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// $G $D/$F.go && $L $F.$A && ./$A.out

// Copyright 2009 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

type S struct {

        a []int

}

var s = &S{make([]int, 10)}

func main() {

        s.a[f()] = 1 // 6g used to call f twice here

}

var n int

func f() int {

        if n++; n > 1 {

                println("f twice")

                panic("fail")

        }

        return 0

}