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// $G $D/$F.go && $L $F.$A && ./$A.out
// Copyright 2010 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.
// http://code.google.com/p/go/issues/detail?id=589
package main
import "unsafe"
var bug = false
var minus1 = -1
var big int64 = 10 | 1<<32
var g1 []int
func shouldfail(f func(), desc string) {
defer func() { recover() }()
f()
if !bug {
println("BUG")
bug = true
}
println("didn't crash: ", desc)
}
func badlen() {
g1 = make([]int, minus1)
}
func biglen() {
g1 = make([]int, big)
}
func badcap() {
g1 = make([]int, 10, minus1)
}
func badcap1() {
g1 = make([]int, 10, 5)
}
func bigcap() {
g1 = make([]int, 10, big)
}
const (
addrBits = 8*uint(unsafe.Sizeof((*byte)(nil)))
sh = addrBits/2 - 2
)
var g2 [][1<<sh][1<<sh]byte
func overflow() {
g2 = make([][1<<sh][1<<sh]byte, 64)
}
var g3 map[int]int
func badmapcap() {
g3 = make(map[int]int, minus1)
}
func bigmapcap() {
g3 = make(map[int]int, big)
}
var g4 chan int
func badchancap() {
g4 = make(chan int, minus1)
}
func bigchancap() {
g4 = make(chan int, big)
}
var g5 chan [1<<15]byte
func overflowchan() {
if addrBits == 32 {
g5 = make(chan [1<<15]byte, 1<<20)
} else {
// cannot overflow on 64-bit, because
// int is 32 bits and max chan value size
// in the implementation is 64 kB.
panic(1)
}
}
func main() {
shouldfail(badlen, "badlen")
shouldfail(biglen, "biglen")
shouldfail(badcap, "badcap")
shouldfail(badcap1, "badcap1")
shouldfail(bigcap, "bigcap")
shouldfail(overflow, "overflow")
shouldfail(badmapcap, "badmapcap")
shouldfail(bigmapcap, "bigmapcap")
shouldfail(badchancap, "badchancap")
shouldfail(bigchancap, "bigchancap")
shouldfail(overflowchan, "overflowchan")
}
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