| // 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") | |
| } | |
| } |