Mercurial > hg > octave-kai > gnulib-hg
annotate lib/xalloc-oversized.h @ 17463:203c036eb0c6
bootstrap: support checksum utils without a --status option
* build-aux/bootstrap: Only look for sha1sum if updating po files.
Add sha1 to the list of supported checksum utils since it's now
supported through adjustments below.
(update_po_files): Remove the use of --status
in a way that will suppress all error messages, but since this is
only used to minimize updates, it shouldn't cause an issue.
Exit early if there is a problem updating the po file checksums.
(find_tool): Remove the check for --version support as this
is optional as per commit 86186b17. Don't even check for the
presence of the command as if that is needed, it's supported
through configuring prerequisites in bootstrap.conf.
Prompt that when a tool isn't found, one can define an environment
variable to add to the hardcoded search list.
| author | Pádraig Brady <P@draigBrady.com> |
|---|---|
| date | Thu, 08 Aug 2013 11:08:49 +0100 |
| parents | e542fd46ad6f |
| children |
| rev | line source |
|---|---|
| 14643 | 1 /* xalloc-oversized.h -- memory allocation size checking |
| 2 | |
|
17249
e542fd46ad6f
maint: update all copyright year number ranges
Eric Blake <eblake@redhat.com>
parents:
17094
diff
changeset
|
3 Copyright (C) 1990-2000, 2003-2004, 2006-2013 Free Software Foundation, Inc. |
| 14643 | 4 |
| 5 This program is free software: you can redistribute it and/or modify | |
| 6 it under the terms of the GNU General Public License as published by | |
| 7 the Free Software Foundation; either version 3 of the License, or | |
| 8 (at your option) any later version. | |
| 9 | |
| 10 This program is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 GNU General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU General Public License | |
| 16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
| 17 | |
| 18 #ifndef XALLOC_OVERSIZED_H_ | |
| 19 # define XALLOC_OVERSIZED_H_ | |
| 20 | |
| 21 # include <stddef.h> | |
| 22 | |
| 23 /* Return 1 if an array of N objects, each of size S, cannot exist due | |
| 24 to size arithmetic overflow. S must be positive and N must be | |
|
17094
67cb7096523b
misc: don't limit commentary to inline functions
Paul Eggert <eggert@cs.ucla.edu>
parents:
16201
diff
changeset
|
25 nonnegative. This is a macro, not a function, so that it |
| 14643 | 26 works correctly even when SIZE_MAX < N. |
| 27 | |
| 28 By gnulib convention, SIZE_MAX represents overflow in size | |
| 29 calculations, so the conservative dividend to use here is | |
| 30 SIZE_MAX - 1, since SIZE_MAX might represent an overflowed value. | |
| 31 However, malloc (SIZE_MAX) fails on all known hosts where | |
| 32 sizeof (ptrdiff_t) <= sizeof (size_t), so do not bother to test for | |
| 33 exactly-SIZE_MAX allocations on such hosts; this avoids a test and | |
| 34 branch when S is known to be 1. */ | |
| 35 # define xalloc_oversized(n, s) \ | |
| 36 ((size_t) (sizeof (ptrdiff_t) <= sizeof (size_t) ? -1 : -2) / (s) < (n)) | |
| 37 | |
| 38 #endif /* !XALLOC_OVERSIZED_H_ */ |