mirror of
https://github.com/golang/go
synced 2024-11-22 05:24:39 -07:00
4c2b1e0feb
For #65355 Change-Id: I65dd090fb99de9b231af2112c5ccb0eb635db2be Reviewed-on: https://go-review.googlesource.com/c/go/+/560155 Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Michael Pratt <mpratt@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Ibrahim Bazoka <ibrahimbazoka729@gmail.com> Auto-Submit: Emmanuel Odeke <emmanuel@orijtech.com>
34 lines
874 B
Go
34 lines
874 B
Go
// errorcheck -0 -m -l
|
|
|
|
// Copyright 2019 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 escape analysis for internal/runtime/atomic.
|
|
|
|
package escape
|
|
|
|
import (
|
|
"internal/runtime/atomic"
|
|
"unsafe"
|
|
)
|
|
|
|
// BAD: should always be "leaking param: addr to result ~r0 level=1$".
|
|
func Loadp(addr unsafe.Pointer) unsafe.Pointer { // ERROR "leaking param: addr( to result ~r0 level=1)?$"
|
|
return atomic.Loadp(addr)
|
|
}
|
|
|
|
var ptr unsafe.Pointer
|
|
|
|
func Storep() {
|
|
var x int // ERROR "moved to heap: x"
|
|
atomic.StorepNoWB(unsafe.Pointer(&ptr), unsafe.Pointer(&x))
|
|
}
|
|
|
|
func Casp1() {
|
|
// BAD: should always be "does not escape"
|
|
x := new(int) // ERROR "escapes to heap|does not escape"
|
|
var y int // ERROR "moved to heap: y"
|
|
atomic.Casp1(&ptr, unsafe.Pointer(x), unsafe.Pointer(&y))
|
|
}
|