1 // run 2 3 // Copyright 2013 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 func F(xi, yi interface{}) uint64 { 10 x, y := xi.(uint64), yi.(uint64) 11 return x &^ y 12 } 13 14 func G(xi, yi interface{}) uint64 { 15 return xi.(uint64) &^ yi.(uint64) // generates incorrect code 16 } 17 18 func main() { 19 var x, y uint64 = 0, 1 << 63 20 f := F(x, y) 21 g := G(x, y) 22 if f != 0 || g != 0 { 23 println("F", f, "G", g) 24 panic("bad") 25 } 26 } 27
