/usr/share/go-1.8/test/uintptrescapes.dir/a.go is in golang-1.8-src 1.8.3-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 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
}
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