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comparison lib/alloca.in.h @ 434:b8bf63962a99 3.0

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Added various generated files for release
author lost@l-w.ca
date Fri, 29 Oct 2010 19:20:39 -0600
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433:b142b473f0ee 434:b8bf63962a99
1 /* Memory allocation on the stack.
2
3 Copyright (C) 1995, 1999, 2001-2004, 2006-2010 Free Software Foundation,
4 Inc.
5
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published
8 by the Free Software Foundation; either version 3, or (at your option)
9 any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
15
16 You should have received a copy of the GNU General Public
17 License along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
19 USA. */
20
21 /* Avoid using the symbol _ALLOCA_H here, as Bison assumes _ALLOCA_H
22 means there is a real alloca function. */
23 #ifndef _GL_ALLOCA_H
24 #define _GL_ALLOCA_H
25
26 /* alloca (N) returns a pointer to N bytes of memory
27 allocated on the stack, which will last until the function returns.
28 Use of alloca should be avoided:
29 - inside arguments of function calls - undefined behaviour,
30 - in inline functions - the allocation may actually last until the
31 calling function returns,
32 - for huge N (say, N >= 65536) - you never know how large (or small)
33 the stack is, and when the stack cannot fulfill the memory allocation
34 request, the program just crashes.
35 */
36
37 #ifndef alloca
38 # ifdef __GNUC__
39 # define alloca __builtin_alloca
40 # elif defined _AIX
41 # define alloca __alloca
42 # elif defined _MSC_VER
43 # include <malloc.h>
44 # define alloca _alloca
45 # elif defined __DECC && defined __VMS
46 # define alloca __ALLOCA
47 # else
48 # include <stddef.h>
49 # ifdef __cplusplus
50 extern "C"
51 # endif
52 void *alloca (size_t);
53 # endif
54 #endif
55
56 #endif /* _GL_ALLOCA_H */