1 // Copyright 2018 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package p 6 7 import "io" 8 9 type A interface { 10 io.Reader 11 } 12 13 func f(a A) { 14 a.Read(nil) 15 } 16