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Filename : issue6055.go

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// 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.

package main

import "runtime"

type Closer interface {
	Close()
}

func nilInterfaceDeferCall() {
	defer func() {
		// make sure a traceback happens with jmpdefer on the stack
		runtime.GC()
	}()
	var x Closer
	defer x.Close()
}

func shouldPanic(f func()) {
	defer func() {
		if recover() == nil {
			panic("did not panic")
		}
	}()
	f()
}

func main() {
	shouldPanic(nilInterfaceDeferCall)
}