// Copyright 2021 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 T1 struct{} func (t T1) m(int) {} var f1 func(T1) type T2 struct{} func (t T2) m(x int) {} var f2 func(T2) type T3 struct{} func (T3) m(int) {} var f3 func(T3) type T4 struct{} func (T4) m(x int) {} var f4 func(T4) func _() { f1 = T1 /* ERROR "func(T1, int)" */ .m f2 = T2 /* ERROR "func(t T2, x int)" */ .m f3 = T3 /* ERROR "func(T3, int)" */ .m f4 = T4 /* ERROR "func(_ T4, x int)" */ .m }