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// $G $D/$F.go && $L $F.$A && ./$A.out || echo BUG

// Copyright 2010 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.

// Test case for http://code.google.com/p/go/issues/detail?id=692

package main

var fooCount = 0
var barCount = 0
var balCount = 0

func foo() (int, int) {
        fooCount++
        return 0, 0
}

func bar() (int, int) {
        barCount++
        return 0, 0
}

func bal() (int, int) {
        balCount++
        return 0, 0
}

var a, b = foo() // foo is called once
var c, _ = bar() // bar is called twice
var _, _ = bal() // bal is called twice

func main() {
        if fooCount != 1 {
                panic("fooCount != 1")
        }
        if barCount != 1 {
                panic("barCount != 1")
        }
        if balCount != 1 {
                panic("balCount != 1")
        }
}