1 // Copyright 2019 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 func A(x interface { 8 X() int 9 }) int { 10 return x.X() 11 } 12 13 func B(x interface { 14 X() int 15 }) int { 16 return x.X() 17 } 18