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// errchk $G $D/$F.go

// 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.

// Check that interface{M()} = *interface{M()} produces a compiler error.

package main

type Inst interface {

        Next() *Inst

}

type Regexp struct {

        code  []Inst

        start Inst

}

type Start struct {

        foo *Inst

}

func (start *Start) Next() *Inst { return nil }

func AddInst(Inst) *Inst {

        print("ok in addinst\n")

        return nil

}

func main() {

        print("call addinst\n")

        var x Inst = AddInst(new(Start)) // ERROR "pointer to interface"

        print("return from  addinst\n")

        var y *Inst = new(Start)  // ERROR "pointer to interface|incompatible type"

}