delete bad behavior test

As pointed out in the issue this behavior test branches on an undefined
value. That's not valid Zig code.

Also behavior tests should not depend on the standard library in this
manner. They need to minimally isolate the specific language thing that
is being tested.

Closes #12681

1 files changed, 0 insertions, 27 deletions

diff --git a/test/behavior/basic.zig b/test/behavior/basic.zig
index 9747206a76..777784f48c 100644
--- a/test/behavior/basic.zig
+++ b/test/behavior/basic.zig
@@ -1039,33 +1039,6 @@ test "inline call of function with a switch inside the return statement" {
     try expect(S.foo(1) == 1);
 }
 
-test "namespace lookup ignores decl causing the lookup" {
-    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
-    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
-    if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
-
-    if (builtin.zig_backend == .stage2_llvm) {
-        // regressed with LLVM 15
-        // https://github.com/ziglang/zig/issues/12681
-        return error.SkipZigTest;
-    }
-
-    const S = struct {
-        fn Mixin(comptime T: type) type {
-            return struct {
-                fn foo() void {
-                    const set = std.EnumSet(T.E).init(undefined);
-                    _ = set;
-                }
-            };
-        }
-
-        const E = enum { a, b };
-        usingnamespace Mixin(@This());
-    };
-    _ = S.foo();
-}
-
 test "ambiguous reference error ignores current declaration" {
     const S = struct {
         const foo = 666;