diff options
Diffstat (limited to 'test/escape_sync_atomic.go')
-rw-r--r-- | test/escape_sync_atomic.go | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/test/escape_sync_atomic.go b/test/escape_sync_atomic.go new file mode 100644 index 0000000..e509b37 --- /dev/null +++ b/test/escape_sync_atomic.go @@ -0,0 +1,38 @@ +// 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)) +} |