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go/test/fixedbugs/issue9017.go
Chris Manghane b59dd94f33 cmd/internal/gc: method selector should not auto-deref named pointer type
Fixes #9017.

Change-Id: I26cb1e7d6e137ff145773169cfe2d8bd4e1b339c
Reviewed-on: https://go-review.googlesource.com/1252
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Chris Manghane <cmang@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-02-25 19:27:30 +00:00

58 lines
780 B
Go

// errorcheck
// Copyright 2014 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.
// Issue 9017: Method selector shouldn't automatically dereference a named pointer type.
package main
type T struct{ x int }
func (T) mT() {}
type S struct {
T
}
func (S) mS() {}
type P *S
type I interface {
mT()
}
func main() {
var s S
s.T.mT()
s.mT() // == s.T.mT()
var i I
_ = i
i = s.T
i = s
var ps = &s
ps.mS()
ps.T.mT()
ps.mT() // == ps.T.mT()
i = ps.T
i = ps
var p P = ps
(*p).mS()
p.mS() // ERROR "undefined"
i = *p
i = p // ERROR "cannot use|incompatible types"
p.T.mT()
p.mT() // ERROR "undefined"
i = p.T
i = p // ERROR "cannot use|incompatible types"
}