go source for verification 2026-05-22

test/fixedbugs/issue15975.go

@@ -0,0 +1,36 @@
+// run
+
+// Copyright 2016 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.
+
+package main
+
+var fail bool
+
+type Closer interface {
+	Close()
+}
+
+func nilInterfaceDeferCall() {
+	var x Closer
+	defer x.Close()
+	// if it panics when evaluating x.Close, it should not reach here
+	fail = true
+}
+
+func shouldPanic(f func()) {
+	defer func() {
+		if recover() == nil {
+			panic("did not panic")
+		}
+	}()
+	f()
+}
+
+func main() {
+	shouldPanic(nilInterfaceDeferCall)
+	if fail {
+		panic("fail")
+	}
+}