// run

// 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.

package main

type T1 struct {
	x, y int
}
type T2 struct {
	z, w byte
}
type T3 T1

type MyInt int

func (MyInt) m(*T1) {}

func main() {
	{
		var i interface{} = new(T1)
		_, ok1 := i.(*T1)
		_, ok2 := i.(*T2)
		_, ok3 := i.(*T3)
		if !ok1 || ok2 || ok3 {
			println("*T1", ok1, ok2, ok3)
			panic("fail")
		}
	}
	{
		var i interface{} = MyInt(0)
		_, ok1 := i.(interface {
			m(*T1)
		})
		_, ok2 := i.(interface {
			m(*T2)
		})
		_, ok3 := i.(interface {
			m(*T3)
		})
		if !ok1 || ok2 || ok3 {
			println("T", ok1, ok2, ok3)
			panic("fail")
		}
	}
}