index 0000000000..40c31649fb
--- /dev/null
+++ b/test/compile_errors/stage1/obj/div_assign_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    a /= a;
+}
+
+// div assign on undefined value
+//
+// tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/div_on_undefined_value.zig b/test/compile_errors/stage1/obj/div_on_undefined_value.zig
new file mode 100644
index 0000000000..17af3fa221
--- /dev/null
+++ b/test/compile_errors/stage1/obj/div_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    _ = a / a;
+}
+
+// div on undefined value
+//
+// tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/division_by_zero.zig b/test/compile_errors/stage1/obj/division_by_zero.zig
new file mode 100644
index 0000000000..178d1d935b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/division_by_zero.zig
@@ -0,0 +1,16 @@
+const lit_int_x = 1 / 0;
+const lit_float_x = 1.0 / 0.0;
+const int_x = @as(u32, 1) / @as(u32, 0);
+const float_x = @as(f32, 1.0) / @as(f32, 0.0);
+
+export fn entry1() usize { return @sizeOf(@TypeOf(lit_int_x)); }
+export fn entry2() usize { return @sizeOf(@TypeOf(lit_float_x)); }
+export fn entry3() usize { return @sizeOf(@TypeOf(int_x)); }
+export fn entry4() usize { return @sizeOf(@TypeOf(float_x)); }
+
+// division by zero
+//
+// tmp.zig:1:21: error: division by zero
+// tmp.zig:2:25: error: division by zero
+// tmp.zig:3:27: error: division by zero
+// tmp.zig:4:31: error: division by zero
diff --git a/test/compile_errors/stage1/obj/dont_implicit_cast_double_pointer_to_anyopaque.zig b/test/compile_errors/stage1/obj/dont_implicit_cast_double_pointer_to_anyopaque.zig
new file mode 100644
index 0000000000..5894103f1c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/dont_implicit_cast_double_pointer_to_anyopaque.zig
@@ -0,0 +1,11 @@
+export fn entry() void {
+    var a: u32 = 1;
+    var ptr: *align(@alignOf(u32)) anyopaque = &a;
+    var b: *u32 = @ptrCast(*u32, ptr);
+    var ptr2: *anyopaque = &b;
+    _ = ptr2;
+}
+
+// don't implicit cast double pointer to *anyopaque
+//
+// tmp.zig:5:29: error: expected type '*anyopaque', found '**u32'
diff --git a/test/compile_errors/stage1/obj/double_optional_on_main_return_value.zig b/test/compile_errors/stage1/obj/double_optional_on_main_return_value.zig
new file mode 100644
index 0000000000..c85706bc87
--- /dev/null
+++ b/test/compile_errors/stage1/obj/double_optional_on_main_return_value.zig
@@ -0,0 +1,6 @@
+pub fn main() ??void {
+}
+
+// double ?? on main return value
+//
+// error: expected return type of main to be 'void', '!void', 'noreturn', 'u8', or '!u8'
diff --git a/test/compile_errors/stage1/obj/duplicate_boolean_switch_value.zig b/test/compile_errors/stage1/obj/duplicate_boolean_switch_value.zig
new file mode 100644
index 0000000000..8c496d5e19
--- /dev/null
+++ b/test/compile_errors/stage1/obj/duplicate_boolean_switch_value.zig
@@ -0,0 +1,21 @@
+comptime {
+    const x = switch (true) {
+        true => false,
+        false => true,
+        true => false,
+    };
+    _ = x;
+}
+comptime {
+    const x = switch (true) {
+        false => true,
+        true => false,
+        false => true,
+    };
+    _ = x;
+}
+
+// duplicate boolean switch value
+//
+// tmp.zig:5:9: error: duplicate switch value
+// tmp.zig:13:9: error: duplicate switch value
diff --git a/test/compile_errors/stage1/obj/duplicate_enum_field.zig b/test/compile_errors/stage1/obj/duplicate_enum_field.zig
new file mode 100644
index 0000000000..2aee3cc2dc
--- /dev/null
+++ b/test/compile_errors/stage1/obj/duplicate_enum_field.zig
@@ -0,0 +1,14 @@
+const Foo = enum {
+    Bar,
+    Bar,
+};
+
+export fn entry() void {
+    const a: Foo = undefined;
+    _ = a;
+}
+
+// duplicate enum field
+//
+// tmp.zig:3:5: error: duplicate enum field: 'Bar'
+// tmp.zig:2:5: note: other field here
diff --git a/test/compile_errors/stage1/obj/duplicate_error_in_switch.zig b/test/compile_errors/stage1/obj/duplicate_error_in_switch.zig
new file mode 100644
index 0000000000..bca59056c3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/duplicate_error_in_switch.zig
@@ -0,0 +1,20 @@
+export fn entry() void {
+    foo(452) catch |err| switch (err) {
+        error.Foo => {},
+        error.Bar => {},
+        error.Foo => {},
+        else => {},
+    };
+}
+fn foo(x: i32) !void {
+    switch (x) {
+        0 ... 10 => return error.Foo,
+        11 ... 20 => return error.Bar,
+        else => {},
+    }
+}
+
+// duplicate error in switch
+//
+// tmp.zig:5:14: error: duplicate switch value: '@typeInfo(@typeInfo(@TypeOf(foo)).Fn.return_type.?).ErrorUnion.error_set.Foo'
+// tmp.zig:3:14: note: other value here
diff --git a/test/compile_errors/stage1/obj/duplicate_error_value_in_error_set.zig b/test/compile_errors/stage1/obj/duplicate_error_value_in_error_set.zig
new file mode 100644
index 0000000000..90457562b2
--- /dev/null
+++ b/test/compile_errors/stage1/obj/duplicate_error_value_in_error_set.zig
@@ -0,0 +1,13 @@
+const Foo = error {
+    Bar,
+    Bar,
+};
+export fn entry() void {
+    const a: Foo = undefined;
+    _ = a;
+}
+
+// duplicate error value in error set
+//
+// tmp.zig:3:5: error: duplicate error set field 'Bar'
+// tmp.zig:2:5: note: previous declaration here
diff --git a/test/compile_errors/stage1/obj/duplicate_field_in_struct_value_expression.zig b/test/compile_errors/stage1/obj/duplicate_field_in_struct_value_expression.zig
new file mode 100644
index 0000000000..6df71430d9
--- /dev/null
+++ b/test/compile_errors/stage1/obj/duplicate_field_in_struct_value_expression.zig
@@ -0,0 +1,18 @@
+const A = struct {
+    x : i32,
+    y : i32,
+    z : i32,
+};
+export fn f() void {
+    const a = A {
+        .z = 1,
+        .y = 2,
+        .x = 3,
+        .z = 4,
+    };
+    _ = a;
+}
+
+// duplicate field in struct value expression
+//
+// tmp.zig:11:9: error: duplicate field
diff --git a/test/compile_errors/stage1/obj/duplicate_struct_field.zig b/test/compile_errors/stage1/obj/duplicate_struct_field.zig
new file mode 100644
index 0000000000..d1fd05aacc
--- /dev/null
+++ b/test/compile_errors/stage1/obj/duplicate_struct_field.zig
@@ -0,0 +1,13 @@
+const Foo = struct {
+    Bar: i32,
+    Bar: usize,
+};
+export fn entry() void {
+    const a: Foo = undefined;
+    _ = a;
+}
+
+// duplicate struct field
+//
+// tmp.zig:3:5: error: duplicate struct field: 'Bar'
+// tmp.zig:2:5: note: other field here
diff --git a/test/compile_errors/stage1/obj/duplicate_union_field.zig b/test/compile_errors/stage1/obj/duplicate_union_field.zig
new file mode 100644
index 0000000000..a8bff106c6
--- /dev/null
+++ b/test/compile_errors/stage1/obj/duplicate_union_field.zig
@@ -0,0 +1,13 @@
+const Foo = union {
+    Bar: i32,
+    Bar: usize,
+};
+export fn entry() void {
+    const a: Foo = undefined;
+    _ = a;
+}
+
+// duplicate union field
+//
+// tmp.zig:3:5: error: duplicate union field: 'Bar'
+// tmp.zig:2:5: note: other field here
diff --git a/test/compile_errors/stage1/obj/embedFile_with_bogus_file.zig b/test/compile_errors/stage1/obj/embedFile_with_bogus_file.zig
new file mode 100644
index 0000000000..e50e091909
--- /dev/null
+++ b/test/compile_errors/stage1/obj/embedFile_with_bogus_file.zig
@@ -0,0 +1,7 @@
+const resource = @embedFile("bogus.txt",);
+
+export fn entry() usize { return @sizeOf(@TypeOf(resource)); }
+
+// @embedFile with bogus file
+//
+// tmp.zig:1:29: error: unable to find '
diff --git a/test/compile_errors/stage1/obj/empty_for_loop_body.zig b/test/compile_errors/stage1/obj/empty_for_loop_body.zig
new file mode 100644
index 0000000000..6e042f71e4
--- /dev/null
+++ b/test/compile_errors/stage1/obj/empty_for_loop_body.zig
@@ -0,0 +1,7 @@
+export fn a() void {
+    for(undefined) |x|;
+}
+
+// empty for loop body
+//
+// tmp.zig:2:23: error: expected block or assignment, found ';'
diff --git a/test/compile_errors/stage1/obj/empty_if_body.zig b/test/compile_errors/stage1/obj/empty_if_body.zig
new file mode 100644
index 0000000000..a81973396f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/empty_if_body.zig
@@ -0,0 +1,7 @@
+export fn a() void {
+    if(true);
+}
+
+// empty if body
+//
+// tmp.zig:2:13: error: expected block or assignment, found ';'
diff --git a/test/compile_errors/stage1/obj/empty_switch_on_an_integer.zig b/test/compile_errors/stage1/obj/empty_switch_on_an_integer.zig
new file mode 100644
index 0000000000..eb0bdbab19
--- /dev/null
+++ b/test/compile_errors/stage1/obj/empty_switch_on_an_integer.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    var x: u32 = 0;
+    switch(x) {}
+}
+
+// empty switch on an integer
+//
+// tmp.zig:3:5: error: switch must handle all possibilities
diff --git a/test/compile_errors/stage1/obj/empty_while_loop_body.zig b/test/compile_errors/stage1/obj/empty_while_loop_body.zig
new file mode 100644
index 0000000000..3a186f1a2b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/empty_while_loop_body.zig
@@ -0,0 +1,7 @@
+export fn a() void {
+    while(true);
+}
+
+// empty while loop body
+//
+// tmp.zig:2:16: error: expected block or assignment, found ';'
diff --git a/test/compile_errors/stage1/obj/endless_loop_in_function_evaluation.zig b/test/compile_errors/stage1/obj/endless_loop_in_function_evaluation.zig
new file mode 100644
index 0000000000..fa422ba588
--- /dev/null
+++ b/test/compile_errors/stage1/obj/endless_loop_in_function_evaluation.zig
@@ -0,0 +1,10 @@
+const seventh_fib_number = fibonacci(7);
+fn fibonacci(x: i32) i32 {
+    return fibonacci(x - 1) + fibonacci(x - 2);
+}
+
+export fn entry() usize { return @sizeOf(@TypeOf(seventh_fib_number)); }
+
+// endless loop in function evaluation
+//
+// tmp.zig:3:21: error: evaluation exceeded 1000 backwards branches
diff --git a/test/compile_errors/stage1/obj/enum_field_value_references_enum.zig b/test/compile_errors/stage1/obj/enum_field_value_references_enum.zig
new file mode 100644
index 0000000000..02dcfc1f9d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/enum_field_value_references_enum.zig
@@ -0,0 +1,13 @@
+pub const Foo = enum(c_int) {
+    A = Foo.B,
+    C = D,
+};
+export fn entry() void {
+    var s: Foo = Foo.E;
+    _ = s;
+}
+const D = 1;
+
+// enum field value references enum
+//
+// tmp.zig:1:17: error: enum 'Foo' depends on itself
diff --git a/test/compile_errors/stage1/obj/enum_in_field_count_range_but_not_matching_tag.zig b/test/compile_errors/stage1/obj/enum_in_field_count_range_but_not_matching_tag.zig
new file mode 100644
index 0000000000..dc90c467df
--- /dev/null
+++ b/test/compile_errors/stage1/obj/enum_in_field_count_range_but_not_matching_tag.zig
@@ -0,0 +1,13 @@
+const Foo = enum(u32) {
+    A = 10,
+    B = 11,
+};
+export fn entry() void {
+    var x = @intToEnum(Foo, 0);
+    _ = x;
+}
+
+// enum in field count range but not matching tag
+//
+// tmp.zig:6:13: error: enum 'Foo' has no tag matching integer value 0
+// tmp.zig:1:13: note: 'Foo' declared here
diff --git a/test/compile_errors/stage1/obj/enum_value_already_taken.zig b/test/compile_errors/stage1/obj/enum_value_already_taken.zig
new file mode 100644
index 0000000000..9939553c41
--- /dev/null
+++ b/test/compile_errors/stage1/obj/enum_value_already_taken.zig
@@ -0,0 +1,16 @@
+const MultipleChoice = enum(u32) {
+    A = 20,
+    B = 40,
+    C = 60,
+    D = 1000,
+    E = 60,
+};
+export fn entry() void {
+    var x = MultipleChoice.C;
+    _ = x;
+}
+
+// enum value already taken
+//
+// tmp.zig:6:5: error: enum tag value 60 already taken
+// tmp.zig:4:5: note: other occurrence here
diff --git a/test/compile_errors/stage1/obj/enum_with_0_fields.zig b/test/compile_errors/stage1/obj/enum_with_0_fields.zig
new file mode 100644
index 0000000000..10559d15b3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/enum_with_0_fields.zig
@@ -0,0 +1,5 @@
+const Foo = enum {};
+
+// enum with 0 fields
+//
+// tmp.zig:1:13: error: enum declarations must have at least one tag
diff --git a/test/compile_errors/stage1/obj/enum_with_declarations_unavailable_for_reify_type.zig b/test/compile_errors/stage1/obj/enum_with_declarations_unavailable_for_reify_type.zig
new file mode 100644
index 0000000000..4a27caab3d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/enum_with_declarations_unavailable_for_reify_type.zig
@@ -0,0 +1,7 @@
+export fn entry() void {
+    _ = @Type(@typeInfo(enum { foo, const bar = 1; }));
+}
+
+// enum with declarations unavailable for @Type
+//
+// tmp.zig:2:15: error: Type.Enum.decls must be empty for @Type
diff --git a/test/compile_errors/stage1/obj/error_equality_but_sets_have_no_common_members.zig b/test/compile_errors/stage1/obj/error_equality_but_sets_have_no_common_members.zig
new file mode 100644
index 0000000000..433f6d50e3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/error_equality_but_sets_have_no_common_members.zig
@@ -0,0 +1,14 @@
+const Set1 = error{A, C};
+const Set2 = error{B, D};
+export fn entry() void {
+    foo(Set1.A);
+}
+fn foo(x: Set1) void {
+    if (x == Set2.B) {
+
+    }
+}
+
+// error equality but sets have no common members
+//
+// tmp.zig:7:11: error: error sets 'Set1' and 'Set2' have no common errors
diff --git a/test/compile_errors/stage1/obj/error_not_handled_in_switch.zig b/test/compile_errors/stage1/obj/error_not_handled_in_switch.zig
new file mode 100644
index 0000000000..a69c538eac
--- /dev/null
+++ b/test/compile_errors/stage1/obj/error_not_handled_in_switch.zig
@@ -0,0 +1,18 @@
+export fn entry() void {
+    foo(452) catch |err| switch (err) {
+        error.Foo => {},
+    };
+}
+fn foo(x: i32) !void {
+    switch (x) {
+        0 ... 10 => return error.Foo,
+        11 ... 20 => return error.Bar,
+        21 ... 30 => return error.Baz,
+        else => {},
+    }
+}
+
+// error not handled in switch
+//
+// tmp.zig:2:26: error: error.Baz not handled in switch
+// tmp.zig:2:26: error: error.Bar not handled in switch
diff --git a/test/compile_errors/stage1/obj/error_note_for_function_parameter_incompatibility.zig b/test/compile_errors/stage1/obj/error_note_for_function_parameter_incompatibility.zig
new file mode 100644
index 0000000000..5014d01a3d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/error_note_for_function_parameter_incompatibility.zig
@@ -0,0 +1,10 @@
+fn do_the_thing(func: fn (arg: i32) void) void { _ = func; }
+fn bar(arg: bool) void { _ = arg; }
+export fn entry() void {
+    do_the_thing(bar);
+}
+
+// error note for function parameter incompatibility
+//
+// tmp.zig:4:18: error: expected type 'fn(i32) void', found 'fn(bool) void
+// tmp.zig:4:18: note: parameter 0: 'bool' cannot cast into 'i32'
diff --git a/test/compile_errors/stage1/obj/error_union_operator_with_non_error_set_LHS.zig b/test/compile_errors/stage1/obj/error_union_operator_with_non_error_set_LHS.zig
new file mode 100644
index 0000000000..40b5872fc8
--- /dev/null
+++ b/test/compile_errors/stage1/obj/error_union_operator_with_non_error_set_LHS.zig
@@ -0,0 +1,9 @@
+comptime {
+    const z = i32!i32;
+    var x: z = undefined;
+    _ = x;
+}
+
+// error union operator with non error set LHS
+//
+// tmp.zig:2:15: error: expected error set type, found type 'i32'
diff --git a/test/compile_errors/stage1/obj/error_when_evaluating_return_type.zig b/test/compile_errors/stage1/obj/error_when_evaluating_return_type.zig
new file mode 100644
index 0000000000..60baa1c5b4
--- /dev/null
+++ b/test/compile_errors/stage1/obj/error_when_evaluating_return_type.zig
@@ -0,0 +1,15 @@
+const Foo = struct {
+    map: @as(i32, i32),
+
+    fn init() Foo {
+        return undefined;
+    }
+};
+export fn entry() void {
+    var rule_set = try Foo.init();
+    _ = rule_set;
+}
+
+// error when evaluating return type
+//
+// tmp.zig:2:19: error: expected type 'i32', found 'type'
diff --git a/test/compile_errors/stage1/obj/exceeded_maximum_bit_width_of_integer.zig b/test/compile_errors/stage1/obj/exceeded_maximum_bit_width_of_integer.zig
new file mode 100644
index 0000000000..e1784de63e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/exceeded_maximum_bit_width_of_integer.zig
@@ -0,0 +1,13 @@
+export fn entry1() void {
+    const T = u65536;
+    _ = T;
+}
+export fn entry2() void {
+    var x: i65536 = 1;
+    _ = x;
+}
+
+// exceeded maximum bit width of integer
+//
+// tmp.zig:2:15: error: primitive integer type 'u65536' exceeds maximum bit width of 65535
+// tmp.zig:6:12: error: primitive integer type 'i65536' exceeds maximum bit width of 65535
diff --git a/test/compile_errors/stage1/obj/explicit_cast_float_literal_to_integer_when_there_is_a_fraction_component.zig b/test/compile_errors/stage1/obj/explicit_cast_float_literal_to_integer_when_there_is_a_fraction_component.zig
new file mode 100644
index 0000000000..eaa2be84c7
--- /dev/null
+++ b/test/compile_errors/stage1/obj/explicit_cast_float_literal_to_integer_when_there_is_a_fraction_component.zig
@@ -0,0 +1,7 @@
+export fn entry() i32 {
+    return @as(i32, 12.34);
+}
+
+// explicit cast float literal to integer when there is a fraction component
+//
+// tmp.zig:2:21: error: fractional component prevents float value 12.340000 from being casted to type 'i32'
diff --git a/test/compile_errors/stage1/obj/explicit_error_set_cast_known_at_comptime_violates_error_sets.zig b/test/compile_errors/stage1/obj/explicit_error_set_cast_known_at_comptime_violates_error_sets.zig
new file mode 100644
index 0000000000..68d78e0f92
--- /dev/null
+++ b/test/compile_errors/stage1/obj/explicit_error_set_cast_known_at_comptime_violates_error_sets.zig
@@ -0,0 +1,11 @@
+const Set1 = error {A, B};
+const Set2 = error {A, C};
+comptime {
+    var x = Set1.B;
+    var y = @errSetCast(Set2, x);
+    _ = y;
+}
+
+// explicit error set cast known at comptime violates error sets
+//
+// tmp.zig:5:13: error: error.B not a member of error set 'Set2'
diff --git a/test/compile_errors/stage1/obj/explicitly_casting_non_tag_type_to_enum.zig b/test/compile_errors/stage1/obj/explicitly_casting_non_tag_type_to_enum.zig
new file mode 100644
index 0000000000..e7c4d5f5d9
--- /dev/null
+++ b/test/compile_errors/stage1/obj/explicitly_casting_non_tag_type_to_enum.zig
@@ -0,0 +1,16 @@
+const Small = enum(u2) {
+    One,
+    Two,
+    Three,
+    Four,
+};
+
+export fn entry() void {
+    var y = @as(f32, 3);
+    var x = @intToEnum(Small, y);
+    _ = x;
+}
+
+// explicitly casting non tag type to enum
+//
+// tmp.zig:10:31: error: expected integer type, found 'f32'
diff --git a/test/compile_errors/stage1/obj/export_function_with_comptime_parameter.zig b/test/compile_errors/stage1/obj/export_function_with_comptime_parameter.zig
new file mode 100644
index 0000000000..0f300f324b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/export_function_with_comptime_parameter.zig
@@ -0,0 +1,7 @@
+export fn foo(comptime x: i32, y: i32) i32{
+    return x + y;
+}
+
+// export function with comptime parameter
+//
+// tmp.zig:1:15: error: comptime parameter not allowed in function with calling convention 'C'
diff --git a/test/compile_errors/stage1/obj/export_generic_function.zig b/test/compile_errors/stage1/obj/export_generic_function.zig
new file mode 100644
index 0000000000..3fb4375ed4
--- /dev/null
+++ b/test/compile_errors/stage1/obj/export_generic_function.zig
@@ -0,0 +1,8 @@
+export fn foo(num: anytype) i32 {
+    _ = num;
+    return 0;
+}
+
+// export generic function
+//
+// tmp.zig:1:15: error: parameter of type 'anytype' not allowed in function with calling convention 'C'
diff --git a/test/compile_errors/stage1/obj/exported_async_function.zig b/test/compile_errors/stage1/obj/exported_async_function.zig
new file mode 100644
index 0000000000..296a5950e9
--- /dev/null
+++ b/test/compile_errors/stage1/obj/exported_async_function.zig
@@ -0,0 +1,5 @@
+export fn foo() callconv(.Async) void {}
+
+// exported async function
+//
+// tmp.zig:1:1: error: exported function cannot be async
diff --git a/test/compile_errors/stage1/obj/exported_enum_without_explicit_integer_tag_type.zig b/test/compile_errors/stage1/obj/exported_enum_without_explicit_integer_tag_type.zig
new file mode 100644
index 0000000000..3d6e63db43
--- /dev/null
+++ b/test/compile_errors/stage1/obj/exported_enum_without_explicit_integer_tag_type.zig
@@ -0,0 +1,13 @@
+const E = enum { one, two };
+comptime {
+    @export(E, .{ .name = "E" });
+}
+const e: E = .two;
+comptime {
+    @export(e, .{ .name = "e" });
+}
+
+// exported enum without explicit integer tag type
+//
+// tmp.zig:3:13: error: exported enum without explicit integer tag type
+// tmp.zig:7:13: error: exported enum value without explicit integer tag type
diff --git a/test/compile_errors/stage1/obj/extern_function_pointer_mismatch.zig b/test/compile_errors/stage1/obj/extern_function_pointer_mismatch.zig
new file mode 100644
index 0000000000..f93a24db34
--- /dev/null
+++ b/test/compile_errors/stage1/obj/extern_function_pointer_mismatch.zig
@@ -0,0 +1,10 @@
+const fns = [_](fn(i32)i32) { a, b, c };
+pub fn a(x: i32) i32 {return x + 0;}
+pub fn b(x: i32) i32 {return x + 1;}
+export fn c(x: i32) i32 {return x + 2;}
+
+export fn entry() usize { return @sizeOf(@TypeOf(fns)); }
+
+// extern function pointer mismatch
+//
+// tmp.zig:1:37: error: expected type 'fn(i32) i32', found 'fn(i32) callconv(.C) i32'
diff --git a/test/compile_errors/stage1/obj/extern_function_with_comptime_parameter.zig b/test/compile_errors/stage1/obj/extern_function_with_comptime_parameter.zig
new file mode 100644
index 0000000000..3dfdfe663e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/extern_function_with_comptime_parameter.zig
@@ -0,0 +1,9 @@
+extern fn foo(comptime x: i32, y: i32) i32;
+fn f() i32 {
+    return foo(1, 2);
+}
+export fn entry() usize { return @sizeOf(@TypeOf(f)); }
+
+// extern function with comptime parameter
+//
+// tmp.zig:1:15: error: comptime parameter not allowed in function with calling convention 'C'
diff --git a/test/compile_errors/stage1/obj/extern_struct_with_extern-compatible_but_inferred_integer_tag_type.zig b/test/compile_errors/stage1/obj/extern_struct_with_extern-compatible_but_inferred_integer_tag_type.zig
new file mode 100644
index 0000000000..e65c438da3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/extern_struct_with_extern-compatible_but_inferred_integer_tag_type.zig
@@ -0,0 +1,41 @@
+pub const E = enum {
+@"0",@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"10",@"11",@"12",
+@"13",@"14",@"15",@"16",@"17",@"18",@"19",@"20",@"21",@"22",@"23",
+@"24",@"25",@"26",@"27",@"28",@"29",@"30",@"31",@"32",@"33",@"34",
+@"35",@"36",@"37",@"38",@"39",@"40",@"41",@"42",@"43",@"44",@"45",
+@"46",@"47",@"48",@"49",@"50",@"51",@"52",@"53",@"54",@"55",@"56",
+@"57",@"58",@"59",@"60",@"61",@"62",@"63",@"64",@"65",@"66",@"67",
+@"68",@"69",@"70",@"71",@"72",@"73",@"74",@"75",@"76",@"77",@"78",
+@"79",@"80",@"81",@"82",@"83",@"84",@"85",@"86",@"87",@"88",@"89",
+@"90",@"91",@"92",@"93",@"94",@"95",@"96",@"97",@"98",@"99",@"100",
+@"101",@"102",@"103",@"104",@"105",@"106",@"107",@"108",@"109",
+@"110",@"111",@"112",@"113",@"114",@"115",@"116",@"117",@"118",
+@"119",@"120",@"121",@"122",@"123",@"124",@"125",@"126",@"127",
+@"128",@"129",@"130",@"131",@"132",@"133",@"134",@"135",@"136",
+@"137",@"138",@"139",@"140",@"141",@"142",@"143",@"144",@"145",
+@"146",@"147",@"148",@"149",@"150",@"151",@"152",@"153",@"154",
+@"155",@"156",@"157",@"158",@"159",@"160",@"161",@"162",@"163",
+@"164",@"165",@"166",@"167",@"168",@"169",@"170",@"171",@"172",
+@"173",@"174",@"175",@"176",@"177",@"178",@"179",@"180",@"181",
+@"182",@"183",@"184",@"185",@"186",@"187",@"188",@"189",@"190",
+@"191",@"192",@"193",@"194",@"195",@"196",@"197",@"198",@"199",
+@"200",@"201",@"202",@"203",@"204",@"205",@"206",@"207",@"208",
+@"209",@"210",@"211",@"212",@"213",@"214",@"215",@"216",@"217",
+@"218",@"219",@"220",@"221",@"222",@"223",@"224",@"225",@"226",
+@"227",@"228",@"229",@"230",@"231",@"232",@"233",@"234",@"235",
+@"236",@"237",@"238",@"239",@"240",@"241",@"242",@"243",@"244",
+@"245",@"246",@"247",@"248",@"249",@"250",@"251",@"252",@"253",
+@"254",@"255"
+};
+pub const S = extern struct {
+    e: E,
+};
+export fn entry() void {
+    if (@typeInfo(E).Enum.tag_type != u8) @compileError("did not infer u8 tag type");
+    const s: S = undefined;
+    _ = s;
+}
+
+// extern struct with extern-compatible but inferred integer tag type
+//
+// tmp.zig:31:5: error: extern structs cannot contain fields of type 'E'
diff --git a/test/compile_errors/stage1/obj/extern_struct_with_non-extern-compatible_integer_tag_type.zig b/test/compile_errors/stage1/obj/extern_struct_with_non-extern-compatible_integer_tag_type.zig
new file mode 100644
index 0000000000..6d698ce8e3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/extern_struct_with_non-extern-compatible_integer_tag_type.zig
@@ -0,0 +1,12 @@
+pub const E = enum(u31) { A, B, C };
+pub const S = extern struct {
+    e: E,
+};
+export fn entry() void {
+    const s: S = undefined;
+    _ = s;
+}
+
+// extern struct with non-extern-compatible integer tag type
+//
+// tmp.zig:3:5: error: extern structs cannot contain fields of type 'E'
diff --git a/test/compile_errors/stage1/obj/extern_union_field_missing_type.zig b/test/compile_errors/stage1/obj/extern_union_field_missing_type.zig
new file mode 100644
index 0000000000..1287ce0159
--- /dev/null
+++ b/test/compile_errors/stage1/obj/extern_union_field_missing_type.zig
@@ -0,0 +1,11 @@
+const Letter = extern union {
+    A,
+};
+export fn entry() void {
+    var a = Letter { .A = {} };
+    _ = a;
+}
+
+// extern union field missing type
+//
+// tmp.zig:2:5: error: union field missing type
diff --git a/test/compile_errors/stage1/obj/extern_union_given_enum_tag_type.zig b/test/compile_errors/stage1/obj/extern_union_given_enum_tag_type.zig
new file mode 100644
index 0000000000..5b38d77eb6
--- /dev/null
+++ b/test/compile_errors/stage1/obj/extern_union_given_enum_tag_type.zig
@@ -0,0 +1,18 @@
+const Letter = enum {
+    A,
+    B,
+    C,
+};
+const Payload = extern union(Letter) {
+    A: i32,
+    B: f64,
+    C: bool,
+};
+export fn entry() void {
+    var a = Payload { .A = 1234 };
+    _ = a;
+}
+
+// extern union given enum tag type
+//
+// tmp.zig:6:30: error: extern union does not support enum tag type
diff --git a/test/compile_errors/stage1/obj/extern_variable_has_no_type.zig b/test/compile_errors/stage1/obj/extern_variable_has_no_type.zig
new file mode 100644
index 0000000000..f9d3952275
--- /dev/null
+++ b/test/compile_errors/stage1/obj/extern_variable_has_no_type.zig
@@ -0,0 +1,8 @@
+extern var foo;
+pub export fn entry() void {
+    foo;
+}
+
+// extern variable has no type
+//
+// tmp.zig:1:8: error: unable to infer variable type
diff --git a/test/compile_errors/stage1/obj/fieldParentPtr-bad_field_name.zig b/test/compile_errors/stage1/obj/fieldParentPtr-bad_field_name.zig
new file mode 100644
index 0000000000..8c40641113
--- /dev/null
+++ b/test/compile_errors/stage1/obj/fieldParentPtr-bad_field_name.zig
@@ -0,0 +1,10 @@
+const Foo = extern struct {
+    derp: i32,
+};
+export fn foo(a: *i32) *Foo {
+    return @fieldParentPtr(Foo, "a", a);
+}
+
+// @fieldParentPtr - bad field name
+//
+// tmp.zig:5:33: error: struct 'Foo' has no field 'a'
diff --git a/test/compile_errors/stage1/obj/fieldParentPtr-comptime_field_ptr_not_based_on_struct.zig b/test/compile_errors/stage1/obj/fieldParentPtr-comptime_field_ptr_not_based_on_struct.zig
new file mode 100644
index 0000000000..a8a5431352
--- /dev/null
+++ b/test/compile_errors/stage1/obj/fieldParentPtr-comptime_field_ptr_not_based_on_struct.zig
@@ -0,0 +1,15 @@
+const Foo = struct {
+    a: i32,
+    b: i32,
+};
+const foo = Foo { .a = 1, .b = 2, };
+
+comptime {
+    const field_ptr = @intToPtr(*i32, 0x1234);
+    const another_foo_ptr = @fieldParentPtr(Foo, "b", field_ptr);
+    _ = another_foo_ptr;
+}
+
+// @fieldParentPtr - comptime field ptr not based on struct
+//
+// tmp.zig:9:55: error: pointer value not based on parent struct
diff --git a/test/compile_errors/stage1/obj/fieldParentPtr-comptime_wrong_field_index.zig b/test/compile_errors/stage1/obj/fieldParentPtr-comptime_wrong_field_index.zig
new file mode 100644
index 0000000000..11bb7282fc
--- /dev/null
+++ b/test/compile_errors/stage1/obj/fieldParentPtr-comptime_wrong_field_index.zig
@@ -0,0 +1,14 @@
+const Foo = struct {
+    a: i32,
+    b: i32,
+};
+const foo = Foo { .a = 1, .b = 2, };
+
+comptime {
+    const another_foo_ptr = @fieldParentPtr(Foo, "b", &foo.a);
+    _ = another_foo_ptr;
+}
+
+// @fieldParentPtr - comptime wrong field index
+//
+// tmp.zig:8:29: error: field 'b' has index 1 but pointer value is index 0 of struct 'Foo'
diff --git a/test/compile_errors/stage1/obj/fieldParentPtr-field_pointer_is_not_pointer.zig b/test/compile_errors/stage1/obj/fieldParentPtr-field_pointer_is_not_pointer.zig
new file mode 100644
index 0000000000..8db9075b7b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/fieldParentPtr-field_pointer_is_not_pointer.zig
@@ -0,0 +1,10 @@
+const Foo = extern struct {
+    a: i32,
+};
+export fn foo(a: i32) *Foo {
+    return @fieldParentPtr(Foo, "a", a);
+}
+
+// @fieldParentPtr - field pointer is not pointer
+//
+// tmp.zig:5:38: error: expected pointer, found 'i32'
diff --git a/test/compile_errors/stage1/obj/fieldParentPtr-non_struct.zig b/test/compile_errors/stage1/obj/fieldParentPtr-non_struct.zig
new file mode 100644
index 0000000000..325fbe5b3b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/fieldParentPtr-non_struct.zig
@@ -0,0 +1,8 @@
+const Foo = i32;
+export fn foo(a: *i32) *Foo {
+    return @fieldParentPtr(Foo, "a", a);
+}
+
+// @fieldParentPtr - non struct
+//
+// tmp.zig:3:28: error: expected struct type, found 'i32'
diff --git a/test/compile_errors/stage1/obj/field_access_of_opaque_type.zig b/test/compile_errors/stage1/obj/field_access_of_opaque_type.zig
new file mode 100644
index 0000000000..3354c0f471
--- /dev/null
+++ b/test/compile_errors/stage1/obj/field_access_of_opaque_type.zig
@@ -0,0 +1,14 @@
+const MyType = opaque {};
+
+export fn entry() bool {
+    var x: i32 = 1;
+    return bar(@ptrCast(*MyType, &x));
+}
+
+fn bar(x: *MyType) bool {
+    return x.blah;
+}
+
+// field access of opaque type
+//
+// tmp.zig:9:13: error: no member named 'blah' in opaque type 'MyType'
diff --git a/test/compile_errors/stage1/obj/field_access_of_slices.zig b/test/compile_errors/stage1/obj/field_access_of_slices.zig
new file mode 100644
index 0000000000..3e79e1f0e0
--- /dev/null
+++ b/test/compile_errors/stage1/obj/field_access_of_slices.zig
@@ -0,0 +1,9 @@
+export fn entry() void {
+    var slice: []i32 = undefined;
+    const info = @TypeOf(slice).unknown;
+    _ = info;
+}
+
+// field access of slices
+//
+// tmp.zig:3:32: error: type 'type' does not support field access
diff --git a/test/compile_errors/stage1/obj/field_access_of_unknown_length_pointer.zig b/test/compile_errors/stage1/obj/field_access_of_unknown_length_pointer.zig
new file mode 100644
index 0000000000..7097c13605
--- /dev/null
+++ b/test/compile_errors/stage1/obj/field_access_of_unknown_length_pointer.zig
@@ -0,0 +1,11 @@
+const Foo = extern struct {
+    a: i32,
+};
+
+export fn entry(foo: [*]Foo) void {
+    foo.a += 1;
+}
+
+// field access of unknown length pointer
+//
+// tmp.zig:6:8: error: type '[*]Foo' does not support field access
diff --git a/test/compile_errors/stage1/obj/field_type_supplied_in_an_enum.zig b/test/compile_errors/stage1/obj/field_type_supplied_in_an_enum.zig
new file mode 100644
index 0000000000..cb308307bb
--- /dev/null
+++ b/test/compile_errors/stage1/obj/field_type_supplied_in_an_enum.zig
@@ -0,0 +1,10 @@
+const Letter = enum {
+    A: void,
+    B,
+    C,
+};
+
+// field type supplied in an enum
+//
+// tmp.zig:2:8: error: enum fields do not have types
+// tmp.zig:1:16: note: consider 'union(enum)' here to make it a tagged union
diff --git a/test/compile_errors/stage1/obj/floatToInt_comptime_safety.zig b/test/compile_errors/stage1/obj/floatToInt_comptime_safety.zig
new file mode 100644
index 0000000000..e54047fb2f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/floatToInt_comptime_safety.zig
@@ -0,0 +1,15 @@
+comptime {
+    _ = @floatToInt(i8, @as(f32, -129.1));
+}
+comptime {
+    _ = @floatToInt(u8, @as(f32, -1.1));
+}
+comptime {
+    _ = @floatToInt(u8, @as(f32, 256.1));
+}
+
+// @floatToInt comptime safety
+//
+// tmp.zig:2:9: error: integer value '-129' cannot be stored in type 'i8'
+// tmp.zig:5:9: error: integer value '-1' cannot be stored in type 'u8'
+// tmp.zig:8:9: error: integer value '256' cannot be stored in type 'u8'
diff --git a/test/compile_errors/stage1/obj/float_literal_too_large_error.zig b/test/compile_errors/stage1/obj/float_literal_too_large_error.zig
new file mode 100644
index 0000000000..d7be9874ac
--- /dev/null
+++ b/test/compile_errors/stage1/obj/float_literal_too_large_error.zig
@@ -0,0 +1,8 @@
+comptime {
+    const a = 0x1.0p18495;
+    _ = a;
+}
+
+// float literal too large error
+//
+// tmp.zig:2:15: error: float literal out of range of any type
diff --git a/test/compile_errors/stage1/obj/float_literal_too_small_error_denormal.zig b/test/compile_errors/stage1/obj/float_literal_too_small_error_denormal.zig
new file mode 100644
index 0000000000..2657775be0
--- /dev/null
+++ b/test/compile_errors/stage1/obj/float_literal_too_small_error_denormal.zig
@@ -0,0 +1,8 @@
+comptime {
+    const a = 0x1.0p-19000;
+    _ = a;
+}
+
+// float literal too small error (denormal)
+//
+// tmp.zig:2:15: error: float literal out of range of any type
diff --git a/test/compile_errors/stage1/obj/for_loop_body_expression_ignored.zig b/test/compile_errors/stage1/obj/for_loop_body_expression_ignored.zig
new file mode 100644
index 0000000000..fffbb13604
--- /dev/null
+++ b/test/compile_errors/stage1/obj/for_loop_body_expression_ignored.zig
@@ -0,0 +1,16 @@
+fn returns() usize {
+    return 2;
+}
+export fn f1() void {
+    for ("hello") |_| returns();
+}
+export fn f2() void {
+    var x: anyerror!i32 = error.Bad;
+    for ("hello") |_| returns() else unreachable;
+    _ = x;
+}
+
+// for loop body expression ignored
+//
+// tmp.zig:5:30: error: expression value is ignored
+// tmp.zig:9:30: error: expression value is ignored
diff --git a/test/compile_errors/stage1/obj/frame_called_outside_of_function_definition.zig b/test/compile_errors/stage1/obj/frame_called_outside_of_function_definition.zig
new file mode 100644
index 0000000000..a76fff93a8
--- /dev/null
+++ b/test/compile_errors/stage1/obj/frame_called_outside_of_function_definition.zig
@@ -0,0 +1,9 @@
+var handle_undef: anyframe = undefined;
+var handle_dummy: anyframe = @frame();
+export fn entry() bool {
+    return handle_undef == handle_dummy;
+}
+
+// @frame() called outside of function definition
+//
+// tmp.zig:2:30: error: @frame() called outside of function definition
diff --git a/test/compile_errors/stage1/obj/frame_causes_function_to_be_async.zig b/test/compile_errors/stage1/obj/frame_causes_function_to_be_async.zig
new file mode 100644
index 0000000000..b45ff6965e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/frame_causes_function_to_be_async.zig
@@ -0,0 +1,11 @@
+export fn entry() void {
+    func();
+}
+fn func() void {
+    _ = @frame();
+}
+
+// @frame() causes function to be async
+//
+// tmp.zig:1:1: error: function with calling convention 'C' cannot be async
+// tmp.zig:5:9: note: @frame() causes function to be async
diff --git a/test/compile_errors/stage1/obj/function_alignment_non_power_of_2.zig b/test/compile_errors/stage1/obj/function_alignment_non_power_of_2.zig
new file mode 100644
index 0000000000..949e11c115
--- /dev/null
+++ b/test/compile_errors/stage1/obj/function_alignment_non_power_of_2.zig
@@ -0,0 +1,6 @@
+extern fn foo() align(3) void;
+export fn entry() void { return foo(); }
+
+// function alignment non power of 2
+//
+// tmp.zig:1:23: error: alignment value 3 is not a power of 2
diff --git a/test/compile_errors/stage1/obj/function_call_assigned_to_incorrect_type.zig b/test/compile_errors/stage1/obj/function_call_assigned_to_incorrect_type.zig
new file mode 100644
index 0000000000..4257b802c1
--- /dev/null
+++ b/test/compile_errors/stage1/obj/function_call_assigned_to_incorrect_type.zig
@@ -0,0 +1,11 @@
+export fn entry() void {
+    var arr: [4]f32 = undefined;
+    arr = concat();
+}
+fn concat() [16]f32 {
+    return [1]f32{0}**16;
+}
+
+// function call assigned to incorrect type
