156a835a5SJohn Marino /* DO NOT EDIT! GENERATED AUTOMATICALLY! */ 256a835a5SJohn Marino /* Memory allocation on the stack. 356a835a5SJohn Marino 4*4ce1b016SDaniel Fojt Copyright (C) 1995, 1999, 2001-2004, 2006-2020 Free Software Foundation, 556a835a5SJohn Marino Inc. 656a835a5SJohn Marino 756a835a5SJohn Marino This program is free software; you can redistribute it and/or modify it 856a835a5SJohn Marino under the terms of the GNU General Public License as published 956a835a5SJohn Marino by the Free Software Foundation; either version 3, or (at your option) 1056a835a5SJohn Marino any later version. 1156a835a5SJohn Marino 1256a835a5SJohn Marino This program is distributed in the hope that it will be useful, 1356a835a5SJohn Marino but WITHOUT ANY WARRANTY; without even the implied warranty of 1456a835a5SJohn Marino MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 1556a835a5SJohn Marino General Public License for more details. 1656a835a5SJohn Marino 1756a835a5SJohn Marino You should have received a copy of the GNU General Public 18073c18e4SJohn Marino License along with this program; if not, see 19*4ce1b016SDaniel Fojt <https://www.gnu.org/licenses/>. 20073c18e4SJohn Marino */ 2156a835a5SJohn Marino 2256a835a5SJohn Marino /* Avoid using the symbol _ALLOCA_H here, as Bison assumes _ALLOCA_H 2356a835a5SJohn Marino means there is a real alloca function. */ 2456a835a5SJohn Marino #ifndef _GL_ALLOCA_H 2556a835a5SJohn Marino #define _GL_ALLOCA_H 2656a835a5SJohn Marino 2756a835a5SJohn Marino /* alloca (N) returns a pointer to N bytes of memory 2856a835a5SJohn Marino allocated on the stack, which will last until the function returns. 2956a835a5SJohn Marino Use of alloca should be avoided: 3056a835a5SJohn Marino - inside arguments of function calls - undefined behaviour, 3156a835a5SJohn Marino - in inline functions - the allocation may actually last until the 3256a835a5SJohn Marino calling function returns, 3356a835a5SJohn Marino - for huge N (say, N >= 65536) - you never know how large (or small) 3456a835a5SJohn Marino the stack is, and when the stack cannot fulfill the memory allocation 3556a835a5SJohn Marino request, the program just crashes. 3656a835a5SJohn Marino */ 3756a835a5SJohn Marino 3856a835a5SJohn Marino #ifndef alloca 3956a835a5SJohn Marino # ifdef __GNUC__ 40*4ce1b016SDaniel Fojt /* Some version of mingw have an <alloca.h> that causes trouble when 41*4ce1b016SDaniel Fojt included after 'alloca' gets defined as a macro. As a workaround, include 42*4ce1b016SDaniel Fojt this <alloca.h> first and define 'alloca' as a macro afterwards. */ 43*4ce1b016SDaniel Fojt # if (defined _WIN32 && ! defined __CYGWIN__) && 1 44*4ce1b016SDaniel Fojt # include_next <alloca.h> 45*4ce1b016SDaniel Fojt # endif 4656a835a5SJohn Marino # define alloca __builtin_alloca 4756a835a5SJohn Marino # elif defined _AIX 4856a835a5SJohn Marino # define alloca __alloca 4956a835a5SJohn Marino # elif defined _MSC_VER 5056a835a5SJohn Marino # include <malloc.h> 5156a835a5SJohn Marino # define alloca _alloca 5256a835a5SJohn Marino # elif defined __DECC && defined __VMS 5356a835a5SJohn Marino # define alloca __ALLOCA 546aaf5a41SJohn Marino # elif defined __TANDEM && defined _TNS_E_TARGET 556aaf5a41SJohn Marino # ifdef __cplusplus 566aaf5a41SJohn Marino extern "C" 576aaf5a41SJohn Marino # endif 586aaf5a41SJohn Marino void *_alloca (unsigned short); 596aaf5a41SJohn Marino # pragma intrinsic (_alloca) 606aaf5a41SJohn Marino # define alloca _alloca 61*4ce1b016SDaniel Fojt # elif defined __MVS__ 62*4ce1b016SDaniel Fojt # include <stdlib.h> 6356a835a5SJohn Marino # else 6456a835a5SJohn Marino # include <stddef.h> 6556a835a5SJohn Marino # ifdef __cplusplus 6656a835a5SJohn Marino extern "C" 6756a835a5SJohn Marino # endif 6856a835a5SJohn Marino void *alloca (size_t); 6956a835a5SJohn Marino # endif 7056a835a5SJohn Marino #endif 7156a835a5SJohn Marino 7256a835a5SJohn Marino #endif /* _GL_ALLOCA_H */ 73