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| author | Ondřej Surý <ondrej@sury.org> | 2011-09-13 13:11:55 +0200 |
|---|---|---|
| committer | Ondřej Surý <ondrej@sury.org> | 2011-09-13 13:11:55 +0200 |
| commit | 80f18fc933cf3f3e829c5455a1023d69f7b86e52 (patch) | |
| tree | 4b825dc642cb6eb9a060e54bf8d69288fbee4904 /test/nilptr/arraytoslice2.go | |
| parent | 28592ee1ea1f5cdffcf85472f9de0285d928cf12 (diff) | |
| download | golang-80f18fc933cf3f3e829c5455a1023d69f7b86e52.tar.gz | |
Imported Upstream version 60
Diffstat (limited to 'test/nilptr/arraytoslice2.go')
| -rw-r--r-- | test/nilptr/arraytoslice2.go | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/test/nilptr/arraytoslice2.go b/test/nilptr/arraytoslice2.go deleted file mode 100644 index 68ea44083..000000000 --- a/test/nilptr/arraytoslice2.go +++ /dev/null @@ -1,34 +0,0 @@ -// $G $D/$F.go && $L $F.$A && -// ((! sh -c ./$A.out) >/dev/null 2>&1 || echo BUG: should fail) - -// Copyright 2009 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 dummy [512<<20]byte // give us a big address space -var q *[1<<30]byte -func main() { - // the test only tests what we intend to test - // if dummy starts in the first 256 MB of memory. - // otherwise there might not be anything mapped - // at the address that might be accidentally - // dereferenced below. - if uintptr(unsafe.Pointer(&dummy)) > 256<<20 { - panic("dummy too far out") - } - - // The problem here is that indexing into p[] with a large - // enough index can jump out of the unmapped section - // at the beginning of memory and into valid memory. - // - // To avoid needing a check on every slice beyond the - // usual len and cap, we require the *array -> slice - // conversion to do the check. - var x []byte - var y = &x - *y = q[0:] // should crash (uses arraytoslice runtime routine) -} |