+//
+// tmp.zig:3:17: error: expected type '[4]f32', found '[16]f32'
diff --git a/test/compile_errors/stage1/obj/function_parameter_is_opaque.zig b/test/compile_errors/stage1/obj/function_parameter_is_opaque.zig
new file mode 100644
index 0000000000..12e50ca59b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/function_parameter_is_opaque.zig
@@ -0,0 +1,27 @@
+const FooType = opaque {};
+export fn entry1() void {
+    const someFuncPtr: fn (FooType) void = undefined;
+    _ = someFuncPtr;
+}
+
+export fn entry2() void {
+    const someFuncPtr: fn (@TypeOf(null)) void = undefined;
+    _ = someFuncPtr;
+}
+
+fn foo(p: FooType) void {_ = p;}
+export fn entry3() void {
+    _ = foo;
+}
+
+fn bar(p: @TypeOf(null)) void {_ = p;}
+export fn entry4() void {
+    _ = bar;
+}
+
+// function parameter is opaque
+//
+// tmp.zig:3:28: error: parameter of opaque type 'FooType' not allowed
+// tmp.zig:8:28: error: parameter of type '@Type(.Null)' not allowed
+// tmp.zig:12:11: error: parameter of opaque type 'FooType' not allowed
+// tmp.zig:17:11: error: parameter of type '@Type(.Null)' not allowed
diff --git a/test/compile_errors/stage1/obj/function_prototype_with_no_body.zig b/test/compile_errors/stage1/obj/function_prototype_with_no_body.zig
new file mode 100644
index 0000000000..07597af015
--- /dev/null
+++ b/test/compile_errors/stage1/obj/function_prototype_with_no_body.zig
@@ -0,0 +1,8 @@
+fn foo() void;
+export fn entry() void {
+    foo();
+}
+
+// function prototype with no body
+//
+// tmp.zig:1:1: error: non-extern function has no body
diff --git a/test/compile_errors/stage1/obj/function_returning_opaque_type.zig b/test/compile_errors/stage1/obj/function_returning_opaque_type.zig
new file mode 100644
index 0000000000..956a4ed224
--- /dev/null
+++ b/test/compile_errors/stage1/obj/function_returning_opaque_type.zig
@@ -0,0 +1,17 @@
+const FooType = opaque {};
+export fn bar() !FooType {
+    return error.InvalidValue;
+}
+export fn bav() !@TypeOf(null) {
+    return error.InvalidValue;
+}
+export fn baz() !@TypeOf(undefined) {
+    return error.InvalidValue;
+}
+
+// function returning opaque type
+//
+// tmp.zig:2:18: error: Opaque return type 'FooType' not allowed
+// tmp.zig:1:1: note: type declared here
+// tmp.zig:5:18: error: Null return type '@Type(.Null)' not allowed
+// tmp.zig:8:18: error: Undefined return type '@Type(.Undefined)' not allowed
diff --git a/test/compile_errors/stage1/obj/function_with_ccc_indirectly_calling_async_function.zig b/test/compile_errors/stage1/obj/function_with_ccc_indirectly_calling_async_function.zig
new file mode 100644
index 0000000000..1ccf486be6
--- /dev/null
+++ b/test/compile_errors/stage1/obj/function_with_ccc_indirectly_calling_async_function.zig
@@ -0,0 +1,16 @@
+export fn entry() void {
+    foo();
+}
+fn foo() void {
+    bar();
+}
+fn bar() void {
+    suspend {}
+}
+
+// function with ccc indirectly calling async function
+//
+// tmp.zig:1:1: error: function with calling convention 'C' cannot be async
+// tmp.zig:2:8: note: async function call here
+// tmp.zig:5:8: note: async function call here
+// tmp.zig:8:5: note: suspends here
diff --git a/test/compile_errors/stage1/obj/function_with_invalid_return_type.zig b/test/compile_errors/stage1/obj/function_with_invalid_return_type.zig
new file mode 100644
index 0000000000..acedbac7d1
--- /dev/null
+++ b/test/compile_errors/stage1/obj/function_with_invalid_return_type.zig
@@ -0,0 +1,5 @@
+export fn foo() boid {}
+
+// function with invalid return type
+//
+// tmp.zig:1:17: error: use of undeclared identifier 'boid'
diff --git a/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_enum_parameter.zig b/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_enum_parameter.zig
new file mode 100644
index 0000000000..9c1913305d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_enum_parameter.zig
@@ -0,0 +1,6 @@
+const Foo = enum { A, B, C };
+export fn entry(foo: Foo) void { _ = foo; }
+
+// function with non-extern non-packed enum parameter
+//
+// tmp.zig:2:22: error: parameter of type 'Foo' not allowed in function with calling convention 'C'
diff --git a/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_struct_parameter.zig b/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_struct_parameter.zig
new file mode 100644
index 0000000000..eb2617f279
--- /dev/null
+++ b/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_struct_parameter.zig
@@ -0,0 +1,10 @@
+const Foo = struct {
+    A: i32,
+    B: f32,
+    C: bool,
+};
+export fn entry(foo: Foo) void { _ = foo; }
+
+// function with non-extern non-packed struct parameter
+//
+// tmp.zig:6:22: error: parameter of type 'Foo' not allowed in function with calling convention 'C'
diff --git a/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_union_parameter.zig b/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_union_parameter.zig
new file mode 100644
index 0000000000..662ffd349b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_union_parameter.zig
@@ -0,0 +1,10 @@
+const Foo = union {
+    A: i32,
+    B: f32,
+    C: bool,
+};
+export fn entry(foo: Foo) void { _ = foo; }
+
+// function with non-extern non-packed union parameter
+//
+// tmp.zig:6:22: error: parameter of type 'Foo' not allowed in function with calling convention 'C'
diff --git a/test/compile_errors/stage1/obj/generic_fn_as_parameter_without_comptime_keyword.zig b/test/compile_errors/stage1/obj/generic_fn_as_parameter_without_comptime_keyword.zig
new file mode 100644
index 0000000000..fceea0961b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/generic_fn_as_parameter_without_comptime_keyword.zig
@@ -0,0 +1,9 @@
+fn f(_: fn (anytype) void) void {}
+fn g(_: anytype) void {}
+export fn entry() void {
+    f(g);
+}
+
+// generic fn as parameter without comptime keyword
+//
+// tmp.zig:1:9: error: parameter of type 'fn(anytype) anytype' must be declared comptime
diff --git a/test/compile_errors/stage1/obj/generic_function_call_assigned_to_incorrect_type.zig b/test/compile_errors/stage1/obj/generic_function_call_assigned_to_incorrect_type.zig
new file mode 100644
index 0000000000..b48d5def57
--- /dev/null
+++ b/test/compile_errors/stage1/obj/generic_function_call_assigned_to_incorrect_type.zig
@@ -0,0 +1,11 @@
+pub export fn entry() void {
+    var res: []i32 = undefined;
+    res = myAlloc(i32);
+}
+fn myAlloc(comptime arg: type) anyerror!arg{
+    unreachable;
+}
+
+// generic function call assigned to incorrect type
+//
+// tmp.zig:3:18: error: expected type '[]i32', found 'anyerror!i32
diff --git a/test/compile_errors/stage1/obj/generic_function_instance_with_non-constant_expression.zig b/test/compile_errors/stage1/obj/generic_function_instance_with_non-constant_expression.zig
new file mode 100644
index 0000000000..3698370b57
--- /dev/null
+++ b/test/compile_errors/stage1/obj/generic_function_instance_with_non-constant_expression.zig
@@ -0,0 +1,10 @@
+fn foo(comptime x: i32, y: i32) i32 { return x + y; }
+fn test1(a: i32, b: i32) i32 {
+    return foo(a, b);
+}
+
+export fn entry() usize { return @sizeOf(@TypeOf(test1)); }
+
+// generic function instance with non-constant expression
+//
+// tmp.zig:3:16: error: runtime value cannot be passed to comptime arg
diff --git a/test/compile_errors/stage1/obj/generic_function_returning_opaque_type.zig b/test/compile_errors/stage1/obj/generic_function_returning_opaque_type.zig
new file mode 100644
index 0000000000..c109a5ce7c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/generic_function_returning_opaque_type.zig
@@ -0,0 +1,23 @@
+const FooType = opaque {};
+fn generic(comptime T: type) !T {
+    return undefined;
+}
+export fn bar() void {
+    _ = generic(FooType);
+}
+export fn bav() void {
+    _ = generic(@TypeOf(null));
+}
+export fn baz() void {
+    _ = generic(@TypeOf(undefined));
+}
+
+// generic function returning opaque type
+//
+// tmp.zig:6:16: error: call to generic function with Opaque return type 'FooType' not allowed
+// tmp.zig:2:1: note: function declared here
+// tmp.zig:1:1: note: type declared here
+// tmp.zig:9:16: error: call to generic function with Null return type '@Type(.Null)' not allowed
+// tmp.zig:2:1: note: function declared here
+// tmp.zig:12:16: error: call to generic function with Undefined return type '@Type(.Undefined)' not allowed
+// tmp.zig:2:1: note: function declared here
diff --git a/test/compile_errors/stage1/obj/generic_function_where_return_type_is_self-referenced.zig b/test/compile_errors/stage1/obj/generic_function_where_return_type_is_self-referenced.zig
new file mode 100644
index 0000000000..18237a5023
--- /dev/null
+++ b/test/compile_errors/stage1/obj/generic_function_where_return_type_is_self-referenced.zig
@@ -0,0 +1,13 @@
+fn Foo(comptime T: type) Foo(T) {
+    return struct{ x: T };
+}
+export fn entry() void {
+    const t = Foo(u32) {
+      .x = 1
+    };
+    _ = t;
+}
+
+// generic function where return type is self-referenced
+//
+// tmp.zig:1:29: error: evaluation exceeded 1000 backwards branches
diff --git a/test/compile_errors/stage1/obj/global_variable_alignment_non_power_of_2.zig b/test/compile_errors/stage1/obj/global_variable_alignment_non_power_of_2.zig
new file mode 100644
index 0000000000..a6c4ccaa98
--- /dev/null
+++ b/test/compile_errors/stage1/obj/global_variable_alignment_non_power_of_2.zig
@@ -0,0 +1,6 @@
+const some_data: [100]u8 align(3) = undefined;
+export fn entry() usize { return @sizeOf(@TypeOf(some_data)); }
+
+// global variable alignment non power of 2
+//
+// tmp.zig:1:32: error: alignment value 3 is not a power of 2
diff --git a/test/compile_errors/stage1/obj/global_variable_initializer_must_be_constant_expression.zig b/test/compile_errors/stage1/obj/global_variable_initializer_must_be_constant_expression.zig
new file mode 100644
index 0000000000..1d6c20f3af
--- /dev/null
+++ b/test/compile_errors/stage1/obj/global_variable_initializer_must_be_constant_expression.zig
@@ -0,0 +1,7 @@
+extern fn foo() i32;
+const x = foo();
+export fn entry() i32 { return x; }
+
+// global variable initializer must be constant expression
+//
+// tmp.zig:2:11: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/hasDecl_with_non-container.zig b/test/compile_errors/stage1/obj/hasDecl_with_non-container.zig
new file mode 100644
index 0000000000..50f1231997
--- /dev/null
+++ b/test/compile_errors/stage1/obj/hasDecl_with_non-container.zig
@@ -0,0 +1,7 @@
+export fn entry() void {
+    _ = @hasDecl(i32, "hi");
+}
+
+// @hasDecl with non-container
+//
+// tmp.zig:2:18: error: expected struct, enum, or union; found 'i32'
diff --git a/test/compile_errors/stage1/obj/if_condition_is_bool_not_int.zig b/test/compile_errors/stage1/obj/if_condition_is_bool_not_int.zig
new file mode 100644
index 0000000000..e8b7c61417
--- /dev/null
+++ b/test/compile_errors/stage1/obj/if_condition_is_bool_not_int.zig
@@ -0,0 +1,7 @@
+export fn f() void {
+    if (0) {}
+}
+
+// if condition is bool, not int
+//
+// tmp.zig:2:9: error: expected type 'bool', found 'comptime_int'
diff --git a/test/compile_errors/stage1/obj/ignored_assert-err-ok_return_value.zig b/test/compile_errors/stage1/obj/ignored_assert-err-ok_return_value.zig
new file mode 100644
index 0000000000..53fbcaa8b5
--- /dev/null
+++ b/test/compile_errors/stage1/obj/ignored_assert-err-ok_return_value.zig
@@ -0,0 +1,8 @@
+export fn foo() void {
+    bar() catch unreachable;
+}
+fn bar() anyerror!i32 { return 0; }
+
+// ignored assert-err-ok return value
+//
+// tmp.zig:2:11: error: expression value is ignored
diff --git a/test/compile_errors/stage1/obj/ignored_comptime_statement_value.zig b/test/compile_errors/stage1/obj/ignored_comptime_statement_value.zig
new file mode 100644
index 0000000000..80925d6c84
--- /dev/null
+++ b/test/compile_errors/stage1/obj/ignored_comptime_statement_value.zig
@@ -0,0 +1,7 @@
+export fn foo() void {
+    comptime {1;}
+}
+
+// ignored comptime statement value
+//
+// tmp.zig:2:15: error: expression value is ignored
diff --git a/test/compile_errors/stage1/obj/ignored_comptime_value.zig b/test/compile_errors/stage1/obj/ignored_comptime_value.zig
new file mode 100644
index 0000000000..375a5d242c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/ignored_comptime_value.zig
@@ -0,0 +1,7 @@
+export fn foo() void {
+    comptime 1;
+}
+
+// ignored comptime value
+//
+// tmp.zig:2:5: error: expression value is ignored
diff --git a/test/compile_errors/stage1/obj/ignored_deferred_function_call.zig b/test/compile_errors/stage1/obj/ignored_deferred_function_call.zig
new file mode 100644
index 0000000000..58b85da985
--- /dev/null
+++ b/test/compile_errors/stage1/obj/ignored_deferred_function_call.zig
@@ -0,0 +1,8 @@
+export fn foo() void {
+    defer bar();
+}
+fn bar() anyerror!i32 { return 0; }
+
+// ignored deferred function call
+//
+// tmp.zig:2:14: error: error is ignored. consider using `try`, `catch`, or `if`
diff --git a/test/compile_errors/stage1/obj/ignored_deferred_statement_value.zig b/test/compile_errors/stage1/obj/ignored_deferred_statement_value.zig
new file mode 100644
index 0000000000..effc79b039
--- /dev/null
+++ b/test/compile_errors/stage1/obj/ignored_deferred_statement_value.zig
@@ -0,0 +1,7 @@
+export fn foo() void {
+    defer {1;}
+}
+
+// ignored deferred statement value
+//
+// tmp.zig:2:12: error: expression value is ignored
diff --git a/test/compile_errors/stage1/obj/ignored_expression_in_while_continuation.zig b/test/compile_errors/stage1/obj/ignored_expression_in_while_continuation.zig
new file mode 100644
index 0000000000..fb205924e3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/ignored_expression_in_while_continuation.zig
@@ -0,0 +1,20 @@
+export fn a() void {
+    while (true) : (bad()) {}
+}
+export fn b() void {
+    var x: anyerror!i32 = 1234;
+    while (x) |_| : (bad()) {} else |_| {}
+}
+export fn c() void {
+    var x: ?i32 = 1234;
+    while (x) |_| : (bad()) {}
+}
+fn bad() anyerror!void {
+    return error.Bad;
+}
+
+// ignored expression in while continuation
+//
+// tmp.zig:2:24: error: error is ignored. consider using `try`, `catch`, or `if`
+// tmp.zig:6:25: error: error is ignored. consider using `try`, `catch`, or `if`
+// tmp.zig:10:25: error: error is ignored. consider using `try`, `catch`, or `if`
diff --git a/test/compile_errors/stage1/obj/ignored_return_value.zig b/test/compile_errors/stage1/obj/ignored_return_value.zig
new file mode 100644
index 0000000000..9c8cfa0aa4
--- /dev/null
+++ b/test/compile_errors/stage1/obj/ignored_return_value.zig
@@ -0,0 +1,8 @@
+export fn foo() void {
+    bar();
+}
+fn bar() i32 { return 0; }
+
+// ignored return value
+//
+// tmp.zig:2:8: error: expression value is ignored
diff --git a/test/compile_errors/stage1/obj/ignored_statement_value.zig b/test/compile_errors/stage1/obj/ignored_statement_value.zig
new file mode 100644
index 0000000000..7855cf584b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/ignored_statement_value.zig
@@ -0,0 +1,7 @@
+export fn foo() void {
+    1;
+}
+
+// ignored statement value
+//
+// tmp.zig:2:5: error: expression value is ignored
diff --git a/test/compile_errors/stage1/obj/illegal_comparison_of_types.zig b/test/compile_errors/stage1/obj/illegal_comparison_of_types.zig
new file mode 100644
index 0000000000..462664a400
--- /dev/null
+++ b/test/compile_errors/stage1/obj/illegal_comparison_of_types.zig
@@ -0,0 +1,18 @@
+fn bad_eql_1(a: []u8, b: []u8) bool {
+    return a == b;
+}
+const EnumWithData = union(enum) {
+    One: void,
+    Two: i32,
+};
+fn bad_eql_2(a: *const EnumWithData, b: *const EnumWithData) bool {
+    return a.* == b.*;
+}
+
+export fn entry1() usize { return @sizeOf(@TypeOf(bad_eql_1)); }
+export fn entry2() usize { return @sizeOf(@TypeOf(bad_eql_2)); }
+
+// illegal comparison of types
+//
+// tmp.zig:2:14: error: operator not allowed for type '[]u8'
+// tmp.zig:9:16: error: operator not allowed for type 'EnumWithData'
diff --git a/test/compile_errors/stage1/obj/implicit_cast_between_C_pointer_and_Zig_pointer-bad_const-align-child.zig b/test/compile_errors/stage1/obj/implicit_cast_between_C_pointer_and_Zig_pointer-bad_const-align-child.zig
new file mode 100644
index 0000000000..1dd751f989
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_cast_between_C_pointer_and_Zig_pointer-bad_const-align-child.zig
@@ -0,0 +1,40 @@
+export fn a() void {
+    var x: [*c]u8 = undefined;
+    var y: *align(4) u8 = x;
+    _ = y;
+}
+export fn b() void {
+    var x: [*c]const u8 = undefined;
+    var y: *u8 = x;
+    _ = y;
+}
+export fn c() void {
+    var x: [*c]u8 = undefined;
+    var y: *u32 = x;
+    _ = y;
+}
+export fn d() void {
+    var y: *align(1) u32 = undefined;
+    var x: [*c]u32 = y;
+    _ = x;
+}
+export fn e() void {
+    var y: *const u8 = undefined;
+    var x: [*c]u8 = y;
+    _ = x;
+}
+export fn f() void {
+    var y: *u8 = undefined;
+    var x: [*c]u32 = y;
+    _ = x;
+}
+
+// implicit cast between C pointer and Zig pointer - bad const/align/child
+//
+// tmp.zig:3:27: error: cast increases pointer alignment
+// tmp.zig:8:18: error: cast discards const qualifier
+// tmp.zig:13:19: error: expected type '*u32', found '[*c]u8'
+// tmp.zig:13:19: note: pointer type child 'u8' cannot cast into pointer type child 'u32'
+// tmp.zig:18:22: error: cast increases pointer alignment
+// tmp.zig:23:21: error: cast discards const qualifier
+// tmp.zig:28:22: error: expected type '[*c]u32', found '*u8'
diff --git a/test/compile_errors/stage1/obj/implicit_cast_const_array_to_mutable_slice.zig b/test/compile_errors/stage1/obj/implicit_cast_const_array_to_mutable_slice.zig
new file mode 100644
index 0000000000..f38c2c9fe1
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_cast_const_array_to_mutable_slice.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    const buffer: [1]u8 = [_]u8{8};
+    const sliceA: []u8 = &buffer;
+    _ = sliceA;
+}
+
+// implicit cast const array to mutable slice
+//
+// tmp.zig:3:27: error: cannot cast pointer to array literal to slice type '[]u8'
+// tmp.zig:3:27: note: cast discards const qualifier
diff --git a/test/compile_errors/stage1/obj/implicit_cast_from_array_to_mutable_slice.zig b/test/compile_errors/stage1/obj/implicit_cast_from_array_to_mutable_slice.zig
new file mode 100644
index 0000000000..60fc5baf1f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_cast_from_array_to_mutable_slice.zig
@@ -0,0 +1,9 @@
+var global_array: [10]i32 = undefined;
+fn foo(param: []i32) void {_ = param;}
+export fn entry() void {
+    foo(global_array);
+}
+
+// implicit cast from array to mutable slice
+//
+// tmp.zig:4:9: error: expected type '[]i32', found '[10]i32'
diff --git a/test/compile_errors/stage1/obj/implicit_cast_from_f64_to_f32.zig b/test/compile_errors/stage1/obj/implicit_cast_from_f64_to_f32.zig
new file mode 100644
index 0000000000..d1d4417f34
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_cast_from_f64_to_f32.zig
@@ -0,0 +1,8 @@
+var x: f64 = 1.0;
+var y: f32 = x;
+
+export fn entry() usize { return @sizeOf(@TypeOf(y)); }
+
+// implicit cast from f64 to f32
+//
+// tmp.zig:2:14: error: expected type 'f32', found 'f64'
diff --git a/test/compile_errors/stage1/obj/implicit_cast_of_error_set_not_a_subset.zig b/test/compile_errors/stage1/obj/implicit_cast_of_error_set_not_a_subset.zig
new file mode 100644
index 0000000000..9cfce6524f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_cast_of_error_set_not_a_subset.zig
@@ -0,0 +1,14 @@
+const Set1 = error{A, B};
+const Set2 = error{A, C};
+export fn entry() void {
+    foo(Set1.B);
+}
+fn foo(set1: Set1) void {
+    var x: Set2 = set1;
+    _ = x;
+}
+
+// implicit cast of error set not a subset
+//
+// tmp.zig:7:19: error: expected type 'Set2', found 'Set1'
+// tmp.zig:1:23: note: 'error.B' not a member of destination error set
diff --git a/test/compile_errors/stage1/obj/implicit_casting_C_pointers_which_would_mess_up_null_semantics.zig b/test/compile_errors/stage1/obj/implicit_casting_C_pointers_which_would_mess_up_null_semantics.zig
new file mode 100644
index 0000000000..cdc35e3963
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_casting_C_pointers_which_would_mess_up_null_semantics.zig
@@ -0,0 +1,24 @@
+export fn entry() void {
+    var slice: []const u8 = "aoeu";
+    const opt_many_ptr: [*]const u8 = slice.ptr;
+    var ptr_opt_many_ptr = &opt_many_ptr;
+    var c_ptr: [*c]const [*c]const u8 = ptr_opt_many_ptr;
+    ptr_opt_many_ptr = c_ptr;
+}
+export fn entry2() void {
+    var buf: [4]u8 = "aoeu".*;
+    var slice: []u8 = &buf;
+    var opt_many_ptr: [*]u8 = slice.ptr;
+    var ptr_opt_many_ptr = &opt_many_ptr;
+    var c_ptr: [*c][*c]const u8 = ptr_opt_many_ptr;
+    _ = c_ptr;
+}
+
+// implicit casting C pointers which would mess up null semantics
+//
+// tmp.zig:6:24: error: expected type '*const [*]const u8', found '[*c]const [*c]const u8'
+// tmp.zig:6:24: note: pointer type child '[*c]const u8' cannot cast into pointer type child '[*]const u8'
+// tmp.zig:6:24: note: '[*c]const u8' could have null values which are illegal in type '[*]const u8'
+// tmp.zig:13:35: error: expected type '[*c][*c]const u8', found '*[*]u8'
+// tmp.zig:13:35: note: pointer type child '[*]u8' cannot cast into pointer type child '[*c]const u8'
+// tmp.zig:13:35: note: mutable '[*c]const u8' allows illegal null values stored to type '[*]u8'
diff --git a/test/compile_errors/stage1/obj/implicit_casting_null_c_pointer_to_zig_pointer.zig b/test/compile_errors/stage1/obj/implicit_casting_null_c_pointer_to_zig_pointer.zig
new file mode 100644
index 0000000000..29dd6d06f9
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_casting_null_c_pointer_to_zig_pointer.zig
@@ -0,0 +1,9 @@
+comptime {
+    var c_ptr: [*c]u8 = 0;
+    var zig_ptr: *u8 = c_ptr;
+    _ = zig_ptr;
+}
+
+// implicit casting null c pointer to zig pointer
+//
+// tmp.zig:3:24: error: null pointer casted to type '*u8'
diff --git a/test/compile_errors/stage1/obj/implicit_casting_too_big_integers_to_C_pointers.zig b/test/compile_errors/stage1/obj/implicit_casting_too_big_integers_to_C_pointers.zig
new file mode 100644
index 0000000000..3deb817b76
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_casting_too_big_integers_to_C_pointers.zig
@@ -0,0 +1,14 @@
+export fn a() void {
+    var ptr: [*c]u8 = (1 << 64) + 1;
+    _ = ptr;
+}
+export fn b() void {
+    var x: u65 = 0x1234;
+    var ptr: [*c]u8 = x;
+    _ = ptr;
+}
+
+// implicit casting too big integers to C pointers
+//
+// tmp.zig:2:33: error: integer value 18446744073709551617 cannot be coerced to type 'usize'
+// tmp.zig:7:23: error: integer type 'u65' too big for implicit @intToPtr to type '[*c]u8'
diff --git a/test/compile_errors/stage1/obj/implicit_casting_undefined_c_pointer_to_zig_pointer.zig b/test/compile_errors/stage1/obj/implicit_casting_undefined_c_pointer_to_zig_pointer.zig
new file mode 100644
index 0000000000..4c19f57442
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_casting_undefined_c_pointer_to_zig_pointer.zig
@@ -0,0 +1,9 @@
+comptime {
+    var c_ptr: [*c]u8 = undefined;
+    var zig_ptr: *u8 = c_ptr;
+    _ = zig_ptr;
+}
+
+// implicit casting undefined c pointer to zig pointer
+//
+// tmp.zig:3:24: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-block_expr.zig b/test/compile_errors/stage1/obj/implicit_semicolon-block_expr.zig
new file mode 100644
index 0000000000..bacd484c0c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-block_expr.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    _ = {};
+    var good = {};
+    _ = {}
+    var bad = {};
+}
+
+// implicit semicolon - block expr
+//
+// tmp.zig:4:11: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-block_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-block_statement.zig
new file mode 100644
index 0000000000..dca8998ee6
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-block_statement.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    {}
+    var good = {};
+    ({})
+    var bad = {};
+}
+
+// implicit semicolon - block statement
+//
+// tmp.zig:4:9: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-comptime_expression.zig b/test/compile_errors/stage1/obj/implicit_semicolon-comptime_expression.zig
new file mode 100644
index 0000000000..a3f679a59a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-comptime_expression.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    _ = comptime {};
+    var good = {};
+    _ = comptime {}
+    var bad = {};
+}
+
+// implicit semicolon - comptime expression
+//
+// tmp.zig:4:20: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-comptime_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-comptime_statement.zig
new file mode 100644
index 0000000000..299b081e4b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-comptime_statement.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    comptime {}
+    var good = {};
+    comptime ({})
+    var bad = {};
+}
+
+// implicit semicolon - comptime statement
+//
+// tmp.zig:4:18: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-defer.zig b/test/compile_errors/stage1/obj/implicit_semicolon-defer.zig
new file mode 100644
index 0000000000..7e58d930d6
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-defer.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    defer {}
+    var good = {};
+    defer ({})
+    var bad = {};
+}
+
+// implicit semicolon - defer
+//
+// tmp.zig:4:15: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-for_expression.zig b/test/compile_errors/stage1/obj/implicit_semicolon-for_expression.zig
new file mode 100644
index 0000000000..3e332ef189
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-for_expression.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    _ = for(foo()) |_| {};
+    var good = {};
+    _ = for(foo()) |_| {}
+    var bad = {};
+}
+
+// implicit semicolon - for expression
+//
+// tmp.zig:4:26: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-for_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-for_statement.zig
new file mode 100644
index 0000000000..092c28889f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-for_statement.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    for(foo()) |_| {}
+    var good = {};
+    for(foo()) |_| ({})
+    var bad = {};
+}
+
+// implicit semicolon - for statement
+//
+// tmp.zig:4:24: error: expected ';' or 'else' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if-else_expression.zig b/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if-else_expression.zig
new file mode 100644
index 0000000000..fd55529a8f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if-else_expression.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    _ = if(true) {} else if(true) {} else {};
+    var good = {};
+    _ = if(true) {} else if(true) {} else {}
+    var bad = {};
+}
+
+// implicit semicolon - if-else-if-else expression
+//
+// tmp.zig:4:45: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if-else_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if-else_statement.zig
new file mode 100644
index 0000000000..3d59e38aa9
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if-else_statement.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    if(true) {} else if(true) {} else {}
+    var good = {};
+    if(true) ({}) else if(true) ({}) else ({})
+    var bad = {};
+}
+
+// implicit semicolon - if-else-if-else statement
+//
+// tmp.zig:4:47: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if_expression.zig b/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if_expression.zig
new file mode 100644
index 0000000000..2caaad52b8
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if_expression.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    _ = if(true) {} else if(true) {};
+    var good = {};
+    _ = if(true) {} else if(true) {}
+    var bad = {};
+}
+
+// implicit semicolon - if-else-if expression
+//
+// tmp.zig:4:37: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if_statement.zig
new file mode 100644
index 0000000000..263aa36da3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if_statement.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    if(true) {} else if(true) {}
+    var good = {};
+    if(true) ({}) else if(true) ({})
+    var bad = {};
+}
+
+// implicit semicolon - if-else-if statement
+//
+// tmp.zig:4:37: error: expected ';' or 'else' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-if-else_expression.zig b/test/compile_errors/stage1/obj/implicit_semicolon-if-else_expression.zig
new file mode 100644
index 0000000000..12d993f6a7
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-if-else_expression.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    _ = if(true) {} else {};
+    var good = {};
+    _ = if(true) {} else {}
+    var bad = {};
+}
+
+// implicit semicolon - if-else expression
+//
+// tmp.zig:4:28: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-if-else_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-if-else_statement.zig
new file mode 100644
index 0000000000..401fc46a51
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-if-else_statement.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    if(true) {} else {}
+    var good = {};
+    if(true) ({}) else ({})
+    var bad = {};
+}
+
+// implicit semicolon - if-else statement
+//
+// tmp.zig:4:28: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-if_expression.zig b/test/compile_errors/stage1/obj/implicit_semicolon-if_expression.zig
new file mode 100644
index 0000000000..b3a81e9d36
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-if_expression.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    _ = if(true) {};
+    var good = {};
+    _ = if(true) {}
+    var bad = {};
+}
+
+// implicit semicolon - if expression
+//
+// tmp.zig:4:20: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-if_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-if_statement.zig
new file mode 100644
index 0000000000..e543925d78
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-if_statement.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    if(true) {}
+    var good = {};
+    if(true) ({})
+    var bad = {};
+}
+
+// implicit semicolon - if statement
+//
+// tmp.zig:4:18: error: expected ';' or 'else' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-test_expression.zig b/test/compile_errors/stage1/obj/implicit_semicolon-test_expression.zig
new file mode 100644
index 0000000000..1702bec048
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-test_expression.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    _ = if (foo()) |_| {};
+    var good = {};
+    _ = if (foo()) |_| {}
+    var bad = {};
+}
+
+// implicit semicolon - test expression
+//
+// tmp.zig:4:26: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-test_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-test_statement.zig
new file mode 100644
index 0000000000..8715ca9ac0
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-test_statement.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    if (foo()) |_| {}
+    var good = {};
+    if (foo()) |_| ({})
+    var bad = {};
+}
+
+// implicit semicolon - test statement
+//
+// tmp.zig:4:24: error: expected ';' or 'else' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-while-continue_expression.zig b/test/compile_errors/stage1/obj/implicit_semicolon-while-continue_expression.zig
new file mode 100644
index 0000000000..b1a7bdbab8
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-while-continue_expression.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    _ = while(true):({}) {};
+    var good = {};
+    _ = while(true):({}) {}
+    var bad = {};
+}
+
+// implicit semicolon - while-continue expression
+//
+// tmp.zig:4:28: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-while-continue_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-while-continue_statement.zig
new file mode 100644
index 0000000000..601f1f0318
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-while-continue_statement.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    while(true):({}) {}
+    var good = {};
+    while(true):({}) ({})
+    var bad = {};
+}
+
+// implicit semicolon - while-continue statement
+//
+// tmp.zig:4:26: error: expected ';' or 'else' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-while_expression.zig b/test/compile_errors/stage1/obj/implicit_semicolon-while_expression.zig
new file mode 100644
index 0000000000..9580889bd7
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-while_expression.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    _ = while(true) {};
+    var good = {};
+    _ = while(true) {}
+    var bad = {};
+}
+
+// implicit semicolon - while expression
+//
+// tmp.zig:4:23: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-while_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-while_statement.zig
new file mode 100644
index 0000000000..ab64dd991d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-while_statement.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    while(true) {}
+    var good = {};
+    while(true) 1
+    var bad = {};
+}
+
+// implicit semicolon - while statement
+//
+// tmp.zig:4:18: error: expected ';' or 'else' after statement
diff --git a/test/compile_errors/stage1/obj/implicitly_casting_enum_to_tag_type.zig b/test/compile_errors/stage1/obj/implicitly_casting_enum_to_tag_type.zig
new file mode 100644
index 0000000000..26806a3914
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicitly_casting_enum_to_tag_type.zig
@@ -0,0 +1,15 @@
+const Small = enum(u2) {
+    One,
+    Two,
+    Three,
+    Four,
+};
+
+export fn entry() void {
+    var x: u2 = Small.Two;
+    _ = x;
+}
+
+// implicitly casting enum to tag type
+//
+// tmp.zig:9:22: error: expected type 'u2', found 'Small'
diff --git a/test/compile_errors/stage1/obj/implicitly_increasing_pointer_alignment.zig b/test/compile_errors/stage1/obj/implicitly_increasing_pointer_alignment.zig
new file mode 100644
index 0000000000..8f743a3b59
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicitly_increasing_pointer_alignment.zig
@@ -0,0 +1,17 @@
+const Foo = packed struct {
+    a: u8,
+    b: u32,
+};
+
+export fn entry() void {
+    var foo = Foo { .a = 1, .b = 10 };
+    bar(&foo.b);
+}
+
+fn bar(x: *u32) void {
+    x.* += 1;
+}
+
+// implicitly increasing pointer alignment
+//
+// tmp.zig:8:13: error: expected type '*u32', found '*align(1) u32'
diff --git a/test/compile_errors/stage1/obj/implicitly_increasing_slice_alignment.zig b/test/compile_errors/stage1/obj/implicitly_increasing_slice_alignment.zig
new file mode 100644
index 0000000000..c1d4ec2a0f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicitly_increasing_slice_alignment.zig
@@ -0,0 +1,20 @@
+const Foo = packed struct {
+    a: u8,
+    b: u32,
+};
+
+export fn entry() void {
+    var foo = Foo { .a = 1, .b = 10 };
+    foo.b += 1;
+    bar(@as(*[1]u32, &foo.b)[0..]);
+}
+
+fn bar(x: []u32) void {
+    x[0] += 1;
+}
+
+// implicitly increasing slice alignment
+//
+// tmp.zig:9:26: error: cast increases pointer alignment
+// tmp.zig:9:26: note: '*align(1) u32' has alignment 1
+// tmp.zig:9:26: note: '*[1]u32' has alignment 4
diff --git a/test/compile_errors/stage1/obj/import_outside_package_path.zig b/test/compile_errors/stage1/obj/import_outside_package_path.zig
new file mode 100644
index 0000000000..843de67b63
--- /dev/null
+++ b/test/compile_errors/stage1/obj/import_outside_package_path.zig
@@ -0,0 +1,7 @@
+comptime{
+    _ = @import("../a.zig");
+}
+
+// import outside package path
+//
+// tmp.zig:2:9: error: import of file outside package path: '../a.zig'
diff --git a/test/compile_errors/stage1/obj/incorrect_return_type.zig b/test/compile_errors/stage1/obj/incorrect_return_type.zig
new file mode 100644
index 0000000000..86c5f23dc3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/incorrect_return_type.zig
@@ -0,0 +1,19 @@
+ pub export fn entry() void{
+     _ = foo();
+ }
+ const A = struct {
+     a: u32,
+ };
+ fn foo() A {
+     return bar();
+ }
+ const B = struct {
+     a: u32,
+ };
+ fn bar() B {
+     unreachable;
+ }
+
+// incorrect return type
+//
+// tmp.zig:8:16: error: expected type 'A', found 'B'
