Initial commit: Go 1.23 release state

test/uintptrescapes2.go

@@ -0,0 +1,65 @@
+// errorcheck -0 -l -m -live
+
+// Copyright 2016 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 and liveness inferred for uintptrescapes functions.
+
+package p
+
+import (
+	"unsafe"
+)
+
+//go:uintptrescapes
+func F1(a uintptr) {} // ERROR "escaping uintptr"
+
+//go:uintptrescapes
+func F2(a ...uintptr) {} // ERROR "escaping ...uintptr"
+
+//go:uintptrescapes
+func F3(uintptr) {} // ERROR "escaping uintptr"
+
+//go:uintptrescapes
+func F4(...uintptr) {} // ERROR "escaping ...uintptr"
+
+type T struct{}
+
+//go:uintptrescapes
+func (T) M1(a uintptr) {} // ERROR "escaping uintptr"
+
+//go:uintptrescapes
+func (T) M2(a ...uintptr) {} // ERROR "escaping ...uintptr"
+
+func TestF1() {
+	var t int                        // ERROR "moved to heap"
+	F1(uintptr(unsafe.Pointer(&t)))  // ERROR "live at call to F1: .?autotmp" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
+}
+
+func TestF3() {
+	var t2 int                       // ERROR "moved to heap"
+	F3(uintptr(unsafe.Pointer(&t2))) // ERROR "live at call to F3: .?autotmp" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
+}
+
+func TestM1() {
+	var t T
+	var v int                         // ERROR "moved to heap"
+	t.M1(uintptr(unsafe.Pointer(&v))) // ERROR "live at call to T.M1: .?autotmp" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
+}
+
+func TestF2() {
+	var v int                                 // ERROR "moved to heap"
+	F2(0, 1, uintptr(unsafe.Pointer(&v)), 2)  // ERROR "live at call to newobject: .?autotmp" "live at call to F2: .?autotmp" "escapes to heap" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
+}
+
+func TestF4() {
+	var v2 int                                // ERROR "moved to heap"
+	F4(0, 1, uintptr(unsafe.Pointer(&v2)), 2) // ERROR "live at call to newobject: .?autotmp" "live at call to F4: .?autotmp" "escapes to heap" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
+}
+
+func TestM2() {
+	var t T
+	var v int                                  // ERROR "moved to heap"
+	t.M2(0, 1, uintptr(unsafe.Pointer(&v)), 2) // ERROR "live at call to newobject: .?autotmp" "live at call to T.M2: .?autotmp"  "escapes to heap" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
+}