// run // 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://golang.org/issue/662 package main import "fmt" func f() (int, int) { return 1, 2 } func main() { s := fmt.Sprint(f()) if s != "1 2" { // with bug, was "{1 2}" println("BUG") } }