// 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'" | |
} |