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.
9 // Check that the error messages says
10 // bug337.go:16: len("foo") not used
12 // bug337.go:16: 3 not used
17 len("foo") // ERROR "len|value computed is not used"