1// errorcheck -lang=go1.13
2
3// Copyright 2019 The Go Authors. All rights reserved.
4// Use of this source code is governed by a BSD-style
5// license that can be found in the LICENSE file.
6
7package p
8
9type I interface{ M() }
10
11type _ interface {
12	I
13	I // ERROR "duplicate method M"
14}
15