| // run | |
| // Copyright 2009 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 | |
| import "os" | |
| type S struct { i int } | |
| func (p *S) Get() int { return p.i } | |
| type Empty interface { | |
| } | |
| type Getter interface { | |
| Get() int; | |
| } | |
| func f1(p Empty) { | |
| switch x := p.(type) { | |
| default: println("failed to match interface", x); os.Exit(1); | |
| case Getter: break; | |
| } | |
| } | |
| func main() { | |
| var s S; | |
| f1(&s); | |
| } |