diff --git a/test/compile_errors/stage1/obj/increase_pointer_alignment_in_ptrCast.zig b/test/compile_errors/stage1/obj/increase_pointer_alignment_in_ptrCast.zig
new file mode 100644
index 0000000000..01d8ac821e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/increase_pointer_alignment_in_ptrCast.zig
@@ -0,0 +1,11 @@
+export fn entry() u32 {
+    var bytes: [4]u8 = [_]u8{0x01, 0x02, 0x03, 0x04};
+    const ptr = @ptrCast(*u32, &bytes[0]);
+    return ptr.*;
+}
+
+// increase pointer alignment in @ptrCast
+//
+// tmp.zig:3:17: error: cast increases pointer alignment
+// tmp.zig:3:38: note: '*u8' has alignment 1
+// tmp.zig:3:26: note: '*u32' has alignment 4
diff --git a/test/compile_errors/stage1/obj/indexing_a_undefined_slice_at_comptime.zig b/test/compile_errors/stage1/obj/indexing_a_undefined_slice_at_comptime.zig
new file mode 100644
index 0000000000..4653d8668e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/indexing_a_undefined_slice_at_comptime.zig
@@ -0,0 +1,8 @@
+comptime {
+    var slice: []u8 = undefined;
+    slice[0] = 2;
+}
+
+// indexing a undefined slice at comptime
+//
+// tmp.zig:3:10: error: index 0 outside slice of size 0
diff --git a/test/compile_errors/stage1/obj/indexing_an_array_of_size_zero.zig b/test/compile_errors/stage1/obj/indexing_an_array_of_size_zero.zig
new file mode 100644
index 0000000000..9066985de5
--- /dev/null
+++ b/test/compile_errors/stage1/obj/indexing_an_array_of_size_zero.zig
@@ -0,0 +1,9 @@
+const array = [_]u8{};
+export fn foo() void {
+    const pointer = &array[0];
+    _ = pointer;
+}
+
+// indexing an array of size zero
+//
+// tmp.zig:3:27: error: accessing a zero length array is not allowed
diff --git a/test/compile_errors/stage1/obj/indexing_an_array_of_size_zero_with_runtime_index.zig b/test/compile_errors/stage1/obj/indexing_an_array_of_size_zero_with_runtime_index.zig
new file mode 100644
index 0000000000..c5f3acb3cc
--- /dev/null
+++ b/test/compile_errors/stage1/obj/indexing_an_array_of_size_zero_with_runtime_index.zig
@@ -0,0 +1,10 @@
+const array = [_]u8{};
+export fn foo() void {
+    var index: usize = 0;
+    const pointer = &array[index];
+    _ = pointer;
+}
+
+// indexing an array of size zero with runtime index
+//
+// tmp.zig:4:27: error: accessing a zero length array is not allowed
diff --git a/test/compile_errors/stage1/obj/indexing_single-item_pointer.zig b/test/compile_errors/stage1/obj/indexing_single-item_pointer.zig
new file mode 100644
index 0000000000..e228083964
--- /dev/null
+++ b/test/compile_errors/stage1/obj/indexing_single-item_pointer.zig
@@ -0,0 +1,7 @@
+export fn entry(ptr: *i32) i32 {
+    return ptr[1];
+}
+
+// indexing single-item pointer
+//
+// tmp.zig:2:15: error: index of single-item pointer
diff --git a/test/compile_errors/stage1/obj/indirect_recursion_of_async_functions_detected.zig b/test/compile_errors/stage1/obj/indirect_recursion_of_async_functions_detected.zig
new file mode 100644
index 0000000000..5765f7aae1
--- /dev/null
+++ b/test/compile_errors/stage1/obj/indirect_recursion_of_async_functions_detected.zig
@@ -0,0 +1,34 @@
+var frame: ?anyframe = null;
+
+export fn a() void {
+    _ = async rangeSum(10);
+    while (frame) |f| resume f;
+}
+
+fn rangeSum(x: i32) i32 {
+    suspend {
+        frame = @frame();
+    }
+    frame = null;
+
+    if (x == 0) return 0;
+    var child = rangeSumIndirect(x - 1);
+    return child + 1;
+}
+
+fn rangeSumIndirect(x: i32) i32 {
+    suspend {
+        frame = @frame();
+    }
+    frame = null;
+
+    if (x == 0) return 0;
+    var child = rangeSum(x - 1);
+    return child + 1;
+}
+
+// indirect recursion of async functions detected
+//
+// tmp.zig:8:1: error: '@Frame(rangeSum)' depends on itself
+// tmp.zig:15:33: note: when analyzing type '@Frame(rangeSum)' here
+// tmp.zig:26:25: note: when analyzing type '@Frame(rangeSumIndirect)' here
diff --git a/test/compile_errors/stage1/obj/indirect_struct_loop.zig b/test/compile_errors/stage1/obj/indirect_struct_loop.zig
new file mode 100644
index 0000000000..903a1bda39
--- /dev/null
+++ b/test/compile_errors/stage1/obj/indirect_struct_loop.zig
@@ -0,0 +1,8 @@
+const A = struct { b : B, };
+const B = struct { c : C, };
+const C = struct { a : A, };
+export fn entry() usize { return @sizeOf(A); }
+
+// indirect struct loop
+//
+// tmp.zig:1:11: error: struct 'A' depends on itself
diff --git a/test/compile_errors/stage1/obj/inferred_array_size_invalid_here.zig b/test/compile_errors/stage1/obj/inferred_array_size_invalid_here.zig
new file mode 100644
index 0000000000..a45b6aa027
--- /dev/null
+++ b/test/compile_errors/stage1/obj/inferred_array_size_invalid_here.zig
@@ -0,0 +1,14 @@
+export fn entry() void {
+    const x = [_]u8;
+    _ = x;
+}
+export fn entry2() void {
+    const S = struct { a: *const [_]u8 };
+    var a = .{ S{} };
+    _ = a;
+}
+
+// inferred array size invalid here
+//
+// tmp.zig:2:16: error: unable to infer array size
+// tmp.zig:6:35: error: unable to infer array size
diff --git a/test/compile_errors/stage1/obj/inferring_error_set_of_function_pointer.zig b/test/compile_errors/stage1/obj/inferring_error_set_of_function_pointer.zig
new file mode 100644
index 0000000000..ead5afd248
--- /dev/null
+++ b/test/compile_errors/stage1/obj/inferring_error_set_of_function_pointer.zig
@@ -0,0 +1,7 @@
+comptime {
+    const z: ?fn()!void = null;
+}
+
+// inferring error set of function pointer
+//
+// tmp.zig:2:19: error: function prototype may not have inferred error set
diff --git a/test/compile_errors/stage1/obj/initializing_array_with_struct_syntax.zig b/test/compile_errors/stage1/obj/initializing_array_with_struct_syntax.zig
new file mode 100644
index 0000000000..15412ac5ab
--- /dev/null
+++ b/test/compile_errors/stage1/obj/initializing_array_with_struct_syntax.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    const x = [_]u8{ .y = 2 };
+    _ = x;
+}
+
+// initializing array with struct syntax
+//
+// tmp.zig:2:15: error: initializing array with struct syntax
diff --git a/test/compile_errors/stage1/obj/instantiating_an_undefined_value_for_an_invalid_struct_that_contains_itself.zig b/test/compile_errors/stage1/obj/instantiating_an_undefined_value_for_an_invalid_struct_that_contains_itself.zig
new file mode 100644
index 0000000000..c39908c9b5
--- /dev/null
+++ b/test/compile_errors/stage1/obj/instantiating_an_undefined_value_for_an_invalid_struct_that_contains_itself.zig
@@ -0,0 +1,13 @@
+const Foo = struct {
+    x: Foo,
+};
+
+var foo: Foo = undefined;
+
+export fn entry() usize {
+    return @sizeOf(@TypeOf(foo.x));
+}
+
+// instantiating an undefined value for an invalid struct that contains itself
+//
+// tmp.zig:1:13: error: struct 'Foo' depends on itself
diff --git a/test/compile_errors/stage1/obj/intToPtr_with_misaligned_address.zig b/test/compile_errors/stage1/obj/intToPtr_with_misaligned_address.zig
new file mode 100644
index 0000000000..a04f318f0c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/intToPtr_with_misaligned_address.zig
@@ -0,0 +1,8 @@
+pub fn main() void {
+    var y = @intToPtr([*]align(4) u8, 5);
+    _ = y;
+}
+
+// intToPtr with misaligned address
+//
+// tmp.zig:2:13: error: pointer type '[*]align(4) u8' requires aligned address
diff --git a/test/compile_errors/stage1/obj/int_to_err_global_invalid_number.zig b/test/compile_errors/stage1/obj/int_to_err_global_invalid_number.zig
new file mode 100644
index 0000000000..180da60ab2
--- /dev/null
+++ b/test/compile_errors/stage1/obj/int_to_err_global_invalid_number.zig
@@ -0,0 +1,13 @@
+const Set1 = error{
+    A,
+    B,
+};
+comptime {
+    var x: u16 = 3;
+    var y = @intToError(x);
+    _ = y;
+}
+
+// int to err global invalid number
+//
+// tmp.zig:7:13: error: integer value 3 represents no error
diff --git a/test/compile_errors/stage1/obj/int_to_err_non_global_invalid_number.zig b/test/compile_errors/stage1/obj/int_to_err_non_global_invalid_number.zig
new file mode 100644
index 0000000000..a6627891d0
--- /dev/null
+++ b/test/compile_errors/stage1/obj/int_to_err_non_global_invalid_number.zig
@@ -0,0 +1,17 @@
+const Set1 = error{
+    A,
+    B,
+};
+const Set2 = error{
+    A,
+    C,
+};
+comptime {
+    var x = @errorToInt(Set1.B);
+    var y = @errSetCast(Set2, @intToError(x));
+    _ = y;
+}
+
+// int to err non global invalid number
+//
+// tmp.zig:11:13: error: error.B not a member of error set 'Set2'
diff --git a/test/compile_errors/stage1/obj/int_to_ptr_of_0_bits.zig b/test/compile_errors/stage1/obj/int_to_ptr_of_0_bits.zig
new file mode 100644
index 0000000000..7047600c1b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/int_to_ptr_of_0_bits.zig
@@ -0,0 +1,9 @@
+export fn foo() void {
+    var x: usize = 0x1000;
+    var y: *void = @intToPtr(*void, x);
+    _ = y;
+}
+
+// int to ptr of 0 bits
+//
+// tmp.zig:3:30: error: type '*void' has 0 bits and cannot store information
diff --git a/test/compile_errors/stage1/obj/integer_cast_truncates_bits.zig b/test/compile_errors/stage1/obj/integer_cast_truncates_bits.zig
new file mode 100644
index 0000000000..a5c8036152
--- /dev/null
+++ b/test/compile_errors/stage1/obj/integer_cast_truncates_bits.zig
@@ -0,0 +1,29 @@
+export fn entry1() void {
+    const spartan_count: u16 = 300;
+    const byte = @intCast(u8, spartan_count);
+    _ = byte;
+}
+export fn entry2() void {
+    const spartan_count: u16 = 300;
+    const byte: u8 = spartan_count;
+    _ = byte;
+}
+export fn entry3() void {
+    var spartan_count: u16 = 300;
+    var byte: u8 = spartan_count;
+    _ = byte;
+}
+export fn entry4() void {
+    var signed: i8 = -1;
+    var unsigned: u64 = signed;
+    _ = unsigned;
+}
+
+// integer cast truncates bits
+//
+// tmp.zig:3:18: error: cast from 'u16' to 'u8' truncates bits
+// tmp.zig:8:22: error: integer value 300 cannot be coerced to type 'u8'
+// tmp.zig:13:20: error: expected type 'u8', found 'u16'
+// tmp.zig:13:20: note: unsigned 8-bit int cannot represent all possible unsigned 16-bit values
+// tmp.zig:18:25: error: expected type 'u64', found 'i8'
+// tmp.zig:18:25: note: unsigned 64-bit int cannot represent all possible signed 8-bit values
diff --git a/test/compile_errors/stage1/obj/integer_overflow_error.zig b/test/compile_errors/stage1/obj/integer_overflow_error.zig
new file mode 100644
index 0000000000..568cc5034b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/integer_overflow_error.zig
@@ -0,0 +1,6 @@
+const x : u8 = 300;
+export fn entry() usize { return @sizeOf(@TypeOf(x)); }
+
+// integer overflow error
+//
+// tmp.zig:1:16: error: integer value 300 cannot be coerced to type 'u8'
diff --git a/test/compile_errors/stage1/obj/integer_underflow_error.zig b/test/compile_errors/stage1/obj/integer_underflow_error.zig
new file mode 100644
index 0000000000..01171589d9
--- /dev/null
+++ b/test/compile_errors/stage1/obj/integer_underflow_error.zig
@@ -0,0 +1,7 @@
+export fn entry() void {
+    _ = @intToPtr(*anyopaque, ~@as(usize, @import("std").math.maxInt(usize)) - 1);
+}
+
+// integer underflow error
+//
+// :2:78: error: operation caused overflow
diff --git a/test/compile_errors/stage1/obj/invalid_break_expression.zig b/test/compile_errors/stage1/obj/invalid_break_expression.zig
new file mode 100644
index 0000000000..b6d27d6ea5
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_break_expression.zig
@@ -0,0 +1,7 @@
+export fn f() void {
+    break;
+}
+
+// invalid break expression
+//
+// tmp.zig:2:5: error: break expression outside loop
diff --git a/test/compile_errors/stage1/obj/invalid_builtin_fn.zig b/test/compile_errors/stage1/obj/invalid_builtin_fn.zig
new file mode 100644
index 0000000000..e10baf5965
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_builtin_fn.zig
@@ -0,0 +1,7 @@
+fn f() @bogus(foo) {
+}
+export fn entry() void { _ = f(); }
+
+// invalid builtin fn
+//
+// tmp.zig:1:8: error: invalid builtin function: '@bogus'
diff --git a/test/compile_errors/stage1/obj/invalid_cast_from_integral_type_to_enum.zig b/test/compile_errors/stage1/obj/invalid_cast_from_integral_type_to_enum.zig
new file mode 100644
index 0000000000..476a4929ef
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_cast_from_integral_type_to_enum.zig
@@ -0,0 +1,15 @@
+const E = enum(usize) { One, Two };
+
+export fn entry() void {
+    foo(1);
+}
+
+fn foo(x: usize) void {
+    switch (x) {
+        E.One => {},
+    }
+}
+
+// invalid cast from integral type to enum
+//
+// tmp.zig:9:10: error: expected type 'usize', found 'E'
diff --git a/test/compile_errors/stage1/obj/invalid_comparison_for_function_pointers.zig b/test/compile_errors/stage1/obj/invalid_comparison_for_function_pointers.zig
new file mode 100644
index 0000000000..f7827ed0e9
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_comparison_for_function_pointers.zig
@@ -0,0 +1,8 @@
+fn foo() void {}
+const invalid = foo > foo;
+
+export fn entry() usize { return @sizeOf(@TypeOf(invalid)); }
+
+// invalid comparison for function pointers
+//
+// tmp.zig:2:21: error: operator not allowed for type 'fn() void'
diff --git a/test/compile_errors/stage1/obj/invalid_continue_expression.zig b/test/compile_errors/stage1/obj/invalid_continue_expression.zig
new file mode 100644
index 0000000000..9bd40c516a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_continue_expression.zig
@@ -0,0 +1,7 @@
+export fn f() void {
+    continue;
+}
+
+// invalid continue expression
+//
+// tmp.zig:2:5: error: continue expression outside loop
diff --git a/test/compile_errors/stage1/obj/invalid_deref_on_switch_target.zig b/test/compile_errors/stage1/obj/invalid_deref_on_switch_target.zig
new file mode 100644
index 0000000000..47dc0a52c1
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_deref_on_switch_target.zig
@@ -0,0 +1,15 @@
+comptime {
+    var tile = Tile.Empty;
+    switch (tile.*) {
+        Tile.Empty => {},
+        Tile.Filled => {},
+    }
+}
+const Tile = enum {
+    Empty,
+    Filled,
+};
+
+// invalid deref on switch target
+//
+// tmp.zig:3:17: error: attempt to dereference non-pointer type 'Tile'
diff --git a/test/compile_errors/stage1/obj/invalid_empty_unicode_escape.zig b/test/compile_errors/stage1/obj/invalid_empty_unicode_escape.zig
new file mode 100644
index 0000000000..d8853110a4
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_empty_unicode_escape.zig
@@ -0,0 +1,7 @@
+export fn entry() void {
+    const a = '\u{}';
+}
+
+// invalid empty unicode escape
+//
+// tmp.zig:2:19: error: empty unicode escape sequence
diff --git a/test/compile_errors/stage1/obj/invalid_exponent_in_float_literal-1.zig b/test/compile_errors/stage1/obj/invalid_exponent_in_float_literal-1.zig
new file mode 100644
index 0000000000..4f13de2a62
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_exponent_in_float_literal-1.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: f128 = 0x1.0p1ab1;
+    _ = bad;
+}
+
+// invalid exponent in float literal - 1
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:28: note: invalid byte: 'a'
diff --git a/test/compile_errors/stage1/obj/invalid_exponent_in_float_literal-2.zig b/test/compile_errors/stage1/obj/invalid_exponent_in_float_literal-2.zig
new file mode 100644
index 0000000000..f612d8c510
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_exponent_in_float_literal-2.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: f128 = 0x1.0p50F;
+    _ = bad;
+}
+
+// invalid exponent in float literal - 2
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:29: note: invalid byte: 'F'
diff --git a/test/compile_errors/stage1/obj/invalid_field_access_in_comptime.zig b/test/compile_errors/stage1/obj/invalid_field_access_in_comptime.zig
new file mode 100644
index 0000000000..e8395b5e7a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_field_access_in_comptime.zig
@@ -0,0 +1,5 @@
+comptime { var x = doesnt_exist.whatever; _ = x; }
+
+// invalid field access in comptime
+//
+// tmp.zig:1:20: error: use of undeclared identifier 'doesnt_exist'
diff --git a/test/compile_errors/stage1/obj/invalid_field_in_struct_value_expression.zig b/test/compile_errors/stage1/obj/invalid_field_in_struct_value_expression.zig
new file mode 100644
index 0000000000..41511f0d0a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_field_in_struct_value_expression.zig
@@ -0,0 +1,17 @@
+const A = struct {
+    x : i32,
+    y : i32,
+    z : i32,
+};
+export fn f() void {
+    const a = A {
+        .z = 4,
+        .y = 2,
+        .foo = 42,
+    };
+    _ = a;
+}
+
+// invalid field in struct value expression
+//
+// tmp.zig:10:9: error: no member named 'foo' in struct 'A'
diff --git a/test/compile_errors/stage1/obj/invalid_float_literal.zig b/test/compile_errors/stage1/obj/invalid_float_literal.zig
new file mode 100644
index 0000000000..5d9a26032f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_float_literal.zig
@@ -0,0 +1,11 @@
+const std = @import("std");
+
+pub fn main() void {
+    var bad_float :f32 = 0.0;
+    bad_float = bad_float + .20;
+    std.debug.assert(bad_float < 1.0);
+}
+
+// invalid float literal
+//
+// tmp.zig:5:29: error: expected expression, found '.'
diff --git a/test/compile_errors/stage1/obj/invalid_legacy_unicode_escape.zig b/test/compile_errors/stage1/obj/invalid_legacy_unicode_escape.zig
new file mode 100644
index 0000000000..58e1390345
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_legacy_unicode_escape.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    const a = '\U1234';
+}
+
+// invalid legacy unicode escape
+//
+// tmp.zig:2:15: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:18: note: invalid byte: '1'
diff --git a/test/compile_errors/stage1/obj/invalid_maybe_type.zig b/test/compile_errors/stage1/obj/invalid_maybe_type.zig
new file mode 100644
index 0000000000..9edc313526
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_maybe_type.zig
@@ -0,0 +1,7 @@
+export fn f() void {
+    if (true) |x| { _ = x; }
+}
+
+// invalid maybe type
+//
+// tmp.zig:2:9: error: expected optional type, found 'bool'
diff --git a/test/compile_errors/stage1/obj/invalid_member_of_builtin_enum.zig b/test/compile_errors/stage1/obj/invalid_member_of_builtin_enum.zig
new file mode 100644
index 0000000000..32888ff84b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_member_of_builtin_enum.zig
@@ -0,0 +1,9 @@
+const builtin = @import("std").builtin;
+export fn entry() void {
+    const foo = builtin.Mode.x86;
+    _ = foo;
+}
+
+// invalid member of builtin enum
+//
+// tmp.zig:3:29: error: container 'std.builtin.Mode' has no member called 'x86'
diff --git a/test/compile_errors/stage1/obj/invalid_multiple_dereferences.zig b/test/compile_errors/stage1/obj/invalid_multiple_dereferences.zig
new file mode 100644
index 0000000000..bdf5ccb228
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_multiple_dereferences.zig
@@ -0,0 +1,17 @@
+export fn a() void {
+    var box = Box{ .field = 0 };
+    box.*.field = 1;
+}
+export fn b() void {
+    var box = Box{ .field = 0 };
+    var boxPtr = &box;
+    boxPtr.*.*.field = 1;
+}
+pub const Box = struct {
+    field: i32,
+};
+
+// invalid multiple dereferences
+//
+// tmp.zig:3:8: error: attempt to dereference non-pointer type 'Box'
+// tmp.zig:8:13: error: attempt to dereference non-pointer type 'Box'
diff --git a/test/compile_errors/stage1/obj/invalid_optional_type_in_extern_struct.zig b/test/compile_errors/stage1/obj/invalid_optional_type_in_extern_struct.zig
new file mode 100644
index 0000000000..17d9477abf
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_optional_type_in_extern_struct.zig
@@ -0,0 +1,8 @@
+const stroo = extern struct {
+    moo: ?[*c]u8,
+};
+export fn testf(fluff: *stroo) void { _ = fluff; }
+
+// invalid optional type in extern struct
+//
+// tmp.zig:2:5: error: extern structs cannot contain fields of type '?[*c]u8'
diff --git a/test/compile_errors/stage1/obj/invalid_pointer_for_var_type.zig b/test/compile_errors/stage1/obj/invalid_pointer_for_var_type.zig
new file mode 100644
index 0000000000..599aef54f2
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_pointer_for_var_type.zig
@@ -0,0 +1,11 @@
+extern fn ext() usize;
+var bytes: [ext()]u8 = undefined;
+export fn f() void {
+    for (bytes) |*b, i| {
+        b.* = @as(u8, i);
+    }
+}
+
+// invalid pointer for var type
+//
+// tmp.zig:2:13: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/invalid_pointer_syntax.zig b/test/compile_errors/stage1/obj/invalid_pointer_syntax.zig
new file mode 100644
index 0000000000..d4b68200b6
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_pointer_syntax.zig
@@ -0,0 +1,7 @@
+export fn foo() void {
+    var guid: *:0 const u8 = undefined;
+}
+
+// invalid pointer syntax
+//
+// tmp.zig:2:16: error: expected type expression, found ':'
diff --git a/test/compile_errors/stage1/obj/invalid_shift_amount_error.zig b/test/compile_errors/stage1/obj/invalid_shift_amount_error.zig
new file mode 100644
index 0000000000..f4fe1cb2ff
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_shift_amount_error.zig
@@ -0,0 +1,9 @@
+const x : u8 = 2;
+fn f() u16 {
+    return x << 8;
+}
+export fn entry() u16 { return f(); }
+
+// invalid shift amount error
+//
+// tmp.zig:3:17: error: integer value 8 cannot be coerced to type 'u3'
diff --git a/test/compile_errors/stage1/obj/invalid_struct_field.zig b/test/compile_errors/stage1/obj/invalid_struct_field.zig
new file mode 100644
index 0000000000..2d85914907
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_struct_field.zig
@@ -0,0 +1,17 @@
+const A = struct { x : i32, };
+export fn f() void {
+    var a : A = undefined;
+    a.foo = 1;
+    const y = a.bar;
+    _ = y;
+}
+export fn g() void {
+    var a : A = undefined;
+    const y = a.bar;
+    _ = y;
+}
+
+// invalid struct field
+//
+// tmp.zig:4:6: error: no member named 'foo' in struct 'A'
+// tmp.zig:10:16: error: no member named 'bar' in struct 'A'
diff --git a/test/compile_errors/stage1/obj/invalid_suspend_in_exported_function.zig b/test/compile_errors/stage1/obj/invalid_suspend_in_exported_function.zig
new file mode 100644
index 0000000000..da808563a5
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_suspend_in_exported_function.zig
@@ -0,0 +1,13 @@
+export fn entry() void {
+    var frame = async func();
+    var result = await frame;
+    _ = result;
+}
+fn func() void {
+    suspend {}
+}
+
+// invalid suspend in exported function
+//
+// tmp.zig:1:1: error: function with calling convention 'C' cannot be async
+// tmp.zig:3:18: note: await here is a suspend point
diff --git a/test/compile_errors/stage1/obj/invalid_type.zig b/test/compile_errors/stage1/obj/invalid_type.zig
new file mode 100644
index 0000000000..0307300517
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_type.zig
@@ -0,0 +1,6 @@
+fn a() bogus {}
+export fn entry() void { _ = a(); }
+
+// invalid type
+//
+// tmp.zig:1:8: error: use of undeclared identifier 'bogus'
diff --git a/test/compile_errors/stage1/obj/invalid_type_used_in_array_type.zig b/test/compile_errors/stage1/obj/invalid_type_used_in_array_type.zig
new file mode 100644
index 0000000000..26f0e6a7db
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_type_used_in_array_type.zig
@@ -0,0 +1,12 @@
+const Item = struct {
+    field: SomeNonexistentType,
+};
+var items: [100]Item = undefined;
+export fn entry() void {
+    const a = items[0];
+    _ = a;
+}
+
+// invalid type used in array type
+//
+// tmp.zig:2:12: error: use of undeclared identifier 'SomeNonexistentType'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-1.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-1.zig
new file mode 100644
index 0000000000..5cea540104
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-1.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: f128 = 0._0;
+    _ = bad;
+}
+
+// invalid underscore placement in float literal - 1
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:23: note: invalid byte: '_'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-10.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-10.zig
new file mode 100644
index 0000000000..d789579a2b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-10.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: f128 = 1.0__0e-1;
+    _ = bad;
+}
+
+// invalid underscore placement in float literal - 10
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:25: note: invalid byte: '_'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-11.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-11.zig
new file mode 100644
index 0000000000..197b114090
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-11.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: f128 = 1.0e-1__0;
+    _ = bad;
+}
+
+// invalid underscore placement in float literal - 11
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:28: note: invalid byte: '_'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-12.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-12.zig
new file mode 100644
index 0000000000..1d25c9f4b4
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-12.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: f128 = 0_x0.0;
+    _ = bad;
+}
+
+// invalid underscore placement in float literal - 12
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:23: note: invalid byte: 'x'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-13.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-13.zig
new file mode 100644
index 0000000000..c3de75ed32
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-13.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: f128 = 0x_0.0;
+    _ = bad;
+}
+
+// invalid underscore placement in float literal - 13
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:23: note: invalid byte: '_'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-14.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-14.zig
new file mode 100644
index 0000000000..cbb967e926
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-14.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: f128 = 0x0.0_p1;
+    _ = bad;
+}
+
+// invalid underscore placement in float literal - 14
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:27: note: invalid byte: 'p'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-2.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-2.zig
new file mode 100644
index 0000000000..e83c1b420b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-2.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: f128 = 0_.0;
+    _ = bad;
+}
+
+// invalid underscore placement in float literal - 2
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:23: note: invalid byte: '.'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-3.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-3.zig
new file mode 100644
index 0000000000..f9ca8e0d7c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-3.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: f128 = 0.0_;
+    _ = bad;
+}
+
+// invalid underscore placement in float literal - 3
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:25: note: invalid byte: ';'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-4.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-4.zig
new file mode 100644
index 0000000000..20e8d3692e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-4.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: f128 = 1.0e_1;
+    _ = bad;
+}
+
+// invalid underscore placement in float literal - 4
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:25: note: invalid byte: '_'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-5.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-5.zig
new file mode 100644
index 0000000000..3719f54e06
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-5.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: f128 = 1.0e+_1;
+    _ = bad;
+}
+
+// invalid underscore placement in float literal - 5
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:26: note: invalid byte: '_'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-6.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-6.zig
new file mode 100644
index 0000000000..64a439538a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-6.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: f128 = 1.0e-_1;
+    _ = bad;
+}
+
+// invalid underscore placement in float literal - 6
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:26: note: invalid byte: '_'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-7.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-7.zig
new file mode 100644
index 0000000000..311b27339a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-7.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: f128 = 1.0e-1_;
+    _ = bad;
+}
+
+// invalid underscore placement in float literal - 7
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:28: note: invalid byte: ';'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-9.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-9.zig
new file mode 100644
index 0000000000..ecd1149f22
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-9.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: f128 = 1__0.0e-1;
+    _ = bad;
+}
+
+// invalid underscore placement in float literal - 9
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:23: note: invalid byte: '_'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-1.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-1.zig
new file mode 100644
index 0000000000..47da090745
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-1.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: u128 = 0010_;
+    _ = bad;
+}
+
+// invalid underscore placement in int literal - 1
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:26: note: invalid byte: ';'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-2.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-2.zig
new file mode 100644
index 0000000000..bb230daa9e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-2.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: u128 = 0b0010_;
+    _ = bad;
+}
+
+// invalid underscore placement in int literal - 2
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:28: note: invalid byte: ';'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-3.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-3.zig
new file mode 100644
index 0000000000..7808b6ee4d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-3.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: u128 = 0o0010_;
+    _ = bad;
+}
+
+// invalid underscore placement in int literal - 3
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:28: note: invalid byte: ';'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-4.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-4.zig
new file mode 100644
index 0000000000..51ddb3d061
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-4.zig
@@ -0,0 +1,9 @@
+fn main() void {
+    var bad: u128 = 0x0010_;
+    _ = bad;
+}
+
+// invalid underscore placement in int literal - 4
+//
+// tmp.zig:2:21: error: expected expression, found 'invalid bytes'
+// tmp.zig:2:28: note: invalid byte: ';'
diff --git a/test/compile_errors/stage1/obj/invalid_union_field_access_in_comptime.zig b/test/compile_errors/stage1/obj/invalid_union_field_access_in_comptime.zig
new file mode 100644
index 0000000000..d570dca0b9
--- /dev/null
+++ b/test/compile_errors/stage1/obj/invalid_union_field_access_in_comptime.zig
@@ -0,0 +1,13 @@
+const Foo = union {
+    Bar: u8,
+    Baz: void,
+};
+comptime {
+    var foo = Foo {.Baz = {}};
+    const bar_val = foo.Bar;
+    _ = bar_val;
+}
+
+// invalid union field access in comptime
+//
+// tmp.zig:7:24: error: accessing union field 'Bar' while field 'Baz' is set
diff --git a/test/compile_errors/stage1/obj/issue_2032_compile_diagnostic_string_for_top_level_decl_type.zig b/test/compile_errors/stage1/obj/issue_2032_compile_diagnostic_string_for_top_level_decl_type.zig
new file mode 100644
index 0000000000..9e353a4d38
--- /dev/null
+++ b/test/compile_errors/stage1/obj/issue_2032_compile_diagnostic_string_for_top_level_decl_type.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    var foo: u32 = @This(){};
+    _ = foo;
+}
+
+// compile diagnostic string for top level decl type (issue 2032)
+//
+// tmp.zig:2:27: error: type 'u32' does not support array initialization
diff --git a/test/compile_errors/stage1/obj/issue_2687_coerce_from_undefined_array_pointer_to_slice.zig b/test/compile_errors/stage1/obj/issue_2687_coerce_from_undefined_array_pointer_to_slice.zig
new file mode 100644
index 0000000000..7c125b85ce
--- /dev/null
+++ b/test/compile_errors/stage1/obj/issue_2687_coerce_from_undefined_array_pointer_to_slice.zig
@@ -0,0 +1,25 @@
+export fn foo1() void {
+    const a: *[1]u8 = undefined;
+    var b: []u8 = a;
+    _ = b;
+}
+export fn foo2() void {
+    comptime {
+        var a: *[1]u8 = undefined;
+        var b: []u8 = a;
+        _ = b;
+    }
+}
+export fn foo3() void {
+    comptime {
+        const a: *[1]u8 = undefined;
+        var b: []u8 = a;
+        _ = b;
+    }
+}
+
+// issue #2687: coerce from undefined array pointer to slice
+//
+// tmp.zig:3:19: error: use of undefined value here causes undefined behavior
+// tmp.zig:9:23: error: use of undefined value here causes undefined behavior
+// tmp.zig:16:23: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/issue_3818_bitcast_from_parray-slice_to_u16.zig b/test/compile_errors/stage1/obj/issue_3818_bitcast_from_parray-slice_to_u16.zig
new file mode 100644
index 0000000000..1c9d9cd1b1
--- /dev/null
+++ b/test/compile_errors/stage1/obj/issue_3818_bitcast_from_parray-slice_to_u16.zig
@@ -0,0 +1,15 @@
+export fn foo1() void {
+    var bytes = [_]u8{1, 2};
+    const word: u16 = @bitCast(u16, bytes[0..]);
+    _ = word;
+}
+export fn foo2() void {
+    var bytes: []const u8 = &[_]u8{1, 2};
+    const word: u16 = @bitCast(u16, bytes);
+    _ = word;
+}
+
+// issue #3818: bitcast from parray/slice to u16
+//
+// tmp.zig:3:42: error: unable to @bitCast from pointer type '*[2]u8'
+// tmp.zig:8:32: error: destination type 'u16' has size 2 but source type '[]const u8' has size 16
diff --git a/test/compile_errors/stage1/obj/issue_4207_coerce_from_non-terminated-slice_to_terminated-pointer.zig b/test/compile_errors/stage1/obj/issue_4207_coerce_from_non-terminated-slice_to_terminated-pointer.zig
new file mode 100644
index 0000000000..bfb0595cce
--- /dev/null
+++ b/test/compile_errors/stage1/obj/issue_4207_coerce_from_non-terminated-slice_to_terminated-pointer.zig
@@ -0,0 +1,9 @@
+export fn foo() [*:0]const u8 {
+    var buffer: [64]u8 = undefined;
+    return buffer[0..];
+}
+
+// issue #4207: coerce from non-terminated-slice to terminated-pointer
+//
+// :3:18: error: expected type '[*:0]const u8', found '*[64]u8'
+// :3:18: note: destination pointer requires a terminating '0' sentinel
diff --git a/test/compile_errors/stage1/obj/issue_5221_invalid_struct_init_type_referenced_by_typeInfo_and_passed_into_function.zig b/test/compile_errors/stage1/obj/issue_5221_invalid_struct_init_type_referenced_by_typeInfo_and_passed_into_function.zig
new file mode 100644
index 0000000000..aa839bc72c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/issue_5221_invalid_struct_init_type_referenced_by_typeInfo_and_passed_into_function.zig
@@ -0,0 +1,14 @@
+fn ignore(comptime param: anytype) void {_ = param;}
+
+export fn foo() void {
+    const MyStruct = struct {
+        wrong_type: []u8 = "foo",
+    };
+
+    comptime ignore(@typeInfo(MyStruct).Struct.fields[0]);
+}
+
+// issue #5221: invalid struct init type referenced by @typeInfo and passed into function
+//
+// :5:28: error: cannot cast pointer to array literal to slice type '[]u8'
+// :5:28: note: cast discards const qualifier
diff --git a/test/compile_errors/stage1/obj/issue_5618_coercion_of_optional_anyopaque_to_anyopaque_must_fail.zig b/test/compile_errors/stage1/obj/issue_5618_coercion_of_optional_anyopaque_to_anyopaque_must_fail.zig
new file mode 100644
index 0000000000..daa8a91f40
--- /dev/null
+++ b/test/compile_errors/stage1/obj/issue_5618_coercion_of_optional_anyopaque_to_anyopaque_must_fail.zig
@@ -0,0 +1,9 @@
+export fn foo() void {
+    var u: ?*anyopaque = null;
+    var v: *anyopaque = undefined;
+    v = u;
+}
+
+// Issue #5618: coercion of ?*anyopaque to *anyopaque must fail.
