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escape_sync_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 sync/atomic. package escape import ( "sync/atomic" "unsafe" ) // BAD: should be "leaking param: addr to result ~r1 level=1$". func LoadPointer(addr *unsafe.Pointer) unsafe.Pointer { // ERROR "leaking param: addr$" return atomic.LoadPointer(addr) } var ptr unsafe.Pointer func StorePointer() { var x int // ERROR "moved to heap: x" atomic.StorePointer(&ptr, unsafe.Pointer(&x)) } func SwapPointer() { var x int // ERROR "moved to heap: x" atomic.SwapPointer(&ptr, unsafe.Pointer(&x)) } func CompareAndSwapPointer() { // BAD: x doesn't need to be heap allocated var x int // ERROR "moved to heap: x" var y int // ERROR "moved to heap: y" atomic.CompareAndSwapPointer(&ptr, unsafe.Pointer(&x), unsafe.Pointer(&y)) }
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