mirror of
https://github.com/golang/go
synced 2024-11-23 19:40:08 -07:00
50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
// run
|
|
|
|
// Copyright 2013 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 (
|
|
"strings"
|
|
"unsafe"
|
|
)
|
|
|
|
type T []int
|
|
|
|
func main() {
|
|
n := -1
|
|
shouldPanic("len out of range", func() {_ = make(T, n)})
|
|
shouldPanic("cap out of range", func() {_ = make(T, 0, n)})
|
|
var t *byte
|
|
if unsafe.Sizeof(t) == 8 {
|
|
n = 1<<20
|
|
n <<= 20
|
|
shouldPanic("len out of range", func() {_ = make(T, n)})
|
|
shouldPanic("cap out of range", func() {_ = make(T, 0, n)})
|
|
n <<= 20
|
|
shouldPanic("len out of range", func() {_ = make(T, n)})
|
|
shouldPanic("cap out of range", func() {_ = make(T, 0, n)})
|
|
} else {
|
|
n = 1<<31 - 1
|
|
shouldPanic("len out of range", func() {_ = make(T, n)})
|
|
shouldPanic("cap out of range", func() {_ = make(T, 0, n)})
|
|
}
|
|
}
|
|
|
|
func shouldPanic(str string, f func()) {
|
|
defer func() {
|
|
err := recover()
|
|
if err == nil {
|
|
panic("did not panic")
|
|
}
|
|
s := err.(error).Error()
|
|
if !strings.Contains(s, str) {
|
|
panic("got panic " + s + ", want " + str)
|
|
}
|
|
}()
|
|
|
|
f()
|
|
}
|