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test/escape_runtime_atomic.go
33 строки
874 B
Andy Pan
runtime: migrate internal/atomic to internal/runtime
25 мар 2024, 22:53
25 мар 2024, 22:53
4c2b1e0
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// 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)) }