mirror of
https://github.com/golang/go
synced 2024-11-18 15:24:41 -07:00
feb95a802e
The current spec says that when calling make, if both len and cap are constant, it is an error if len > cap. The gc compiler does not yet implement that, but when it does this will need to change. Changing it now for the benefit of gccgo. R=gri CC=golang-dev https://golang.org/cl/6867064
87 lines
1.4 KiB
Go
87 lines
1.4 KiB
Go
// run
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// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// http://code.google.com/p/go/issues/detail?id=589
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package main
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var bug = false
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var minus1 = -1
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var five = 5
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var big int64 = 10 | 1<<32
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type block [1<<19]byte
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var g1 []block
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func shouldfail(f func(), desc string) {
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defer func() { recover() }()
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f()
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if !bug {
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println("BUG")
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bug = true
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}
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println("didn't crash: ", desc)
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}
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func badlen() {
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g1 = make([]block, minus1)
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}
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func biglen() {
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g1 = make([]block, big)
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}
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func badcap() {
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g1 = make([]block, 10, minus1)
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}
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func badcap1() {
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g1 = make([]block, 10, five)
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}
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func bigcap() {
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g1 = make([]block, 10, big)
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}
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var g3 map[block]block
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func badmapcap() {
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g3 = make(map[block]block, minus1)
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}
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func bigmapcap() {
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g3 = make(map[block]block, big)
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}
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type cblock [1<<16-1]byte
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var g4 chan cblock
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func badchancap() {
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g4 = make(chan cblock, minus1)
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}
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func bigchancap() {
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g4 = make(chan cblock, big)
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}
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func overflowchan() {
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g4 = make(chan cblock, 1<<30)
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}
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func main() {
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shouldfail(badlen, "badlen")
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shouldfail(biglen, "biglen")
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shouldfail(badcap, "badcap")
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shouldfail(badcap1, "badcap1")
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shouldfail(bigcap, "bigcap")
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shouldfail(badmapcap, "badmapcap")
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shouldfail(bigmapcap, "bigmapcap")
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shouldfail(badchancap, "badchancap")
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shouldfail(bigchancap, "bigchancap")
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shouldfail(overflowchan, "overflowchan")
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}
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