github.com/zach-klippenstein/go@v0.0.0-20150108044943-fcfbeb3adf58/test/fixedbugs/bug199.go (about)

     1  // run
     2  
     3  // Copyright 2009 The Go Authors. All rights reserved.
     4  // Use of this source code is governed by a BSD-style
     5  // license that can be found in the LICENSE file.
     6  
     7  package main
     8  
     9  type S struct {
    10  	a []int
    11  }
    12  
    13  var s = &S{make([]int, 10)}
    14  
    15  func main() {
    16  	s.a[f()] = 1 // 6g used to call f twice here
    17  }
    18  
    19  var n int
    20  
    21  func f() int {
    22  	if n++; n > 1 {
    23  		println("f twice")
    24  		panic("fail")
    25  	}
    26  	return 0
    27  }