Mercurial > hg-old > index.cgi
comparison lib/alloca.in.h @ 265:68fbca173508 2.6
Added generated files for release
| author | lost |
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| date | Tue, 22 Dec 2009 05:31:23 +0000 |
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| 264:61d1db1dfe2a | 265:68fbca173508 |
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| 1 /* Memory allocation on the stack. | |
| 2 | |
| 3 Copyright (C) 1995, 1999, 2001-2004, 2006-2008 Free Software | |
| 4 Foundation, 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 2, 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 */ |