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![Emmanuel Odeke](/assets/img/avatar_default.png)
Follows suit with https://go-review.googlesource.com/#/c/20111. Generated by running $ grep -R 'Go Authors. All' * | cut -d":" -f1 | while read F;do perl -pi -e 's/Go Authors. All/Go Authors. All/g' $F;done The code in cmd/internal/unvendor wasn't changed. Fixes #15213 Change-Id: I4f235cee0a62ec435f9e8540a1ec08ae03b1a75f Reviewed-on: https://go-review.googlesource.com/21819 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
161 lines
4.2 KiB
Go
161 lines
4.2 KiB
Go
// 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 when assigning to indirections.
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package escape
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var sink interface{}
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type ConstPtr struct {
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p *int
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c ConstPtr2
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x **ConstPtr
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}
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type ConstPtr2 struct {
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p *int
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i int
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}
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func constptr0() {
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i := 0 // ERROR "moved to heap: i"
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x := &ConstPtr{} // ERROR "&ConstPtr literal does not escape"
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// BAD: i should not escape here
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x.p = &i // ERROR "&i escapes to heap"
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_ = x
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}
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func constptr01() *ConstPtr {
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i := 0 // ERROR "moved to heap: i"
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x := &ConstPtr{} // ERROR "&ConstPtr literal escapes to heap"
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x.p = &i // ERROR "&i escapes to heap"
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return x
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}
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func constptr02() ConstPtr {
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i := 0 // ERROR "moved to heap: i"
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x := &ConstPtr{} // ERROR "&ConstPtr literal does not escape"
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x.p = &i // ERROR "&i escapes to heap"
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return *x
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}
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func constptr03() **ConstPtr {
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i := 0 // ERROR "moved to heap: i"
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x := &ConstPtr{} // ERROR "&ConstPtr literal escapes to heap" "moved to heap: x"
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x.p = &i // ERROR "&i escapes to heap"
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return &x // ERROR "&x escapes to heap"
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}
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func constptr1() {
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i := 0 // ERROR "moved to heap: i"
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x := &ConstPtr{} // ERROR "&ConstPtr literal escapes to heap"
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x.p = &i // ERROR "&i escapes to heap"
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sink = x // ERROR "x escapes to heap"
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}
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func constptr2() {
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i := 0 // ERROR "moved to heap: i"
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x := &ConstPtr{} // ERROR "&ConstPtr literal does not escape"
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x.p = &i // ERROR "&i escapes to heap"
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sink = *x // ERROR "\*x escapes to heap"
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}
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func constptr4() *ConstPtr {
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p := new(ConstPtr) // ERROR "new\(ConstPtr\) escapes to heap"
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*p = *&ConstPtr{} // ERROR "&ConstPtr literal does not escape"
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return p
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}
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func constptr5() *ConstPtr {
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p := new(ConstPtr) // ERROR "new\(ConstPtr\) escapes to heap"
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p1 := &ConstPtr{} // ERROR "&ConstPtr literal does not escape"
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*p = *p1
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return p
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}
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// BAD: p should not escape here
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func constptr6(p *ConstPtr) { // ERROR "leaking param content: p"
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p1 := &ConstPtr{} // ERROR "&ConstPtr literal does not escape"
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*p1 = *p
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_ = p1
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}
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func constptr7() **ConstPtr {
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p := new(ConstPtr) // ERROR "new\(ConstPtr\) escapes to heap" "moved to heap: p"
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var tmp ConstPtr2
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p1 := &tmp // ERROR "&tmp does not escape"
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p.c = *p1
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return &p // ERROR "&p escapes to heap"
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}
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func constptr8() *ConstPtr {
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p := new(ConstPtr) // ERROR "new\(ConstPtr\) escapes to heap"
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var tmp ConstPtr2
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p.c = *&tmp // ERROR "&tmp does not escape"
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return p
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}
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func constptr9() ConstPtr {
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p := new(ConstPtr) // ERROR "new\(ConstPtr\) does not escape"
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var p1 ConstPtr2
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i := 0 // ERROR "moved to heap: i"
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p1.p = &i // ERROR "&i escapes to heap"
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p.c = p1
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return *p
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}
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func constptr10() ConstPtr {
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x := &ConstPtr{} // ERROR "moved to heap: x" "&ConstPtr literal escapes to heap"
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i := 0 // ERROR "moved to heap: i"
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var p *ConstPtr
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p = &ConstPtr{p: &i, x: &x} // ERROR "&i escapes to heap" "&x escapes to heap" "&ConstPtr literal does not escape"
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var pp **ConstPtr
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pp = &p // ERROR "&p does not escape"
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return **pp
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}
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func constptr11() *ConstPtr {
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i := 0 // ERROR "moved to heap: i"
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p := new(ConstPtr) // ERROR "new\(ConstPtr\) escapes to heap"
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p1 := &ConstPtr{} // ERROR "&ConstPtr literal does not escape"
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p1.p = &i // ERROR "&i escapes to heap"
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*p = *p1
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return p
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}
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func foo(p **int) { // ERROR "foo p does not escape"
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i := 0 // ERROR "moved to heap: i"
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y := p
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*y = &i // ERROR "&i escapes to heap"
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}
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func foo1(p *int) { // ERROR "p does not escape"
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i := 0 // ERROR "moved to heap: i"
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y := &p // ERROR "&p does not escape"
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*y = &i // ERROR "&i escapes to heap"
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}
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func foo2() {
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type Z struct {
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f **int
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}
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x := new(int) // ERROR "moved to heap: x" "new\(int\) escapes to heap"
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sink = &x // ERROR "&x escapes to heap"
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var z Z
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z.f = &x // ERROR "&x does not escape"
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p := z.f
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i := 0 // ERROR "moved to heap: i"
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*p = &i // ERROR "&i escapes to heap"
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}
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var global *byte
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func f() {
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var x byte // ERROR "moved to heap: x"
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global = &*&x // ERROR "&\(\*\(&x\)\) escapes to heap" "&x escapes to heap"
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}
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