| // 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. | |
| package p1 | |
| type Magic int | |
| type T struct { | |
| x interface{} | |
| } | |
| func (t *T) M() bool { | |
| _, ok := t.x.(Magic) | |
| return ok | |
| } | |
| func F(t *T) { | |
| println(t) | |
| } |