Initial commit: Go 1.23 release state

test/uintptrescapes.dir/a.go

@@ -0,0 +1,54 @@
+// 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.
+
+package a
+
+import (
+	"unsafe"
+)
+
+func recurse(i int, s []byte) byte {
+	s[0] = byte(i)
+	if i == 0 {
+		return s[i]
+	} else {
+		var a [1024]byte
+		r := recurse(i-1, a[:])
+		return r + a[0]
+	}
+}
+
+//go:uintptrescapes
+func F1(a uintptr) {
+	var s [16]byte
+	recurse(4096, s[:])
+	*(*int)(unsafe.Pointer(a)) = 42
+}
+
+//go:uintptrescapes
+func F2(a ...uintptr) {
+	var s [16]byte
+	recurse(4096, s[:])
+	*(*int)(unsafe.Pointer(a[0])) = 42
+}
+
+type t struct{}
+
+func GetT() *t {
+	return &t{}
+}
+
+//go:uintptrescapes
+func (*t) M1(a uintptr) {
+	var s [16]byte
+	recurse(4096, s[:])
+	*(*int)(unsafe.Pointer(a)) = 42
+}
+
+//go:uintptrescapes
+func (*t) M2(a ...uintptr) {
+	var s [16]byte
+	recurse(4096, s[:])
+	*(*int)(unsafe.Pointer(a[0])) = 42
+}

test/uintptrescapes.dir/main.go

@@ -0,0 +1,91 @@
+// 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.
+
+package main
+
+import (
+	"fmt"
+	"os"
+	"sync"
+	"unsafe"
+
+	"./a"
+)
+
+func F1() int {
+	var buf [1024]int
+	a.F1(uintptr(unsafe.Pointer(&buf[0])))
+	return buf[0]
+}
+
+func F2() int {
+	var buf [1024]int
+	a.F2(uintptr(unsafe.Pointer(&buf[0])))
+	return buf[0]
+}
+
+var t = a.GetT()
+
+func M1() int {
+	var buf [1024]int
+	t.M1(uintptr(unsafe.Pointer(&buf[0])))
+	return buf[0]
+}
+
+func M2() int {
+	var buf [1024]int
+	t.M2(uintptr(unsafe.Pointer(&buf[0])))
+	return buf[0]
+}
+
+func main() {
+	// Use different goroutines to force stack growth.
+	var wg sync.WaitGroup
+	wg.Add(4)
+	c := make(chan bool, 4)
+
+	go func() {
+		defer wg.Done()
+		b := F1()
+		if b != 42 {
+			fmt.Printf("F1: got %d, expected 42\n", b)
+			c <- false
+		}
+	}()
+
+	go func() {
+		defer wg.Done()
+		b := F2()
+		if b != 42 {
+			fmt.Printf("F2: got %d, expected 42\n", b)
+			c <- false
+		}
+	}()
+
+	go func() {
+		defer wg.Done()
+		b := M1()
+		if b != 42 {
+			fmt.Printf("M1: got %d, expected 42\n", b)
+			c <- false
+		}
+	}()
+
+	go func() {
+		defer wg.Done()
+		b := M2()
+		if b != 42 {
+			fmt.Printf("M2: got %d, expected 42\n", b)
+			c <- false
+		}
+	}()
+
+	wg.Wait()
+
+	select {
+	case <-c:
+		os.Exit(1)
+	default:
+	}
+}