bug159.go

     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  import "os"
    10  
    11  func main() {
    12  	ok := true;
    13  	var a, b, c, x, y, z int;
    14  	f := func() int { b--; return -b };
    15  
    16  	// this fails on 6g: apparently it rewrites
    17  	// the list into
    18  	//	z = f();
    19  	//	y = f();
    20  	//	x = f();
    21  	// so that the values come out backward.
    22  	x, y, z = f(), f(), f();
    23  	if x != 1 || y != 2 || z != 3 {
    24  		println("xyz: expected 1 2 3 got", x, y, z);
    25  		ok = false;
    26  	}
    27  
    28  	// this fails on 6g too.  one of the function calls
    29  	// happens after assigning to b.
    30  	a, b, c = f(), f(), f();
    31  	if a != 4 || b != 5 || c != 6 {
    32  		println("abc: expected 4 5 6 got", a, b, c);
    33  		ok = false;
    34  	}
    35  
    36  	if !ok {
    37  		os.Exit(1);
    38  	}
    39  }
    40
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