| // errorcheck -lang=go1.13 | |
| // Copyright 2019 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 p | |
| type I interface { M() } | |
| type _ interface { | |
| I | |
| I // ERROR "duplicate method M" | |
| } |