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// +build !amd64,!arm,!amd64p32,!386
// errorcheck -0 -d=append,slice
// Copyright 2015 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.
// Check optimization results for append and slicing.
package main
func a1(x []int, y int) []int {
x = append(x, y) // ERROR "append: len-only update"
return x
}
func a2(x []int, y int) []int {
return append(x, y) // ERROR "append: full update"
}
func a3(x *[]int, y int) {
*x = append(*x, y) // ERROR "append: len-only update"
}
func s1(x **[]int, xs **string, i, j int) {
var z []int
z = (**x)[2:] // ERROR "slice: omit check for 2nd index"
z = (**x)[2:len(**x)] // not yet: "slice: reuse len" "slice: omit check for 2nd index"
z = (**x)[2:cap(**x)] // not yet: "slice: reuse cap" "slice: omit check for 2nd index"
z = (**x)[i:i] // ERROR "slice: reuse 1st index" "slice: omit check for 1st index" "slice: result len == 0"
z = (**x)[1:i:i] // ERROR "slice: reuse 2nd index" "slice: omit check for 2nd index" "slice: result cap == result len"
z = (**x)[i:j:0] // ERROR "slice: omit check for 3rd index"
z = (**x)[i:0:j] // ERROR "slice: omit check for 2nd index"
z = (**x)[0:i:j] // ERROR "slice: omit check for 1st index" "slice: skip base adjustment for 1st index 0"
z = (**x)[0:] // ERROR "slice: omit slice operation"
z = (**x)[2:8] // ERROR "slice: omit check for 1st index" "slice: result len == 6"
z = (**x)[2:2] // ERROR "slice: omit check for 1st index" "slice: result len == 0"
z = (**x)[0:i] // ERROR "slice: omit check for 1st index" "slice: skip base adjustment for 1st index 0"
z = (**x)[2:i:8] // ERROR "slice: result cap == 6"
z = (**x)[i:2:i] // ERROR "slice: reuse 1st index" "slice: result cap == 0" "slice: skip base adjustment for cap == 0"
z = z[0:i] // ERROR "slice: omit check for 1st index" "slice: result cap not computed" "slice: skip base adjustment for 1st index 0" "slice: len-only update"
z = z[0:i : i+1] // ERROR "slice: omit check for 1st index" "slice: skip base adjustment for 1st index 0" "slice: len/cap-only update"
z = z[i : i+1]
println(z)
var zs string
zs = (**xs)[2:] // ERROR "slice: omit check for 2nd index"
zs = (**xs)[2:len(**xs)] // not yet: "slice: reuse len" "slice: omit check for 2nd index"
zs = (**xs)[i:i] // ERROR "slice: reuse 1st index" "slice: omit check for 1st index" "slice: result len == 0" "slice: skip base adjustment for string len == 0"
zs = (**xs)[0:] // ERROR "slice: omit slice operation"
zs = (**xs)[2:8] // ERROR "slice: omit check for 1st index" "slice: result len == 6"
zs = (**xs)[2:2] // ERROR "slice: omit check for 1st index" "slice: result len == 0" "slice: skip base adjustment for string len == 0"
zs = (**xs)[0:i] // ERROR "slice: omit check for 1st index" "slice: skip base adjustment for 1st index 0"
zs = zs[0:i] // ERROR "slice: omit check for 1st index" "slice: skip base adjustment for 1st index 0" "slice: len-only update"
zs = zs[i : i+1]
println(zs)
}
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