1 /* DO NOT EDIT! GENERATED AUTOMATICALLY! */
2 /* Memory allocation on the stack.
3 
4    Copyright (C) 1995, 1999, 2001-2004, 2006-2020 Free Software Foundation,
5    Inc.
6 
7    This program is free software; you can redistribute it and/or modify it
8    under the terms of the GNU General Public License as published
9    by the Free Software Foundation; either version 3, or (at your option)
10    any later version.
11 
12    This program is distributed in the hope that it will be useful,
13    but WITHOUT ANY WARRANTY; without even the implied warranty of
14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15    General Public License for more details.
16 
17    You should have received a copy of the GNU General Public
18    License along with this program; if not, see
19    <https://www.gnu.org/licenses/>.
20   */
21 
22 /* Avoid using the symbol _ALLOCA_H here, as Bison assumes _ALLOCA_H
23    means there is a real alloca function.  */
24 #ifndef _GL_ALLOCA_H
25 #define _GL_ALLOCA_H
26 
27 /* alloca (N) returns a pointer to N bytes of memory
28    allocated on the stack, which will last until the function returns.
29    Use of alloca should be avoided:
30      - inside arguments of function calls - undefined behaviour,
31      - in inline functions - the allocation may actually last until the
32        calling function returns,
33      - for huge N (say, N >= 65536) - you never know how large (or small)
34        the stack is, and when the stack cannot fulfill the memory allocation
35        request, the program just crashes.
36  */
37 
38 #ifndef alloca
39 # ifdef __GNUC__
40    /* Some version of mingw have an <alloca.h> that causes trouble when
41       included after 'alloca' gets defined as a macro.  As a workaround, include
42       this <alloca.h> first and define 'alloca' as a macro afterwards.  */
43 #  if (defined _WIN32 && ! defined __CYGWIN__) && 1
44 #   include_next <alloca.h>
45 #  endif
46 #  define alloca __builtin_alloca
47 # elif defined _AIX
48 #  define alloca __alloca
49 # elif defined _MSC_VER
50 #  include <malloc.h>
51 #  define alloca _alloca
52 # elif defined __DECC && defined __VMS
53 #  define alloca __ALLOCA
54 # elif defined __TANDEM && defined _TNS_E_TARGET
55 #  ifdef  __cplusplus
56 extern "C"
57 #  endif
58 void *_alloca (unsigned short);
59 #  pragma intrinsic (_alloca)
60 #  define alloca _alloca
61 # elif defined __MVS__
62 #  include <stdlib.h>
63 # else
64 #  include <stddef.h>
65 #  ifdef  __cplusplus
66 extern "C"
67 #  endif
68 void *alloca (size_t);
69 # endif
70 #endif
71 
72 #endif /* _GL_ALLOCA_H */
73