+//
+// tmp.zig:4:9: error: cannot convert optional to payload type. consider using `.?`, `orelse`, or `if`. expected type '*anyopaque', found '?*anyopaque'
diff --git a/test/compile_errors/stage1/obj/issue_7810-comptime_slice-len_increment_beyond_bounds.zig b/test/compile_errors/stage1/obj/issue_7810-comptime_slice-len_increment_beyond_bounds.zig
new file mode 100644
index 0000000000..533ac928b4
--- /dev/null
+++ b/test/compile_errors/stage1/obj/issue_7810-comptime_slice-len_increment_beyond_bounds.zig
@@ -0,0 +1,12 @@
+export fn foo_slice_len_increment_beyond_bounds() void {
+    comptime {
+        var buf_storage: [8]u8 = undefined;
+        var buf: []const u8 = buf_storage[0..];
+        buf.len += 1;
+        buf[8] = 42;
+    }
+}
+
+// comptime slice-len increment beyond bounds
+//
+// :6:12: error: out of bounds slice
diff --git a/test/compile_errors/stage1/obj/issue_9346_return_outside_of_function_scope.zig b/test/compile_errors/stage1/obj/issue_9346_return_outside_of_function_scope.zig
new file mode 100644
index 0000000000..6be92e2ee8
--- /dev/null
+++ b/test/compile_errors/stage1/obj/issue_9346_return_outside_of_function_scope.zig
@@ -0,0 +1,5 @@
+pub const empty = return 1;
+
+// issue #9346: return outside of function scope
+//
+// tmp.zig:1:19: error: 'return' outside function scope
diff --git a/test/compile_errors/stage1/obj/labeled_break_not_found.zig b/test/compile_errors/stage1/obj/labeled_break_not_found.zig
new file mode 100644
index 0000000000..0f4632d74d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/labeled_break_not_found.zig
@@ -0,0 +1,11 @@
+export fn entry() void {
+    blah: while (true) {
+        while (true) {
+            break :outer;
+        }
+    }
+}
+
+// labeled break not found
+//
+// tmp.zig:4:20: error: label not found: 'outer'
diff --git a/test/compile_errors/stage1/obj/labeled_continue_not_found.zig b/test/compile_errors/stage1/obj/labeled_continue_not_found.zig
new file mode 100644
index 0000000000..8f95a0fce1
--- /dev/null
+++ b/test/compile_errors/stage1/obj/labeled_continue_not_found.zig
@@ -0,0 +1,12 @@
+export fn entry() void {
+    var i: usize = 0;
+    blah: while (i < 10) : (i += 1) {
+        while (true) {
+            continue :outer;
+        }
+    }
+}
+
+// labeled continue not found
+//
+// tmp.zig:5:23: error: label not found: 'outer'
diff --git a/test/compile_errors/stage1/obj/lazy_pointer_with_undefined_element_type.zig b/test/compile_errors/stage1/obj/lazy_pointer_with_undefined_element_type.zig
new file mode 100644
index 0000000000..47b271a05e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/lazy_pointer_with_undefined_element_type.zig
@@ -0,0 +1,10 @@
+export fn foo() void {
+    comptime var T: type = undefined;
+    const S = struct { x: *T };
+    const I = @typeInfo(S);
+    _ = I;
+}
+
+// lazy pointer with undefined element type
+//
+// :3:28: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/load_too_many_bytes_from_comptime_reinterpreted_pointer.zig b/test/compile_errors/stage1/obj/load_too_many_bytes_from_comptime_reinterpreted_pointer.zig
new file mode 100644
index 0000000000..2c5e1c7327
--- /dev/null
+++ b/test/compile_errors/stage1/obj/load_too_many_bytes_from_comptime_reinterpreted_pointer.zig
@@ -0,0 +1,11 @@
+export fn entry() void {
+    const float: f32 = 5.99999999999994648725e-01;
+    const float_ptr = &float;
+    const int_ptr = @ptrCast(*const i64, float_ptr);
+    const int_val = int_ptr.*;
+    _ = int_val;
+}
+
+// load too many bytes from comptime reinterpreted pointer
+//
+// tmp.zig:5:28: error: attempt to read 8 bytes from pointer to f32 which is 4 bytes
diff --git a/test/compile_errors/stage1/obj/load_vector_pointer_with_unknown_runtime_index.zig b/test/compile_errors/stage1/obj/load_vector_pointer_with_unknown_runtime_index.zig
new file mode 100644
index 0000000000..fe28fa9102
--- /dev/null
+++ b/test/compile_errors/stage1/obj/load_vector_pointer_with_unknown_runtime_index.zig
@@ -0,0 +1,15 @@
+export fn entry() void {
+    var v: @import("std").meta.Vector(4, i32) = [_]i32{ 1, 5, 3, undefined };
+
+    var i: u32 = 0;
+    var x = loadv(&v[i]);
+    _ = x;
+}
+
+fn loadv(ptr: anytype) i32 {
+    return ptr.*;
+}
+
+// load vector pointer with unknown runtime index
+//
+// tmp.zig:10:12: error: unable to determine vector element index of type '*align(16:0:4:?) i32
diff --git a/test/compile_errors/stage1/obj/local_shadows_global_that_occurs_later.zig b/test/compile_errors/stage1/obj/local_shadows_global_that_occurs_later.zig
new file mode 100644
index 0000000000..2265a34f18
--- /dev/null
+++ b/test/compile_errors/stage1/obj/local_shadows_global_that_occurs_later.zig
@@ -0,0 +1,10 @@
+pub fn main() void {
+    var foo = true;
+    _ = foo;
+}
+fn foo() void {}
+
+// local shadows global that occurs later
+//
+// tmp.zig:2:9: error: local shadows declaration of 'foo'
+// tmp.zig:5:1: note: declared here
diff --git a/test/compile_errors/stage1/obj/local_variable_redeclaration.zig b/test/compile_errors/stage1/obj/local_variable_redeclaration.zig
new file mode 100644
index 0000000000..2367963edb
--- /dev/null
+++ b/test/compile_errors/stage1/obj/local_variable_redeclaration.zig
@@ -0,0 +1,9 @@
+export fn f() void {
+    const a : i32 = 0;
+    var a = 0;
+}
+
+// local variable redeclaration
+//
+// tmp.zig:3:9: error: redeclaration of local constant 'a'
+// tmp.zig:2:11: note: previous declaration here
diff --git a/test/compile_errors/stage1/obj/local_variable_redeclares_parameter.zig b/test/compile_errors/stage1/obj/local_variable_redeclares_parameter.zig
new file mode 100644
index 0000000000..e624e14e31
--- /dev/null
+++ b/test/compile_errors/stage1/obj/local_variable_redeclares_parameter.zig
@@ -0,0 +1,9 @@
+fn f(a : i32) void {
+    const a = 0;
+}
+export fn entry() void { f(1); }
+
+// local variable redeclares parameter
+//
+// tmp.zig:2:11: error: redeclaration of function parameter 'a'
+// tmp.zig:1:6: note: previous declaration here
diff --git a/test/compile_errors/stage1/obj/local_variable_shadowing_global.zig b/test/compile_errors/stage1/obj/local_variable_shadowing_global.zig
new file mode 100644
index 0000000000..c824cb3df7
--- /dev/null
+++ b/test/compile_errors/stage1/obj/local_variable_shadowing_global.zig
@@ -0,0 +1,12 @@
+const Foo = struct {};
+const Bar = struct {};
+
+export fn entry() void {
+    var Bar : i32 = undefined;
+    _ = Bar;
+}
+
+// local variable shadowing global
+//
+// tmp.zig:5:9: error: local shadows declaration of 'Bar'
+// tmp.zig:2:1: note: declared here
diff --git a/test/compile_errors/stage1/obj/locally_shadowing_a_primitive_type.zig b/test/compile_errors/stage1/obj/locally_shadowing_a_primitive_type.zig
new file mode 100644
index 0000000000..457cea418c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/locally_shadowing_a_primitive_type.zig
@@ -0,0 +1,10 @@
+export fn foo() void {
+    const u8 = u16;
+    const a: u8 = 300;
+    _ = a;
+}
+
+// locally shadowing a primitive type
+//
+// tmp.zig:2:11: error: name shadows primitive 'u8'
+// tmp.zig:2:11: note: consider using @"u8" to disambiguate
diff --git a/test/compile_errors/stage1/obj/main_function_with_bogus_args_type.zig b/test/compile_errors/stage1/obj/main_function_with_bogus_args_type.zig
new file mode 100644
index 0000000000..3954c4b846
--- /dev/null
+++ b/test/compile_errors/stage1/obj/main_function_with_bogus_args_type.zig
@@ -0,0 +1,5 @@
+pub fn main(args: [][]bogus) !void {_ = args;}
+
+// main function with bogus args type
+//
+// tmp.zig:1:23: error: use of undeclared identifier 'bogus'
diff --git a/test/compile_errors/stage1/obj/method_call_with_first_arg_type_primitive.zig b/test/compile_errors/stage1/obj/method_call_with_first_arg_type_primitive.zig
new file mode 100644
index 0000000000..9763e84fba
--- /dev/null
+++ b/test/compile_errors/stage1/obj/method_call_with_first_arg_type_primitive.zig
@@ -0,0 +1,19 @@
+const Foo = struct {
+    x: i32,
+
+    fn init(x: i32) Foo {
+        return Foo {
+            .x = x,
+        };
+    }
+};
+
+export fn f() void {
+    const derp = Foo.init(3);
+
+    derp.init();
+}
+
+// method call with first arg type primitive
+//
+// tmp.zig:14:5: error: expected type 'i32', found 'Foo'
diff --git a/test/compile_errors/stage1/obj/method_call_with_first_arg_type_wrong_container.zig b/test/compile_errors/stage1/obj/method_call_with_first_arg_type_wrong_container.zig
new file mode 100644
index 0000000000..ccbc7e32e3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/method_call_with_first_arg_type_wrong_container.zig
@@ -0,0 +1,28 @@
+pub const List = struct {
+    len: usize,
+    allocator: *Allocator,
+
+    pub fn init(allocator: *Allocator) List {
+        return List {
+            .len = 0,
+            .allocator = allocator,
+        };
+    }
+};
+
+pub var global_allocator = Allocator {
+    .field = 1234,
+};
+
+pub const Allocator = struct {
+    field: i32,
+};
+
+export fn foo() void {
+    var x = List.init(&global_allocator);
+    x.init();
+}
+
+// method call with first arg type wrong container
+//
+// tmp.zig:23:5: error: expected type '*Allocator', found '*List'
diff --git a/test/compile_errors/stage1/obj/missing_boolean_switch_value.zig b/test/compile_errors/stage1/obj/missing_boolean_switch_value.zig
new file mode 100644
index 0000000000..63a12c4e6f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/missing_boolean_switch_value.zig
@@ -0,0 +1,17 @@
+comptime {
+    const x = switch (true) {
+        true => false,
+    };
+    _ = x;
+}
+comptime {
+    const x = switch (true) {
+        false => true,
+    };
+    _ = x;
+}
+
+// missing boolean switch value
+//
+// tmp.zig:2:15: error: switch must handle all possibilities
+// tmp.zig:8:15: error: switch must handle all possibilities
diff --git a/test/compile_errors/stage1/obj/missing_const_in_slice_with_nested_array_type.zig b/test/compile_errors/stage1/obj/missing_const_in_slice_with_nested_array_type.zig
new file mode 100644
index 0000000000..4f552284d7
--- /dev/null
+++ b/test/compile_errors/stage1/obj/missing_const_in_slice_with_nested_array_type.zig
@@ -0,0 +1,16 @@
+const Geo3DTex2D = struct { vertices: [][2]f32 };
+pub fn getGeo3DTex2D() Geo3DTex2D {
+    return Geo3DTex2D{
+        .vertices = [_][2]f32{
+            [_]f32{ -0.5, -0.5},
+        },
+    };
+}
+export fn entry() void {
+    var geo_data = getGeo3DTex2D();
+    _ = geo_data;
+}
+
+// missing const in slice with nested array type
+//
+// tmp.zig:4:30: error: array literal requires address-of operator (&) to coerce to slice type '[][2]f32'
diff --git a/test/compile_errors/stage1/obj/missing_else_clause.zig b/test/compile_errors/stage1/obj/missing_else_clause.zig
new file mode 100644
index 0000000000..28adfd21e8
--- /dev/null
+++ b/test/compile_errors/stage1/obj/missing_else_clause.zig
@@ -0,0 +1,14 @@
+fn f(b: bool) void {
+    const x : i32 = if (b) h: { break :h 1; };
+    _ = x;
+}
+fn g(b: bool) void {
+    const y = if (b) h: { break :h @as(i32, 1); };
+    _ = y;
+}
+export fn entry() void { f(true); g(true); }
+
+// missing else clause
+//
+// tmp.zig:2:21: error: expected type 'i32', found 'void'
+// tmp.zig:6:15: error: incompatible types: 'i32' and 'void'
diff --git a/test/compile_errors/stage1/obj/missing_field_in_struct_value_expression.zig b/test/compile_errors/stage1/obj/missing_field_in_struct_value_expression.zig
new file mode 100644
index 0000000000..bea4021a5a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/missing_field_in_struct_value_expression.zig
@@ -0,0 +1,18 @@
+const A = struct {
+    x : i32,
+    y : i32,
+    z : i32,
+};
+export fn f() void {
+    // we want the error on the '{' not the 'A' because
+    // the A could be a complicated expression
+    const a = A {
+        .z = 4,
+        .y = 2,
+    };
+    _ = a;
+}
+
+// missing field in struct value expression
+//
+// tmp.zig:9:17: error: missing field: 'x'
diff --git a/test/compile_errors/stage1/obj/missing_function_call_param.zig b/test/compile_errors/stage1/obj/missing_function_call_param.zig
new file mode 100644
index 0000000000..45a7259814
--- /dev/null
+++ b/test/compile_errors/stage1/obj/missing_function_call_param.zig
@@ -0,0 +1,29 @@
+const Foo = struct {
+    a: i32,
+    b: i32,
+
+    fn member_a(foo: *const Foo) i32 {
+        return foo.a;
+    }
+    fn member_b(foo: *const Foo) i32 {
+        return foo.b;
+    }
+};
+
+const member_fn_type = @TypeOf(Foo.member_a);
+const members = [_]member_fn_type {
+    Foo.member_a,
+    Foo.member_b,
+};
+
+fn f(foo: *const Foo, index: usize) void {
+    const result = members[index]();
+    _ = foo;
+    _ = result;
+}
+
+export fn entry() usize { return @sizeOf(@TypeOf(f)); }
+
+// missing function call param
+//
+// tmp.zig:20:34: error: expected 1 argument(s), found 0
diff --git a/test/compile_errors/stage1/obj/missing_function_name.zig b/test/compile_errors/stage1/obj/missing_function_name.zig
new file mode 100644
index 0000000000..194f5eb6a8
--- /dev/null
+++ b/test/compile_errors/stage1/obj/missing_function_name.zig
@@ -0,0 +1,6 @@
+fn () void {}
+export fn entry() usize { return @sizeOf(@TypeOf(f)); }
+
+// missing function name
+//
+// tmp.zig:1:1: error: missing function name
diff --git a/test/compile_errors/stage1/obj/missing_param_name.zig b/test/compile_errors/stage1/obj/missing_param_name.zig
new file mode 100644
index 0000000000..1c379dd245
--- /dev/null
+++ b/test/compile_errors/stage1/obj/missing_param_name.zig
@@ -0,0 +1,6 @@
+fn f(i32) void {}
+export fn entry() usize { return @sizeOf(@TypeOf(f)); }
+
+// missing param name
+//
+// tmp.zig:1:6: error: missing parameter name
diff --git a/test/compile_errors/stage1/obj/missing_parameter_name_of_generic_function.zig b/test/compile_errors/stage1/obj/missing_parameter_name_of_generic_function.zig
new file mode 100644
index 0000000000..3a3ccd28a8
--- /dev/null
+++ b/test/compile_errors/stage1/obj/missing_parameter_name_of_generic_function.zig
@@ -0,0 +1,9 @@
+fn dump(anytype) void {}
+export fn entry() void {
+    var a: u8 = 9;
+    dump(a);
+}
+
+// missing parameter name of generic function
+//
+// tmp.zig:1:9: error: missing parameter name
diff --git a/test/compile_errors/stage1/obj/missing_result_type_for_phi_node.zig b/test/compile_errors/stage1/obj/missing_result_type_for_phi_node.zig
new file mode 100644
index 0000000000..3ef99e0859
--- /dev/null
+++ b/test/compile_errors/stage1/obj/missing_result_type_for_phi_node.zig
@@ -0,0 +1,10 @@
+fn foo() !void {
+    return anyerror.Foo;
+}
+export fn entry() void {
+    foo() catch 0;
+}
+
+// missing result type for phi node
+//
+// tmp.zig:5:17: error: integer value 0 cannot be coerced to type 'void'
diff --git a/test/compile_errors/stage1/obj/misspelled_type_with_pointer_only_reference.zig b/test/compile_errors/stage1/obj/misspelled_type_with_pointer_only_reference.zig
new file mode 100644
index 0000000000..6b3f647c02
--- /dev/null
+++ b/test/compile_errors/stage1/obj/misspelled_type_with_pointer_only_reference.zig
@@ -0,0 +1,35 @@
+const JasonHM = u8;
+const JasonList = *JsonNode;
+
+const JsonOA = union(enum) {
+    JSONArray: JsonList,
+    JSONObject: JasonHM,
+};
+
+const JsonType = union(enum) {
+    JSONNull: void,
+    JSONInteger: isize,
+    JSONDouble: f64,
+    JSONBool: bool,
+    JSONString: []u8,
+    JSONArray: void,
+    JSONObject: void,
+};
+
+pub const JsonNode = struct {
+    kind: JsonType,
+    jobject: ?JsonOA,
+};
+
+fn foo() void {
+    var jll: JasonList = undefined;
+    jll.init(1234);
+    var jd = JsonNode {.kind = JsonType.JSONArray , .jobject = JsonOA.JSONArray {jll} };
+    _ = jd;
+}
+
+export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
+
+// misspelled type with pointer only reference
+//
+// tmp.zig:5:16: error: use of undeclared identifier 'JsonList'
diff --git a/test/compile_errors/stage1/obj/mod_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/mod_assign_on_undefined_value.zig
new file mode 100644
index 0000000000..3165970d44
--- /dev/null
+++ b/test/compile_errors/stage1/obj/mod_assign_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    a %= a;
+}
+
+// mod assign on undefined value
+//
+// tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/mod_on_undefined_value.zig b/test/compile_errors/stage1/obj/mod_on_undefined_value.zig
new file mode 100644
index 0000000000..3b33f6ed82
--- /dev/null
+++ b/test/compile_errors/stage1/obj/mod_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    _ = a % a;
+}
+
+// mod on undefined value
+//
+// tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/mul_overflow_in_function_evaluation.zig b/test/compile_errors/stage1/obj/mul_overflow_in_function_evaluation.zig
new file mode 100644
index 0000000000..ea8eea5ab5
--- /dev/null
+++ b/test/compile_errors/stage1/obj/mul_overflow_in_function_evaluation.zig
@@ -0,0 +1,10 @@
+const y = mul(300, 6000);
+fn mul(a: u16, b: u16) u16 {
+    return a * b;
+}
+
+export fn entry() usize { return @sizeOf(@TypeOf(y)); }
+
+// mul overflow in function evaluation
+//
+// tmp.zig:3:14: error: operation caused overflow
diff --git a/test/compile_errors/stage1/obj/mult_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/mult_assign_on_undefined_value.zig
new file mode 100644
index 0000000000..4617c5f62b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/mult_assign_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    a *= a;
+}
+
+// mult assign on undefined value
+//
+// tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/mult_on_undefined_value.zig b/test/compile_errors/stage1/obj/mult_on_undefined_value.zig
new file mode 100644
index 0000000000..836b59e19d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/mult_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    _ = a * a;
+}
+
+// mult on undefined value
+//
+// tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/mult_wrap_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/mult_wrap_assign_on_undefined_value.zig
new file mode 100644
index 0000000000..38bd38bf79
--- /dev/null
+++ b/test/compile_errors/stage1/obj/mult_wrap_assign_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    a *%= a;
+}
+
+// mult wrap assign on undefined value
+//
+// tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/mult_wrap_on_undefined_value.zig b/test/compile_errors/stage1/obj/mult_wrap_on_undefined_value.zig
new file mode 100644
index 0000000000..0c0ca46540
--- /dev/null
+++ b/test/compile_errors/stage1/obj/mult_wrap_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    _ = a *% a;
+}
+
+// mult wrap on undefined value
+//
+// tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/multiple_function_definitions.zig b/test/compile_errors/stage1/obj/multiple_function_definitions.zig
new file mode 100644
index 0000000000..c4efefce8d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/multiple_function_definitions.zig
@@ -0,0 +1,8 @@
+fn a() void {}
+fn a() void {}
+export fn entry() void { a(); }
+
+// multiple function definitions
+//
+// tmp.zig:2:1: error: redeclaration of 'a'
+// tmp.zig:1:1: note: other declaration here
diff --git a/test/compile_errors/stage1/obj/negate_on_undefined_value.zig b/test/compile_errors/stage1/obj/negate_on_undefined_value.zig
new file mode 100644
index 0000000000..7e7e392104
--- /dev/null
+++ b/test/compile_errors/stage1/obj/negate_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    _ = -a;
+}
+
+// negate on undefined value
+//
+// tmp.zig:3:10: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/negate_wrap_on_undefined_value.zig b/test/compile_errors/stage1/obj/negate_wrap_on_undefined_value.zig
new file mode 100644
index 0000000000..f49c6eac34
--- /dev/null
+++ b/test/compile_errors/stage1/obj/negate_wrap_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    _ = -%a;
+}
+
+// negate wrap on undefined value
+//
+// tmp.zig:3:11: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/negation_overflow_in_function_evaluation.zig b/test/compile_errors/stage1/obj/negation_overflow_in_function_evaluation.zig
new file mode 100644
index 0000000000..ca69b6fb5d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/negation_overflow_in_function_evaluation.zig
@@ -0,0 +1,10 @@
+const y = neg(-128);
+fn neg(x: i8) i8 {
+    return -x;
+}
+
+export fn entry() usize { return @sizeOf(@TypeOf(y)); }
+
+// negation overflow in function evaluation
+//
+// tmp.zig:3:12: error: negation caused overflow
diff --git a/test/compile_errors/stage1/obj/nested_error_set_mismatch.zig b/test/compile_errors/stage1/obj/nested_error_set_mismatch.zig
new file mode 100644
index 0000000000..6c677049df
--- /dev/null
+++ b/test/compile_errors/stage1/obj/nested_error_set_mismatch.zig
@@ -0,0 +1,18 @@
+const NextError = error{NextError};
+const OtherError = error{OutOfMemory};
+
+export fn entry() void {
+    const a: ?NextError!i32 = foo();
+    _ = a;
+}
+
+fn foo() ?OtherError!i32 {
+    return null;
+}
+
+// nested error set mismatch
+//
+// tmp.zig:5:34: error: expected type '?NextError!i32', found '?OtherError!i32'
+// tmp.zig:5:34: note: optional type child 'OtherError!i32' cannot cast into optional type child 'NextError!i32'
+// tmp.zig:5:34: note: error set 'OtherError' cannot cast into error set 'NextError'
+// tmp.zig:2:26: note: 'error.OutOfMemory' not a member of destination error set
diff --git a/test/compile_errors/stage1/obj/no_else_prong_on_switch_on_global_error_set.zig b/test/compile_errors/stage1/obj/no_else_prong_on_switch_on_global_error_set.zig
new file mode 100644
index 0000000000..7de3f189f0
--- /dev/null
+++ b/test/compile_errors/stage1/obj/no_else_prong_on_switch_on_global_error_set.zig
@@ -0,0 +1,12 @@
+export fn entry() void {
+    foo(error.A);
+}
+fn foo(a: anyerror) void {
+    switch (a) {
+        error.A => {},
+    }
+}
+
+// no else prong on switch on global error set
+//
+// tmp.zig:5:5: error: else prong required when switching on type 'anyerror'
diff --git a/test/compile_errors/stage1/obj/noalias_on_non_pointer_param.zig b/test/compile_errors/stage1/obj/noalias_on_non_pointer_param.zig
new file mode 100644
index 0000000000..3419dc8c99
--- /dev/null
+++ b/test/compile_errors/stage1/obj/noalias_on_non_pointer_param.zig
@@ -0,0 +1,6 @@
+fn f(noalias x: i32) void { _ = x; }
+export fn entry() void { f(1234); }
+
+// noalias on non pointer param
+//
+// tmp.zig:1:6: error: noalias on non-pointer parameter
diff --git a/test/compile_errors/stage1/obj/non-async_function_pointer_eventually_is_inferred_to_become_async.zig b/test/compile_errors/stage1/obj/non-async_function_pointer_eventually_is_inferred_to_become_async.zig
new file mode 100644
index 0000000000..93391daaef
--- /dev/null
+++ b/test/compile_errors/stage1/obj/non-async_function_pointer_eventually_is_inferred_to_become_async.zig
@@ -0,0 +1,13 @@
+export fn a() void {
+    var non_async_fn: fn () void = undefined;
+    non_async_fn = func;
+}
+fn func() void {
+    suspend {}
+}
+
+// non-async function pointer eventually is inferred to become async
+//
+// tmp.zig:5:1: error: 'func' cannot be async
+// tmp.zig:3:20: note: required to be non-async here
+// tmp.zig:6:5: note: suspends here
diff --git a/test/compile_errors/stage1/obj/non-const_expression_function_call_with_struct_return_value_outside_function.zig b/test/compile_errors/stage1/obj/non-const_expression_function_call_with_struct_return_value_outside_function.zig
new file mode 100644
index 0000000000..d6a463e71f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/non-const_expression_function_call_with_struct_return_value_outside_function.zig
@@ -0,0 +1,15 @@
+const Foo = struct {
+    x: i32,
+};
+const a = get_it();
+fn get_it() Foo {
+    global_side_effect = true;
+    return Foo {.x = 13};
+}
+var global_side_effect = false;
+
+export fn entry() usize { return @sizeOf(@TypeOf(a)); }
+
+// non-const expression function call with struct return value outside function
+//
+// tmp.zig:6:26: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/non-const_expression_in_struct_literal_outside_function.zig b/test/compile_errors/stage1/obj/non-const_expression_in_struct_literal_outside_function.zig
new file mode 100644
index 0000000000..ef7b1309c3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/non-const_expression_in_struct_literal_outside_function.zig
@@ -0,0 +1,11 @@
+const Foo = struct {
+    x: i32,
+};
+const a = Foo {.x = get_it()};
+extern fn get_it() i32;
+
+export fn entry() usize { return @sizeOf(@TypeOf(a)); }
+
+// non-const expression in struct literal outside function
+//
+// tmp.zig:4:21: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/non-const_switch_number_literal.zig b/test/compile_errors/stage1/obj/non-const_switch_number_literal.zig
new file mode 100644
index 0000000000..aecaa7dcb6
--- /dev/null
+++ b/test/compile_errors/stage1/obj/non-const_switch_number_literal.zig
@@ -0,0 +1,15 @@
+export fn foo() void {
+    const x = switch (bar()) {
+        1, 2 => 1,
+        3, 4 => 2,
+        else => 3,
+    };
+    _ = x;
+}
+fn bar() i32 {
+    return 2;
+}
+
+// non-const switch number literal
+//
+// tmp.zig:5:17: error: cannot store runtime value in type 'comptime_int'
diff --git a/test/compile_errors/stage1/obj/non-const_variables_of_things_that_require_const_variables.zig b/test/compile_errors/stage1/obj/non-const_variables_of_things_that_require_const_variables.zig
new file mode 100644
index 0000000000..0598e04e4b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/non-const_variables_of_things_that_require_const_variables.zig
@@ -0,0 +1,49 @@
+export fn entry1() void {
+   var m2 = &2;
+   _ = m2;
+}
+export fn entry2() void {
+   var a = undefined;
+   _ = a;
+}
+export fn entry3() void {
+   var b = 1;
+   _ = b;
+}
+export fn entry4() void {
+   var c = 1.0;
+   _ = c;
+}
+export fn entry5() void {
+   var d = null;
+   _ = d;
+}
+export fn entry6(opaque_: *Opaque) void {
+   var e = opaque_.*;
+   _ = e;
+}
+export fn entry7() void {
+   var f = i32;
+   _ = f;
+}
+export fn entry8() void {
+   var h = (Foo {}).bar;
+   _ = h;
+}
+const Opaque = opaque {};
+const Foo = struct {
+    fn bar(self: *const Foo) void {_ = self;}
+};
+
+// non-const variables of things that require const variables
+//
+// tmp.zig:2:4: error: variable of type '*const comptime_int' must be const or comptime
+// tmp.zig:6:4: error: variable of type '@Type(.Undefined)' must be const or comptime
+// tmp.zig:10:4: error: variable of type 'comptime_int' must be const or comptime
+// tmp.zig:10:4: note: to modify this variable at runtime, it must be given an explicit fixed-size number type
+// tmp.zig:14:4: error: variable of type 'comptime_float' must be const or comptime
+// tmp.zig:14:4: note: to modify this variable at runtime, it must be given an explicit fixed-size number type
+// tmp.zig:18:4: error: variable of type '@Type(.Null)' must be const or comptime
+// tmp.zig:22:4: error: variable of type 'Opaque' not allowed
+// tmp.zig:26:4: error: variable of type 'type' must be const or comptime
+// tmp.zig:30:4: error: variable of type '(bound fn(*const Foo) void)' must be const or comptime
diff --git a/test/compile_errors/stage1/obj/non-enum_tag_type_passed_to_union.zig b/test/compile_errors/stage1/obj/non-enum_tag_type_passed_to_union.zig
new file mode 100644
index 0000000000..3161f16b28
--- /dev/null
+++ b/test/compile_errors/stage1/obj/non-enum_tag_type_passed_to_union.zig
@@ -0,0 +1,11 @@
+const Foo = union(u32) {
+    A: i32,
+};
+export fn entry() void {
+    const x = @typeInfo(Foo).Union.tag_type.?;
+    _ = x;
+}
+
+// non-enum tag type passed to union
+//
+// tmp.zig:1:19: error: expected enum tag type, found 'u32'
diff --git a/test/compile_errors/stage1/obj/non-extern_function_with_var_args.zig b/test/compile_errors/stage1/obj/non-extern_function_with_var_args.zig
new file mode 100644
index 0000000000..02b99383c1
--- /dev/null
+++ b/test/compile_errors/stage1/obj/non-extern_function_with_var_args.zig
@@ -0,0 +1,8 @@
+fn foo(args: ...) void {}
+export fn entry() void {
+    foo();
+}
+
+// non-extern function with var args
+//
+// tmp.zig:1:14: error: expected type expression, found '...'
diff --git a/test/compile_errors/stage1/obj/non-inline_for_loop_on_a_type_that_requires_comptime.zig b/test/compile_errors/stage1/obj/non-inline_for_loop_on_a_type_that_requires_comptime.zig
new file mode 100644
index 0000000000..9190e7cea8
--- /dev/null
+++ b/test/compile_errors/stage1/obj/non-inline_for_loop_on_a_type_that_requires_comptime.zig
@@ -0,0 +1,12 @@
+const Foo = struct {
+    name: []const u8,
+    T: type,
+};
+export fn entry() void {
+    const xx: [2]Foo = undefined;
+    for (xx) |f| { _ = f;}
+}
+
+// non-inline for loop on a type that requires comptime
+//
+// tmp.zig:7:5: error: values of type 'Foo' must be comptime known, but index value is runtime known
diff --git a/test/compile_errors/stage1/obj/non-integer_tag_type_to_automatic_union_enum.zig b/test/compile_errors/stage1/obj/non-integer_tag_type_to_automatic_union_enum.zig
new file mode 100644
index 0000000000..a84ca36f6c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/non-integer_tag_type_to_automatic_union_enum.zig
@@ -0,0 +1,11 @@
+const Foo = union(enum(f32)) {
+    A: i32,
+};
+export fn entry() void {
+    const x = @typeInfo(Foo).Union.tag_type.?;
+    _ = x;
+}
+
+// non-integer tag type to automatic union enum
+//
+// tmp.zig:1:24: error: expected integer tag type, found 'f32'
diff --git a/test/compile_errors/stage1/obj/non-pure_function_returns_type.zig b/test/compile_errors/stage1/obj/non-pure_function_returns_type.zig
new file mode 100644
index 0000000000..0925207b9f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/non-pure_function_returns_type.zig
@@ -0,0 +1,22 @@
+var a: u32 = 0;
+pub fn List(comptime T: type) type {
+    a += 1;
+    return SmallList(T, 8);
+}
+
+pub fn SmallList(comptime T: type, comptime STATIC_SIZE: usize) type {
+    return struct {
+        items: []T,
+        length: usize,
+        prealloc_items: [STATIC_SIZE]T,
+    };
+}
+
+export fn function_with_return_type_type() void {
+    var list: List(i32) = undefined;
+    list.length = 10;
+}
+
+// non-pure function returns type
+//
+// tmp.zig:3:7: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/non_async_function_pointer_passed_to_asyncCall.zig b/test/compile_errors/stage1/obj/non_async_function_pointer_passed_to_asyncCall.zig
new file mode 100644
index 0000000000..73c4fd96ca
--- /dev/null
+++ b/test/compile_errors/stage1/obj/non_async_function_pointer_passed_to_asyncCall.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    var ptr = afunc;
+    var bytes: [100]u8 align(16) = undefined;
+    _ = @asyncCall(&bytes, {}, ptr, .{});
+}
+fn afunc() void { }
+
+// non async function pointer passed to @asyncCall
+//
+// tmp.zig:4:32: error: expected async function, found 'fn() void'
diff --git a/test/compile_errors/stage1/obj/non_compile_time_array_concatenation.zig b/test/compile_errors/stage1/obj/non_compile_time_array_concatenation.zig
new file mode 100644
index 0000000000..c119cc03f7
--- /dev/null
+++ b/test/compile_errors/stage1/obj/non_compile_time_array_concatenation.zig
@@ -0,0 +1,9 @@
+fn f() []u8 {
+    return s ++ "foo";
+}
+var s: [10]u8 = undefined;
+export fn entry() usize { return @sizeOf(@TypeOf(f)); }
+
+// non compile time array concatenation
+//
+// tmp.zig:2:12: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/non_constant_expression_in_array_size.zig b/test/compile_errors/stage1/obj/non_constant_expression_in_array_size.zig
new file mode 100644
index 0000000000..fe28921265
--- /dev/null
+++ b/test/compile_errors/stage1/obj/non_constant_expression_in_array_size.zig
@@ -0,0 +1,12 @@
+const Foo = struct {
+    y: [get()]u8,
+};
+var global_var: usize = 1;
+fn get() usize { return global_var; }
+
+export fn entry() usize { return @sizeOf(@TypeOf(Foo)); }
+
+// non constant expression in array size
+//
+// tmp.zig:5:25: error: cannot store runtime value in compile time variable
+// tmp.zig:2:12: note: called from here
diff --git a/test/compile_errors/stage1/obj/non_error_sets_used_in_merge_error_sets_operator.zig b/test/compile_errors/stage1/obj/non_error_sets_used_in_merge_error_sets_operator.zig
new file mode 100644
index 0000000000..c600bea8b0
--- /dev/null
+++ b/test/compile_errors/stage1/obj/non_error_sets_used_in_merge_error_sets_operator.zig
@@ -0,0 +1,15 @@
+export fn foo() void {
+    const Errors = u8 || u16;
+    _ = Errors;
+}
+export fn bar() void {
+    const Errors = error{} || u16;
+    _ = Errors;
+}
+
+// non error sets used in merge error sets operator
+//
+// tmp.zig:2:20: error: expected error set type, found type 'u8'
+// tmp.zig:2:23: note: `||` merges error sets; `or` performs boolean OR
+// tmp.zig:6:31: error: expected error set type, found type 'u16'
+// tmp.zig:6:28: note: `||` merges error sets; `or` performs boolean OR
diff --git a/test/compile_errors/stage1/obj/non_float_passed_to_floatToInt.zig b/test/compile_errors/stage1/obj/non_float_passed_to_floatToInt.zig
new file mode 100644
index 0000000000..cad658ba5a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/non_float_passed_to_floatToInt.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    const x = @floatToInt(i32, @as(i32, 54));
+    _ = x;
+}
+
+// non float passed to @floatToInt
+//
+// tmp.zig:2:32: error: expected float type, found 'i32'
diff --git a/test/compile_errors/stage1/obj/non_int_passed_to_intToFloat.zig b/test/compile_errors/stage1/obj/non_int_passed_to_intToFloat.zig
new file mode 100644
index 0000000000..8b985c2b0b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/non_int_passed_to_intToFloat.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    const x = @intToFloat(f32, 1.1);
+    _ = x;
+}
+
+// non int passed to @intToFloat
+//
+// tmp.zig:2:32: error: expected int type, found 'comptime_float'
diff --git a/test/compile_errors/stage1/obj/non_pointer_given_to_ptrToInt.zig b/test/compile_errors/stage1/obj/non_pointer_given_to_ptrToInt.zig
new file mode 100644
index 0000000000..1d4d3087da
--- /dev/null
+++ b/test/compile_errors/stage1/obj/non_pointer_given_to_ptrToInt.zig
@@ -0,0 +1,7 @@
+export fn entry(x: i32) usize {
+    return @ptrToInt(x);
+}
+
+// non pointer given to @ptrToInt
+//
+// tmp.zig:2:22: error: expected pointer, found 'i32'
diff --git a/test/compile_errors/stage1/obj/normal_string_with_newline.zig b/test/compile_errors/stage1/obj/normal_string_with_newline.zig
new file mode 100644
index 0000000000..dafc041744
--- /dev/null
+++ b/test/compile_errors/stage1/obj/normal_string_with_newline.zig
@@ -0,0 +1,7 @@
+const foo = "a
+b";
+
+// normal string with newline
+//
+// tmp.zig:1:13: error: expected expression, found 'invalid bytes'
+// tmp.zig:1:15: note: invalid byte: '\n'
diff --git a/test/compile_errors/stage1/obj/offsetOf-bad_field_name.zig b/test/compile_errors/stage1/obj/offsetOf-bad_field_name.zig
new file mode 100644
index 0000000000..3b301e2677
--- /dev/null
+++ b/test/compile_errors/stage1/obj/offsetOf-bad_field_name.zig
@@ -0,0 +1,10 @@
+const Foo = struct {
+    derp: i32,
+};
+export fn foo() usize {
+    return @offsetOf(Foo, "a",);
+}
+
+// @offsetOf - bad field name
+//
+// tmp.zig:5:27: error: struct 'Foo' has no field 'a'
diff --git a/test/compile_errors/stage1/obj/offsetOf-non_struct.zig b/test/compile_errors/stage1/obj/offsetOf-non_struct.zig
new file mode 100644
index 0000000000..173119407a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/offsetOf-non_struct.zig
@@ -0,0 +1,8 @@
+const Foo = i32;
+export fn foo() usize {
+    return @offsetOf(Foo, "a",);
+}
+
+// @offsetOf - non struct
+//
+// tmp.zig:3:22: error: expected struct type, found 'i32'
diff --git a/test/compile_errors/stage1/obj/only_equality_binary_operator_allowed_for_error_sets.zig b/test/compile_errors/stage1/obj/only_equality_binary_operator_allowed_for_error_sets.zig
new file mode 100644
index 0000000000..58512ef2a6
--- /dev/null
+++ b/test/compile_errors/stage1/obj/only_equality_binary_operator_allowed_for_error_sets.zig
@@ -0,0 +1,8 @@
+comptime {
+    const z = error.A > error.B;
+    _ = z;
+}
+
+// only equality binary operator allowed for error sets
+//
+// tmp.zig:2:23: error: operator not allowed for errors
diff --git a/test/compile_errors/stage1/obj/opaque_type_with_field.zig b/test/compile_errors/stage1/obj/opaque_type_with_field.zig
new file mode 100644
index 0000000000..748d5c0736
--- /dev/null
+++ b/test/compile_errors/stage1/obj/opaque_type_with_field.zig
@@ -0,0 +1,9 @@
+const Opaque = opaque { foo: i32 };
+export fn entry() void {
+    const foo: ?*Opaque = null;
+    _ = foo;
+}
+
+// opaque type with field
+//
+// tmp.zig:1:25: error: opaque types cannot have fields
diff --git a/test/compile_errors/stage1/obj/optional_pointer_to_void_in_extern_struct.zig b/test/compile_errors/stage1/obj/optional_pointer_to_void_in_extern_struct.zig
new file mode 100644
index 0000000000..f4ebb577d9
--- /dev/null
+++ b/test/compile_errors/stage1/obj/optional_pointer_to_void_in_extern_struct.zig
@@ -0,0 +1,12 @@
+const Foo = extern struct {
+    x: ?*const void,
+};
+const Bar = extern struct {
+    foo: Foo,
+    y: i32,
+};
+export fn entry(bar: *Bar) void {_ = bar;}
+
+// optional pointer to void in extern struct
+//
+// tmp.zig:2:5: error: extern structs cannot contain fields of type '?*const void'
diff --git a/test/compile_errors/stage1/obj/or_on_undefined_value.zig b/test/compile_errors/stage1/obj/or_on_undefined_value.zig
new file mode 100644
index 0000000000..ac636bff9e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/or_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: bool = undefined;
+    _ = a or a;
+}
+
+// or on undefined value
+//
+// tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/orelse_on_undefined_value.zig b/test/compile_errors/stage1/obj/orelse_on_undefined_value.zig
new file mode 100644
index 0000000000..28e7c4b425
--- /dev/null
+++ b/test/compile_errors/stage1/obj/orelse_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: ?bool = undefined;
+    _ = a orelse false;
+}
+
+// orelse on undefined value
+//
