Allow comparison between union tag and enum literal

Closes #2810

1 files changed, 10 insertions, 0 deletions

diff --git a/test/stage1/behavior/union.zig b/test/stage1/behavior/union.zig
index d28a0f8ea4..1f8ca82958 100644
--- a/test/stage1/behavior/union.zig
+++ b/test/stage1/behavior/union.zig
@@ -467,3 +467,13 @@ test "union no tag with struct member" {
     var u = Union{ .s = Struct{} };
     u.foo();
 }
+
+test "comparison between union and enum literal" {
+    var x = Payload{.A = 42};
+    expect(x == .A);
+    expect(x != .B);
+    expect(x != .C);
+    expect((x == .B) == false);
+    expect((x == .C) == false);
+    expect((x != .A) == false);
+}