// run
// Copyright 2012 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.
// Test that when the compiler expands append inline it does not
// overwrite a value before it needs it (issue 3369).
package main
func main() {
s := make([]byte, 5, 6)
copy(s, "12346")
s = append(s[:len(s)-1], '5', s[len(s)-1])
if string(s) != "123456" {
panic(s)
}
}