mirror of
https://github.com/golang/go
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91 lines
2.1 KiB
Go
91 lines
2.1 KiB
Go
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// errorcheck -0 -m -l
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// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test escape analysis for slices.
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package escape
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var sink interface{}
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func slice0() {
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var s []*int
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// BAD: i should not escape
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i := 0 // ERROR "moved to heap: i"
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s = append(s, &i) // ERROR "&i escapes to heap"
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_ = s
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}
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func slice1() *int {
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var s []*int
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i := 0 // ERROR "moved to heap: i"
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s = append(s, &i) // ERROR "&i escapes to heap"
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return s[0]
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}
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func slice2() []*int {
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var s []*int
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i := 0 // ERROR "moved to heap: i"
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s = append(s, &i) // ERROR "&i escapes to heap"
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return s
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}
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func slice3() *int {
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var s []*int
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i := 0 // ERROR "moved to heap: i"
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s = append(s, &i) // ERROR "&i escapes to heap"
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for _, p := range s {
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return p
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}
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return nil
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}
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func slice4(s []*int) { // ERROR "s does not escape"
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i := 0 // ERROR "moved to heap: i"
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s[0] = &i // ERROR "&i escapes to heap"
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}
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func slice5(s []*int) { // ERROR "s does not escape"
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if s != nil {
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s = make([]*int, 10) // ERROR "make\(\[\]\*int, 10\) does not escape"
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}
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i := 0 // ERROR "moved to heap: i"
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s[0] = &i // ERROR "&i escapes to heap"
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}
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func slice6() {
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s := make([]*int, 10) // ERROR "make\(\[\]\*int, 10\) does not escape"
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// BAD: i should not escape
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i := 0 // ERROR "moved to heap: i"
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s[0] = &i // ERROR "&i escapes to heap"
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_ = s
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}
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func slice7() *int {
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s := make([]*int, 10) // ERROR "make\(\[\]\*int, 10\) does not escape"
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i := 0 // ERROR "moved to heap: i"
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s[0] = &i // ERROR "&i escapes to heap"
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return s[0]
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}
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func slice8() {
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// BAD: i should not escape here
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i := 0 // ERROR "moved to heap: i"
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s := []*int{&i} // ERROR "&i escapes to heap" "literal does not escape"
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_ = s
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}
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func slice9() *int {
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i := 0 // ERROR "moved to heap: i"
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s := []*int{&i} // ERROR "&i escapes to heap" "literal does not escape"
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return s[0]
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}
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func slice10() []*int {
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i := 0 // ERROR "moved to heap: i"
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s := []*int{&i} // ERROR "&i escapes to heap" "literal escapes to heap"
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return s
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}
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