1// run
2
3// Copyright 2016 The Go Authors. All rights reserved.
4// Use of this source code is governed by a BSD-style
5// license that can be found in the LICENSE file.
6
7// Exchanging two struct fields was compiled incorrectly.
8
9package main
10
11type S struct {
12	i int
13}
14
15func F(c bool, s1, s2 S) (int, int) {
16	if c {
17		s1.i, s2.i = s2.i, s1.i
18	}
19	return s1.i, s2.i
20}
21
22func main() {
23	i, j := F(true, S{1}, S{20})
24	if i != 20 || j != 1 {
25		panic(i+j)
26	}
27}
28