various fixes

 * comptime expression is a block expression as it should be
 * fix var args when number of args passed is 0
 * implement const value equality for structs
 * fix indent when rendering container decl AST
 * IR: prevent duplicate generation of code when it is partially
   compile-time evaluated
 * implement compile time struct field pointer evaluation
 * fix compile time evaluation of slicing

3 files changed, 16 insertions, 1 deletions

diff --git a/test/cases/eval.zig b/test/cases/eval.zig
index 4b6a095726..2d6c6a8b94 100644
--- a/test/cases/eval.zig
+++ b/test/cases/eval.zig
@@ -1,4 +1,5 @@
 const assert = @import("std").debug.assert;
+const str = @import("std").str;
 
 fn compileTimeRecursion() {
     @setFnTest(this);
@@ -161,3 +162,16 @@ fn staticallyInitializedArrayLiteral() {
     assert(y[3] == 4);
 }
 const st_init_arr_lit_x = []u8{1,2,3,4};
+
+
+fn constSlice() {
+    @setFnTest(this);
+
+    comptime {
+        const a = "1234567890";
+        assert(a.len == 10);
+        const b = a[1...2];
+        assert(b.len == 1);
+        assert(b[0] == '2');
+    }
+}
diff --git a/test/cases/generics.zig b/test/cases/generics.zig
index 069b468966..822c7e0833 100644
--- a/test/cases/generics.zig
+++ b/test/cases/generics.zig
@@ -13,7 +13,7 @@ fn max(comptime T: type, a: T, b: T) -> T {
 }
 
 fn add(comptime a: i32, b: i32) -> i32 {
-    return comptime {a} + b;
+    return (comptime {a}) + b;
 }
 
 const the_max = max(u32, 1234, 5678);
diff --git a/test/cases/var_args.zig b/test/cases/var_args.zig
index 6b30edd258..680380d7d2 100644
--- a/test/cases/var_args.zig
+++ b/test/cases/var_args.zig
@@ -13,4 +13,5 @@ fn testAddArbitraryArgs() {
 
     assert(add(i32(1), i32(2), i32(3), i32(4)) == 10);
     assert(add(i32(1234)) == 1234);
+    assert(add() == 0);
 }