+// tmp.zig:3:11: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/out_of_range_comptime_int_passed_to_floatToInt.zig b/test/compile_errors/stage1/obj/out_of_range_comptime_int_passed_to_floatToInt.zig
new file mode 100644
index 0000000000..581bb58ffd
--- /dev/null
+++ b/test/compile_errors/stage1/obj/out_of_range_comptime_int_passed_to_floatToInt.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    const x = @floatToInt(i8, 200);
+    _ = x;
+}
+
+// out of range comptime_int passed to @floatToInt
+//
+// tmp.zig:2:31: error: integer value 200 cannot be coerced to type 'i8'
diff --git a/test/compile_errors/stage1/obj/overflow_in_enum_value_allocation.zig b/test/compile_errors/stage1/obj/overflow_in_enum_value_allocation.zig
new file mode 100644
index 0000000000..5c737e06a2
--- /dev/null
+++ b/test/compile_errors/stage1/obj/overflow_in_enum_value_allocation.zig
@@ -0,0 +1,12 @@
+const Moo = enum(u8) {
+    Last = 255,
+    Over,
+};
+pub fn main() void {
+  var y = Moo.Last;
+  _ = y;
+}
+
+// overflow in enum value allocation
+//
+// tmp.zig:3:5: error: enumeration value 256 too large for type 'u8'
diff --git a/test/compile_errors/stage1/obj/packed_union_given_enum_tag_type.zig b/test/compile_errors/stage1/obj/packed_union_given_enum_tag_type.zig
new file mode 100644
index 0000000000..f0bc445295
--- /dev/null
+++ b/test/compile_errors/stage1/obj/packed_union_given_enum_tag_type.zig
@@ -0,0 +1,18 @@
+const Letter = enum {
+    A,
+    B,
+    C,
+};
+const Payload = packed union(Letter) {
+    A: i32,
+    B: f64,
+    C: bool,
+};
+export fn entry() void {
+    var a = Payload { .A = 1234 };
+    _ = a;
+}
+
+// packed union given enum tag type
+//
+// tmp.zig:6:30: error: packed union does not support enum tag type
diff --git a/test/compile_errors/stage1/obj/packed_union_with_automatic_layout_field.zig b/test/compile_errors/stage1/obj/packed_union_with_automatic_layout_field.zig
new file mode 100644
index 0000000000..4450531a5b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/packed_union_with_automatic_layout_field.zig
@@ -0,0 +1,16 @@
+const Foo = struct {
+    a: u32,
+    b: f32,
+};
+const Payload = packed union {
+    A: Foo,
+    B: bool,
+};
+export fn entry() void {
+    var a = Payload { .B = true };
+    _ = a;
+}
+
+// packed union with automatic layout field
+//
+// tmp.zig:6:5: error: non-packed, non-extern struct 'Foo' not allowed in packed union; no guaranteed in-memory representation
diff --git a/test/compile_errors/stage1/obj/panic_called_at_compile_time.zig b/test/compile_errors/stage1/obj/panic_called_at_compile_time.zig
new file mode 100644
index 0000000000..6dd32cdf59
--- /dev/null
+++ b/test/compile_errors/stage1/obj/panic_called_at_compile_time.zig
@@ -0,0 +1,9 @@
+export fn entry() void {
+    comptime {
+        @panic("aoeu",);
+    }
+}
+
+// @panic called at compile time
+//
+// tmp.zig:3:9: error: encountered @panic at compile-time
diff --git a/test/compile_errors/stage1/obj/parameter_redeclaration.zig b/test/compile_errors/stage1/obj/parameter_redeclaration.zig
new file mode 100644
index 0000000000..01fc507afc
--- /dev/null
+++ b/test/compile_errors/stage1/obj/parameter_redeclaration.zig
@@ -0,0 +1,8 @@
+fn f(a : i32, a : i32) void {
+}
+export fn entry() void { f(1, 2); }
+
+// parameter redeclaration
+//
+// tmp.zig:1:15: error: redeclaration of function parameter 'a'
+// tmp.zig:1:6: note: previous declaration here
diff --git a/test/compile_errors/stage1/obj/parameter_shadowing_global.zig b/test/compile_errors/stage1/obj/parameter_shadowing_global.zig
new file mode 100644
index 0000000000..a58a0b93ce
--- /dev/null
+++ b/test/compile_errors/stage1/obj/parameter_shadowing_global.zig
@@ -0,0 +1,10 @@
+const Foo = struct {};
+fn f(Foo: i32) void {}
+export fn entry() void {
+    f(1234);
+}
+
+// parameter shadowing global
+//
+// tmp.zig:2:6: error: local shadows declaration of 'Foo'
+// tmp.zig:1:1: note: declared here
diff --git a/test/compile_errors/stage1/obj/pass_const_ptr_to_mutable_ptr_fn.zig b/test/compile_errors/stage1/obj/pass_const_ptr_to_mutable_ptr_fn.zig
new file mode 100644
index 0000000000..ff0057bb48
--- /dev/null
+++ b/test/compile_errors/stage1/obj/pass_const_ptr_to_mutable_ptr_fn.zig
@@ -0,0 +1,15 @@
+fn foo() bool {
+    const a = @as([]const u8, "a",);
+    const b = &a;
+    return ptrEql(b, b);
+}
+fn ptrEql(a: *[]const u8, b: *[]const u8) bool {
+    _ = a; _ = b;
+    return true;
+}
+
+export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
+
+// pass const ptr to mutable ptr fn
+//
+// tmp.zig:4:19: error: expected type '*[]const u8', found '*const []const u8'
diff --git a/test/compile_errors/stage1/obj/passing_a_not-aligned-enough_pointer_to_cmpxchg.zig b/test/compile_errors/stage1/obj/passing_a_not-aligned-enough_pointer_to_cmpxchg.zig
new file mode 100644
index 0000000000..40564998b7
--- /dev/null
+++ b/test/compile_errors/stage1/obj/passing_a_not-aligned-enough_pointer_to_cmpxchg.zig
@@ -0,0 +1,10 @@
+const AtomicOrder = @import("std").builtin.AtomicOrder;
+export fn entry() bool {
+    var x: i32 align(1) = 1234;
+    while (!@cmpxchgWeak(i32, &x, 1234, 5678, AtomicOrder.SeqCst, AtomicOrder.SeqCst)) {}
+    return x == 5678;
+}
+
+// passing a not-aligned-enough pointer to cmpxchg
+//
+// tmp.zig:4:32: error: expected type '*i32', found '*align(1) i32'
diff --git a/test/compile_errors/stage1/obj/passing_an_under-aligned_function_pointer.zig b/test/compile_errors/stage1/obj/passing_an_under-aligned_function_pointer.zig
new file mode 100644
index 0000000000..f6c0e52cc0
--- /dev/null
+++ b/test/compile_errors/stage1/obj/passing_an_under-aligned_function_pointer.zig
@@ -0,0 +1,11 @@
+export fn entry() void {
+    testImplicitlyDecreaseFnAlign(alignedSmall, 1234);
+}
+fn testImplicitlyDecreaseFnAlign(ptr: fn () align(8) i32, answer: i32) void {
+    if (ptr() != answer) unreachable;
+}
+fn alignedSmall() align(4) i32 { return 1234; }
+
+// passing an under-aligned function pointer
+//
+// tmp.zig:2:35: error: expected type 'fn() align(8) i32', found 'fn() align(4) i32'
diff --git a/test/compile_errors/stage1/obj/peer_cast_then_implicit_cast_const_pointer_to_mutable_C_pointer.zig b/test/compile_errors/stage1/obj/peer_cast_then_implicit_cast_const_pointer_to_mutable_C_pointer.zig
new file mode 100644
index 0000000000..78f072c0d0
--- /dev/null
+++ b/test/compile_errors/stage1/obj/peer_cast_then_implicit_cast_const_pointer_to_mutable_C_pointer.zig
@@ -0,0 +1,9 @@
+export fn func() void {
+    var strValue: [*c]u8 = undefined;
+    strValue = strValue orelse "";
+}
+
+// peer cast then implicit cast const pointer to mutable C pointer
+//
+// tmp.zig:3:32: error: expected type '[*c]u8', found '*const [0:0]u8'
+// tmp.zig:3:32: note: cast discards const qualifier
diff --git a/test/compile_errors/stage1/obj/pointer_arithmetic_on_pointer-to-array.zig b/test/compile_errors/stage1/obj/pointer_arithmetic_on_pointer-to-array.zig
new file mode 100644
index 0000000000..b293ae2b32
--- /dev/null
+++ b/test/compile_errors/stage1/obj/pointer_arithmetic_on_pointer-to-array.zig
@@ -0,0 +1,10 @@
+export fn foo() void {
+    var x: [10]u8 = undefined;
+    var y = &x;
+    var z = y + 1;
+    _ = z;
+}
+
+// pointer arithmetic on pointer-to-array
+//
+// tmp.zig:4:17: error: integer value 1 cannot be coerced to type '*[10]u8'
diff --git a/test/compile_errors/stage1/obj/pointer_attributes_checked_when_coercing_pointer_to_anon_literal.zig b/test/compile_errors/stage1/obj/pointer_attributes_checked_when_coercing_pointer_to_anon_literal.zig
new file mode 100644
index 0000000000..079844ac7f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/pointer_attributes_checked_when_coercing_pointer_to_anon_literal.zig
@@ -0,0 +1,22 @@
+comptime {
+    const c: [][]const u8 = &.{"hello", "world" };
+    _ = c;
+}
+comptime {
+    const c: *[2][]const u8 = &.{"hello", "world" };
+    _ = c;
+}
+const S = struct {a: u8 = 1, b: u32 = 2};
+comptime {
+    const c: *S = &.{};
+    _ = c;
+}
+
+// pointer attributes checked when coercing pointer to anon literal
+//
+// tmp.zig:2:31: error: cannot cast pointer to array literal to slice type '[][]const u8'
+// tmp.zig:2:31: note: cast discards const qualifier
+// tmp.zig:6:33: error: cannot cast pointer to array literal to '*[2][]const u8'
+// tmp.zig:6:33: note: cast discards const qualifier
+// tmp.zig:11:21: error: expected type '*S', found '*const struct:11:21'
+// tmp.zig:11:21: note: cast discards const qualifier
diff --git a/test/compile_errors/stage1/obj/pointer_to_noreturn.zig b/test/compile_errors/stage1/obj/pointer_to_noreturn.zig
new file mode 100644
index 0000000000..3b945919fc
--- /dev/null
+++ b/test/compile_errors/stage1/obj/pointer_to_noreturn.zig
@@ -0,0 +1,6 @@
+fn a() *noreturn {}
+export fn entry() void { _ = a(); }
+
+// pointer to noreturn
+//
+// tmp.zig:1:9: error: pointer to noreturn not allowed
diff --git a/test/compile_errors/stage1/obj/popCount-non-integer.zig b/test/compile_errors/stage1/obj/popCount-non-integer.zig
new file mode 100644
index 0000000000..694b794927
--- /dev/null
+++ b/test/compile_errors/stage1/obj/popCount-non-integer.zig
@@ -0,0 +1,7 @@
+export fn entry(x: f32) u32 {
+    return @popCount(f32, x);
+}
+
+// @popCount - non-integer
+//
+// tmp.zig:2:22: error: expected integer type, found 'f32'
diff --git a/test/compile_errors/stage1/obj/prevent_bad_implicit_casting_of_anyframe_types.zig b/test/compile_errors/stage1/obj/prevent_bad_implicit_casting_of_anyframe_types.zig
new file mode 100644
index 0000000000..14bdb9cb11
--- /dev/null
+++ b/test/compile_errors/stage1/obj/prevent_bad_implicit_casting_of_anyframe_types.zig
@@ -0,0 +1,22 @@
+export fn a() void {
+    var x: anyframe = undefined;
+    var y: anyframe->i32 = x;
+    _ = y;
+}
+export fn b() void {
+    var x: i32 = undefined;
+    var y: anyframe->i32 = x;
+    _ = y;
+}
+export fn c() void {
+    var x: @Frame(func) = undefined;
+    var y: anyframe->i32 = &x;
+    _ = y;
+}
+fn func() void {}
+
+// prevent bad implicit casting of anyframe types
+//
+// tmp.zig:3:28: error: expected type 'anyframe->i32', found 'anyframe'
+// tmp.zig:8:28: error: expected type 'anyframe->i32', found 'i32'
+// tmp.zig:13:29: error: expected type 'anyframe->i32', found '*@Frame(func)'
diff --git a/test/compile_errors/stage1/obj/primitives_take_precedence_over_declarations.zig b/test/compile_errors/stage1/obj/primitives_take_precedence_over_declarations.zig
new file mode 100644
index 0000000000..3517c07917
--- /dev/null
+++ b/test/compile_errors/stage1/obj/primitives_take_precedence_over_declarations.zig
@@ -0,0 +1,9 @@
+const @"u8" = u16;
+export fn entry() void {
+    const a: u8 = 300;
+    _ = a;
+}
+
+// primitives take precedence over declarations
+//
+// tmp.zig:3:19: error: integer value 300 cannot be coerced to type 'u8'
diff --git a/test/compile_errors/stage1/obj/ptrCast_a_0_bit_type_to_a_non-_0_bit_type.zig b/test/compile_errors/stage1/obj/ptrCast_a_0_bit_type_to_a_non-_0_bit_type.zig
new file mode 100644
index 0000000000..63d0656f21
--- /dev/null
+++ b/test/compile_errors/stage1/obj/ptrCast_a_0_bit_type_to_a_non-_0_bit_type.zig
@@ -0,0 +1,11 @@
+export fn entry() bool {
+    var x: u0 = 0;
+    const p = @ptrCast(?*u0, &x);
+    return p == null;
+}
+
+// @ptrCast a 0 bit type to a non- 0 bit type
+//
+// tmp.zig:3:15: error: '*u0' and '?*u0' do not have the same in-memory representation
+// tmp.zig:3:31: note: '*u0' has no in-memory bits
+// tmp.zig:3:24: note: '?*u0' has in-memory bits
diff --git a/test/compile_errors/stage1/obj/ptrCast_discards_const_qualifier.zig b/test/compile_errors/stage1/obj/ptrCast_discards_const_qualifier.zig
new file mode 100644
index 0000000000..1517fd4bd8
--- /dev/null
+++ b/test/compile_errors/stage1/obj/ptrCast_discards_const_qualifier.zig
@@ -0,0 +1,9 @@
+export fn entry() void {
+    const x: i32 = 1234;
+    const y = @ptrCast(*i32, &x);
+    _ = y;
+}
+
+// @ptrCast discards const qualifier
+//
+// tmp.zig:3:15: error: cast discards const qualifier
diff --git a/test/compile_errors/stage1/obj/ptrToInt_0_to_non_optional_pointer.zig b/test/compile_errors/stage1/obj/ptrToInt_0_to_non_optional_pointer.zig
new file mode 100644
index 0000000000..fde1e53c1a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/ptrToInt_0_to_non_optional_pointer.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    var b = @intToPtr(*i32, 0);
+    _ = b;
+}
+
+// @ptrToInt 0 to non optional pointer
+//
+// tmp.zig:2:13: error: pointer type '*i32' does not allow address zero
diff --git a/test/compile_errors/stage1/obj/ptrToInt_on_void.zig b/test/compile_errors/stage1/obj/ptrToInt_on_void.zig
new file mode 100644
index 0000000000..fd43053103
--- /dev/null
+++ b/test/compile_errors/stage1/obj/ptrToInt_on_void.zig
@@ -0,0 +1,7 @@
+export fn entry() bool {
+    return @ptrToInt(&{}) == @ptrToInt(&{});
+}
+
+// @ptrToInt on *void
+//
+// tmp.zig:2:23: error: pointer to size 0 type has no address
diff --git a/test/compile_errors/stage1/obj/ptrcast_to_non-pointer.zig b/test/compile_errors/stage1/obj/ptrcast_to_non-pointer.zig
new file mode 100644
index 0000000000..74894d5e8a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/ptrcast_to_non-pointer.zig
@@ -0,0 +1,7 @@
+export fn entry(a: *i32) usize {
+    return @ptrCast(usize, a);
+}
+
+// ptrcast to non-pointer
+//
+// tmp.zig:2:21: error: expected pointer, found 'usize'
diff --git a/test/compile_errors/stage1/obj/range_operator_in_switch_used_on_error_set.zig b/test/compile_errors/stage1/obj/range_operator_in_switch_used_on_error_set.zig
new file mode 100644
index 0000000000..4f2949c50c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/range_operator_in_switch_used_on_error_set.zig
@@ -0,0 +1,17 @@
+export fn entry() void {
+    try foo(452) catch |err| switch (err) {
+        error.A ... error.B => {},
+        else => {},
+    };
+}
+fn foo(x: i32) !void {
+    switch (x) {
+        0 ... 10 => return error.Foo,
+        11 ... 20 => return error.Bar,
+        else => {},
+    }
+}
+
+// range operator in switch used on error set
+//
+// tmp.zig:3:17: error: operator not allowed for errors
diff --git a/test/compile_errors/stage1/obj/reading_past_end_of_pointer_casted_array.zig b/test/compile_errors/stage1/obj/reading_past_end_of_pointer_casted_array.zig
new file mode 100644
index 0000000000..558797d69b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/reading_past_end_of_pointer_casted_array.zig
@@ -0,0 +1,11 @@
+comptime {
+    const array: [4]u8 = "aoeu".*;
+    const sub_array = array[1..];
+    const int_ptr = @ptrCast(*const u24, sub_array);
+    const deref = int_ptr.*;
+    _ = deref;
+}
+
+// reading past end of pointer casted array
+//
+// tmp.zig:5:26: error: attempt to read 4 bytes from [4]u8 at index 1 which is 3 bytes
diff --git a/test/compile_errors/stage1/obj/recursive_inferred_error_set.zig b/test/compile_errors/stage1/obj/recursive_inferred_error_set.zig
new file mode 100644
index 0000000000..8059833923
--- /dev/null
+++ b/test/compile_errors/stage1/obj/recursive_inferred_error_set.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    foo() catch unreachable;
+}
+fn foo() !void {
+    try foo();
+}
+
+// recursive inferred error set
+//
+// tmp.zig:5:5: error: cannot resolve inferred error set '@typeInfo(@typeInfo(@TypeOf(foo)).Fn.return_type.?).ErrorUnion.error_set': function 'foo' not fully analyzed yet
diff --git a/test/compile_errors/stage1/obj/redefinition_of_enums.zig b/test/compile_errors/stage1/obj/redefinition_of_enums.zig
new file mode 100644
index 0000000000..b4033536c3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/redefinition_of_enums.zig
@@ -0,0 +1,7 @@
+const A = enum {x};
+const A = enum {x};
+
+// redefinition of enums
+//
+// tmp.zig:2:1: error: redeclaration of 'A'
+// tmp.zig:1:1: note: other declaration here
diff --git a/test/compile_errors/stage1/obj/redefinition_of_global_variables.zig b/test/compile_errors/stage1/obj/redefinition_of_global_variables.zig
new file mode 100644
index 0000000000..b2267423b0
--- /dev/null
+++ b/test/compile_errors/stage1/obj/redefinition_of_global_variables.zig
@@ -0,0 +1,7 @@
+var a : i32 = 1;
+var a : i32 = 2;
+
+// redefinition of global variables
+//
+// tmp.zig:2:1: error: redeclaration of 'a'
+// tmp.zig:1:1: note: other declaration here
diff --git a/test/compile_errors/stage1/obj/redefinition_of_struct.zig b/test/compile_errors/stage1/obj/redefinition_of_struct.zig
new file mode 100644
index 0000000000..8c169356c9
--- /dev/null
+++ b/test/compile_errors/stage1/obj/redefinition_of_struct.zig
@@ -0,0 +1,7 @@
+const A = struct { x : i32, };
+const A = struct { y : i32, };
+
+// redefinition of struct
+//
+// tmp.zig:2:1: error: redeclaration of 'A'
+// tmp.zig:1:1: note: other declaration here
diff --git a/test/compile_errors/stage1/obj/refer_to_the_type_of_a_generic_function.zig b/test/compile_errors/stage1/obj/refer_to_the_type_of_a_generic_function.zig
new file mode 100644
index 0000000000..6e23854cd6
--- /dev/null
+++ b/test/compile_errors/stage1/obj/refer_to_the_type_of_a_generic_function.zig
@@ -0,0 +1,9 @@
+export fn entry() void {
+    const Func = fn (type) void;
+    const f: Func = undefined;
+    f(i32);
+}
+
+// refer to the type of a generic function
+//
+// tmp.zig:4:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/referring_to_a_struct_that_is_invalid.zig b/test/compile_errors/stage1/obj/referring_to_a_struct_that_is_invalid.zig
new file mode 100644
index 0000000000..5f646461d8
--- /dev/null
+++ b/test/compile_errors/stage1/obj/referring_to_a_struct_that_is_invalid.zig
@@ -0,0 +1,15 @@
+const UsbDeviceRequest = struct {
+    Type: u8,
+};
+
+export fn foo() void {
+    comptime assert(@sizeOf(UsbDeviceRequest) == 0x8);
+}
+
+fn assert(ok: bool) void {
+    if (!ok) unreachable;
+}
+
+// referring to a struct that is invalid
+//
+// tmp.zig:10:14: error: reached unreachable code
diff --git a/test/compile_errors/stage1/obj/regression_test_2980_base_type_u32_is_not_type_checked_properly_when_assigning_a_value_within_a_struct.zig b/test/compile_errors/stage1/obj/regression_test_2980_base_type_u32_is_not_type_checked_properly_when_assigning_a_value_within_a_struct.zig
new file mode 100644
index 0000000000..a714b10ef6
--- /dev/null
+++ b/test/compile_errors/stage1/obj/regression_test_2980_base_type_u32_is_not_type_checked_properly_when_assigning_a_value_within_a_struct.zig
@@ -0,0 +1,19 @@
+const Foo = struct {
+    ptr: ?*usize,
+    uval: u32,
+};
+fn get_uval(x: u32) !u32 {
+    _ = x;
+    return error.NotFound;
+}
+export fn entry() void {
+    const afoo = Foo{
+        .ptr = null,
+        .uval = get_uval(42),
+    };
+    _ = afoo;
+}
+
+// regression test #2980: base type u32 is not type checked properly when assigning a value within a struct
+//
+// tmp.zig:12:25: error: cannot convert error union to payload type. consider using `try`, `catch`, or `if`. expected type 'u32', found '@typeInfo(@typeInfo(@TypeOf(get_uval)).Fn.return_type.?).ErrorUnion.error_set!u32'
diff --git a/test/compile_errors/stage1/obj/reify_type.Fn_with_is_generic_true.zig b/test/compile_errors/stage1/obj/reify_type.Fn_with_is_generic_true.zig
new file mode 100644
index 0000000000..ed33158649
--- /dev/null
+++ b/test/compile_errors/stage1/obj/reify_type.Fn_with_is_generic_true.zig
@@ -0,0 +1,15 @@
+const Foo = @Type(.{
+    .Fn = .{
+        .calling_convention = .Unspecified,
+        .alignment = 0,
+        .is_generic = true,
+        .is_var_args = false,
+        .return_type = u0,
+        .args = &.{},
+    },
+});
+comptime { _ = Foo; }
+
+// @Type(.Fn) with is_generic = true
+//
+// tmp.zig:1:20: error: Type.Fn.is_generic must be false for @Type
diff --git a/test/compile_errors/stage1/obj/reify_type.Fn_with_is_var_args_true_and_non-C_callconv.zig b/test/compile_errors/stage1/obj/reify_type.Fn_with_is_var_args_true_and_non-C_callconv.zig
new file mode 100644
index 0000000000..a57484075f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/reify_type.Fn_with_is_var_args_true_and_non-C_callconv.zig
@@ -0,0 +1,15 @@
+const Foo = @Type(.{
+    .Fn = .{
+        .calling_convention = .Unspecified,
+        .alignment = 0,
+        .is_generic = false,
+        .is_var_args = true,
+        .return_type = u0,
+        .args = &.{},
+    },
+});
+comptime { _ = Foo; }
+
+// @Type(.Fn) with is_var_args = true and non-C callconv
+//
+// tmp.zig:1:20: error: varargs functions must have C calling convention
diff --git a/test/compile_errors/stage1/obj/reify_type.Fn_with_return_type_null.zig b/test/compile_errors/stage1/obj/reify_type.Fn_with_return_type_null.zig
new file mode 100644
index 0000000000..f8ddea52cf
--- /dev/null
+++ b/test/compile_errors/stage1/obj/reify_type.Fn_with_return_type_null.zig
@@ -0,0 +1,15 @@
+const Foo = @Type(.{
+    .Fn = .{
+        .calling_convention = .Unspecified,
+        .alignment = 0,
+        .is_generic = false,
+        .is_var_args = false,
+        .return_type = null,
+        .args = &.{},
+    },
+});
+comptime { _ = Foo; }
+
+// @Type(.Fn) with return_type = null
+//
+// tmp.zig:1:20: error: Type.Fn.return_type must be non-null for @Type
diff --git a/test/compile_errors/stage1/obj/reify_type.Pointer_with_invalid_address_space.zig b/test/compile_errors/stage1/obj/reify_type.Pointer_with_invalid_address_space.zig
new file mode 100644
index 0000000000..78160fae58
--- /dev/null
+++ b/test/compile_errors/stage1/obj/reify_type.Pointer_with_invalid_address_space.zig
@@ -0,0 +1,16 @@
+export fn entry() void {
+    _ = @Type(.{ .Pointer = .{
+        .size = .One,
+        .is_const = false,
+        .is_volatile = false,
+        .alignment = 1,
+        .address_space = .gs,
+        .child = u8,
+        .is_allowzero = false,
+        .sentinel = null,
+    }});
+}
+
+// @Type(.Pointer) with invalid address space 
+//
+// tmp.zig:2:16: error: address space 'gs' not available in stage 1 compiler, must be .generic
diff --git a/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_non-integer_tag_type.zig b/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_non-integer_tag_type.zig
new file mode 100644
index 0000000000..e77c2eb627
--- /dev/null
+++ b/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_non-integer_tag_type.zig
@@ -0,0 +1,16 @@
+const Tag = @Type(.{
+    .Enum = .{
+        .layout = .Auto,
+        .tag_type = bool,
+        .fields = &.{},
+        .decls = &.{},
+        .is_exhaustive = false,
+    },
+});
+export fn entry() void {
+    _ = @intToEnum(Tag, 0);
+}
+
+// @Type for exhaustive enum with non-integer tag type
+//
+// tmp.zig:1:20: error: Type.Enum.tag_type must be an integer type, not 'bool'
diff --git a/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_undefined_tag_type.zig b/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_undefined_tag_type.zig
new file mode 100644
index 0000000000..6a00516387
--- /dev/null
+++ b/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_undefined_tag_type.zig
@@ -0,0 +1,16 @@
+const Tag = @Type(.{
+    .Enum = .{
+        .layout = .Auto,
+        .tag_type = undefined,
+        .fields = &.{},
+        .decls = &.{},
+        .is_exhaustive = false,
+    },
+});
+export fn entry() void {
+    _ = @intToEnum(Tag, 0);
+}
+
+// @Type for exhaustive enum with undefined tag type
+//
+// tmp.zig:1:20: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_zero_fields.zig b/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_zero_fields.zig
new file mode 100644
index 0000000000..87689247aa
--- /dev/null
+++ b/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_zero_fields.zig
@@ -0,0 +1,16 @@
+const Tag = @Type(.{
+    .Enum = .{
+        .layout = .Auto,
+        .tag_type = u1,
+        .fields = &.{},
+        .decls = &.{},
+        .is_exhaustive = true,
+    },
+});
+export fn entry() void {
+    _ = @intToEnum(Tag, 0);
+}
+
+// @Type for exhaustive enum with zero fields
+//
+// tmp.zig:1:20: error: enums must have 1 or more fields
diff --git a/test/compile_errors/stage1/obj/reify_type_for_tagged_union_with_extra_enum_field.zig b/test/compile_errors/stage1/obj/reify_type_for_tagged_union_with_extra_enum_field.zig
new file mode 100644
index 0000000000..f9155d7161
--- /dev/null
+++ b/test/compile_errors/stage1/obj/reify_type_for_tagged_union_with_extra_enum_field.zig
@@ -0,0 +1,32 @@
+const Tag = @Type(.{
+    .Enum = .{
+        .layout = .Auto,
+        .tag_type = u2,
+        .fields = &.{
+            .{ .name = "signed", .value = 0 },
+            .{ .name = "unsigned", .value = 1 },
+            .{ .name = "arst", .value = 2 },
+        },
+        .decls = &.{},
+        .is_exhaustive = true,
+    },
+});
+const Tagged = @Type(.{
+    .Union = .{
+        .layout = .Auto,
+        .tag_type = Tag,
+        .fields = &.{
+            .{ .name = "signed", .field_type = i32, .alignment = @alignOf(i32) },
+            .{ .name = "unsigned", .field_type = u32, .alignment = @alignOf(u32) },
+        },
+        .decls = &.{},
+    },
+});
+export fn entry() void {
+    var tagged = Tagged{ .signed = -1 };
+    tagged = .{ .unsigned = 1 };
+}
+
+// @Type for tagged union with extra enum field
+//
+// tmp.zig:14:23: error: enum field missing: 'arst'
diff --git a/test/compile_errors/stage1/obj/reify_type_for_tagged_union_with_extra_union_field.zig b/test/compile_errors/stage1/obj/reify_type_for_tagged_union_with_extra_union_field.zig
new file mode 100644
index 0000000000..9cd82213df
--- /dev/null
+++ b/test/compile_errors/stage1/obj/reify_type_for_tagged_union_with_extra_union_field.zig
@@ -0,0 +1,33 @@
+const Tag = @Type(.{
+    .Enum = .{
+        .layout = .Auto,
+        .tag_type = u1,
+        .fields = &.{
+            .{ .name = "signed", .value = 0 },
+            .{ .name = "unsigned", .value = 1 },
+        },
+        .decls = &.{},
+        .is_exhaustive = true,
+    },
+});
+const Tagged = @Type(.{
+    .Union = .{
+        .layout = .Auto,
+        .tag_type = Tag,
+        .fields = &.{
+            .{ .name = "signed", .field_type = i32, .alignment = @alignOf(i32) },
+            .{ .name = "unsigned", .field_type = u32, .alignment = @alignOf(u32) },
+            .{ .name = "arst", .field_type = f32, .alignment = @alignOf(f32) },
+        },
+        .decls = &.{},
+    },
+});
+export fn entry() void {
+    var tagged = Tagged{ .signed = -1 };
+    tagged = .{ .unsigned = 1 };
+}
+
+// @Type for tagged union with extra union field
+//
+// tmp.zig:13:23: error: enum field not found: 'arst'
+// tmp.zig:1:20: note: enum declared here
diff --git a/test/compile_errors/stage1/obj/reify_type_for_union_with_opaque_field.zig b/test/compile_errors/stage1/obj/reify_type_for_union_with_opaque_field.zig
new file mode 100644
index 0000000000..374ccb544b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/reify_type_for_union_with_opaque_field.zig
@@ -0,0 +1,17 @@
+const Untagged = @Type(.{
+    .Union = .{
+        .layout = .Auto,
+        .tag_type = null,
+        .fields = &.{
+            .{ .name = "foo", .field_type = opaque {}, .alignment = 1 },
+        },
+        .decls = &.{},
+    },
+});
+export fn entry() void {
+    _ = Untagged{};
+}
+
+// @Type for union with opaque field
+//
+// tmp.zig:1:25: error: opaque types have unknown size and therefore cannot be directly embedded in unions
diff --git a/test/compile_errors/stage1/obj/reify_type_for_union_with_zero_fields.zig b/test/compile_errors/stage1/obj/reify_type_for_union_with_zero_fields.zig
new file mode 100644
index 0000000000..8243ff3292
--- /dev/null
+++ b/test/compile_errors/stage1/obj/reify_type_for_union_with_zero_fields.zig
@@ -0,0 +1,15 @@
+const Untagged = @Type(.{
+    .Union = .{
+        .layout = .Auto,
+        .tag_type = null,
+        .fields = &.{},
+        .decls = &.{},
+    },
+});
+export fn entry() void {
+    _ = Untagged{};
+}
+
+// @Type for union with zero fields
+//
+// tmp.zig:1:25: error: unions must have 1 or more fields
diff --git a/test/compile_errors/stage1/obj/reify_type_union_payload_is_undefined.zig b/test/compile_errors/stage1/obj/reify_type_union_payload_is_undefined.zig
new file mode 100644
index 0000000000..43261dc32f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/reify_type_union_payload_is_undefined.zig
@@ -0,0 +1,8 @@
+const Foo = @Type(.{
+    .Struct = undefined,
+});
+comptime { _ = Foo; }
+
+// @Type() union payload is undefined
+//
+// tmp.zig:1:20: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/reify_type_with_Type.Int.zig b/test/compile_errors/stage1/obj/reify_type_with_Type.Int.zig
new file mode 100644
index 0000000000..cea09d3f19
--- /dev/null
+++ b/test/compile_errors/stage1/obj/reify_type_with_Type.Int.zig
@@ -0,0 +1,11 @@
+const builtin = @import("std").builtin;
+export fn entry() void {
+    _ = @Type(builtin.Type.Int{
+        .signedness = .signed,
+        .bits = 8,
+    });
+}
+
+// @Type with Type.Int
+//
+// tmp.zig:3:31: error: expected type 'std.builtin.Type', found 'std.builtin.Type.Int'
diff --git a/test/compile_errors/stage1/obj/reify_type_with_non-constant_expression.zig b/test/compile_errors/stage1/obj/reify_type_with_non-constant_expression.zig
new file mode 100644
index 0000000000..a58b2a6b33
--- /dev/null
+++ b/test/compile_errors/stage1/obj/reify_type_with_non-constant_expression.zig
@@ -0,0 +1,9 @@
+const builtin = @import("std").builtin;
+var globalTypeInfo : builtin.Type = undefined;
+export fn entry() void {
+    _ = @Type(globalTypeInfo);
+}
+
+// @Type with non-constant expression
+//
+// tmp.zig:4:15: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/reify_type_with_undefined.zig b/test/compile_errors/stage1/obj/reify_type_with_undefined.zig
new file mode 100644
index 0000000000..984c9ac555
--- /dev/null
+++ b/test/compile_errors/stage1/obj/reify_type_with_undefined.zig
@@ -0,0 +1,18 @@
+comptime {
+    _ = @Type(.{ .Array = .{ .len = 0, .child = u8, .sentinel = undefined } });
+}
+comptime {
+    _ = @Type(.{
+        .Struct = .{
+            .fields = undefined,
+            .decls = undefined,
+            .is_tuple = false,
+            .layout = .Auto,
+        },
+    });
+}
+
+// @Type with undefined
+//
+// tmp.zig:2:16: error: use of undefined value here causes undefined behavior
+// tmp.zig:5:16: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/result_location_incompatibility_mismatching_handle_is_ptr.zig b/test/compile_errors/stage1/obj/result_location_incompatibility_mismatching_handle_is_ptr.zig
new file mode 100644
index 0000000000..a45fd9f41a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/result_location_incompatibility_mismatching_handle_is_ptr.zig
@@ -0,0 +1,16 @@
+export fn entry() void {
+    var damn = Container{
+        .not_optional = getOptional(),
+    };
+    _ = damn;
+}
+pub fn getOptional() ?i32 {
+    return 0;
+}
+pub const Container = struct {
+    not_optional: i32,
+};
+
+// result location incompatibility mismatching handle_is_ptr
+//
+// tmp.zig:3:36: error: cannot convert optional to payload type. consider using `.?`, `orelse`, or `if`. expected type 'i32', found '?i32'
diff --git a/test/compile_errors/stage1/obj/result_location_incompatibility_mismatching_handle_is_ptr_generic_call.zig b/test/compile_errors/stage1/obj/result_location_incompatibility_mismatching_handle_is_ptr_generic_call.zig
new file mode 100644
index 0000000000..8b913bd15c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/result_location_incompatibility_mismatching_handle_is_ptr_generic_call.zig
@@ -0,0 +1,16 @@
+export fn entry() void {
+    var damn = Container{
+        .not_optional = getOptional(i32),
+    };
+    _ = damn;
+}
+pub fn getOptional(comptime T: type) ?T {
+    return 0;
+}
+pub const Container = struct {
+    not_optional: i32,
+};
+
+// result location incompatibility mismatching handle_is_ptr (generic call)
+//
+// tmp.zig:3:36: error: cannot convert optional to payload type. consider using `.?`, `orelse`, or `if`. expected type 'i32', found '?i32'
diff --git a/test/compile_errors/stage1/obj/return_from_defer_expression.zig b/test/compile_errors/stage1/obj/return_from_defer_expression.zig
new file mode 100644
index 0000000000..0f4ac8e071
--- /dev/null
+++ b/test/compile_errors/stage1/obj/return_from_defer_expression.zig
@@ -0,0 +1,19 @@
+pub fn testTrickyDefer() !void {
+    defer canFail() catch {};
+
+    defer try canFail();
+
+    const a = maybeInt() orelse return;
+}
+
+fn canFail() anyerror!void { }
+
+pub fn maybeInt() ?i32 {
+    return 0;
+}
+
+export fn entry() usize { return @sizeOf(@TypeOf(testTrickyDefer)); }
+
+// return from defer expression
+//
+// tmp.zig:4:11: error: 'try' not allowed inside defer expression
diff --git a/test/compile_errors/stage1/obj/returning_error_from_void_async_function.zig b/test/compile_errors/stage1/obj/returning_error_from_void_async_function.zig
new file mode 100644
index 0000000000..a00422dd12
--- /dev/null
+++ b/test/compile_errors/stage1/obj/returning_error_from_void_async_function.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    _ = async amain();
+}
+fn amain() callconv(.Async) void {
+    return error.ShouldBeCompileError;
+}
+
+// returning error from void async function
+//
+// tmp.zig:5:17: error: expected type 'void', found 'error{ShouldBeCompileError}'
diff --git a/test/compile_errors/stage1/obj/runtime-known_async_function_called.zig b/test/compile_errors/stage1/obj/runtime-known_async_function_called.zig
new file mode 100644
index 0000000000..52afd83a11
--- /dev/null
+++ b/test/compile_errors/stage1/obj/runtime-known_async_function_called.zig
@@ -0,0 +1,12 @@
+export fn entry() void {
+    _ = async amain();
+}
+fn amain() void {
+    var ptr = afunc;
+    _ = ptr();
+}
+fn afunc() callconv(.Async) void {}
+
+// runtime-known async function called
+//
+// tmp.zig:6:12: error: function is not comptime-known; @asyncCall required
diff --git a/test/compile_errors/stage1/obj/runtime-known_function_called_with_async_keyword.zig b/test/compile_errors/stage1/obj/runtime-known_function_called_with_async_keyword.zig
new file mode 100644
index 0000000000..79f0420a83
--- /dev/null
+++ b/test/compile_errors/stage1/obj/runtime-known_function_called_with_async_keyword.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    var ptr = afunc;
+    _ = async ptr();
+}
+
+fn afunc() callconv(.Async) void { }
+
+// runtime-known function called with async keyword
+//
+// tmp.zig:3:15: error: function is not comptime-known; @asyncCall required
diff --git a/test/compile_errors/stage1/obj/runtime_assignment_to_comptime_struct_type.zig b/test/compile_errors/stage1/obj/runtime_assignment_to_comptime_struct_type.zig
new file mode 100644
index 0000000000..f8a3fd3ba1
--- /dev/null
+++ b/test/compile_errors/stage1/obj/runtime_assignment_to_comptime_struct_type.zig
@@ -0,0 +1,13 @@
+const Foo = struct {
+    Bar: u8,
+    Baz: type,
+};
+export fn f() void {
+    var x: u8 = 0;
+    const foo = Foo { .Bar = x, .Baz = u8 };
+    _ = foo;
+}
+
+// runtime assignment to comptime struct type
+//
+// tmp.zig:7:23: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/runtime_assignment_to_comptime_union_type.zig b/test/compile_errors/stage1/obj/runtime_assignment_to_comptime_union_type.zig
new file mode 100644
index 0000000000..bc4f093b0d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/runtime_assignment_to_comptime_union_type.zig
@@ -0,0 +1,13 @@
+const Foo = union {
+    Bar: u8,
+    Baz: type,
+};
+export fn f() void {
+    var x: u8 = 0;
+    const foo = Foo { .Bar = x };
+    _ = foo;
+}
+
+// runtime assignment to comptime union type
+//
+// tmp.zig:7:23: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/runtime_cast_to_union_which_has_non-void_fields.zig b/test/compile_errors/stage1/obj/runtime_cast_to_union_which_has_non-void_fields.zig
new file mode 100644
index 0000000000..8be361f2fe
--- /dev/null
+++ b/test/compile_errors/stage1/obj/runtime_cast_to_union_which_has_non-void_fields.zig
@@ -0,0 +1,18 @@
+const Letter = enum { A, B, C };
+const Value = union(Letter) {
+    A: i32,
+    B,
+    C,
+};
+export fn entry() void {
+    foo(Letter.A);
+}
+fn foo(l: Letter) void {
+    var x: Value = l;
+    _ = x;
+}
+
+// runtime cast to union which has non-void fields
+//
+// tmp.zig:11:20: error: runtime cast to union 'Value' which has non-void fields
+// tmp.zig:3:5: note: field 'A' has type 'i32'
diff --git a/test/compile_errors/stage1/obj/runtime_index_into_comptime_type_slice.zig b/test/compile_errors/stage1/obj/runtime_index_into_comptime_type_slice.zig
new file mode 100644
index 0000000000..4b9538c1a1
--- /dev/null
+++ b/test/compile_errors/stage1/obj/runtime_index_into_comptime_type_slice.zig
@@ -0,0 +1,15 @@
+const Struct = struct {
+    a: u32,
+};
+fn getIndex() usize {
+    return 2;
+}
+export fn entry() void {
+    const index = getIndex();
+    const field = @typeInfo(Struct).Struct.fields[index];
+    _ = field;
+}
+
+// runtime index into comptime type slice
+//
+// tmp.zig:9:51: error: values of type 'std.builtin.Type.StructField' must be comptime known, but index value is runtime known
diff --git a/test/compile_errors/stage1/obj/saturating_arithmetic_does_not_allow_floats.zig b/test/compile_errors/stage1/obj/saturating_arithmetic_does_not_allow_floats.zig
new file mode 100644
index 0000000000..57ee724e74
--- /dev/null
+++ b/test/compile_errors/stage1/obj/saturating_arithmetic_does_not_allow_floats.zig
@@ -0,0 +1,7 @@
+export fn a() void {
+    _ = @as(f32, 1.0) +| @as(f32, 1.0);
+}
+
+// saturating arithmetic does not allow floats
+//
+// error: invalid operands to binary expression: 'f32' and 'f32'
diff --git a/test/compile_errors/stage1/obj/saturating_shl_assign_does_not_allow_negative_rhs_at_comptime.zig b/test/compile_errors/stage1/obj/saturating_shl_assign_does_not_allow_negative_rhs_at_comptime.zig
new file mode 100644
index 0000000000..9a46367ae5
--- /dev/null
+++ b/test/compile_errors/stage1/obj/saturating_shl_assign_does_not_allow_negative_rhs_at_comptime.zig
@@ -0,0 +1,10 @@
+export fn a() void {
+    comptime {
+      var x = @as(i32, 1);
+      x <<|= @as(i32, -2);
+  }
+}
+
+// saturating shl assign does not allow negative rhs at comptime
+//
+// error: shift by negative value -2
