// errchk $G $D/$F.go | |
// 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() { | |
} |