golang bug159 代码
文件路径：/test/fixedbugs/bug159.go
/ run
/ 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
import "os"
func main() {
ok := true;
var a, b, c, x, y, z int;
f := func() int { b--; return -b };
/ this fails on 6g: apparently it rewrites
/ the list into
/ z = f();
/ y = f();
/ x = f();
/ so that the values come out backward.
x, y, z = f(), f(), f();
if x != 1 || y != 2 || z != 3 {
println("xyz: expected 1 2 3 got", x, y, z);
ok = false;
}
/ this fails on 6g too. one of the function calls
/ happens after assigning to b.
a, b, c = f(), f(), f();
if a != 4 || b != 5 || c != 6 {
println("abc: expected 4 5 6 got", a, b, c);
ok = false;
}
if !ok {
os.Exit(1);
}
}