diff --git a/test/compile_errors/stage1/obj/saturating_shl_does_not_allow_negative_rhs_at_comptime.zig b/test/compile_errors/stage1/obj/saturating_shl_does_not_allow_negative_rhs_at_comptime.zig
new file mode 100644
index 0000000000..ffe715a8e3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/saturating_shl_does_not_allow_negative_rhs_at_comptime.zig
@@ -0,0 +1,7 @@
+export fn a() void {
+    _ = @as(i32, 1) <<| @as(i32, -2);
+}
+
+// saturating shl does not allow negative rhs at comptime
+//
+// error: shift by negative value -2
diff --git a/test/compile_errors/stage1/obj/setAlignStack_in_inline_function.zig b/test/compile_errors/stage1/obj/setAlignStack_in_inline_function.zig
new file mode 100644
index 0000000000..9261ecdb18
--- /dev/null
+++ b/test/compile_errors/stage1/obj/setAlignStack_in_inline_function.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    foo();
+}
+fn foo() callconv(.Inline) void {
+    @setAlignStack(16);
+}
+
+// @setAlignStack in inline function
+//
+// tmp.zig:5:5: error: @setAlignStack in inline function
diff --git a/test/compile_errors/stage1/obj/setAlignStack_in_naked_function.zig b/test/compile_errors/stage1/obj/setAlignStack_in_naked_function.zig
new file mode 100644
index 0000000000..d7146625c5
--- /dev/null
+++ b/test/compile_errors/stage1/obj/setAlignStack_in_naked_function.zig
@@ -0,0 +1,7 @@
+export fn entry() callconv(.Naked) void {
+    @setAlignStack(16);
+}
+
+// @setAlignStack in naked function
+//
+// tmp.zig:2:5: error: @setAlignStack in naked function
diff --git a/test/compile_errors/stage1/obj/setAlignStack_outside_function.zig b/test/compile_errors/stage1/obj/setAlignStack_outside_function.zig
new file mode 100644
index 0000000000..c9ac12e6e0
--- /dev/null
+++ b/test/compile_errors/stage1/obj/setAlignStack_outside_function.zig
@@ -0,0 +1,7 @@
+comptime {
+    @setAlignStack(16);
+}
+
+// @setAlignStack outside function
+//
+// tmp.zig:2:5: error: @setAlignStack outside function
diff --git a/test/compile_errors/stage1/obj/setAlignStack_set_twice.zig b/test/compile_errors/stage1/obj/setAlignStack_set_twice.zig
new file mode 100644
index 0000000000..de8cde7c01
--- /dev/null
+++ b/test/compile_errors/stage1/obj/setAlignStack_set_twice.zig
@@ -0,0 +1,9 @@
+export fn entry() void {
+    @setAlignStack(16);
+    @setAlignStack(16);
+}
+
+// @setAlignStack set twice
+//
+// tmp.zig:3:5: error: alignstack set twice
+// tmp.zig:2:5: note: first set here
diff --git a/test/compile_errors/stage1/obj/setAlignStack_too_big.zig b/test/compile_errors/stage1/obj/setAlignStack_too_big.zig
new file mode 100644
index 0000000000..669ec45204
--- /dev/null
+++ b/test/compile_errors/stage1/obj/setAlignStack_too_big.zig
@@ -0,0 +1,7 @@
+export fn entry() void {
+    @setAlignStack(511 + 1);
+}
+
+// @setAlignStack too big
+//
+// tmp.zig:2:5: error: attempt to @setAlignStack(512); maximum is 256
diff --git a/test/compile_errors/stage1/obj/setFloatMode_twice_for_same_scope.zig b/test/compile_errors/stage1/obj/setFloatMode_twice_for_same_scope.zig
new file mode 100644
index 0000000000..3e55604030
--- /dev/null
+++ b/test/compile_errors/stage1/obj/setFloatMode_twice_for_same_scope.zig
@@ -0,0 +1,9 @@
+export fn foo() void {
+    @setFloatMode(@import("std").builtin.FloatMode.Optimized);
+    @setFloatMode(@import("std").builtin.FloatMode.Optimized);
+}
+
+// @setFloatMode twice for same scope
+//
+// tmp.zig:3:5: error: float mode set twice for same scope
+// tmp.zig:2:5: note: first set here
diff --git a/test/compile_errors/stage1/obj/setRuntimeSafety_twice_for_same_scope.zig b/test/compile_errors/stage1/obj/setRuntimeSafety_twice_for_same_scope.zig
new file mode 100644
index 0000000000..741a214cde
--- /dev/null
+++ b/test/compile_errors/stage1/obj/setRuntimeSafety_twice_for_same_scope.zig
@@ -0,0 +1,9 @@
+export fn foo() void {
+    @setRuntimeSafety(false);
+    @setRuntimeSafety(false);
+}
+
+// @setRuntimeSafety twice for same scope
+//
+// tmp.zig:3:5: error: runtime safety set twice for same scope
+// tmp.zig:2:5: note: first set here
diff --git a/test/compile_errors/stage1/obj/setting_a_section_on_a_local_variable.zig b/test/compile_errors/stage1/obj/setting_a_section_on_a_local_variable.zig
new file mode 100644
index 0000000000..eb3df0e214
--- /dev/null
+++ b/test/compile_errors/stage1/obj/setting_a_section_on_a_local_variable.zig
@@ -0,0 +1,8 @@
+export fn entry() i32 {
+    var foo: i32 linksection(".text2") = 1234;
+    return foo;
+}
+
+// setting a section on a local variable
+//
+// tmp.zig:2:30: error: cannot set section of local variable 'foo'
diff --git a/test/compile_errors/stage1/obj/shift_amount_has_to_be_an_integer_type.zig b/test/compile_errors/stage1/obj/shift_amount_has_to_be_an_integer_type.zig
new file mode 100644
index 0000000000..6e54405619
--- /dev/null
+++ b/test/compile_errors/stage1/obj/shift_amount_has_to_be_an_integer_type.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    const x = 1 << &@as(u8, 10);
+    _ = x;
+}
+
+// shift amount has to be an integer type
+//
+// tmp.zig:2:21: error: shift amount has to be an integer type, but found '*const u8'
diff --git a/test/compile_errors/stage1/obj/shift_by_negative_comptime_integer.zig b/test/compile_errors/stage1/obj/shift_by_negative_comptime_integer.zig
new file mode 100644
index 0000000000..41f0ff80aa
--- /dev/null
+++ b/test/compile_errors/stage1/obj/shift_by_negative_comptime_integer.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a = 1 >> -1;
+    _ = a;
+}
+
+// shift by negative comptime integer
+//
+// tmp.zig:2:18: error: shift by negative value -1
diff --git a/test/compile_errors/stage1/obj/shift_left_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/shift_left_assign_on_undefined_value.zig
new file mode 100644
index 0000000000..a23d0e190c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/shift_left_assign_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    a >>= 2;
+}
+
+// shift left assign on undefined value
+//
+// tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/shift_left_on_undefined_value.zig b/test/compile_errors/stage1/obj/shift_left_on_undefined_value.zig
new file mode 100644
index 0000000000..aa0891133b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/shift_left_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    _ = a << 2;
+}
+
+// shift left on undefined value
+//
+// tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/shift_right_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/shift_right_assign_on_undefined_value.zig
new file mode 100644
index 0000000000..65f4fe50b8
--- /dev/null
+++ b/test/compile_errors/stage1/obj/shift_right_assign_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    a >>= 2;
+}
+
+// shift right assign on undefined value
+//
+// tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/shift_right_on_undefined_value.zig b/test/compile_errors/stage1/obj/shift_right_on_undefined_value.zig
new file mode 100644
index 0000000000..ccd2563c84
--- /dev/null
+++ b/test/compile_errors/stage1/obj/shift_right_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    _ = a >> 2;
+}
+
+// shift right on undefined value
+//
+// tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/shifting_RHS_is_log2_of_LHS_int_bit_width.zig b/test/compile_errors/stage1/obj/shifting_RHS_is_log2_of_LHS_int_bit_width.zig
new file mode 100644
index 0000000000..8a5d6cfee4
--- /dev/null
+++ b/test/compile_errors/stage1/obj/shifting_RHS_is_log2_of_LHS_int_bit_width.zig
@@ -0,0 +1,7 @@
+export fn entry(x: u8, y: u8) u8 {
+    return x << y;
+}
+
+// shifting RHS is log2 of LHS int bit width
+//
+// tmp.zig:2:17: error: expected type 'u3', found 'u8'
diff --git a/test/compile_errors/stage1/obj/shifting_without_int_type_or_comptime_known.zig b/test/compile_errors/stage1/obj/shifting_without_int_type_or_comptime_known.zig
new file mode 100644
index 0000000000..380a08a95c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/shifting_without_int_type_or_comptime_known.zig
@@ -0,0 +1,7 @@
+export fn entry(x: u8) u8 {
+    return 0x11 << x;
+}
+
+// shifting without int type or comptime known
+//
+// tmp.zig:2:17: error: LHS of shift must be a fixed-width integer type, or RHS must be compile-time known
diff --git a/test/compile_errors/stage1/obj/shlExact_shifts_out_1_bits.zig b/test/compile_errors/stage1/obj/shlExact_shifts_out_1_bits.zig
new file mode 100644
index 0000000000..bd6e48f25c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/shlExact_shifts_out_1_bits.zig
@@ -0,0 +1,8 @@
+comptime {
+    const x = @shlExact(@as(u8, 0b01010101), 2);
+    _ = x;
+}
+
+// @shlExact shifts out 1 bits
+//
+// tmp.zig:2:15: error: operation caused overflow
diff --git a/test/compile_errors/stage1/obj/shrExact_shifts_out_1_bits.zig b/test/compile_errors/stage1/obj/shrExact_shifts_out_1_bits.zig
new file mode 100644
index 0000000000..004bf0c1c3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/shrExact_shifts_out_1_bits.zig
@@ -0,0 +1,8 @@
+comptime {
+    const x = @shrExact(@as(u8, 0b10101010), 2);
+    _ = x;
+}
+
+// @shrExact shifts out 1 bits
+//
+// tmp.zig:2:15: error: exact shift shifted out 1 bits
diff --git a/test/compile_errors/stage1/obj/signed_integer_division.zig b/test/compile_errors/stage1/obj/signed_integer_division.zig
new file mode 100644
index 0000000000..524f9fe1db
--- /dev/null
+++ b/test/compile_errors/stage1/obj/signed_integer_division.zig
@@ -0,0 +1,7 @@
+export fn foo(a: i32, b: i32) i32 {
+    return a / b;
+}
+
+// signed integer division
+//
+// tmp.zig:2:14: error: division with 'i32' and 'i32': signed integers must use @divTrunc, @divFloor, or @divExact
diff --git a/test/compile_errors/stage1/obj/signed_integer_remainder_division.zig b/test/compile_errors/stage1/obj/signed_integer_remainder_division.zig
new file mode 100644
index 0000000000..e060b780d0
--- /dev/null
+++ b/test/compile_errors/stage1/obj/signed_integer_remainder_division.zig
@@ -0,0 +1,7 @@
+export fn foo(a: i32, b: i32) i32 {
+    return a % b;
+}
+
+// signed integer remainder division
+//
+// tmp.zig:2:14: error: remainder division with 'i32' and 'i32': signed integers and floats must use @rem or @mod
diff --git a/test/compile_errors/stage1/obj/sizeOf_bad_type.zig b/test/compile_errors/stage1/obj/sizeOf_bad_type.zig
new file mode 100644
index 0000000000..1b336cf657
--- /dev/null
+++ b/test/compile_errors/stage1/obj/sizeOf_bad_type.zig
@@ -0,0 +1,7 @@
+export fn entry() usize {
+    return @sizeOf(@TypeOf(null));
+}
+
+// @sizeOf bad type
+//
+// tmp.zig:2:20: error: no size available for type '@Type(.Null)'
diff --git a/test/compile_errors/stage1/obj/slice_cannot_have_its_bytes_reinterpreted.zig b/test/compile_errors/stage1/obj/slice_cannot_have_its_bytes_reinterpreted.zig
new file mode 100644
index 0000000000..4f7670ba74
--- /dev/null
+++ b/test/compile_errors/stage1/obj/slice_cannot_have_its_bytes_reinterpreted.zig
@@ -0,0 +1,9 @@
+export fn foo() void {
+    const bytes = [1]u8{ 0xfa } ** 16;
+    var value = @ptrCast(*const []const u8, &bytes).*;
+    _ = value;
+}
+
+// slice cannot have its bytes reinterpreted
+//
+// :3:52: error: slice '[]const u8' cannot have its bytes reinterpreted
diff --git a/test/compile_errors/stage1/obj/slice_passed_as_array_init_type.zig b/test/compile_errors/stage1/obj/slice_passed_as_array_init_type.zig
new file mode 100644
index 0000000000..0d29120ca4
--- /dev/null
+++ b/test/compile_errors/stage1/obj/slice_passed_as_array_init_type.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    const x = []u8{};
+    _ = x;
+}
+
+// slice passed as array init type
+//
+// tmp.zig:2:15: error: array literal requires address-of operator (&) to coerce to slice type '[]u8'
diff --git a/test/compile_errors/stage1/obj/slice_passed_as_array_init_type_with_elems.zig b/test/compile_errors/stage1/obj/slice_passed_as_array_init_type_with_elems.zig
new file mode 100644
index 0000000000..375ed55a72
--- /dev/null
+++ b/test/compile_errors/stage1/obj/slice_passed_as_array_init_type_with_elems.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    const x = []u8{1, 2};
+    _ = x;
+}
+
+// slice passed as array init type with elems
+//
+// tmp.zig:2:15: error: array literal requires address-of operator (&) to coerce to slice type '[]u8'
diff --git a/test/compile_errors/stage1/obj/slice_sentinel_mismatch-1.zig b/test/compile_errors/stage1/obj/slice_sentinel_mismatch-1.zig
new file mode 100644
index 0000000000..1e3c2450cb
--- /dev/null
+++ b/test/compile_errors/stage1/obj/slice_sentinel_mismatch-1.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    const y: [:1]const u8 = &[_:2]u8{ 1, 2 };
+    _ = y;
+}
+
+// slice sentinel mismatch - 1
+//
+// tmp.zig:2:37: error: expected type '[:1]const u8', found '*const [2:2]u8'
diff --git a/test/compile_errors/stage1/obj/slice_sentinel_mismatch-2.zig b/test/compile_errors/stage1/obj/slice_sentinel_mismatch-2.zig
new file mode 100644
index 0000000000..f1d73eb9df
--- /dev/null
+++ b/test/compile_errors/stage1/obj/slice_sentinel_mismatch-2.zig
@@ -0,0 +1,10 @@
+fn foo() [:0]u8 {
+    var x: []u8 = undefined;
+    return x;
+}
+comptime { _ = foo; }
+
+// slice sentinel mismatch - 2
+//
+// tmp.zig:3:12: error: expected type '[:0]u8', found '[]u8'
+// tmp.zig:3:12: note: destination pointer requires a terminating '0' sentinel
diff --git a/test/compile_errors/stage1/obj/slicing_of_global_undefined_pointer.zig b/test/compile_errors/stage1/obj/slicing_of_global_undefined_pointer.zig
new file mode 100644
index 0000000000..d52bfdf6a5
--- /dev/null
+++ b/test/compile_errors/stage1/obj/slicing_of_global_undefined_pointer.zig
@@ -0,0 +1,8 @@
+var buf: *[1]u8 = undefined;
+export fn entry() void {
+    _ = buf[0..1];
+}
+
+// slicing of global undefined pointer
+//
+// tmp.zig:3:12: error: non-zero length slice of undefined pointer
diff --git a/test/compile_errors/stage1/obj/slicing_single-item_pointer.zig b/test/compile_errors/stage1/obj/slicing_single-item_pointer.zig
new file mode 100644
index 0000000000..f6bbe752b1
--- /dev/null
+++ b/test/compile_errors/stage1/obj/slicing_single-item_pointer.zig
@@ -0,0 +1,8 @@
+export fn entry(ptr: *i32) void {
+    const slice = ptr[0..2];
+    _ = slice;
+}
+
+// slicing single-item pointer
+//
+// tmp.zig:2:22: error: slice of single-item pointer
diff --git a/test/compile_errors/stage1/obj/specify_enum_tag_type_that_is_too_small.zig b/test/compile_errors/stage1/obj/specify_enum_tag_type_that_is_too_small.zig
new file mode 100644
index 0000000000..ca7c305d38
--- /dev/null
+++ b/test/compile_errors/stage1/obj/specify_enum_tag_type_that_is_too_small.zig
@@ -0,0 +1,16 @@
+const Small = enum (u2) {
+    One,
+    Two,
+    Three,
+    Four,
+    Five,
+};
+
+export fn entry() void {
+    var x = Small.One;
+    _ = x;
+}
+
+// specify enum tag type that is too small
+//
+// tmp.zig:6:5: error: enumeration value 4 too large for type 'u2'
diff --git a/test/compile_errors/stage1/obj/specify_non-integer_enum_tag_type.zig b/test/compile_errors/stage1/obj/specify_non-integer_enum_tag_type.zig
new file mode 100644
index 0000000000..095a0812c1
--- /dev/null
+++ b/test/compile_errors/stage1/obj/specify_non-integer_enum_tag_type.zig
@@ -0,0 +1,14 @@
+const Small = enum (f32) {
+    One,
+    Two,
+    Three,
+};
+
+export fn entry() void {
+    var x = Small.One;
+    _ = x;
+}
+
+// specify non-integer enum tag type
+//
+// tmp.zig:1:21: error: expected integer, found 'f32'
diff --git a/test/compile_errors/stage1/obj/src_outside_function.zig b/test/compile_errors/stage1/obj/src_outside_function.zig
new file mode 100644
index 0000000000..5359135066
--- /dev/null
+++ b/test/compile_errors/stage1/obj/src_outside_function.zig
@@ -0,0 +1,7 @@
+comptime {
+    @src();
+}
+
+// @src outside function
+//
+// tmp.zig:2:5: error: @src outside function
diff --git a/test/compile_errors/stage1/obj/store_vector_pointer_with_unknown_runtime_index.zig b/test/compile_errors/stage1/obj/store_vector_pointer_with_unknown_runtime_index.zig
new file mode 100644
index 0000000000..6ef71c863a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/store_vector_pointer_with_unknown_runtime_index.zig
@@ -0,0 +1,14 @@
+export fn entry() void {
+    var v: @import("std").meta.Vector(4, i32) = [_]i32{ 1, 5, 3, undefined };
+
+    var i: u32 = 0;
+    storev(&v[i], 42);
+}
+
+fn storev(ptr: anytype, val: i32) void {
+    ptr.* = val;
+}
+
+// store vector pointer with unknown runtime index
+//
+// tmp.zig:9:8: error: unable to determine vector element index of type '*align(16:0:4:?) i32
diff --git a/test/compile_errors/stage1/obj/storing_runtime_value_in_compile_time_variable_then_using_it.zig b/test/compile_errors/stage1/obj/storing_runtime_value_in_compile_time_variable_then_using_it.zig
new file mode 100644
index 0000000000..318db771d5
--- /dev/null
+++ b/test/compile_errors/stage1/obj/storing_runtime_value_in_compile_time_variable_then_using_it.zig
@@ -0,0 +1,47 @@
+const Mode = @import("std").builtin.Mode;
+
+fn Free(comptime filename: []const u8) TestCase {
+    return TestCase {
+        .filename = filename,
+        .problem_type = ProblemType.Free,
+    };
+}
+
+fn LibC(comptime filename: []const u8) TestCase {
+    return TestCase {
+        .filename = filename,
+        .problem_type = ProblemType.LinkLibC,
+    };
+}
+
+const TestCase = struct {
+    filename: []const u8,
+    problem_type: ProblemType,
+};
+
+const ProblemType = enum {
+    Free,
+    LinkLibC,
+};
+
+export fn entry() void {
+    const tests = [_]TestCase {
+        Free("001"),
+        Free("002"),
+        LibC("078"),
+        Free("116"),
+        Free("117"),
+    };
+
+    for ([_]Mode { Mode.Debug, Mode.ReleaseSafe, Mode.ReleaseFast }) |mode| {
+        _ = mode;
+        inline for (tests) |test_case| {
+            const foo = test_case.filename ++ ".zig";
+            _ = foo;
+        }
+    }
+}
+
+// storing runtime value in compile time variable then using it
+//
+// tmp.zig:38:29: error: cannot store runtime value in compile time variable
diff --git a/test/compile_errors/stage1/obj/struct_depends_on_itself_via_optional_field.zig b/test/compile_errors/stage1/obj/struct_depends_on_itself_via_optional_field.zig
new file mode 100644
index 0000000000..13ee95155d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/struct_depends_on_itself_via_optional_field.zig
@@ -0,0 +1,17 @@
+const LhsExpr = struct {
+    rhsExpr: ?AstObject,
+};
+const AstObject = union {
+    lhsExpr: LhsExpr,
+};
+export fn entry() void {
+    const lhsExpr = LhsExpr{ .rhsExpr = null };
+    const obj = AstObject{ .lhsExpr = lhsExpr };
+    _ = obj;
+}
+
+// struct depends on itself via optional field
+//
+// tmp.zig:1:17: error: struct 'LhsExpr' depends on itself
+// tmp.zig:5:5: note: while checking this field
+// tmp.zig:2:5: note: while checking this field
diff --git a/test/compile_errors/stage1/obj/struct_field_missing_type.zig b/test/compile_errors/stage1/obj/struct_field_missing_type.zig
new file mode 100644
index 0000000000..669718a3d4
--- /dev/null
+++ b/test/compile_errors/stage1/obj/struct_field_missing_type.zig
@@ -0,0 +1,11 @@
+const Letter = struct {
+    A,
+};
+export fn entry() void {
+    var a = Letter { .A = {} };
+    _ = a;
+}
+
+// struct field missing type
+//
+// tmp.zig:2:5: error: struct field missing type
diff --git a/test/compile_errors/stage1/obj/struct_init_syntax_for_array.zig b/test/compile_errors/stage1/obj/struct_init_syntax_for_array.zig
new file mode 100644
index 0000000000..4eda9622ab
--- /dev/null
+++ b/test/compile_errors/stage1/obj/struct_init_syntax_for_array.zig
@@ -0,0 +1,8 @@
+const foo = [3]u16{ .x = 1024 };
+comptime {
+    _ = foo;
+}
+
+// struct init syntax for array
+//
+// tmp.zig:1:13: error: initializing array with struct syntax
diff --git a/test/compile_errors/stage1/obj/struct_with_declarations_unavailable_for_reify_type.zig b/test/compile_errors/stage1/obj/struct_with_declarations_unavailable_for_reify_type.zig
new file mode 100644
index 0000000000..656a9b9f62
--- /dev/null
+++ b/test/compile_errors/stage1/obj/struct_with_declarations_unavailable_for_reify_type.zig
@@ -0,0 +1,7 @@
+export fn entry() void {
+    _ = @Type(@typeInfo(struct { const foo = 1; }));
+}
+
+// struct with declarations unavailable for @Type
+//
+// tmp.zig:2:15: error: Type.Struct.decls must be empty for @Type
diff --git a/test/compile_errors/stage1/obj/struct_with_invalid_field.zig b/test/compile_errors/stage1/obj/struct_with_invalid_field.zig
new file mode 100644
index 0000000000..a2a632fbd9
--- /dev/null
+++ b/test/compile_errors/stage1/obj/struct_with_invalid_field.zig
@@ -0,0 +1,28 @@
+const std = @import("std",);
+const Allocator = std.mem.Allocator;
+const ArrayList = std.ArrayList;
+
+const HeaderWeight = enum {
+    H1, H2, H3, H4, H5, H6,
+};
+
+const MdText = ArrayList(u8);
+
+const MdNode = union(enum) {
+    Header: struct {
+        text: MdText,
+        weight: HeaderValue,
+    },
+};
+
+export fn entry() void {
+    const a = MdNode.Header {
+        .text = MdText.init(std.testing.allocator),
+        .weight = HeaderWeight.H1,
+    };
+    _ = a;
+}
+
+// struct with invalid field
+//
+// tmp.zig:14:17: error: use of undeclared identifier 'HeaderValue'
diff --git a/test/compile_errors/stage1/obj/sub_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/sub_assign_on_undefined_value.zig
new file mode 100644
index 0000000000..01ef9313e5
--- /dev/null
+++ b/test/compile_errors/stage1/obj/sub_assign_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    a -= a;
+}
+
+// sub assign on undefined value
+//
+// tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/sub_on_undefined_value.zig b/test/compile_errors/stage1/obj/sub_on_undefined_value.zig
new file mode 100644
index 0000000000..80746abf0e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/sub_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    _ = a - a;
+}
+
+// sub on undefined value
+//
+// tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/sub_overflow_in_function_evaluation.zig b/test/compile_errors/stage1/obj/sub_overflow_in_function_evaluation.zig
new file mode 100644
index 0000000000..1084f1a111
--- /dev/null
+++ b/test/compile_errors/stage1/obj/sub_overflow_in_function_evaluation.zig
@@ -0,0 +1,10 @@
+const y = sub(10, 20);
+fn sub(a: u16, b: u16) u16 {
+    return a - b;
+}
+
+export fn entry() usize { return @sizeOf(@TypeOf(y)); }
+
+// sub overflow in function evaluation
+//
+// tmp.zig:3:14: error: operation caused overflow
diff --git a/test/compile_errors/stage1/obj/sub_wrap_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/sub_wrap_assign_on_undefined_value.zig
new file mode 100644
index 0000000000..3c7fd4faa5
--- /dev/null
+++ b/test/compile_errors/stage1/obj/sub_wrap_assign_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    a -%= a;
+}
+
+// sub wrap assign on undefined value
+//
+// tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/sub_wrap_on_undefined_value.zig b/test/compile_errors/stage1/obj/sub_wrap_on_undefined_value.zig
new file mode 100644
index 0000000000..367b4c9c0e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/sub_wrap_on_undefined_value.zig
@@ -0,0 +1,8 @@
+comptime {
+    var a: i64 = undefined;
+    _ = a -% a;
+}
+
+// sub wrap on undefined value
+//
+// tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/suspend_inside_suspend_block.zig b/test/compile_errors/stage1/obj/suspend_inside_suspend_block.zig
new file mode 100644
index 0000000000..2e807268ce
--- /dev/null
+++ b/test/compile_errors/stage1/obj/suspend_inside_suspend_block.zig
@@ -0,0 +1,14 @@
+export fn entry() void {
+    _ = async foo();
+}
+fn foo() void {
+    suspend {
+        suspend {
+        }
+    }
+}
+
+// suspend inside suspend block
+//
+// tmp.zig:6:9: error: cannot suspend inside suspend block
+// tmp.zig:5:5: note: other suspend block here
diff --git a/test/compile_errors/stage1/obj/switch_expression-duplicate_enumeration_prong.zig b/test/compile_errors/stage1/obj/switch_expression-duplicate_enumeration_prong.zig
new file mode 100644
index 0000000000..c5db39f5b2
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_expression-duplicate_enumeration_prong.zig
@@ -0,0 +1,22 @@
+const Number = enum {
+    One,
+    Two,
+    Three,
+    Four,
+};
+fn f(n: Number) i32 {
+    switch (n) {
+        Number.One => 1,
+        Number.Two => 2,
+        Number.Three => @as(i32, 3),
+        Number.Four => 4,
+        Number.Two => 2,
+    }
+}
+
+export fn entry() usize { return @sizeOf(@TypeOf(f)); }
+
+// switch expression - duplicate enumeration prong
+//
+// tmp.zig:13:15: error: duplicate switch value
+// tmp.zig:10:15: note: other value here
diff --git a/test/compile_errors/stage1/obj/switch_expression-duplicate_enumeration_prong_when_else_present.zig b/test/compile_errors/stage1/obj/switch_expression-duplicate_enumeration_prong_when_else_present.zig
new file mode 100644
index 0000000000..22a0c189c1
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_expression-duplicate_enumeration_prong_when_else_present.zig
@@ -0,0 +1,23 @@
+const Number = enum {
+    One,
+    Two,
+    Three,
+    Four,
+};
+fn f(n: Number) i32 {
+    switch (n) {
+        Number.One => 1,
+        Number.Two => 2,
+        Number.Three => @as(i32, 3),
+        Number.Four => 4,
+        Number.Two => 2,
+        else => 10,
+    }
+}
+
+export fn entry() usize { return @sizeOf(@TypeOf(f)); }
+
+// switch expression - duplicate enumeration prong when else present
+//
+// tmp.zig:13:15: error: duplicate switch value
+// tmp.zig:10:15: note: other value here
diff --git a/test/compile_errors/stage1/obj/switch_expression-duplicate_or_overlapping_integer_value.zig b/test/compile_errors/stage1/obj/switch_expression-duplicate_or_overlapping_integer_value.zig
new file mode 100644
index 0000000000..06ef7de62e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_expression-duplicate_or_overlapping_integer_value.zig
@@ -0,0 +1,14 @@
+fn foo(x: u8) u8 {
+    return switch (x) {
+        0 ... 100 => @as(u8, 0),
+        101 ... 200 => 1,
+        201, 203 ... 207 => 2,
+        206 ... 255 => 3,
+    };
+}
+export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
+
+// switch expression - duplicate or overlapping integer value
+//
+// tmp.zig:6:9: error: duplicate switch value
+// tmp.zig:5:14: note: previous value here
diff --git a/test/compile_errors/stage1/obj/switch_expression-duplicate_type.zig b/test/compile_errors/stage1/obj/switch_expression-duplicate_type.zig
new file mode 100644
index 0000000000..9ac9feaeaf
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_expression-duplicate_type.zig
@@ -0,0 +1,15 @@
+fn foo(comptime T: type, x: T) u8 {
+    _ = x;
+    return switch (T) {
+        u32 => 0,
+        u64 => 1,
+        u32 => 2,
+        else => 3,
+    };
+}
+export fn entry() usize { return @sizeOf(@TypeOf(foo(u32, 0))); }
+
+// switch expression - duplicate type
+//
+// tmp.zig:6:9: error: duplicate switch value
+// tmp.zig:4:9: note: previous value here
diff --git a/test/compile_errors/stage1/obj/switch_expression-duplicate_type_struct_alias.zig b/test/compile_errors/stage1/obj/switch_expression-duplicate_type_struct_alias.zig
new file mode 100644
index 0000000000..b92336cac5
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_expression-duplicate_type_struct_alias.zig
@@ -0,0 +1,19 @@
+const Test = struct {
+    bar: i32,
+};
+const Test2 = Test;
+fn foo(comptime T: type, x: T) u8 {
+    _ = x;
+    return switch (T) {
+        Test => 0,
+        u64 => 1,
+        Test2 => 2,
+        else => 3,
+    };
+}
+export fn entry() usize { return @sizeOf(@TypeOf(foo(u32, 0))); }
+
+// switch expression - duplicate type (struct alias)
+//
+// tmp.zig:10:9: error: duplicate switch value
+// tmp.zig:8:9: note: previous value here
diff --git a/test/compile_errors/stage1/obj/switch_expression-missing_enumeration_prong.zig b/test/compile_errors/stage1/obj/switch_expression-missing_enumeration_prong.zig
new file mode 100644
index 0000000000..b6cd60c22b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_expression-missing_enumeration_prong.zig
@@ -0,0 +1,19 @@
+const Number = enum {
+    One,
+    Two,
+    Three,
+    Four,
+};
+fn f(n: Number) i32 {
+    switch (n) {
+        Number.One => 1,
+        Number.Two => 2,
+        Number.Three => @as(i32, 3),
+    }
+}
+
+export fn entry() usize { return @sizeOf(@TypeOf(f)); }
+
+// switch expression - missing enumeration prong
+//
+// tmp.zig:8:5: error: enumeration value 'Number.Four' not handled in switch
diff --git a/test/compile_errors/stage1/obj/switch_expression-multiple_else_prongs.zig b/test/compile_errors/stage1/obj/switch_expression-multiple_else_prongs.zig
new file mode 100644
index 0000000000..6a7e274b56
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_expression-multiple_else_prongs.zig
@@ -0,0 +1,14 @@
+fn f(x: u32) void {
+    const value: bool = switch (x) {
+        1234 => false,
+        else => true,
+        else => true,
+    };
+}
+export fn entry() void {
+    f(1234);
+}
+
+// switch expression - multiple else prongs
+//
+// tmp.zig:5:9: error: multiple else prongs in switch expression
diff --git a/test/compile_errors/stage1/obj/switch_expression-non_exhaustive_integer_prongs.zig b/test/compile_errors/stage1/obj/switch_expression-non_exhaustive_integer_prongs.zig
new file mode 100644
index 0000000000..88fb8548de
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_expression-non_exhaustive_integer_prongs.zig
@@ -0,0 +1,10 @@
+fn foo(x: u8) void {
+    switch (x) {
+        0 => {},
+    }
+}
+export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
+
+// switch expression - non exhaustive integer prongs
+//
+// tmp.zig:2:5: error: switch must handle all possibilities
diff --git a/test/compile_errors/stage1/obj/switch_expression-switch_on_pointer_type_with_no_else.zig b/test/compile_errors/stage1/obj/switch_expression-switch_on_pointer_type_with_no_else.zig
new file mode 100644
index 0000000000..ec7565b882
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_expression-switch_on_pointer_type_with_no_else.zig
@@ -0,0 +1,11 @@
+fn foo(x: *u8) void {
+    switch (x) {
+        &y => {},
+    }
+}
+const y: u8 = 100;
+export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
+
+// switch expression - switch on pointer type with no else
+//
+// tmp.zig:2:5: error: else prong required when switching on type '*u8'
diff --git a/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_bool.zig b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_bool.zig
new file mode 100644
index 0000000000..8c36a3c289
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_bool.zig
@@ -0,0 +1,12 @@
+fn foo(x: bool) void {
+    switch (x) {
+        true => {},
+        false => {},
+        else => {},
+    }
+}
+export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
+
+// switch expression - unreachable else prong (bool)
+//
+// tmp.zig:5:9: error: unreachable else prong, all cases already handled
diff --git a/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_enum.zig b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_enum.zig
new file mode 100644
index 0000000000..8207d05234
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_enum.zig
@@ -0,0 +1,22 @@
+const TestEnum = enum{ T1, T2 };
+
+fn err(x: u8) TestEnum {
+    switch (x) {
+        0 => return TestEnum.T1,
+        else => return TestEnum.T2,
+    }
+}
+
+fn foo(x: u8) void {
+    switch (err(x)) {
+        TestEnum.T1 => {},
+        TestEnum.T2 => {},
+        else => {},
+    }
+}
+
+export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
+
+// switch expression - unreachable else prong (enum)
+//
+// tmp.zig:14:9: error: unreachable else prong, all cases already handled
diff --git a/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_range_i8.zig b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_range_i8.zig
new file mode 100644
index 0000000000..8750e57fae
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_range_i8.zig
@@ -0,0 +1,15 @@
+fn foo(x: i8) void {
+    switch (x) {
+        -128...0 => {},
+        1 => {},
+        2 => {},
+        3 => {},
+        4...127 => {},
+        else => {},
+    }
+}
+export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
+
+// switch expression - unreachable else prong (range i8)
+//
+// tmp.zig:8:9: error: unreachable else prong, all cases already handled
diff --git a/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_range_u8.zig b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_range_u8.zig
new file mode 100644
index 0000000000..280663ae51
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_range_u8.zig
@@ -0,0 +1,15 @@
+fn foo(x: u8) void {
+    switch (x) {
+        0 => {},
+        1 => {},
+        2 => {},
+        3 => {},
+        4...255 => {},
+        else => {},
+    }
+}
+export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
+
+// switch expression - unreachable else prong (range u8)
+//
+// tmp.zig:8:9: error: unreachable else prong, all cases already handled
diff --git a/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_u1.zig b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_u1.zig
new file mode 100644
index 0000000000..58c4f378bf
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_u1.zig
@@ -0,0 +1,12 @@
+fn foo(x: u1) void {
+    switch (x) {
+        0 => {},
+        1 => {},
+        else => {},
+    }
+}
+export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
+
+// switch expression - unreachable else prong (u1)
+//
+// tmp.zig:5:9: error: unreachable else prong, all cases already handled
diff --git a/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_u2.zig b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_u2.zig
new file mode 100644
index 0000000000..ec1804316e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_u2.zig
@@ -0,0 +1,14 @@
+fn foo(x: u2) void {
+    switch (x) {
+        0 => {},
+        1 => {},
+        2 => {},
+        3 => {},
+        else => {},
+    }
+}
+export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
+
+// switch expression - unreachable else prong (u2)
+//
+// tmp.zig:7:9: error: unreachable else prong, all cases already handled
diff --git a/test/compile_errors/stage1/obj/switch_on_enum_with_1_field_with_no_prongs.zig b/test/compile_errors/stage1/obj/switch_on_enum_with_1_field_with_no_prongs.zig
new file mode 100644
index 0000000000..fbfc039f59
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_on_enum_with_1_field_with_no_prongs.zig
@@ -0,0 +1,10 @@
+const Foo = enum { M };
+
+export fn entry() void {
+    var f = Foo.M;
+    switch (f) {}
+}
+
+// switch on enum with 1 field with no prongs
+//
+// tmp.zig:5:5: error: enumeration value 'Foo.M' not handled in switch
diff --git a/test/compile_errors/stage1/obj/switch_on_union_with_no_attached_enum.zig b/test/compile_errors/stage1/obj/switch_on_union_with_no_attached_enum.zig
new file mode 100644
index 0000000000..f1ae750b4b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_on_union_with_no_attached_enum.zig
@@ -0,0 +1,20 @@
+const Payload = union {
+    A: i32,
+    B: f64,
+    C: bool,
+};
+export fn entry() void {
+    const a = Payload { .A = 1234 };
+    foo(a);
+}
+fn foo(a: *const Payload) void {
+    switch (a.*) {
+        Payload.A => {},
+        else => unreachable,
+    }
+}
+
+// switch on union with no attached enum
+//
+// tmp.zig:11:14: error: switch on union which has no attached enum
+// tmp.zig:1:17: note: consider 'union(enum)' here
diff --git a/test/compile_errors/stage1/obj/switch_with_invalid_expression_parameter.zig b/test/compile_errors/stage1/obj/switch_with_invalid_expression_parameter.zig
new file mode 100644
index 0000000000..f65879bc7a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_with_invalid_expression_parameter.zig
@@ -0,0 +1,15 @@
+export fn entry() void {
+    Test(i32);
+}
+fn Test(comptime T: type) void {
+    const x = switch (T) {
+        []u8 => |x| x,
+        i32 => |x| x,
+        else => unreachable,
+    };
+    _ = x;
+}
+
+// switch with invalid expression parameter
+//
+// tmp.zig:7:17: error: switch on type 'type' provides no expression parameter
diff --git a/test/compile_errors/stage1/obj/switch_with_overlapping_case_ranges.zig b/test/compile_errors/stage1/obj/switch_with_overlapping_case_ranges.zig
new file mode 100644
index 0000000000..2818d766a7
--- /dev/null
+++ b/test/compile_errors/stage1/obj/switch_with_overlapping_case_ranges.zig
@@ -0,0 +1,11 @@
+export fn entry() void {
+    var q: u8 = 0;
+    switch (q) {
+        1...2 => {},
+        0...255 => {},
+    }
+}
+
+// switch with overlapping case ranges
+//
+// tmp.zig:5:9: error: duplicate switch value
diff --git a/test/compile_errors/stage1/obj/tagName_used_on_union_with_no_associated_enum_tag.zig b/test/compile_errors/stage1/obj/tagName_used_on_union_with_no_associated_enum_tag.zig
new file mode 100644
index 0000000000..bd03a97cfd
--- /dev/null
+++ b/test/compile_errors/stage1/obj/tagName_used_on_union_with_no_associated_enum_tag.zig
@@ -0,0 +1,14 @@
+const FloatInt = extern union {
+    Float: f32,
+    Int: i32,
+};
+export fn entry() void {
+    var fi = FloatInt{.Float = 123.45};
+    var tagName = @tagName(fi);
+    _ = tagName;
+}
+
+// @tagName used on union with no associated enum tag
+//
+// tmp.zig:7:19: error: union has no associated enum
+// tmp.zig:1:18: note: declared here
diff --git a/test/compile_errors/stage1/obj/take_slice_of_invalid_dereference.zig b/test/compile_errors/stage1/obj/take_slice_of_invalid_dereference.zig
new file mode 100644
index 0000000000..9beda30e2f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/take_slice_of_invalid_dereference.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    const x = 'a'.*[0..];
+    _ = x;
+}
+
+// take slice of invalid dereference
+//
+// tmp.zig:2:18: error: attempt to dereference non-pointer type 'comptime_int'
diff --git a/test/compile_errors/stage1/obj/taking_bit_offset_of_void_field_in_struct.zig b/test/compile_errors/stage1/obj/taking_bit_offset_of_void_field_in_struct.zig
new file mode 100644
index 0000000000..936a110a61
--- /dev/null
