From cac814cf58ca65ffd8081dca6f2f5b26d822ef5d Mon Sep 17 00:00:00 2001
From: mlugg <mlugg@mlugg.co.uk>
Date: Wed, 5 Feb 2025 20:13:56 +0000
Subject: Sema: fix comparison between error set and comptime-known error union

Resolves: #20613
---
 test/behavior/error.zig | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'test/behavior')

diff --git a/test/behavior/error.zig b/test/behavior/error.zig
index ee9e961884..c915da9a6e 100644
--- a/test/behavior/error.zig
+++ b/test/behavior/error.zig
@@ -1100,3 +1100,14 @@ test "return error union with i65" {
 fn add(x: i65, y: i65) anyerror!i65 {
     return x + y;
 }
+
+test "compare error union to error set" {
+    const S = struct {
+        fn doTheTest(val: error{Foo}!i32) !void {
+            if (error.Foo == val) return error.Unexpected;
+            if (val == error.Foo) return error.Unexpected;
+        }
+    };
+    try S.doTheTest(0);
+    try comptime S.doTheTest(0);
+}
-- 
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