Initial commit: Go 1.23 release state

test/escape_runtime_atomic.go

@@ -0,0 +1,33 @@
+// 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))
+}