1 /* Safe automatic memory allocation with out of memory checking.
2 Copyright (C) 2003 Free Software Foundation, Inc.
3 Written by Bruno Haible <bruno@clisp.org>, 2003.
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 2, or (at your option)
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.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software Foundation,
17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
24 /* xallocsa(N) is a checking safe variant of alloca(N). It allocates N bytes
25 of memory allocated on the stack, that must be freed using freesa() before
26 the function returns. Upon failure, it exits with an error message. */
28 # define xallocsa(N) \
29 ((N) < 4032 - sa_increment \
30 ? (void *) ((char *) alloca ((N) + sa_increment) + sa_increment) \
32 extern void * xmallocsa (size_t n);
34 # define xallocsa(N) \
38 /* Maybe we should also define a variant
39 xnallocsa (size_t n, size_t s) - behaves like xallocsa (n * s)
40 If this would be useful in your application. please speak up. */
42 #endif /* _XALLOCSA_H */