go escape_runtime_atomic 源码
golang escape_runtime_atomic 代码
文件路径：/test/escape_runtime_atomic.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 runtime/internal/atomic.
package escape
import (
"runtime/internal/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))
}
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