1// errorcheck -0 -d=append,slice
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// Check optimization results for append and slicing.
8
9package main
10
11func a1(x []int, y int) []int {
12	x = append(x, y) // ERROR "append: len-only update \(in local slice\)$"
13	return x
14}
15
16func a2(x []int, y int) []int {
17	return append(x, y)
18}
19
20func a3(x *[]int, y int) {
21	*x = append(*x, y) // ERROR "append: len-only update$"
22}
23
24func s1(x **[]int, xs **string, i, j int) {
25	var z []int
26	z = (**x)[0:] // ERROR "slice: omit slice operation$"
27	println(z)
28
29	var zs string
30	zs = (**xs)[0:] // ERROR "slice: omit slice operation$"
31	println(zs)
32}
33