+++ b/test/compile_errors/stage1/obj/taking_bit_offset_of_void_field_in_struct.zig
@@ -0,0 +1,11 @@
+const Empty = struct {
+    val: void,
+};
+export fn foo() void {
+    const fieldOffset = @bitOffsetOf(Empty, "val",);
+    _ = fieldOffset;
+}
+
+// taking bit offset of void field in struct
+//
+// tmp.zig:5:45: error: zero-bit field 'val' in struct 'Empty' has no offset
diff --git a/test/compile_errors/stage1/obj/taking_byte_offset_of_void_field_in_struct.zig b/test/compile_errors/stage1/obj/taking_byte_offset_of_void_field_in_struct.zig
new file mode 100644
index 0000000000..d71dbc1502
--- /dev/null
+++ b/test/compile_errors/stage1/obj/taking_byte_offset_of_void_field_in_struct.zig
@@ -0,0 +1,11 @@
+const Empty = struct {
+    val: void,
+};
+export fn foo() void {
+    const fieldOffset = @offsetOf(Empty, "val",);
+    _ = fieldOffset;
+}
+
+// taking byte offset of void field in struct
+//
+// tmp.zig:5:42: error: zero-bit field 'val' in struct 'Empty' has no offset
diff --git a/test/compile_errors/stage1/obj/threadlocal_qualifier_on_const.zig b/test/compile_errors/stage1/obj/threadlocal_qualifier_on_const.zig
new file mode 100644
index 0000000000..fa99e592ae
--- /dev/null
+++ b/test/compile_errors/stage1/obj/threadlocal_qualifier_on_const.zig
@@ -0,0 +1,8 @@
+threadlocal const x: i32 = 1234;
+export fn entry() i32 {
+    return x;
+}
+
+// threadlocal qualifier on const
+//
+// tmp.zig:1:1: error: threadlocal variable cannot be constant
diff --git a/test/compile_errors/stage1/obj/top_level_decl_dependency_loop.zig b/test/compile_errors/stage1/obj/top_level_decl_dependency_loop.zig
new file mode 100644
index 0000000000..4ecdc6f67d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/top_level_decl_dependency_loop.zig
@@ -0,0 +1,10 @@
+const a : @TypeOf(b) = 0;
+const b : @TypeOf(a) = 0;
+export fn entry() void {
+    const c = a + b;
+    _ = c;
+}
+
+// top level decl dependency loop
+//
+// tmp.zig:2:19: error: dependency loop detected
diff --git a/test/compile_errors/stage1/obj/truncate_sign_mismatch.zig b/test/compile_errors/stage1/obj/truncate_sign_mismatch.zig
new file mode 100644
index 0000000000..a60ca4bc7a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/truncate_sign_mismatch.zig
@@ -0,0 +1,23 @@
+export fn entry1() i8 {
+    var x: u32 = 10;
+    return @truncate(i8, x);
+}
+export fn entry2() u8 {
+    var x: i32 = -10;
+    return @truncate(u8, x);
+}
+export fn entry3() i8 {
+    comptime var x: u32 = 10;
+    return @truncate(i8, x);
+}
+export fn entry4() u8 {
+    comptime var x: i32 = -10;
+    return @truncate(u8, x);
+}
+
+// truncate sign mismatch
+//
+// tmp.zig:3:26: error: expected signed integer type, found 'u32'
+// tmp.zig:7:26: error: expected unsigned integer type, found 'i32'
+// tmp.zig:11:26: error: expected signed integer type, found 'u32'
+// tmp.zig:15:26: error: expected unsigned integer type, found 'i32'
diff --git a/test/compile_errors/stage1/obj/truncate_undefined_value.zig b/test/compile_errors/stage1/obj/truncate_undefined_value.zig
new file mode 100644
index 0000000000..9d3913f9c3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/truncate_undefined_value.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    var z = @truncate(u8, @as(u16, undefined));
+    _ = z;
+}
+
+// @truncate undefined value
+//
+// tmp.zig:2:27: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/try_in_function_with_non_error_return_type.zig b/test/compile_errors/stage1/obj/try_in_function_with_non_error_return_type.zig
new file mode 100644
index 0000000000..d799f769b6
--- /dev/null
+++ b/test/compile_errors/stage1/obj/try_in_function_with_non_error_return_type.zig
@@ -0,0 +1,8 @@
+export fn f() void {
+    try something();
+}
+fn something() anyerror!void { }
+
+// try in function with non error return type
+//
+// tmp.zig:2:5: error: expected type 'void', found 'anyerror'
diff --git a/test/compile_errors/stage1/obj/type_checking_function_pointers.zig b/test/compile_errors/stage1/obj/type_checking_function_pointers.zig
new file mode 100644
index 0000000000..d9bcde6bab
--- /dev/null
+++ b/test/compile_errors/stage1/obj/type_checking_function_pointers.zig
@@ -0,0 +1,11 @@
+fn a(b: fn (*const u8) void) void {
+    b('a');
+}
+fn c(d: u8) void {_ = d;}
+export fn entry() void {
+    a(c);
+}
+
+// type checking function pointers
+//
+// tmp.zig:6:7: error: expected type 'fn(*const u8) void', found 'fn(u8) void'
diff --git a/test/compile_errors/stage1/obj/type_variables_must_be_constant.zig b/test/compile_errors/stage1/obj/type_variables_must_be_constant.zig
new file mode 100644
index 0000000000..33846d6da8
--- /dev/null
+++ b/test/compile_errors/stage1/obj/type_variables_must_be_constant.zig
@@ -0,0 +1,8 @@
+var foo = u8;
+export fn entry() foo {
+    return 1;
+}
+
+// type variables must be constant
+//
+// tmp.zig:1:1: error: variable of type 'type' must be constant
diff --git a/test/compile_errors/stage1/obj/undeclared_identifier.zig b/test/compile_errors/stage1/obj/undeclared_identifier.zig
new file mode 100644
index 0000000000..36f46a22f4
--- /dev/null
+++ b/test/compile_errors/stage1/obj/undeclared_identifier.zig
@@ -0,0 +1,9 @@
+export fn a() void {
+    return
+    b +
+    c;
+}
+
+// undeclared identifier
+//
+// tmp.zig:3:5: error: use of undeclared identifier 'b'
diff --git a/test/compile_errors/stage1/obj/undeclared_identifier_error_should_mark_fn_as_impure.zig b/test/compile_errors/stage1/obj/undeclared_identifier_error_should_mark_fn_as_impure.zig
new file mode 100644
index 0000000000..fa629bdcb8
--- /dev/null
+++ b/test/compile_errors/stage1/obj/undeclared_identifier_error_should_mark_fn_as_impure.zig
@@ -0,0 +1,10 @@
+export fn foo() void {
+    test_a_thing();
+}
+fn test_a_thing() void {
+    bad_fn_call();
+}
+
+// undeclared identifier error should mark fn as impure
+//
+// tmp.zig:5:5: error: use of undeclared identifier 'bad_fn_call'
diff --git a/test/compile_errors/stage1/obj/undeclared_identifier_in_unanalyzed_branch.zig b/test/compile_errors/stage1/obj/undeclared_identifier_in_unanalyzed_branch.zig
new file mode 100644
index 0000000000..55d952e0fd
--- /dev/null
+++ b/test/compile_errors/stage1/obj/undeclared_identifier_in_unanalyzed_branch.zig
@@ -0,0 +1,9 @@
+export fn a() void {
+    if (false) {
+        lol_this_doesnt_exist = nonsense;
+    }
+}
+
+// undeclared identifier in unanalyzed branch
+//
+// tmp.zig:3:9: error: use of undeclared identifier 'lol_this_doesnt_exist'
diff --git a/test/compile_errors/stage1/obj/undefined_as_field_type_is_rejected.zig b/test/compile_errors/stage1/obj/undefined_as_field_type_is_rejected.zig
new file mode 100644
index 0000000000..4035955387
--- /dev/null
+++ b/test/compile_errors/stage1/obj/undefined_as_field_type_is_rejected.zig
@@ -0,0 +1,11 @@
+const Foo = struct {
+    a: undefined,
+};
+export fn entry1() void {
+    const foo: Foo = undefined;
+    _ = foo;
+}
+
+// undefined as field type is rejected
+//
+// tmp.zig:2:8: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/undefined_function_call.zig b/test/compile_errors/stage1/obj/undefined_function_call.zig
new file mode 100644
index 0000000000..ebf76aafbd
--- /dev/null
+++ b/test/compile_errors/stage1/obj/undefined_function_call.zig
@@ -0,0 +1,7 @@
+export fn a() void {
+    b();
+}
+
+// undefined function call
+//
+// tmp.zig:2:5: error: use of undeclared identifier 'b'
diff --git a/test/compile_errors/stage1/obj/underscore_is_not_a_declarable_symbol.zig b/test/compile_errors/stage1/obj/underscore_is_not_a_declarable_symbol.zig
new file mode 100644
index 0000000000..bfcfbc3bcc
--- /dev/null
+++ b/test/compile_errors/stage1/obj/underscore_is_not_a_declarable_symbol.zig
@@ -0,0 +1,8 @@
+export fn f1() usize {
+    var _: usize = 2;
+    return _;
+}
+
+// `_` is not a declarable symbol
+//
+// tmp.zig:2:9: error: '_' used as an identifier without @"_" syntax
diff --git a/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_for.zig b/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_for.zig
new file mode 100644
index 0000000000..be2ae559f3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_for.zig
@@ -0,0 +1,11 @@
+export fn returns() void {
+    for ([_]void{}) |_, i| {
+        for ([_]void{}) |_, j| {
+            return _;
+        }
+    }
+}
+
+// `_` should not be usable inside for
+//
+// tmp.zig:4:20: error: '_' used as an identifier without @"_" syntax
diff --git a/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_while.zig b/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_while.zig
new file mode 100644
index 0000000000..d93ed28c9e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_while.zig
@@ -0,0 +1,14 @@
+export fn returns() void {
+    while (optionalReturn()) |_| {
+        while (optionalReturn()) |_| {
+            return _;
+        }
+    }
+}
+fn optionalReturn() ?u32 {
+    return 1;
+}
+
+// `_` should not be usable inside while
+//
+// tmp.zig:4:20: error: '_' used as an identifier without @"_" syntax
diff --git a/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_while_else.zig b/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_while_else.zig
new file mode 100644
index 0000000000..e1e4c7b4c1
--- /dev/null
+++ b/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_while_else.zig
@@ -0,0 +1,16 @@
+export fn returns() void {
+    while (optionalReturnError()) |_| {
+        while (optionalReturnError()) |_| {
+            return;
+        } else |_| {
+            if (_ == error.optionalReturnError) return;
+        }
+    }
+}
+fn optionalReturnError() !?u32 {
+    return error.optionalReturnError;
+}
+
+// `_` should not be usable inside while else
+//
+// tmp.zig:6:17: error: '_' used as an identifier without @"_" syntax
diff --git a/test/compile_errors/stage1/obj/union_auto-enum_value_already_taken.zig b/test/compile_errors/stage1/obj/union_auto-enum_value_already_taken.zig
new file mode 100644
index 0000000000..377290bd7e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/union_auto-enum_value_already_taken.zig
@@ -0,0 +1,16 @@
+const MultipleChoice = union(enum(u32)) {
+    A = 20,
+    B = 40,
+    C = 60,
+    D = 1000,
+    E = 60,
+};
+export fn entry() void {
+    var x = MultipleChoice { .C = {} };
+    _ = x;
+}
+
+// union auto-enum value already taken
+//
+// tmp.zig:6:9: error: enum tag value 60 already taken
+// tmp.zig:4:9: note: other occurrence here
diff --git a/test/compile_errors/stage1/obj/union_enum_field_does_not_match_enum.zig b/test/compile_errors/stage1/obj/union_enum_field_does_not_match_enum.zig
new file mode 100644
index 0000000000..a924932c9f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/union_enum_field_does_not_match_enum.zig
@@ -0,0 +1,20 @@
+const Letter = enum {
+    A,
+    B,
+    C,
+};
+const Payload = union(Letter) {
+    A: i32,
+    B: f64,
+    C: bool,
+    D: bool,
+};
+export fn entry() void {
+    var a = Payload {.A = 1234};
+    _ = a;
+}
+
+// union enum field does not match enum
+//
+// tmp.zig:10:5: error: enum field not found: 'D'
+// tmp.zig:1:16: note: enum declared here
diff --git a/test/compile_errors/stage1/obj/union_fields_with_value_assignments.zig b/test/compile_errors/stage1/obj/union_fields_with_value_assignments.zig
new file mode 100644
index 0000000000..0cf67a0eca
--- /dev/null
+++ b/test/compile_errors/stage1/obj/union_fields_with_value_assignments.zig
@@ -0,0 +1,12 @@
+const MultipleChoice = union {
+    A: i32 = 20,
+};
+export fn entry() void {
+    var x: MultipleChoice = undefined;
+    _ = x;
+}
+
+// union fields with value assignments
+//
+// tmp.zig:1:24: error: explicitly valued tagged union missing integer tag type
+// tmp.zig:2:14: note: tag value specified here
diff --git a/test/compile_errors/stage1/obj/union_with_0_fields.zig b/test/compile_errors/stage1/obj/union_with_0_fields.zig
new file mode 100644
index 0000000000..36086e8cce
--- /dev/null
+++ b/test/compile_errors/stage1/obj/union_with_0_fields.zig
@@ -0,0 +1,5 @@
+const Foo = union {};
+
+// union with 0 fields
+//
+// tmp.zig:1:13: error: union declarations must have at least one tag
diff --git a/test/compile_errors/stage1/obj/union_with_specified_enum_omits_field.zig b/test/compile_errors/stage1/obj/union_with_specified_enum_omits_field.zig
new file mode 100644
index 0000000000..c1c1d38f02
--- /dev/null
+++ b/test/compile_errors/stage1/obj/union_with_specified_enum_omits_field.zig
@@ -0,0 +1,17 @@
+const Letter = enum {
+    A,
+    B,
+    C,
+};
+const Payload = union(Letter) {
+    A: i32,
+    B: f64,
+};
+export fn entry() usize {
+    return @sizeOf(Payload);
+}
+
+// union with specified enum omits field
+//
+// tmp.zig:6:17: error: enum field missing: 'C'
+// tmp.zig:4:5: note: declared here
diff --git a/test/compile_errors/stage1/obj/union_with_too_small_explicit_signed_tag_type.zig b/test/compile_errors/stage1/obj/union_with_too_small_explicit_signed_tag_type.zig
new file mode 100644
index 0000000000..a3e75c25f6
--- /dev/null
+++ b/test/compile_errors/stage1/obj/union_with_too_small_explicit_signed_tag_type.zig
@@ -0,0 +1,14 @@
+const U = union(enum(i2)) {
+    A: u8,
+    B: u8,
+    C: u8,
+    D: u8,
+};
+export fn entry() void {
+    _ = U{ .D = 1 };
+}
+
+// union with too small explicit signed tag type
+//
+// tmp.zig:1:22: error: specified integer tag type cannot represent every field
+// tmp.zig:1:22: note: type i2 cannot fit values in range 0...3
diff --git a/test/compile_errors/stage1/obj/union_with_too_small_explicit_unsigned_tag_type.zig b/test/compile_errors/stage1/obj/union_with_too_small_explicit_unsigned_tag_type.zig
new file mode 100644
index 0000000000..6f13dcda8a
--- /dev/null
+++ b/test/compile_errors/stage1/obj/union_with_too_small_explicit_unsigned_tag_type.zig
@@ -0,0 +1,15 @@
+const U = union(enum(u2)) {
+    A: u8,
+    B: u8,
+    C: u8,
+    D: u8,
+    E: u8,
+};
+export fn entry() void {
+    _ = U{ .E = 1 };
+}
+
+// union with too small explicit unsigned tag type
+//
+// tmp.zig:1:22: error: specified integer tag type cannot represent every field
+// tmp.zig:1:22: note: type u2 cannot fit values in range 0...4
diff --git a/test/compile_errors/stage1/obj/unknown_length_pointer_to_opaque.zig b/test/compile_errors/stage1/obj/unknown_length_pointer_to_opaque.zig
new file mode 100644
index 0000000000..a847bae599
--- /dev/null
+++ b/test/compile_errors/stage1/obj/unknown_length_pointer_to_opaque.zig
@@ -0,0 +1,5 @@
+export const T = [*]opaque {};
+
+// unknown length pointer to opaque
+//
+// tmp.zig:1:21: error: unknown-length pointer to opaque
diff --git a/test/compile_errors/stage1/obj/unreachable_code-double_break.zig b/test/compile_errors/stage1/obj/unreachable_code-double_break.zig
new file mode 100644
index 0000000000..b030c1d24d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/unreachable_code-double_break.zig
@@ -0,0 +1,10 @@
+export fn a() void {
+    const b = blk: {
+        break :blk break :blk @as(u32, 1);
+    };
+}
+
+// unreachable code - double break
+//
+// tmp.zig:3:9: error: unreachable code
+// tmp.zig:3:20: note: control flow is diverted here
diff --git a/test/compile_errors/stage1/obj/unreachable_code-nested_returns.zig b/test/compile_errors/stage1/obj/unreachable_code-nested_returns.zig
new file mode 100644
index 0000000000..7bfa8eef64
--- /dev/null
+++ b/test/compile_errors/stage1/obj/unreachable_code-nested_returns.zig
@@ -0,0 +1,8 @@
+export fn a() i32 {
+    return return 1;
+}
+
+// unreachable code - nested returns
+//
+// tmp.zig:2:5: error: unreachable code
+// tmp.zig:2:12: note: control flow is diverted here
diff --git a/test/compile_errors/stage1/obj/unreachable_code.zig b/test/compile_errors/stage1/obj/unreachable_code.zig
new file mode 100644
index 0000000000..779cd90379
--- /dev/null
+++ b/test/compile_errors/stage1/obj/unreachable_code.zig
@@ -0,0 +1,11 @@
+export fn a() void {
+    return;
+    b();
+}
+
+fn b() void {}
+
+// unreachable code
+//
+// tmp.zig:3:6: error: unreachable code
+// tmp.zig:2:5: note: control flow is diverted here
diff --git a/test/compile_errors/stage1/obj/unreachable_executed_at_comptime.zig b/test/compile_errors/stage1/obj/unreachable_executed_at_comptime.zig
new file mode 100644
index 0000000000..857ab0417f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/unreachable_executed_at_comptime.zig
@@ -0,0 +1,14 @@
+fn foo(comptime x: i32) i32 {
+    comptime {
+        if (x >= 0) return -x;
+        unreachable;
+    }
+}
+export fn entry() void {
+    _ = foo(-42);
+}
+
+// unreachable executed at comptime
+//
+// tmp.zig:4:9: error: reached unreachable code
+// tmp.zig:8:12: note: called from here
diff --git a/test/compile_errors/stage1/obj/unreachable_parameter.zig b/test/compile_errors/stage1/obj/unreachable_parameter.zig
new file mode 100644
index 0000000000..3feed62a1e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/unreachable_parameter.zig
@@ -0,0 +1,6 @@
+fn f(a: noreturn) void { _ = a; }
+export fn entry() void { f(); }
+
+// unreachable parameter
+//
+// tmp.zig:1:9: error: parameter of type 'noreturn' not allowed
diff --git a/test/compile_errors/stage1/obj/unreachable_variable.zig b/test/compile_errors/stage1/obj/unreachable_variable.zig
new file mode 100644
index 0000000000..8e053acd06
--- /dev/null
+++ b/test/compile_errors/stage1/obj/unreachable_variable.zig
@@ -0,0 +1,8 @@
+export fn f() void {
+    const a: noreturn = {};
+    _ = a;
+}
+
+// unreachable variable
+//
+// tmp.zig:2:25: error: expected type 'noreturn', found 'void'
diff --git a/test/compile_errors/stage1/obj/unreachable_with_return.zig b/test/compile_errors/stage1/obj/unreachable_with_return.zig
new file mode 100644
index 0000000000..ac9ecc93e3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/unreachable_with_return.zig
@@ -0,0 +1,6 @@
+fn a() noreturn {return;}
+export fn entry() void { a(); }
+
+// unreachable with return
+//
+// tmp.zig:1:18: error: expected type 'noreturn', found 'void'
diff --git a/test/compile_errors/stage1/obj/unsupported_modifier_at_start_of_asm_output_constraint.zig b/test/compile_errors/stage1/obj/unsupported_modifier_at_start_of_asm_output_constraint.zig
new file mode 100644
index 0000000000..c85850a61b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/unsupported_modifier_at_start_of_asm_output_constraint.zig
@@ -0,0 +1,8 @@
+export fn foo() void {
+    var bar: u32 = 3;
+    asm volatile ("" : [baz]"+r"(bar) : : "");
+}
+
+// unsupported modifier at start of asm output constraint
+//
+// tmp.zig:3:5: error: invalid modifier starting output constraint for 'baz': '+', only '=' is supported. Compiler TODO: see https://github.com/ziglang/zig/issues/215
diff --git a/test/compile_errors/stage1/obj/use_anyopaque_as_return_type_of_fn_ptr.zig b/test/compile_errors/stage1/obj/use_anyopaque_as_return_type_of_fn_ptr.zig
new file mode 100644
index 0000000000..f54bc14914
--- /dev/null
+++ b/test/compile_errors/stage1/obj/use_anyopaque_as_return_type_of_fn_ptr.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    const a: fn () anyopaque = undefined;
+    _ = a;
+}
+
+// use anyopaque as return type of fn ptr
+//
+// tmp.zig:2:20: error: return type cannot be opaque
diff --git a/test/compile_errors/stage1/obj/use_implicit_casts_to_assign_null_to_non-nullable_pointer.zig b/test/compile_errors/stage1/obj/use_implicit_casts_to_assign_null_to_non-nullable_pointer.zig
new file mode 100644
index 0000000000..a8e01dbde0
--- /dev/null
+++ b/test/compile_errors/stage1/obj/use_implicit_casts_to_assign_null_to_non-nullable_pointer.zig
@@ -0,0 +1,12 @@
+export fn entry() void {
+    var x: i32 = 1234;
+    var p: *i32 = &x;
+    var pp: *?*i32 = &p;
+    pp.* = null;
+    var y = p.*;
+    _ = y;
+}
+
+// use implicit casts to assign null to non-nullable pointer
+//
+// tmp.zig:4:23: error: expected type '*?*i32', found '**i32'
diff --git a/test/compile_errors/stage1/obj/use_invalid_number_literal_as_array_index.zig b/test/compile_errors/stage1/obj/use_invalid_number_literal_as_array_index.zig
new file mode 100644
index 0000000000..5ec655737e
--- /dev/null
+++ b/test/compile_errors/stage1/obj/use_invalid_number_literal_as_array_index.zig
@@ -0,0 +1,9 @@
+var v = 25;
+export fn entry() void {
+    var arr: [v]u8 = undefined;
+    _ = arr;
+}
+
+// use invalid number literal as array index
+//
+// tmp.zig:1:1: error: unable to infer variable type
diff --git a/test/compile_errors/stage1/obj/use_of_comptime-known_undefined_function_value.zig b/test/compile_errors/stage1/obj/use_of_comptime-known_undefined_function_value.zig
new file mode 100644
index 0000000000..5facc7e753
--- /dev/null
+++ b/test/compile_errors/stage1/obj/use_of_comptime-known_undefined_function_value.zig
@@ -0,0 +1,11 @@
+const Cmd = struct {
+    exec: fn () void,
+};
+export fn entry() void {
+    const command = Cmd{ .exec = undefined };
+    command.exec();
+}
+
+// use of comptime-known undefined function value
+//
+// tmp.zig:6:12: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/use_of_undeclared_identifier.zig b/test/compile_errors/stage1/obj/use_of_undeclared_identifier.zig
new file mode 100644
index 0000000000..e36453acc7
--- /dev/null
+++ b/test/compile_errors/stage1/obj/use_of_undeclared_identifier.zig
@@ -0,0 +1,7 @@
+export fn f() void {
+    b = 3;
+}
+
+// use of undeclared identifier
+//
+// tmp.zig:2:5: error: use of undeclared identifier 'b'
diff --git a/test/compile_errors/stage1/obj/using_an_unknown_len_ptr_type_instead_of_array.zig b/test/compile_errors/stage1/obj/using_an_unknown_len_ptr_type_instead_of_array.zig
new file mode 100644
index 0000000000..983995b098
--- /dev/null
+++ b/test/compile_errors/stage1/obj/using_an_unknown_len_ptr_type_instead_of_array.zig
@@ -0,0 +1,11 @@
+const resolutions = [*][*]const u8{
+    "[320 240  ]",
+    null,
+};
+comptime {
+    _ = resolutions;
+}
+
+// using an unknown len ptr type instead of array
+//
+// tmp.zig:1:21: error: expected array type or [_], found '[*][*]const u8'
diff --git a/test/compile_errors/stage1/obj/using_invalid_types_in_function_call_raises_an_error.zig b/test/compile_errors/stage1/obj/using_invalid_types_in_function_call_raises_an_error.zig
new file mode 100644
index 0000000000..182b5c59b0
--- /dev/null
+++ b/test/compile_errors/stage1/obj/using_invalid_types_in_function_call_raises_an_error.zig
@@ -0,0 +1,9 @@
+const MenuEffect = enum {};
+fn func(effect: MenuEffect) void { _ = effect; }
+export fn entry() void {
+    func(MenuEffect.ThisDoesNotExist);
+}
+
+// using invalid types in function call raises an error
+//
+// tmp.zig:1:20: error: enum declarations must have at least one tag
diff --git a/test/compile_errors/stage1/obj/usingnamespace_with_wrong_type.zig b/test/compile_errors/stage1/obj/usingnamespace_with_wrong_type.zig
new file mode 100644
index 0000000000..a74a8e6124
--- /dev/null
+++ b/test/compile_errors/stage1/obj/usingnamespace_with_wrong_type.zig
@@ -0,0 +1,5 @@
+usingnamespace void;
+
+// usingnamespace with wrong type
+//
+// tmp.zig:1:1: error: expected struct, enum, or union; found 'void'
diff --git a/test/compile_errors/stage1/obj/variable_has_wrong_type.zig b/test/compile_errors/stage1/obj/variable_has_wrong_type.zig
new file mode 100644
index 0000000000..1e20dde269
--- /dev/null
+++ b/test/compile_errors/stage1/obj/variable_has_wrong_type.zig
@@ -0,0 +1,8 @@
+export fn f() i32 {
+    const a = "a";
+    return a;
+}
+
+// variable has wrong type
+//
+// tmp.zig:3:12: error: expected type 'i32', found '*const [1:0]u8'
diff --git a/test/compile_errors/stage1/obj/variable_initialization_compile_error_then_referenced.zig b/test/compile_errors/stage1/obj/variable_initialization_compile_error_then_referenced.zig
new file mode 100644
index 0000000000..d96b67bc3f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/variable_initialization_compile_error_then_referenced.zig
@@ -0,0 +1,17 @@
+fn Undeclared() type {
+    return T;
+}
+fn Gen() type {
+    const X = Undeclared();
+    return struct {
+        x: X,
+    };
+}
+export fn entry() void {
+    const S = Gen();
+    _ = S;
+}
+
+// variable initialization compile error then referenced
+//
+// tmp.zig:2:12: error: use of undeclared identifier 'T'
diff --git a/test/compile_errors/stage1/obj/variable_with_type_noreturn.zig b/test/compile_errors/stage1/obj/variable_with_type_noreturn.zig
new file mode 100644
index 0000000000..b6cc65593b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/variable_with_type_noreturn.zig
@@ -0,0 +1,8 @@
+export fn entry9() void {
+    var z: noreturn = return;
+}
+
+// variable with type 'noreturn'
+//
+// tmp.zig:2:5: error: unreachable code
+// tmp.zig:2:23: note: control flow is diverted here
diff --git a/test/compile_errors/stage1/obj/vector_index_out_of_bounds.zig b/test/compile_errors/stage1/obj/vector_index_out_of_bounds.zig
new file mode 100644
index 0000000000..efdd8b5fe9
--- /dev/null
+++ b/test/compile_errors/stage1/obj/vector_index_out_of_bounds.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    const x = @import("std").meta.Vector(3, f32){ 25, 75, 5, 0 };
+    _ = x;
+}
+
+// vector index out of bounds
+//
+// tmp.zig:2:62: error: index 3 outside vector of size 3
diff --git a/test/compile_errors/stage1/obj/volatile_on_global_assembly.zig b/test/compile_errors/stage1/obj/volatile_on_global_assembly.zig
new file mode 100644
index 0000000000..8fc7ddfcc2
--- /dev/null
+++ b/test/compile_errors/stage1/obj/volatile_on_global_assembly.zig
@@ -0,0 +1,7 @@
+comptime {
+    asm volatile ("");
+}
+
+// volatile on global assembly
+//
+// tmp.zig:2:9: error: volatile is meaningless on global assembly
diff --git a/test/compile_errors/stage1/obj/wasmMemoryGrow_is_a_compile_error_in_non-Wasm_targets.zig b/test/compile_errors/stage1/obj/wasmMemoryGrow_is_a_compile_error_in_non-Wasm_targets.zig
new file mode 100644
index 0000000000..363b36a0af
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wasmMemoryGrow_is_a_compile_error_in_non-Wasm_targets.zig
@@ -0,0 +1,8 @@
+export fn foo() void {
+    _ = @wasmMemoryGrow(0, 1);
+    return;
+}
+
+// wasmMemoryGrow is a compile error in non-Wasm targets
+//
+// tmp.zig:2:9: error: @wasmMemoryGrow is a wasm32 feature only
diff --git a/test/compile_errors/stage1/obj/wasmMemorySize_is_a_compile_error_in_non-Wasm_targets.zig b/test/compile_errors/stage1/obj/wasmMemorySize_is_a_compile_error_in_non-Wasm_targets.zig
new file mode 100644
index 0000000000..419173bd01
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wasmMemorySize_is_a_compile_error_in_non-Wasm_targets.zig
@@ -0,0 +1,8 @@
+export fn foo() void {
+    _ = @wasmMemorySize(0);
+    return;
+}
+
+// wasmMemorySize is a compile error in non-Wasm targets
+//
+// tmp.zig:2:9: error: @wasmMemorySize is a wasm32 feature only
diff --git a/test/compile_errors/stage1/obj/while_expected_bool_got_error_union.zig b/test/compile_errors/stage1/obj/while_expected_bool_got_error_union.zig
new file mode 100644
index 0000000000..e79296694d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/while_expected_bool_got_error_union.zig
@@ -0,0 +1,8 @@
+export fn foo() void {
+    while (bar()) {}
+}
+fn bar() anyerror!i32 { return 1; }
+
+// while expected bool, got error union
+//
+// tmp.zig:2:15: error: expected type 'bool', found 'anyerror!i32'
diff --git a/test/compile_errors/stage1/obj/while_expected_bool_got_optional.zig b/test/compile_errors/stage1/obj/while_expected_bool_got_optional.zig
new file mode 100644
index 0000000000..7a3d184a1d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/while_expected_bool_got_optional.zig
@@ -0,0 +1,8 @@
+export fn foo() void {
+    while (bar()) {}
+}
+fn bar() ?i32 { return 1; }
+
+// while expected bool, got optional
+//
+// tmp.zig:2:15: error: expected type 'bool', found '?i32'
diff --git a/test/compile_errors/stage1/obj/while_expected_error_union_got_bool.zig b/test/compile_errors/stage1/obj/while_expected_error_union_got_bool.zig
new file mode 100644
index 0000000000..8f92276af6
--- /dev/null
+++ b/test/compile_errors/stage1/obj/while_expected_error_union_got_bool.zig
@@ -0,0 +1,8 @@
+export fn foo() void {
+    while (bar()) |x| {_ = x;} else |err| {_ = err;}
+}
+fn bar() bool { return true; }
+
+// while expected error union, got bool
+//
+// tmp.zig:2:15: error: expected error union type, found 'bool'
diff --git a/test/compile_errors/stage1/obj/while_expected_error_union_got_optional.zig b/test/compile_errors/stage1/obj/while_expected_error_union_got_optional.zig
new file mode 100644
index 0000000000..a67bf1ae16
--- /dev/null
+++ b/test/compile_errors/stage1/obj/while_expected_error_union_got_optional.zig
@@ -0,0 +1,8 @@
+export fn foo() void {
+    while (bar()) |x| {_ = x;} else |err| {_ = err;}
+}
+fn bar() ?i32 { return 1; }
+
+// while expected error union, got optional
+//
+// tmp.zig:2:15: error: expected error union type, found '?i32'
diff --git a/test/compile_errors/stage1/obj/while_expected_optional_got_bool.zig b/test/compile_errors/stage1/obj/while_expected_optional_got_bool.zig
new file mode 100644
index 0000000000..6fc0d880ce
--- /dev/null
+++ b/test/compile_errors/stage1/obj/while_expected_optional_got_bool.zig
@@ -0,0 +1,8 @@
+export fn foo() void {
+    while (bar()) |x| {_ = x;}
+}
+fn bar() bool { return true; }
+
+// while expected optional, got bool
+//
+// tmp.zig:2:15: error: expected optional type, found 'bool'
diff --git a/test/compile_errors/stage1/obj/while_expected_optional_got_error_union.zig b/test/compile_errors/stage1/obj/while_expected_optional_got_error_union.zig
new file mode 100644
index 0000000000..472b3b81bc
--- /dev/null
+++ b/test/compile_errors/stage1/obj/while_expected_optional_got_error_union.zig
@@ -0,0 +1,8 @@
+export fn foo() void {
+    while (bar()) |x| {_ = x;}
+}
+fn bar() anyerror!i32 { return 1; }
+
+// while expected optional, got error union
+//
+// tmp.zig:2:15: error: expected optional type, found 'anyerror!i32'
diff --git a/test/compile_errors/stage1/obj/while_loop_body_expression_ignored.zig b/test/compile_errors/stage1/obj/while_loop_body_expression_ignored.zig
new file mode 100644
index 0000000000..621c0d41d7
--- /dev/null
+++ b/test/compile_errors/stage1/obj/while_loop_body_expression_ignored.zig
@@ -0,0 +1,20 @@
+fn returns() usize {
+    return 2;
+}
+export fn f1() void {
+    while (true) returns();
+}
+export fn f2() void {
+    var x: ?i32 = null;
+    while (x) |_| returns();
+}
+export fn f3() void {
+    var x: anyerror!i32 = error.Bad;
+    while (x) |_| returns() else |_| unreachable;
+}
+
+// while loop body expression ignored
+//
+// tmp.zig:5:25: error: expression value is ignored
+// tmp.zig:9:26: error: expression value is ignored
+// tmp.zig:13:26: error: expression value is ignored
diff --git a/test/compile_errors/stage1/obj/write_to_const_global_variable.zig b/test/compile_errors/stage1/obj/write_to_const_global_variable.zig
new file mode 100644
index 0000000000..327b3d02d0
--- /dev/null
+++ b/test/compile_errors/stage1/obj/write_to_const_global_variable.zig
@@ -0,0 +1,9 @@
+const x : i32 = 99;
+fn f() void {
+    x = 1;
+}
+export fn entry() void { f(); }
+
+// write to const global variable
+//
+// tmp.zig:3:9: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/obj/wrong_frame_type_used_for_async_call.zig b/test/compile_errors/stage1/obj/wrong_frame_type_used_for_async_call.zig
new file mode 100644
index 0000000000..ba150c45cc
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wrong_frame_type_used_for_async_call.zig
@@ -0,0 +1,14 @@
+export fn entry() void {
+    var frame: @Frame(foo) = undefined;
+    frame = async bar();
+}
+fn foo() void {
+    suspend {}
+}
+fn bar() void {
+    suspend {}
+}
+
+// wrong frame type used for async call
+//
+// tmp.zig:3:13: error: expected type '*@Frame(bar)', found '*@Frame(foo)'
diff --git a/test/compile_errors/stage1/obj/wrong_function_type.zig b/test/compile_errors/stage1/obj/wrong_function_type.zig
new file mode 100644
index 0000000000..c2238bb649
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wrong_function_type.zig
@@ -0,0 +1,9 @@
+const fns = [_]fn() void { a, b, c };
+fn a() i32 {return 0;}
+fn b() i32 {return 1;}
+fn c() i32 {return 2;}
+export fn entry() usize { return @sizeOf(@TypeOf(fns)); }
+
+// wrong function type
+//
+// tmp.zig:1:28: error: expected type 'fn() void', found 'fn() i32'
diff --git a/test/compile_errors/stage1/obj/wrong_initializer_for_union_payload_of_type_type.zig b/test/compile_errors/stage1/obj/wrong_initializer_for_union_payload_of_type_type.zig
new file mode 100644
index 0000000000..1d56094b6d
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wrong_initializer_for_union_payload_of_type_type.zig
@@ -0,0 +1,14 @@
+const U = union(enum) {
+    A: type,
+};
+const S = struct {
+    u: U,
+};
+export fn entry() void {
+    comptime var v: S = undefined;
+    v.u.A = U{ .A = i32 };
+}
+
+// wrong initializer for union payload of type 'type'
+//
+// tmp.zig:9:8: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/wrong_number_of_arguments.zig b/test/compile_errors/stage1/obj/wrong_number_of_arguments.zig
new file mode 100644
index 0000000000..4cb13fdd12
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wrong_number_of_arguments.zig
@@ -0,0 +1,8 @@
+export fn a() void {
+    c(1);
+}
+fn c(d: i32, e: i32, f: i32) void { _ = d; _ = e; _ = f; }
+
+// wrong number of arguments
+//
+// tmp.zig:2:6: error: expected 3 argument(s), found 1
diff --git a/test/compile_errors/stage1/obj/wrong_number_of_arguments_for_method_fn_call.zig b/test/compile_errors/stage1/obj/wrong_number_of_arguments_for_method_fn_call.zig
new file mode 100644
index 0000000000..25449feb22
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wrong_number_of_arguments_for_method_fn_call.zig
@@ -0,0 +1,12 @@
+const Foo = struct {
+    fn method(self: *const Foo, a: i32) void {_ = self; _ = a;}
+};
+fn f(foo: *const Foo) void {
+
+    foo.method(1, 2);
+}
+export fn entry() usize { return @sizeOf(@TypeOf(f)); }
+
+// wrong number of arguments for method fn call
+//
+// tmp.zig:6:15: error: expected 2 argument(s), found 3
diff --git a/test/compile_errors/stage1/obj/wrong_panic_signature_generic_function.zig b/test/compile_errors/stage1/obj/wrong_panic_signature_generic_function.zig
new file mode 100644
index 0000000000..faaa24ba60
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wrong_panic_signature_generic_function.zig
@@ -0,0 +1,10 @@
+pub fn panic(comptime msg: []const u8, error_return_trace: ?*builtin.StackTrace) noreturn {
+    _ = msg; _ = error_return_trace;
+    while (true) {}
+}
+const builtin = @import("std").builtin;
+
+// wrong panic signature, generic function
+//
+// error: expected type 'fn([]const u8, ?*std.builtin.StackTrace) noreturn', found 'fn([]const u8,anytype) anytype'
+// note: only one of the functions is generic
diff --git a/test/compile_errors/stage1/obj/wrong_panic_signature_runtime_function.zig b/test/compile_errors/stage1/obj/wrong_panic_signature_runtime_function.zig
new file mode 100644
index 0000000000..92553c3104
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wrong_panic_signature_runtime_function.zig
@@ -0,0 +1,8 @@
+test "" {}
+
+pub fn panic() void {}
+
+
+// wrong panic signature, runtime function
+//
+// error: expected type 'fn([]const u8, ?*std.builtin.StackTrace) noreturn', found 'fn() void'
diff --git a/test/compile_errors/stage1/obj/wrong_pointer_coerced_to_pointer_to_opaque_{}.zig b/test/compile_errors/stage1/obj/wrong_pointer_coerced_to_pointer_to_opaque_{}.zig
new file mode 100644
index 0000000000..ed88e3be28
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wrong_pointer_coerced_to_pointer_to_opaque_{}.zig
@@ -0,0 +1,10 @@
+const Derp = opaque {};
+extern fn bar(d: *Derp) void;
+export fn foo() void {
+    var x = @as(u8, 1);
+    bar(@ptrCast(*anyopaque, &x));
+}
+
+// wrong pointer coerced to pointer to opaque {}
+//
+// tmp.zig:5:9: error: expected type '*Derp', found '*anyopaque'
diff --git a/test/compile_errors/stage1/obj/wrong_return_type_for_main.zig b/test/compile_errors/stage1/obj/wrong_return_type_for_main.zig
new file mode 100644
index 0000000000..bf335874db
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wrong_return_type_for_main.zig
@@ -0,0 +1,5 @@
+pub fn main() f32 { }
+
+// wrong return type for main
+//
+// error: expected return type of main to be 'void', '!void', 'noreturn', 'u8', or '!u8'
diff --git a/test/compile_errors/stage1/obj/wrong_size_to_an_array_literal.zig b/test/compile_errors/stage1/obj/wrong_size_to_an_array_literal.zig
new file mode 100644
index 0000000000..68cb263212
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wrong_size_to_an_array_literal.zig
@@ -0,0 +1,8 @@
+comptime {
+    const array = [2]u8{1, 2, 3};
+    _ = array;
+}
+
+// wrong size to an array literal
+//
+// tmp.zig:2:31: error: index 2 outside array of size 2
diff --git a/test/compile_errors/stage1/obj/wrong_type_for_argument_tuple_to_asyncCall.zig b/test/compile_errors/stage1/obj/wrong_type_for_argument_tuple_to_asyncCall.zig
new file mode 100644
index 0000000000..d9e45a69b7
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wrong_type_for_argument_tuple_to_asyncCall.zig
@@ -0,0 +1,12 @@
+export fn entry1() void {
+    var frame: @Frame(foo) = undefined;
+    @asyncCall(&frame, {}, foo, {});
+}
+
+fn foo() i32 {
+    return 0;
+}
+
+// wrong type for argument tuple to @asyncCall
+//
+// tmp.zig:3:33: error: expected tuple or struct, found 'void'
diff --git a/test/compile_errors/stage1/obj/wrong_type_for_reify_type.zig b/test/compile_errors/stage1/obj/wrong_type_for_reify_type.zig
new file mode 100644
index 0000000000..2d8ea02326
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wrong_type_for_reify_type.zig
@@ -0,0 +1,7 @@
+export fn entry() void {
+    _ = @Type(0);
+}
+
+// wrong type for @Type
+//
+// tmp.zig:2:15: error: expected type 'std.builtin.Type', found 'comptime_int'
diff --git a/test/compile_errors/stage1/obj/wrong_type_for_result_ptr_to_asyncCall.zig b/test/compile_errors/stage1/obj/wrong_type_for_result_ptr_to_asyncCall.zig
new file mode 100644
index 0000000000..07c5ae8a0b
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wrong_type_for_result_ptr_to_asyncCall.zig
