| // errorcheck | |
| // 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 | |
| type R interface { duplicate() } | |
| type S interface { duplicate() } | |
| type T interface { R; S } // ERROR "duplicate" | |
| func main() { | |
| } |