// errorcheck

// Copyright 2010 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.

// https://code.google.com/p/gofrontend/issues/detail?id=1

package main

func f1() {
	a, b := f()	// ERROR "mismatch|does not match"
	_ = a
	_ = b
}

func f2() {
	var a, b int
	a, b = f()	// ERROR "mismatch|does not match"
	_ = a
	_ = b
}

func f() int {
	return 1;
}
