| // run | |
| // Copyright 2013 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 | |
| func F(xi, yi interface{}) uint64 { | |
| x, y := xi.(uint64), yi.(uint64) | |
| return x &^ y | |
| } | |
| func G(xi, yi interface{}) uint64 { | |
| return xi.(uint64) &^ yi.(uint64) // generates incorrect code | |
| } | |
| func main() { | |
| var x, y uint64 = 0, 1 << 63 | |
| f := F(x, y) | |
| g := G(x, y) | |
| if f != 0 || g != 0 { | |
| println("F", f, "G", g) | |
| panic("bad") | |
| } | |
| } |