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// $G $D/$F.go && $L $F.$A && ./$A.out

// 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 conversion fails when method is missing.

package main

type I interface {
        Foo()
}

func main() {
        shouldPanic(p1)
}

func p1() {
        var s *S
        var i I
        var e interface {}
        e = s
        i = e.(I)
        _ = i
}

type S struct {
}

func shouldPanic(f func()) {
        defer func() {
                if recover() == nil {
                        panic("function should panic")
                }
        }()
        f()
}