go method2 源码
golang method2 代码
文件路径：/test/method2.go
// errorcheck
// 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.
// Verify that pointers and interface types cannot be method receivers.
// Does not compile.
package main
type T struct {
a int
}
type P *T
type P1 *T
func (p P) val() int { return 1 } // ERROR "receiver.* pointer|invalid pointer or interface receiver|invalid receiver"
func (p *P1) val() int { return 1 } // ERROR "receiver.* pointer|invalid pointer or interface receiver|invalid receiver"
type I interface{}
type I1 interface{}
func (p I) val() int { return 1 } // ERROR "receiver.*interface|invalid pointer or interface receiver"
func (p *I1) val() int { return 1 } // ERROR "receiver.*interface|invalid pointer or interface receiver"
type Val interface {
val() int
}
var _ = (*Val).val // ERROR "method|type \*Val is pointer to interface, not interface"
var v Val
var pv = &v
var _ = pv.val() // ERROR "undefined|pointer to interface"
var _ = pv.val // ERROR "undefined|pointer to interface"
func (t *T) g() int { return t.a }
var _ = (T).g() // ERROR "needs pointer receiver|undefined|method requires pointer|cannot call pointer method"
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