| // run |
| |
| // Copyright 2012 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. |
| |
| // Order of operations in select. |
| |
| package main |
| |
| func main() { |
| c := make(chan int, 1) |
| x := 0 |
| select { |
| case c <- x: // should see x = 0, not x = 42 (after makec) |
| case <-makec(&x): // should be evaluated only after c and x on previous line |
| } |
| y := <-c |
| if y != 0 { |
| panic(y) |
| } |
| } |
| |
| func makec(px *int) chan bool { |
| if false { for {} } |
| *px = 42 |
| return make(chan bool, 0) |
| } |
