bug264.go

     1  // run
     2  
     3  // Copyright 2010 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  // Test case for https://golang.org/issue/692
     8  
     9  package main
    10  
    11  var fooCount = 0
    12  var barCount = 0
    13  var balCount = 0
    14  
    15  func foo() (int, int) {
    16  	fooCount++
    17  	return 0, 0
    18  }
    19  
    20  func bar() (int, int) {
    21  	barCount++
    22  	return 0, 0
    23  }
    24  
    25  func bal() (int, int) {
    26  	balCount++
    27  	return 0, 0
    28  }
    29  
    30  var a, b = foo() // foo is called once
    31  var c, _ = bar() // bar is called twice
    32  var _, _ = bal() // bal is called twice
    33  
    34  func main() {
    35  	if fooCount != 1 {
    36  		panic("fooCount != 1")
    37  	}
    38  	if barCount != 1 {
    39  		panic("barCount != 1")
    40  	}
    41  	if balCount != 1 {
    42  		panic("balCount != 1")
    43  	}
    44  }
    45
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