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 var m = map[int]int{0: 0, 1: 0} 10 var nf = 0 11 var i int 12 13 func multi() (int, int) { return 1, 2 } 14 15 func xxx() { 16 var c chan int 17 x, ok := <-c 18 19 var m map[int]int 20 x, ok = m[1] 21 22 var i interface{} 23 var xx int 24 xx, ok = i.(int) 25 26 a, b := multi() 27 28 _, _, _, _, _ = x, ok, xx, a, b 29 } 30 31 func f() map[int]int { 32 nf++ 33 return m 34 } 35 36 func g() *int { 37 nf++ 38 return &i 39 } 40 41 func main() { 42 f()[0]++ 43 f()[1] += 2 44 *g() %= 2 45 if nf != 3 { 46 println("too many calls:", nf) 47 panic("fail") 48 } 49 50 } 51
