1// run
2
3// Copyright 2015 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// Gccgo used to miscompile passing a global variable with a
8// zero-sized type to a function.
9
10package main
11
12type T struct {
13	field s
14}
15
16type s struct{}
17
18var X T
19
20func F(_ T, c interface{}) int {
21	return len(c.(string))
22}
23
24func main() {
25	if v := F(X, "hi"); v != 2 {
26		panic(v)
27	}
28}
29