1// errorcheck
2
3// Copyright 2011 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// Issue 1722.
8
9// Check that the error messages says
10//	bug337.go:16: len("foo") not used
11// and not
12//	bug337.go:16: 3 not used
13
14package main
15
16func main() {
17	len("foo")	// ERROR "len|value computed is not used"
18}
19
20