1
0
mirror of https://github.com/golang/go synced 2024-11-12 12:40:28 -07:00
go/test/uintptrescapes.dir/a.go

55 lines
879 B
Go
Raw Normal View History

// 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
}