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Diffstat (limited to '')
-rw-r--r-- | test/fixedbugs/bug273.go | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/test/fixedbugs/bug273.go b/test/fixedbugs/bug273.go new file mode 100644 index 0000000..2af8800 --- /dev/null +++ b/test/fixedbugs/bug273.go @@ -0,0 +1,79 @@ +// run + +// 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. + +// https://golang.org/issue/589 + +package main + +import "unsafe" + +var bug = false + +var minus1 = -1 +var five = 5 +var big int64 = 10 | 1<<46 + +type block [1 << 19]byte + +var g1 []block + +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([]block, minus1) +} + +func biglen() { + g1 = make([]block, big) +} + +func badcap() { + g1 = make([]block, 10, minus1) +} + +func badcap1() { + g1 = make([]block, 10, five) +} + +func bigcap() { + g1 = make([]block, 10, big) +} + +type cblock [1<<16 - 1]byte + +var g4 chan cblock + +func badchancap() { + g4 = make(chan cblock, minus1) +} + +func bigchancap() { + g4 = make(chan cblock, big) +} + +func overflowchan() { + const ptrSize = unsafe.Sizeof(uintptr(0)) + g4 = make(chan cblock, 1<<(30*(ptrSize/4))) +} + +func main() { + shouldfail(badlen, "badlen") + shouldfail(biglen, "biglen") + shouldfail(badcap, "badcap") + shouldfail(badcap1, "badcap1") + shouldfail(bigcap, "bigcap") + shouldfail(badchancap, "badchancap") + shouldfail(bigchancap, "bigchancap") + shouldfail(overflowchan, "overflowchan") +} |