Fixed intToPtr to fn type when the address is hardcoded (#1842)

* Fixed intToPtr to fn type

* Added test

* Import inttoptr.zig in behavior.zig

3 files changed, 15 insertions, 0 deletions

diff --git a/src/ir.cpp b/src/ir.cpp
index 76dd6c6391..028582f87f 100644
--- a/src/ir.cpp
+++ b/src/ir.cpp
@@ -12495,6 +12495,7 @@ static IrInstruction *ir_analyze_instruction_decl_var(IrAnalyze *ira, IrInstruct
     case ReqCompTimeNo:
         if (casted_init_value->value.special == ConstValSpecialStatic &&
             casted_init_value->value.type->id == ZigTypeIdFn &&
+            casted_init_value->value.data.x_ptr.special != ConstPtrSpecialHardCodedAddr &&
             casted_init_value->value.data.x_ptr.data.fn.fn_entry->fn_inline == FnInlineAlways)
         {
             var_class_requires_const = true;
diff --git a/test/behavior.zig b/test/behavior.zig
index e32063dec8..8090359772 100644
--- a/test/behavior.zig
+++ b/test/behavior.zig
@@ -42,6 +42,7 @@ comptime {
     _ = @import("cases/if.zig");
     _ = @import("cases/import.zig");
     _ = @import("cases/incomplete_struct_param_tld.zig");
+    _ = @import("cases/inttoptr.zig");
     _ = @import("cases/ir_block_deps.zig");
     _ = @import("cases/math.zig");
     _ = @import("cases/merge_error_sets.zig");
diff --git a/test/cases/inttoptr.zig b/test/cases/inttoptr.zig
new file mode 100644
index 0000000000..6695352383
--- /dev/null
+++ b/test/cases/inttoptr.zig
@@ -0,0 +1,13 @@
+const builtin = @import("builtin");
+const std = @import("std");
+const assertOrPanic = std.debug.assertOrPanic;
+
+test "casting random address to function pointer" {
+    randomAddressToFunction();
+    comptime randomAddressToFunction();
+}
+
+fn randomAddressToFunction() void {
+    var addr: usize = 0xdeadbeef;
+    var ptr = @intToPtr(fn () void, addr);
+}