// errchk $G -e $D/$F.go | |
// Copyright 2011 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 I interface { | |
M() | |
} | |
func main(){ | |
var x I | |
switch x.(type) { | |
case string: // ERROR "impossible" | |
println("FAIL") | |
} | |
} |