go source for verification 2026-05-22

test/fixedbugs/bug474.go

@@ -0,0 +1,29 @@
+// 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.
+
+// Bug in method values: escape analysis was off.
+
+package main
+
+import "sync"
+
+var called = false
+
+type T struct {
+	once sync.Once
+}
+
+func (t *T) M() {
+	called = true
+}
+
+func main() {
+	var t T
+	t.once.Do(t.M)
+	if !called {
+		panic("not called")
+	}
+}