1 /* DO NOT EDIT! GENERATED AUTOMATICALLY! */ 2 /* -*- buffer-read-only: t -*- vi: set ro: */ 3 /* DO NOT EDIT! GENERATED AUTOMATICALLY! */ 4 /* Memory allocation on the stack. 5 6 Copyright (C) 1995, 1999, 2001-2004, 2006-2011 Free Software Foundation, 7 Inc. 8 9 This program is free software; you can redistribute it and/or modify it 10 under the terms of the GNU General Public License as published 11 by the Free Software Foundation; either version 3, or (at your option) 12 any later version. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 General Public License for more details. 18 19 You should have received a copy of the GNU General Public 20 License along with this program; if not, write to the Free Software 21 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 22 USA. */ 23 24 /* Avoid using the symbol _ALLOCA_H here, as Bison assumes _ALLOCA_H 25 means there is a real alloca function. */ 26 #ifndef _GL_ALLOCA_H 27 #define _GL_ALLOCA_H 28 29 /* alloca (N) returns a pointer to N bytes of memory 30 allocated on the stack, which will last until the function returns. 31 Use of alloca should be avoided: 32 - inside arguments of function calls - undefined behaviour, 33 - in inline functions - the allocation may actually last until the 34 calling function returns, 35 - for huge N (say, N >= 65536) - you never know how large (or small) 36 the stack is, and when the stack cannot fulfill the memory allocation 37 request, the program just crashes. 38 */ 39 40 #ifndef alloca 41 # ifdef __GNUC__ 42 # define alloca __builtin_alloca 43 # elif defined _AIX 44 # define alloca __alloca 45 # elif defined _MSC_VER 46 # include <malloc.h> 47 # define alloca _alloca 48 # elif defined __DECC && defined __VMS 49 # define alloca __ALLOCA 50 # else 51 # include <stddef.h> 52 # ifdef __cplusplus 53 extern "C" 54 # endif 55 void *alloca (size_t); 56 # endif 57 #endif 58 59 #endif /* _GL_ALLOCA_H */ 60