@@ -0,0 +1,14 @@
+export fn entry() void {
+    _ = async amain();
+}
+fn amain() i32 {
+    var frame: @Frame(foo) = undefined;
+    return await @asyncCall(&frame, false, foo, .{});
+}
+fn foo() i32 {
+    return 1234;
+}
+
+// wrong type for result ptr to @asyncCall
+//
+// tmp.zig:6:37: error: expected type '*i32', found 'bool'
diff --git a/test/compile_errors/stage1/obj/wrong_type_passed_to_panic.zig b/test/compile_errors/stage1/obj/wrong_type_passed_to_panic.zig
new file mode 100644
index 0000000000..b16d563571
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wrong_type_passed_to_panic.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    var e = error.Foo;
+    @panic(e);
+}
+
+// wrong type passed to @panic
+//
+// tmp.zig:3:12: error: expected type '[]const u8', found 'error{Foo}'
diff --git a/test/compile_errors/stage1/obj/wrong_type_to_hasField.zig b/test/compile_errors/stage1/obj/wrong_type_to_hasField.zig
new file mode 100644
index 0000000000..a79fec2a21
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wrong_type_to_hasField.zig
@@ -0,0 +1,7 @@
+export fn entry() bool {
+    return @hasField(i32, "hi");
+}
+
+// wrong type to @hasField
+//
+// tmp.zig:2:22: error: type 'i32' does not support @hasField
diff --git a/test/compile_errors/stage1/obj/wrong_types_given_to_atomic_order_args_in_cmpxchg.zig b/test/compile_errors/stage1/obj/wrong_types_given_to_atomic_order_args_in_cmpxchg.zig
new file mode 100644
index 0000000000..47cdaa372f
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wrong_types_given_to_atomic_order_args_in_cmpxchg.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    var x: i32 = 1234;
+    while (!@cmpxchgWeak(i32, &x, 1234, 5678, @as(u32, 1234), @as(u32, 1234))) {}
+}
+
+// wrong types given to atomic order args in cmpxchg
+//
+// tmp.zig:3:47: error: expected type 'std.builtin.AtomicOrder', found 'u32'
diff --git a/test/compile_errors/stage1/obj/wrong_types_given_to_export.zig b/test/compile_errors/stage1/obj/wrong_types_given_to_export.zig
new file mode 100644
index 0000000000..cdd7ab4631
--- /dev/null
+++ b/test/compile_errors/stage1/obj/wrong_types_given_to_export.zig
@@ -0,0 +1,8 @@
+fn entry() callconv(.C) void { }
+comptime {
+    @export(entry, .{.name = "entry", .linkage = @as(u32, 1234) });
+}
+
+// wrong types given to @export
+//
+// tmp.zig:3:59: error: expected type 'std.builtin.GlobalLinkage', found 'comptime_int'
diff --git a/test/compile_errors/stage1/test/access_invalid_typeInfo_decl.zig b/test/compile_errors/stage1/test/access_invalid_typeInfo_decl.zig
new file mode 100644
index 0000000000..2fc5730af0
--- /dev/null
+++ b/test/compile_errors/stage1/test/access_invalid_typeInfo_decl.zig
@@ -0,0 +1,8 @@
+const A = B;
+test "Crash" {
+    _ = @typeInfo(@This()).Struct.decls[0];
+}
+
+// access invalid @typeInfo decl
+//
+// tmp.zig:1:11: error: use of undeclared identifier 'B'
diff --git a/test/compile_errors/stage1/test/alignCast_of_zero_sized_types.zig b/test/compile_errors/stage1/test/alignCast_of_zero_sized_types.zig
new file mode 100644
index 0000000000..4c05571202
--- /dev/null
+++ b/test/compile_errors/stage1/test/alignCast_of_zero_sized_types.zig
@@ -0,0 +1,25 @@
+export fn foo() void {
+    const a: *void = undefined;
+    _ = @alignCast(2, a);
+}
+export fn bar() void {
+    const a: ?*void = undefined;
+    _ = @alignCast(2, a);
+}
+export fn baz() void {
+    const a: []void = undefined;
+    _ = @alignCast(2, a);
+}
+export fn qux() void {
+    const a = struct {
+        fn a(comptime b: u32) void { _ = b; }
+    }.a;
+    _ = @alignCast(2, a);
+}
+
+// @alignCast of zero sized types
+//
+// tmp.zig:3:23: error: cannot adjust alignment of zero sized type '*void'
+// tmp.zig:7:23: error: cannot adjust alignment of zero sized type '?*void'
+// tmp.zig:11:23: error: cannot adjust alignment of zero sized type '[]void'
+// tmp.zig:17:23: error: cannot adjust alignment of zero sized type 'fn(u32) anytype'
diff --git a/test/compile_errors/stage1/test/bad_splat_type.zig b/test/compile_errors/stage1/test/bad_splat_type.zig
new file mode 100644
index 0000000000..9a16bbc73d
--- /dev/null
+++ b/test/compile_errors/stage1/test/bad_splat_type.zig
@@ -0,0 +1,9 @@
+export fn entry() void {
+    const c = 4;
+    var v = @splat(4, c);
+    _ = v;
+}
+
+// bad @splat type
+//
+// tmp.zig:3:23: error: vector element type must be integer, float, bool, or pointer; 'comptime_int' is invalid
diff --git a/test/compile_errors/stage1/test/binary_OR_operator_on_error_sets.zig b/test/compile_errors/stage1/test/binary_OR_operator_on_error_sets.zig
new file mode 100644
index 0000000000..d9894a32a0
--- /dev/null
+++ b/test/compile_errors/stage1/test/binary_OR_operator_on_error_sets.zig
@@ -0,0 +1,10 @@
+pub const A = error.A;
+pub const AB = A | error.B;
+export fn entry() void {
+    var x: AB = undefined;
+    _ = x;
+}
+
+// binary OR operator on error sets
+//
+// tmp.zig:2:18: error: invalid operands to binary expression: 'error{A}' and 'error{B}'
diff --git a/test/compile_errors/stage1/test/call_rejects_non_comptime-known_fn-always_inline.zig b/test/compile_errors/stage1/test/call_rejects_non_comptime-known_fn-always_inline.zig
new file mode 100644
index 0000000000..ea822f8d91
--- /dev/null
+++ b/test/compile_errors/stage1/test/call_rejects_non_comptime-known_fn-always_inline.zig
@@ -0,0 +1,8 @@
+pub export fn entry() void {
+    var call_me: fn () void = undefined;
+    @call(.{ .modifier = .always_inline }, call_me, .{});
+}
+
+// @call rejects non comptime-known fn - always_inline
+//
+// tmp.zig:3:5: error: the specified modifier requires a comptime-known function
diff --git a/test/compile_errors/stage1/test/call_rejects_non_comptime-known_fn-compile_time.zig b/test/compile_errors/stage1/test/call_rejects_non_comptime-known_fn-compile_time.zig
new file mode 100644
index 0000000000..3c50830787
--- /dev/null
+++ b/test/compile_errors/stage1/test/call_rejects_non_comptime-known_fn-compile_time.zig
@@ -0,0 +1,8 @@
+pub export fn entry() void {
+    var call_me: fn () void = undefined;
+    @call(.{ .modifier = .compile_time }, call_me, .{});
+}
+
+// @call rejects non comptime-known fn - compile_time
+//
+// tmp.zig:3:5: error: the specified modifier requires a comptime-known function
diff --git a/test/compile_errors/stage1/test/cast_between_optional_T_where_T_is_not_a_pointer.zig b/test/compile_errors/stage1/test/cast_between_optional_T_where_T_is_not_a_pointer.zig
new file mode 100644
index 0000000000..8f5ca1c25d
--- /dev/null
+++ b/test/compile_errors/stage1/test/cast_between_optional_T_where_T_is_not_a_pointer.zig
@@ -0,0 +1,12 @@
+pub const fnty1 = ?fn (i8) void;
+pub const fnty2 = ?fn (u64) void;
+export fn entry() void {
+    var a: fnty1 = undefined;
+    var b: fnty2 = undefined;
+    a = b;
+}
+
+// cast between ?T where T is not a pointer
+//
+// tmp.zig:6:9: error: expected type '?fn(i8) void', found '?fn(u64) void'
+// tmp.zig:6:9: note: optional type child 'fn(u64) void' cannot cast into optional type child 'fn(i8) void'
diff --git a/test/compile_errors/stage1/test/combination_of_nosuspend_and_async.zig b/test/compile_errors/stage1/test/combination_of_nosuspend_and_async.zig
new file mode 100644
index 0000000000..a164fb621b
--- /dev/null
+++ b/test/compile_errors/stage1/test/combination_of_nosuspend_and_async.zig
@@ -0,0 +1,13 @@
+export fn entry() void {
+    nosuspend {
+        const bar = async foo();
+        suspend {}
+        resume bar;
+    }
+}
+fn foo() void {}
+
+// combination of nosuspend and async
+//
+// tmp.zig:4:9: error: suspend inside nosuspend block
+// tmp.zig:2:5: note: nosuspend block here
diff --git a/test/compile_errors/stage1/test/comparison_of_non-tagged_union_and_enum_literal.zig b/test/compile_errors/stage1/test/comparison_of_non-tagged_union_and_enum_literal.zig
new file mode 100644
index 0000000000..b3c1506705
--- /dev/null
+++ b/test/compile_errors/stage1/test/comparison_of_non-tagged_union_and_enum_literal.zig
@@ -0,0 +1,11 @@
+export fn entry() void {
+    const U = union { A: u32, B: u64 };
+    var u = U{ .A = 42 };
+    var ok = u == .A;
+    _ = ok;
+}
+
+// comparison of non-tagged union and enum literal
+//
+// tmp.zig:4:16: error: comparison of union and enum literal is only valid for tagged union types
+// tmp.zig:2:15: note: type U is not a tagged union
diff --git a/test/compile_errors/stage1/test/comptime_vector_overflow_shows_the_index.zig b/test/compile_errors/stage1/test/comptime_vector_overflow_shows_the_index.zig
new file mode 100644
index 0000000000..a638c05b3b
--- /dev/null
+++ b/test/compile_errors/stage1/test/comptime_vector_overflow_shows_the_index.zig
@@ -0,0 +1,11 @@
+comptime {
+    var a: @import("std").meta.Vector(4, u8) = [_]u8{ 1, 2, 255, 4 };
+    var b: @import("std").meta.Vector(4, u8) = [_]u8{ 5, 6, 1, 8 };
+    var x = a + b;
+    _ = x;
+}
+
+// comptime vector overflow shows the index
+//
+// tmp.zig:4:15: error: operation caused overflow
+// tmp.zig:4:15: note: when computing vector element at index 2
diff --git a/test/compile_errors/stage1/test/duplicate-unused_labels.zig b/test/compile_errors/stage1/test/duplicate-unused_labels.zig
new file mode 100644
index 0000000000..285741afc4
--- /dev/null
+++ b/test/compile_errors/stage1/test/duplicate-unused_labels.zig
@@ -0,0 +1,30 @@
+comptime {
+    blk: { blk: while (false) {} }
+}
+comptime {
+    blk: while (false) { blk: for (@as([0]void, undefined)) |_| {} }
+}
+comptime {
+    blk: for (@as([0]void, undefined)) |_| { blk: {} }
+}
+comptime {
+    blk: {}
+}
+comptime {
+    blk: while(false) {}
+}
+comptime {
+    blk: for(@as([0]void, undefined)) |_| {}
+}
+
+// duplicate/unused labels
+//
+// tmp.zig:2:12: error: redefinition of label 'blk'
+// tmp.zig:2:5: note: previous definition here
+// tmp.zig:5:26: error: redefinition of label 'blk'
+// tmp.zig:5:5: note: previous definition here
+// tmp.zig:8:46: error: redefinition of label 'blk'
+// tmp.zig:8:5: note: previous definition here
+// tmp.zig:11:5: error: unused block label
+// tmp.zig:14:5: error: unused while loop label
+// tmp.zig:17:5: error: unused for loop label
diff --git a/test/compile_errors/stage1/test/duplicate_field_in_anonymous_struct_literal.zig b/test/compile_errors/stage1/test/duplicate_field_in_anonymous_struct_literal.zig
new file mode 100644
index 0000000000..1b671d2ad3
--- /dev/null
+++ b/test/compile_errors/stage1/test/duplicate_field_in_anonymous_struct_literal.zig
@@ -0,0 +1,16 @@
+export fn entry() void {
+    const anon = .{
+        .inner = .{
+            .a = .{
+                .something = "text",
+            },
+            .a = .{},
+        },
+    };
+    _ = anon;
+}
+
+// duplicate field in anonymous struct literal
+//
+// tmp.zig:7:13: error: duplicate field
+// tmp.zig:4:13: note: other field here
diff --git a/test/compile_errors/stage1/test/error_in_struct_initializer_doesnt_crash_the_compiler.zig b/test/compile_errors/stage1/test/error_in_struct_initializer_doesnt_crash_the_compiler.zig
new file mode 100644
index 0000000000..e37b887121
--- /dev/null
+++ b/test/compile_errors/stage1/test/error_in_struct_initializer_doesnt_crash_the_compiler.zig
@@ -0,0 +1,12 @@
+pub export fn entry() void {
+    const bitfield = struct {
+        e: u8,
+        e: u8,
+    };
+    var a = .{@sizeOf(bitfield)};
+    _ = a;
+}
+
+// error in struct initializer doesn't crash the compiler
+//
+// tmp.zig:4:9: error: duplicate struct field: 'e'
diff --git a/test/compile_errors/stage1/test/errors_in_for_loop_bodies_are_propagated.zig b/test/compile_errors/stage1/test/errors_in_for_loop_bodies_are_propagated.zig
new file mode 100644
index 0000000000..32e99cf410
--- /dev/null
+++ b/test/compile_errors/stage1/test/errors_in_for_loop_bodies_are_propagated.zig
@@ -0,0 +1,8 @@
+pub export fn entry() void {
+    var arr: [100]u8 = undefined;
+    for (arr) |bits| _ = @popCount(bits);
+}
+
+// errors in for loop bodies are propagated
+//
+// tmp.zig:3:26: error: expected 2 arguments, found 1
diff --git a/test/compile_errors/stage1/test/export_with_empty_name_string.zig b/test/compile_errors/stage1/test/export_with_empty_name_string.zig
new file mode 100644
index 0000000000..424ee6e4b5
--- /dev/null
+++ b/test/compile_errors/stage1/test/export_with_empty_name_string.zig
@@ -0,0 +1,8 @@
+pub export fn entry() void { }
+comptime {
+    @export(entry, .{ .name = "" });
+}
+
+// @export with empty name string
+//
+// tmp.zig:3:5: error: exported symbol name cannot be empty
diff --git a/test/compile_errors/stage1/test/helpful_return_type_error_message.zig b/test/compile_errors/stage1/test/helpful_return_type_error_message.zig
new file mode 100644
index 0000000000..6f1f9639da
--- /dev/null
+++ b/test/compile_errors/stage1/test/helpful_return_type_error_message.zig
@@ -0,0 +1,27 @@
+export fn foo() u32 {
+    return error.Ohno;
+}
+fn bar() !u32 {
+    return error.Ohno;
+}
+export fn baz() void {
+    try bar();
+}
+export fn qux() u32 {
+    return bar();
+}
+export fn quux() u32 {
+    var buf: u32 = 0;
+    buf = bar();
+}
+
+// helpful return type error message
+//
+// tmp.zig:2:17: error: expected type 'u32', found 'error{Ohno}'
+// tmp.zig:1:17: note: function cannot return an error
+// tmp.zig:8:5: error: expected type 'void', found '@typeInfo(@typeInfo(@TypeOf(bar)).Fn.return_type.?).ErrorUnion.error_set'
+// tmp.zig:7:17: note: function cannot return an error
+// tmp.zig:11:15: error: cannot convert error union to payload type. consider using `try`, `catch`, or `if`. expected type 'u32', found '@typeInfo(@typeInfo(@TypeOf(bar)).Fn.return_type.?).ErrorUnion.error_set!u32'
+// tmp.zig:10:17: note: function cannot return an error
+// tmp.zig:15:14: error: cannot convert error union to payload type. consider using `try`, `catch`, or `if`. expected type 'u32', found '@typeInfo(@typeInfo(@TypeOf(bar)).Fn.return_type.?).ErrorUnion.error_set!u32'
+// tmp.zig:14:5: note: cannot store an error in type 'u32'
diff --git a/test/compile_errors/stage1/test/int-float_conversion_to_comptime_int-float.zig b/test/compile_errors/stage1/test/int-float_conversion_to_comptime_int-float.zig
new file mode 100644
index 0000000000..eeb2e4798e
--- /dev/null
+++ b/test/compile_errors/stage1/test/int-float_conversion_to_comptime_int-float.zig
@@ -0,0 +1,13 @@
+export fn foo() void {
+    var a: f32 = 2;
+    _ = @floatToInt(comptime_int, a);
+}
+export fn bar() void {
+    var a: u32 = 2;
+    _ = @intToFloat(comptime_float, a);
+}
+
+// int/float conversion to comptime_int/float
+//
+// tmp.zig:3:35: error: unable to evaluate constant expression
+// tmp.zig:7:37: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/test/invalid_assignments.zig b/test/compile_errors/stage1/test/invalid_assignments.zig
new file mode 100644
index 0000000000..203784c554
--- /dev/null
+++ b/test/compile_errors/stage1/test/invalid_assignments.zig
@@ -0,0 +1,17 @@
+export fn entry1() void {
+    var a: []const u8 = "foo";
+    a[0..2] = "bar";
+}
+export fn entry2() void {
+    var a: u8 = 2;
+    a + 2 = 3;
+}
+export fn entry4() void {
+    2 + 2 = 3;
+}
+
+// invalid assignments
+//
+// tmp.zig:3:6: error: invalid left-hand side to assignment
+// tmp.zig:7:7: error: invalid left-hand side to assignment
+// tmp.zig:10:7: error: invalid left-hand side to assignment
diff --git a/test/compile_errors/stage1/test/invalid_float_casts.zig b/test/compile_errors/stage1/test/invalid_float_casts.zig
new file mode 100644
index 0000000000..0e2509dcaf
--- /dev/null
+++ b/test/compile_errors/stage1/test/invalid_float_casts.zig
@@ -0,0 +1,23 @@
+export fn foo() void {
+    var a: f32 = 2;
+    _ = @floatCast(comptime_float, a);
+}
+export fn bar() void {
+    var a: f32 = 2;
+    _ = @floatToInt(f32, a);
+}
+export fn baz() void {
+    var a: f32 = 2;
+    _ = @intToFloat(f32, a);
+}
+export fn qux() void {
+    var a: u32 = 2;
+    _ = @floatCast(f32, a);
+}
+
+// invalid float casts
+//
+// tmp.zig:3:36: error: unable to evaluate constant expression
+// tmp.zig:7:21: error: expected integer type, found 'f32'
+// tmp.zig:11:26: error: expected int type, found 'f32'
+// tmp.zig:15:25: error: expected float type, found 'u32'
diff --git a/test/compile_errors/stage1/test/invalid_int_casts.zig b/test/compile_errors/stage1/test/invalid_int_casts.zig
new file mode 100644
index 0000000000..6870ecc723
--- /dev/null
+++ b/test/compile_errors/stage1/test/invalid_int_casts.zig
@@ -0,0 +1,23 @@
+export fn foo() void {
+    var a: u32 = 2;
+    _ = @intCast(comptime_int, a);
+}
+export fn bar() void {
+    var a: u32 = 2;
+    _ = @intToFloat(u32, a);
+}
+export fn baz() void {
+    var a: u32 = 2;
+    _ = @floatToInt(u32, a);
+}
+export fn qux() void {
+    var a: f32 = 2;
+    _ = @intCast(u32, a);
+}
+
+// invalid int casts
+//
+// tmp.zig:3:32: error: unable to evaluate constant expression
+// tmp.zig:7:21: error: expected float type, found 'u32'
+// tmp.zig:11:26: error: expected float type, found 'u32'
+// tmp.zig:15:23: error: expected integer type, found 'f32'
diff --git a/test/compile_errors/stage1/test/invalid_non-exhaustive_enum_to_union.zig b/test/compile_errors/stage1/test/invalid_non-exhaustive_enum_to_union.zig
new file mode 100644
index 0000000000..f78a9e62ff
--- /dev/null
+++ b/test/compile_errors/stage1/test/invalid_non-exhaustive_enum_to_union.zig
@@ -0,0 +1,24 @@
+const E = enum(u8) {
+    a,
+    b,
+    _,
+};
+const U = union(E) {
+    a,
+    b,
+};
+export fn foo() void {
+    var e = @intToEnum(E, 15);
+    var u: U = e;
+    _ = u;
+}
+export fn bar() void {
+    const e = @intToEnum(E, 15);
+    var u: U = e;
+    _ = u;
+}
+
+// invalid non-exhaustive enum to union
+//
+// tmp.zig:12:16: error: runtime cast to union 'U' from non-exhaustive enum
+// tmp.zig:17:16: error: no tag by value 15
diff --git a/test/compile_errors/stage1/test/invalid_pointer_with_reify_type.zig b/test/compile_errors/stage1/test/invalid_pointer_with_reify_type.zig
new file mode 100644
index 0000000000..febf9685fd
--- /dev/null
+++ b/test/compile_errors/stage1/test/invalid_pointer_with_reify_type.zig
@@ -0,0 +1,16 @@
+export fn entry() void {
+    _ = @Type(.{ .Pointer = .{
+        .size = .One,
+        .is_const = false,
+        .is_volatile = false,
+        .alignment = 1,
+        .address_space = .generic,
+        .child = u8,
+        .is_allowzero = false,
+        .sentinel = &@as(u8, 0),
+    }});
+}
+
+// invalid pointer with @Type
+//
+// tmp.zig:2:16: error: sentinels are only allowed on slices and unknown-length pointers
diff --git a/test/compile_errors/stage1/test/nested_vectors.zig b/test/compile_errors/stage1/test/nested_vectors.zig
new file mode 100644
index 0000000000..a05e9b0c5b
--- /dev/null
+++ b/test/compile_errors/stage1/test/nested_vectors.zig
@@ -0,0 +1,10 @@
+export fn entry() void {
+    const V1 = @import("std").meta.Vector(4, u8);
+    const V2 = @Type(.{ .Vector = .{ .len = 4, .child = V1 } });
+    var v: V2 = undefined;
+    _ = v;
+}
+
+// nested vectors
+//
+// tmp.zig:3:23: error: vector element type must be integer, float, bool, or pointer; '@Vector(4, u8)' is invalid
diff --git a/test/compile_errors/stage1/test/non-exhaustive_enum_marker_assigned_a_value.zig b/test/compile_errors/stage1/test/non-exhaustive_enum_marker_assigned_a_value.zig
new file mode 100644
index 0000000000..53037ff181
--- /dev/null
+++ b/test/compile_errors/stage1/test/non-exhaustive_enum_marker_assigned_a_value.zig
@@ -0,0 +1,17 @@
+const A = enum {
+    a,
+    b,
+    _ = 1,
+};
+const B = enum {
+    a,
+    b,
+    _,
+};
+comptime { _ = A; _ = B; }
+
+// non-exhaustive enum marker assigned a value
+//
+// tmp.zig:4:9: error: '_' is used to mark an enum as non-exhaustive and cannot be assigned a value
+// tmp.zig:6:11: error: non-exhaustive enum missing integer tag type
+// tmp.zig:9:5: note: marked non-exhaustive here
diff --git a/test/compile_errors/stage1/test/non-exhaustive_enums.zig b/test/compile_errors/stage1/test/non-exhaustive_enums.zig
new file mode 100644
index 0000000000..49ceff3178
--- /dev/null
+++ b/test/compile_errors/stage1/test/non-exhaustive_enums.zig
@@ -0,0 +1,19 @@
+const B = enum(u1) {
+    a,
+    _,
+    b,
+};
+const C = enum(u1) {
+    a,
+    b,
+    _,
+};
+pub export fn entry() void {
+    _ = B;
+    _ = C;
+}
+
+// non-exhaustive enums
+//
+// tmp.zig:3:5: error: '_' field of non-exhaustive enum must be last
+// tmp.zig:6:11: error: non-exhaustive enum specifies every value
diff --git a/test/compile_errors/stage1/test/not_an_enum_type.zig b/test/compile_errors/stage1/test/not_an_enum_type.zig
new file mode 100644
index 0000000000..f92c3d44e1
--- /dev/null
+++ b/test/compile_errors/stage1/test/not_an_enum_type.zig
@@ -0,0 +1,17 @@
+export fn entry() void {
+    var self: Error = undefined;
+    switch (self) {
+        InvalidToken => |x| return x.token,
+        ExpectedVarDeclOrFn => |x| return x.token,
+    }
+}
+const Error = union(enum) {
+    A: InvalidToken,
+    B: ExpectedVarDeclOrFn,
+};
+const InvalidToken = struct {};
+const ExpectedVarDeclOrFn = struct {};
+
+// not an enum type
+//
+// tmp.zig:4:9: error: expected type '@typeInfo(Error).Union.tag_type.?', found 'type'
diff --git a/test/compile_errors/stage1/test/packed_struct_with_fields_of_not_allowed_types.zig b/test/compile_errors/stage1/test/packed_struct_with_fields_of_not_allowed_types.zig
new file mode 100644
index 0000000000..dc156342f4
--- /dev/null
+++ b/test/compile_errors/stage1/test/packed_struct_with_fields_of_not_allowed_types.zig
@@ -0,0 +1,71 @@
+const A = packed struct {
+    x: anyerror,
+};
+const B = packed struct {
+    x: [2]u24,
+};
+const C = packed struct {
+    x: [1]anyerror,
+};
+const D = packed struct {
+    x: [1]S,
+};
+const E = packed struct {
+    x: [1]U,
+};
+const F = packed struct {
+    x: ?anyerror,
+};
+const G = packed struct {
+    x: Enum,
+};
+export fn entry1() void {
+    var a: A = undefined;
+    _ = a;
+}
+export fn entry2() void {
+    var b: B = undefined;
+    _ = b;
+}
+export fn entry3() void {
+    var r: C = undefined;
+    _ = r;
+}
+export fn entry4() void {
+    var d: D = undefined;
+    _ = d;
+}
+export fn entry5() void {
+    var e: E = undefined;
+    _ = e;
+}
+export fn entry6() void {
+    var f: F = undefined;
+    _ = f;
+}
+export fn entry7() void {
+    var g: G = undefined;
+    _ = g;
+}
+const S = struct {
+    x: i32,
+};
+const U = struct {
+    A: i32,
+    B: u32,
+};
+const Enum = enum {
+    A,
+    B,
+};
+
+// packed struct with fields of not allowed types
+//
+// tmp.zig:2:5: error: type 'anyerror' not allowed in packed struct; no guaranteed in-memory representation
+// tmp.zig:5:5: error: array of 'u24' not allowed in packed struct due to padding bits (must be padded from 48 to 64 bits)
+// tmp.zig:8:5: error: type 'anyerror' not allowed in packed struct; no guaranteed in-memory representation
+// tmp.zig:11:5: error: non-packed, non-extern struct 'S' not allowed in packed struct; no guaranteed in-memory representation
+// tmp.zig:14:5: error: non-packed, non-extern struct 'U' not allowed in packed struct; no guaranteed in-memory representation
+// tmp.zig:17:5: error: type '?anyerror' not allowed in packed struct; no guaranteed in-memory representation
+// tmp.zig:20:5: error: type 'Enum' not allowed in packed struct; no guaranteed in-memory representation
+// tmp.zig:57:14: note: enum declaration does not specify an integer tag type
diff --git a/test/compile_errors/stage1/test/ptrToInt_with_pointer_to_zero-sized_type.zig b/test/compile_errors/stage1/test/ptrToInt_with_pointer_to_zero-sized_type.zig
new file mode 100644
index 0000000000..63ba217247
--- /dev/null
+++ b/test/compile_errors/stage1/test/ptrToInt_with_pointer_to_zero-sized_type.zig
@@ -0,0 +1,9 @@
+export fn entry() void {
+    var pointer: ?*u0 = null;
+    var x = @ptrToInt(pointer);
+    _ = x;
+}
+
+// @ptrToInt with pointer to zero-sized type
+//
+// tmp.zig:3:23: error: pointer to size 0 type has no address
diff --git a/test/compile_errors/stage1/test/reassign_to_array_parameter.zig b/test/compile_errors/stage1/test/reassign_to_array_parameter.zig
new file mode 100644
index 0000000000..a222150a2c
--- /dev/null
+++ b/test/compile_errors/stage1/test/reassign_to_array_parameter.zig
@@ -0,0 +1,10 @@
+fn reassign(a: [3]f32) void {
+    a = [3]f32{4, 5, 6};
+}
+export fn entry() void {
+    reassign(.{1, 2, 3});
+}
+
+// reassign to array parameter
+//
+// tmp.zig:2:15: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/test/reassign_to_slice_parameter.zig b/test/compile_errors/stage1/test/reassign_to_slice_parameter.zig
new file mode 100644
index 0000000000..a8e555182a
--- /dev/null
+++ b/test/compile_errors/stage1/test/reassign_to_slice_parameter.zig
@@ -0,0 +1,10 @@
+pub fn reassign(s: []const u8) void {
+    s = s[0..];
+}
+export fn entry() void {
+    reassign("foo");
+}
+
+// reassign to slice parameter
+//
+// tmp.zig:2:10: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/test/reassign_to_struct_parameter.zig b/test/compile_errors/stage1/test/reassign_to_struct_parameter.zig
new file mode 100644
index 0000000000..018548ab32
--- /dev/null
+++ b/test/compile_errors/stage1/test/reassign_to_struct_parameter.zig
@@ -0,0 +1,13 @@
+const S = struct {
+    x: u32,
+};
+fn reassign(s: S) void {
+    s = S{.x = 2};
+}
+export fn entry() void {
+    reassign(S{.x = 3});
+}
+
+// reassign to struct parameter
+//
+// tmp.zig:5:10: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/test/reference_to_const_data.zig b/test/compile_errors/stage1/test/reference_to_const_data.zig
new file mode 100644
index 0000000000..d785eb648e
--- /dev/null
+++ b/test/compile_errors/stage1/test/reference_to_const_data.zig
@@ -0,0 +1,27 @@
+export fn foo() void {
+    var ptr = &[_]u8{0,0,0,0};
+    ptr[1] = 2;
+}
+export fn bar() void {
+    var ptr = &@as(u32, 2);
+    ptr.* = 2;
+}
+export fn baz() void {
+    var ptr = &true;
+    ptr.* = false;
+}
+export fn qux() void {
+    const S = struct{
+        x: usize,
+        y: usize,
+    };
+    var ptr = &S{.x=1,.y=2};
+    ptr.x = 2;
+}
+
+// reference to const data
+//
+// tmp.zig:3:14: error: cannot assign to constant
+// tmp.zig:7:13: error: cannot assign to constant
+// tmp.zig:11:13: error: cannot assign to constant
+// tmp.zig:19:13: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/test/reify_typeOf_with_incompatible_arguments.zig b/test/compile_errors/stage1/test/reify_typeOf_with_incompatible_arguments.zig
new file mode 100644
index 0000000000..97ee7aaf1b
--- /dev/null
+++ b/test/compile_errors/stage1/test/reify_typeOf_with_incompatible_arguments.zig
@@ -0,0 +1,9 @@
+export fn entry() void {
+    var var_1: f32 = undefined;
+    var var_2: u32 = undefined;
+    _ = @TypeOf(var_1, var_2);
+}
+
+// @TypeOf with incompatible arguments
+//
+// tmp.zig:4:9: error: incompatible types: 'f32' and 'u32'
diff --git a/test/compile_errors/stage1/test/reify_typeOf_with_no_arguments.zig b/test/compile_errors/stage1/test/reify_typeOf_with_no_arguments.zig
new file mode 100644
index 0000000000..e18b9e66b7
--- /dev/null
+++ b/test/compile_errors/stage1/test/reify_typeOf_with_no_arguments.zig
@@ -0,0 +1,7 @@
+export fn entry() void {
+    _ = @TypeOf();
+}
+
+// @TypeOf with no arguments
+//
+// tmp.zig:2:9: error: expected at least 1 argument, found 0
diff --git a/test/compile_errors/stage1/test/reject_extern_function_definitions_with_body.zig b/test/compile_errors/stage1/test/reject_extern_function_definitions_with_body.zig
new file mode 100644
index 0000000000..024080a6bc
--- /dev/null
+++ b/test/compile_errors/stage1/test/reject_extern_function_definitions_with_body.zig
@@ -0,0 +1,7 @@
+extern "c" fn definitelyNotInLibC(a: i32, b: i32) i32 {
+    return a + b;
+}
+
+// reject extern function definitions with body
+//
+// tmp.zig:1:1: error: extern functions have no body
diff --git a/test/compile_errors/stage1/test/reject_extern_variables_with_initializers.zig b/test/compile_errors/stage1/test/reject_extern_variables_with_initializers.zig
new file mode 100644
index 0000000000..d3f65ff0cb
--- /dev/null
+++ b/test/compile_errors/stage1/test/reject_extern_variables_with_initializers.zig
@@ -0,0 +1,5 @@
+extern var foo: int = 2;
+
+// reject extern variables with initializers
+//
+// tmp.zig:1:23: error: extern variables have no initializers
diff --git a/test/compile_errors/stage1/test/repeated_invalid_field_access_to_generic_function_returning_type_crashes_compiler_2655.zig b/test/compile_errors/stage1/test/repeated_invalid_field_access_to_generic_function_returning_type_crashes_compiler_2655.zig
new file mode 100644
index 0000000000..c419a6ae83
--- /dev/null
+++ b/test/compile_errors/stage1/test/repeated_invalid_field_access_to_generic_function_returning_type_crashes_compiler_2655.zig
@@ -0,0 +1,11 @@
+pub fn A() type {
+    return Q;
+}
+test "1" {
+    _ = A().a;
+    _ = A().a;
+}
+
+// repeated invalid field access to generic function returning type crashes compiler. #2655
+//
+// tmp.zig:2:12: error: use of undeclared identifier 'Q'
diff --git a/test/compile_errors/stage1/test/return_invalid_type_from_test.zig b/test/compile_errors/stage1/test/return_invalid_type_from_test.zig
new file mode 100644
index 0000000000..e7aeab3be7
--- /dev/null
+++ b/test/compile_errors/stage1/test/return_invalid_type_from_test.zig
@@ -0,0 +1,5 @@
+test "example" { return 1; }
+
+// return invalid type from test
+//
+// tmp.zig:1:25: error: expected type 'void', found 'comptime_int'
diff --git a/test/compile_errors/stage1/test/shift_on_type_with_non-power-of-two_size.zig b/test/compile_errors/stage1/test/shift_on_type_with_non-power-of-two_size.zig
new file mode 100644
index 0000000000..d76406223d
--- /dev/null
+++ b/test/compile_errors/stage1/test/shift_on_type_with_non-power-of-two_size.zig
@@ -0,0 +1,31 @@
+export fn entry() void {
+    const S = struct {
+        fn a() void {
+            var x: u24 = 42;
+            _ = x >> 24;
+        }
+        fn b() void {
+            var x: u24 = 42;
+            _ = x << 24;
+        }
+        fn c() void {
+            var x: u24 = 42;
+            _ = @shlExact(x, 24);
+        }
+        fn d() void {
+            var x: u24 = 42;
+            _ = @shrExact(x, 24);
+        }
+    };
+    S.a();
+    S.b();
+    S.c();
+    S.d();
+}
+
+// shift on type with non-power-of-two size
+//
+// tmp.zig:5:19: error: RHS of shift is too large for LHS type
+// tmp.zig:9:19: error: RHS of shift is too large for LHS type
+// tmp.zig:13:17: error: RHS of shift is too large for LHS type
+// tmp.zig:17:17: error: RHS of shift is too large for LHS type
diff --git a/test/compile_errors/stage1/test/shuffle_with_selected_index_past_first_vector_length.zig b/test/compile_errors/stage1/test/shuffle_with_selected_index_past_first_vector_length.zig
new file mode 100644
index 0000000000..c45eb4a0e2
--- /dev/null
+++ b/test/compile_errors/stage1/test/shuffle_with_selected_index_past_first_vector_length.zig
@@ -0,0 +1,12 @@
+export fn entry() void {
+    const v: @import("std").meta.Vector(4, u32) = [4]u32{ 10, 11, 12, 13 };
+    const x: @import("std").meta.Vector(4, u32) = [4]u32{ 14, 15, 16, 17 };
+    var z = @shuffle(u32, v, x, [8]i32{ 0, 1, 2, 3, 7, 6, 5, 4 });
+    _ = z;
+}
+
+// @shuffle with selected index past first vector length
+//
+// tmp.zig:4:39: error: mask index '4' has out-of-bounds selection
+// tmp.zig:4:27: note: selected index '7' out of bounds of @Vector(4, u32)
+// tmp.zig:4:30: note: selections from the second vector are specified with negative numbers
diff --git a/test/compile_errors/stage1/test/switch_ranges_endpoints_are_validated.zig b/test/compile_errors/stage1/test/switch_ranges_endpoints_are_validated.zig
new file mode 100644
index 0000000000..4c0545ea92
--- /dev/null
+++ b/test/compile_errors/stage1/test/switch_ranges_endpoints_are_validated.zig
@@ -0,0 +1,13 @@
+pub export fn entry() void {
+    var x: i32 = 0;
+    switch (x) {
+        6...1 => {},
+        -1...-5 => {},
+        else => unreachable,
+    }
+}
+
+// switch ranges endpoints are validated
+//
+// tmp.zig:4:9: error: range start value is greater than the end value
+// tmp.zig:5:9: error: range start value is greater than the end value
diff --git a/test/compile_errors/stage1/test/switching_with_exhaustive_enum_has___prong_.zig b/test/compile_errors/stage1/test/switching_with_exhaustive_enum_has___prong_.zig
new file mode 100644
index 0000000000..b132b7834e
--- /dev/null
+++ b/test/compile_errors/stage1/test/switching_with_exhaustive_enum_has___prong_.zig
@@ -0,0 +1,16 @@
+const E = enum{
+    a,
+    b,
+};
+pub export fn entry() void {
+    var e: E = .b;
+    switch (e) {
+        .a => {},
+        .b => {},
+        _ => {},
+    }
+}
+
+// switching with exhaustive enum has '_' prong 
+//
+// tmp.zig:7:5: error: switch on exhaustive enum has `_` prong
diff --git a/test/compile_errors/stage1/test/switching_with_non-exhaustive_enums.zig b/test/compile_errors/stage1/test/switching_with_non-exhaustive_enums.zig
new file mode 100644
index 0000000000..53cd88e68c
--- /dev/null
+++ b/test/compile_errors/stage1/test/switching_with_non-exhaustive_enums.zig
@@ -0,0 +1,32 @@
+const E = enum(u8) {
+    a,
+    b,
+    _,
+};
+const U = union(E) {
+    a: i32,
+    b: u32,
+};
+pub export fn entry() void {
+    var e: E = .b;
+    switch (e) { // error: switch not handling the tag `b`
+        .a => {},
+        _ => {},
+    }
+    switch (e) { // error: switch on non-exhaustive enum must include `else` or `_` prong
+        .a => {},
+        .b => {},
+    }
+    var u = U{.a = 2};
+    switch (u) { // error: `_` prong not allowed when switching on tagged union
+        .a => {},
+        .b => {},
+        _ => {},
+    }
+}
+
+// switching with non-exhaustive enums
+//
+// tmp.zig:12:5: error: enumeration value 'E.b' not handled in switch
+// tmp.zig:16:5: error: switch on non-exhaustive enum must include `else` or `_` prong
+// tmp.zig:21:5: error: `_` prong not allowed when switching on tagged union
diff --git a/test/compile_errors/stage1/test/tagName_on_invalid_value_of_non-exhaustive_enum.zig b/test/compile_errors/stage1/test/tagName_on_invalid_value_of_non-exhaustive_enum.zig
new file mode 100644
index 0000000000..139c7c7a23
--- /dev/null
+++ b/test/compile_errors/stage1/test/tagName_on_invalid_value_of_non-exhaustive_enum.zig
@@ -0,0 +1,8 @@
+test "enum" {
+    const E = enum(u8) {A, B, _};
+    _ = @tagName(@intToEnum(E, 5));
+}
+
+// @tagName on invalid value of non-exhaustive enum
+//
+// tmp.zig:3:18: error: no tag by value 5
diff --git a/test/compile_errors/stage1/test/type_mismatch_in_C_prototype_with_varargs.zig b/test/compile_errors/stage1/test/type_mismatch_in_C_prototype_with_varargs.zig
new file mode 100644
index 0000000000..437cca8772
--- /dev/null
+++ b/test/compile_errors/stage1/test/type_mismatch_in_C_prototype_with_varargs.zig
@@ -0,0 +1,11 @@
+const fn_ty = ?fn ([*c]u8, ...) callconv(.C) void;
+extern fn fn_decl(fmt: [*:0]u8, ...) void;
+
+export fn main() void {
+    const x: fn_ty = fn_decl;
+    _ = x;
+}
+
+// type mismatch in C prototype with varargs
+//
+// tmp.zig:5:22: error: expected type 'fn([*c]u8, ...) callconv(.C) void', found 'fn([*:0]u8, ...) callconv(.C) void'
diff --git a/test/compile_errors/stage1/test/type_mismatch_with_tuple_concatenation.zig b/test/compile_errors/stage1/test/type_mismatch_with_tuple_concatenation.zig
new file mode 100644
index 0000000000..ce5e4d4629
--- /dev/null
+++ b/test/compile_errors/stage1/test/type_mismatch_with_tuple_concatenation.zig
@@ -0,0 +1,8 @@
+export fn entry() void {
+    var x = .{};
+    x = x ++ .{ 1, 2, 3 };
+}
+
+// type mismatch with tuple concatenation
+//
+// tmp.zig:3:11: error: expected type 'struct:2:14', found 'struct:3:11'
diff --git a/test/compile_errors/stage1/test/unused_variable_error_on_errdefer.zig b/test/compile_errors/stage1/test/unused_variable_error_on_errdefer.zig
new file mode 100644
index 0000000000..eb92776938
--- /dev/null
+++ b/test/compile_errors/stage1/test/unused_variable_error_on_errdefer.zig
@@ -0,0 +1,11 @@
+fn foo() !void {
+    errdefer |a| unreachable;
+    return error.A;
+}
+export fn entry() void {
+    foo() catch unreachable;
+}
+
+// unused variable error on errdefer
+//
+// tmp.zig:2:15: error: unused variable: 'a'
diff --git a/test/compile_errors/stage2/embed_outside_package.zig b/test/compile_errors/stage2/embed_outside_package.zig
new file mode 100644
index 0000000000..8df6b3d9af
--- /dev/null
+++ b/test/compile_errors/stage2/embed_outside_package.zig
@@ -0,0 +1,7 @@
+export fn a() usize {
+    return @embedFile("/root/foo").len;
+}
+
+// embed outside package
+//
+//:2:23: error: embed of file outside package path: '/root/foo'
diff --git a/test/compile_errors/stage2/import_outside_package.zig b/test/compile_errors/stage2/import_outside_package.zig
new file mode 100644
index 0000000000..f9de9202de
--- /dev/null
+++ b/test/compile_errors/stage2/import_outside_package.zig
@@ -0,0 +1,7 @@
+export fn a() usize {
+    return @import("../../above.zig").len;
+}
+
+// import outside package
+//
+// :2:20: error: import of file outside package path: '../../above.zig'
diff --git a/test/compile_errors/stage2/out_of_bounds_index.zig b/test/compile_errors/stage2/out_of_bounds_index.zig
new file mode 100644
index 0000000000..3c34bb5d0f
--- /dev/null
+++ b/test/compile_errors/stage2/out_of_bounds_index.zig
@@ -0,0 +1,28 @@
+comptime {
+    var array = [_:0]u8{ 1, 2, 3, 4 };
+    var src_slice: [:0]u8 = &array;
+    var slice = src_slice[2..6];
+    _ = slice;
+}
+comptime {
+    var array = [_:0]u8{ 1, 2, 3, 4 };
+    var slice = array[2..6];
+    _ = slice;
+}
+comptime {
+    var array = [_]u8{ 1, 2, 3, 4 };
+    var slice = array[2..5];
+    _ = slice;
+}
+comptime {
+    var array = [_:0]u8{ 1, 2, 3, 4 };
+    var slice = array[3..2];
+    _ = slice;
+}
+
+// out of bounds indexing
+//
+// :4:26: error: end index 6 out of bounds for slice of length 4 +1 (sentinel)
+// :9:22: error: end index 6 out of bounds for array of length 4 +1 (sentinel)
+// :14:22: error: end index 5 out of bounds for array of length 4
+// :19:22: error: start index 3 is larger than end index 2