105436638acc7c010349a69c3395f1a57c642dc62Ying Wang/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
205436638acc7c010349a69c3395f1a57c642dc62Ying Wang/* Memory allocation on the stack.
305436638acc7c010349a69c3395f1a57c642dc62Ying Wang
405436638acc7c010349a69c3395f1a57c642dc62Ying Wang   Copyright (C) 1995, 1999, 2001-2004, 2006-2012 Free Software Foundation,
505436638acc7c010349a69c3395f1a57c642dc62Ying Wang   Inc.
605436638acc7c010349a69c3395f1a57c642dc62Ying Wang
705436638acc7c010349a69c3395f1a57c642dc62Ying Wang   This program is free software; you can redistribute it and/or modify it
805436638acc7c010349a69c3395f1a57c642dc62Ying Wang   under the terms of the GNU General Public License as published
905436638acc7c010349a69c3395f1a57c642dc62Ying Wang   by the Free Software Foundation; either version 3, or (at your option)
1005436638acc7c010349a69c3395f1a57c642dc62Ying Wang   any later version.
1105436638acc7c010349a69c3395f1a57c642dc62Ying Wang
1205436638acc7c010349a69c3395f1a57c642dc62Ying Wang   This program is distributed in the hope that it will be useful,
1305436638acc7c010349a69c3395f1a57c642dc62Ying Wang   but WITHOUT ANY WARRANTY; without even the implied warranty of
1405436638acc7c010349a69c3395f1a57c642dc62Ying Wang   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
1505436638acc7c010349a69c3395f1a57c642dc62Ying Wang   General Public License for more details.
1605436638acc7c010349a69c3395f1a57c642dc62Ying Wang
1705436638acc7c010349a69c3395f1a57c642dc62Ying Wang   You should have received a copy of the GNU General Public
1805436638acc7c010349a69c3395f1a57c642dc62Ying Wang   License along with this program; if not, see
1905436638acc7c010349a69c3395f1a57c642dc62Ying Wang   <http://www.gnu.org/licenses/>.
2005436638acc7c010349a69c3395f1a57c642dc62Ying Wang  */
2105436638acc7c010349a69c3395f1a57c642dc62Ying Wang
2205436638acc7c010349a69c3395f1a57c642dc62Ying Wang/* Avoid using the symbol _ALLOCA_H here, as Bison assumes _ALLOCA_H
2305436638acc7c010349a69c3395f1a57c642dc62Ying Wang   means there is a real alloca function.  */
2405436638acc7c010349a69c3395f1a57c642dc62Ying Wang#ifndef _GL_ALLOCA_H
2505436638acc7c010349a69c3395f1a57c642dc62Ying Wang#define _GL_ALLOCA_H
2605436638acc7c010349a69c3395f1a57c642dc62Ying Wang
2705436638acc7c010349a69c3395f1a57c642dc62Ying Wang/* alloca (N) returns a pointer to N bytes of memory
2805436638acc7c010349a69c3395f1a57c642dc62Ying Wang   allocated on the stack, which will last until the function returns.
2905436638acc7c010349a69c3395f1a57c642dc62Ying Wang   Use of alloca should be avoided:
3005436638acc7c010349a69c3395f1a57c642dc62Ying Wang     - inside arguments of function calls - undefined behaviour,
3105436638acc7c010349a69c3395f1a57c642dc62Ying Wang     - in inline functions - the allocation may actually last until the
3205436638acc7c010349a69c3395f1a57c642dc62Ying Wang       calling function returns,
3305436638acc7c010349a69c3395f1a57c642dc62Ying Wang     - for huge N (say, N >= 65536) - you never know how large (or small)
3405436638acc7c010349a69c3395f1a57c642dc62Ying Wang       the stack is, and when the stack cannot fulfill the memory allocation
3505436638acc7c010349a69c3395f1a57c642dc62Ying Wang       request, the program just crashes.
3605436638acc7c010349a69c3395f1a57c642dc62Ying Wang */
3705436638acc7c010349a69c3395f1a57c642dc62Ying Wang
3805436638acc7c010349a69c3395f1a57c642dc62Ying Wang#ifndef alloca
3905436638acc7c010349a69c3395f1a57c642dc62Ying Wang# ifdef __GNUC__
4005436638acc7c010349a69c3395f1a57c642dc62Ying Wang#  define alloca __builtin_alloca
4105436638acc7c010349a69c3395f1a57c642dc62Ying Wang# elif defined _AIX
4205436638acc7c010349a69c3395f1a57c642dc62Ying Wang#  define alloca __alloca
4305436638acc7c010349a69c3395f1a57c642dc62Ying Wang# elif defined _MSC_VER
4405436638acc7c010349a69c3395f1a57c642dc62Ying Wang#  include <malloc.h>
4505436638acc7c010349a69c3395f1a57c642dc62Ying Wang#  define alloca _alloca
4605436638acc7c010349a69c3395f1a57c642dc62Ying Wang# elif defined __DECC && defined __VMS
4705436638acc7c010349a69c3395f1a57c642dc62Ying Wang#  define alloca __ALLOCA
4805436638acc7c010349a69c3395f1a57c642dc62Ying Wang# elif defined __TANDEM && defined _TNS_E_TARGET
4905436638acc7c010349a69c3395f1a57c642dc62Ying Wang#  ifdef  __cplusplus
5005436638acc7c010349a69c3395f1a57c642dc62Ying Wangextern "C"
5105436638acc7c010349a69c3395f1a57c642dc62Ying Wang#  endif
5205436638acc7c010349a69c3395f1a57c642dc62Ying Wangvoid *_alloca (unsigned short);
5305436638acc7c010349a69c3395f1a57c642dc62Ying Wang#  pragma intrinsic (_alloca)
5405436638acc7c010349a69c3395f1a57c642dc62Ying Wang#  define alloca _alloca
5505436638acc7c010349a69c3395f1a57c642dc62Ying Wang# else
5605436638acc7c010349a69c3395f1a57c642dc62Ying Wang#  include <stddef.h>
5705436638acc7c010349a69c3395f1a57c642dc62Ying Wang#  ifdef  __cplusplus
5805436638acc7c010349a69c3395f1a57c642dc62Ying Wangextern "C"
5905436638acc7c010349a69c3395f1a57c642dc62Ying Wang#  endif
6005436638acc7c010349a69c3395f1a57c642dc62Ying Wangvoid *alloca (size_t);
6105436638acc7c010349a69c3395f1a57c642dc62Ying Wang# endif
6205436638acc7c010349a69c3395f1a57c642dc62Ying Wang#endif
6305436638acc7c010349a69c3395f1a57c642dc62Ying Wang
6405436638acc7c010349a69c3395f1a57c642dc62Ying Wang#endif /* _GL_ALLOCA_H */
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