1 /* Copyright (C) 1992, 1996, 1997, 1998, 1999 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, write to the Free 16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 17 02111-1307 USA. */ 18 19 #ifndef _ALLOCA_H 20 #define _ALLOCA_H 1 21 22 #include <features.h> 23 24 #define __need_size_t 25 #include <stddef.h> 26 27 __BEGIN_DECLS 28 29 /* Remove any previous definitions. */ 30 #undef alloca 31 32 /* Allocate a block that will be freed when the calling function exits. */ 33 extern void *alloca (size_t __size) __THROW; 34 35 #ifdef __GNUC__ 36 # define alloca(size) __builtin_alloca (size) 37 #endif /* GCC. */ 38 39 __END_DECLS 40 41 #endif /* alloca.h */ 42