stage2 llvm: ensure `@tagName` functions are unique

1 files changed, 21 insertions, 0 deletions

diff --git a/test/behavior/enum.zig b/test/behavior/enum.zig
index 602ad47b59..709d30af33 100644
--- a/test/behavior/enum.zig
+++ b/test/behavior/enum.zig
@@ -1107,3 +1107,24 @@ test "enum literal in array literal" {
     try expect(array[0] == .one);
     try expect(array[1] == .two);
 }
+
+test "tag name functions are unique" {
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
+    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+
+    {
+        const E = enum { a, b };
+        var b = E.a;
+        var a = @tagName(b);
+        _ = a;
+    }
+    {
+        const E = enum { a, b, c, d, e, f };
+        var b = E.a;
+        var a = @tagName(b);
+        _ = a;
+    }
+}