go source for verification 2026-05-22

test/fixedbugs/issue6269.go

@@ -0,0 +1,39 @@
+// run
+
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// issue 6269: name collision on method names for function local types.
+
+package main
+
+type foo struct{}
+
+func (foo) Error() string {
+	return "ok"
+}
+
+type bar struct{}
+
+func (bar) Error() string {
+	return "fail"
+}
+
+func unused() {
+	type collision struct {
+		bar
+	}
+	_ = collision{}
+}
+
+func main() {
+	type collision struct {
+		foo
+	}
+	s := error(collision{})
+	if str := s.Error(); str != "ok" {
+		println("s.Error() ==", str)
+		panic(`s.Error() != "ok"`)
+	}
+}