// 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) }