mirror of
https://github.com/golang/go
synced 2024-11-13 16:40:22 -07:00
53fd522c0d
Follows suit with https://go-review.googlesource.com/#/c/20111. Generated by running $ grep -R 'Go Authors. All' * | cut -d":" -f1 | while read F;do perl -pi -e 's/Go Authors. All/Go Authors. All/g' $F;done The code in cmd/internal/unvendor wasn't changed. Fixes #15213 Change-Id: I4f235cee0a62ec435f9e8540a1ec08ae03b1a75f Reviewed-on: https://go-review.googlesource.com/21819 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
91 lines
1.9 KiB
Go
91 lines
1.9 KiB
Go
// run
|
|
|
|
// Copyright 2014 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 "unsafe"
|
|
|
|
var (
|
|
hello = "hello"
|
|
bytes = []byte{1, 2, 3, 4, 5}
|
|
ints = []int32{1, 2, 3, 4, 5}
|
|
|
|
five = 5
|
|
|
|
ok = true
|
|
)
|
|
|
|
func notOK() {
|
|
if ok {
|
|
println("BUG:")
|
|
ok = false
|
|
}
|
|
}
|
|
|
|
func checkString(desc, s string) {
|
|
p1 := *(*uintptr)(unsafe.Pointer(&s))
|
|
p2 := *(*uintptr)(unsafe.Pointer(&hello))
|
|
if p1-p2 >= 5 {
|
|
notOK()
|
|
println("string", desc, "has invalid base")
|
|
}
|
|
}
|
|
|
|
func checkBytes(desc string, s []byte) {
|
|
p1 := *(*uintptr)(unsafe.Pointer(&s))
|
|
p2 := *(*uintptr)(unsafe.Pointer(&bytes))
|
|
if p1-p2 >= 5 {
|
|
println("byte slice", desc, "has invalid base")
|
|
}
|
|
}
|
|
|
|
func checkInts(desc string, s []int32) {
|
|
p1 := *(*uintptr)(unsafe.Pointer(&s))
|
|
p2 := *(*uintptr)(unsafe.Pointer(&ints))
|
|
if p1-p2 >= 5*4 {
|
|
println("int slice", desc, "has invalid base")
|
|
}
|
|
}
|
|
|
|
func main() {
|
|
{
|
|
x := hello
|
|
checkString("x", x)
|
|
checkString("x[5:]", x[5:])
|
|
checkString("x[five:]", x[five:])
|
|
checkString("x[5:five]", x[5:five])
|
|
checkString("x[five:5]", x[five:5])
|
|
checkString("x[five:five]", x[five:five])
|
|
checkString("x[1:][2:][2:]", x[1:][2:][2:])
|
|
y := x[4:]
|
|
checkString("y[1:]", y[1:])
|
|
}
|
|
{
|
|
x := bytes
|
|
checkBytes("x", x)
|
|
checkBytes("x[5:]", x[5:])
|
|
checkBytes("x[five:]", x[five:])
|
|
checkBytes("x[5:five]", x[5:five])
|
|
checkBytes("x[five:5]", x[five:5])
|
|
checkBytes("x[five:five]", x[five:five])
|
|
checkBytes("x[1:][2:][2:]", x[1:][2:][2:])
|
|
y := x[4:]
|
|
checkBytes("y[1:]", y[1:])
|
|
}
|
|
{
|
|
x := ints
|
|
checkInts("x", x)
|
|
checkInts("x[5:]", x[5:])
|
|
checkInts("x[five:]", x[five:])
|
|
checkInts("x[5:five]", x[5:five])
|
|
checkInts("x[five:5]", x[five:5])
|
|
checkInts("x[five:five]", x[five:five])
|
|
checkInts("x[1:][2:][2:]", x[1:][2:][2:])
|
|
y := x[4:]
|
|
checkInts("y[1:]", y[1:])
|
|
}
|
|
}
|