1/* Copyright (C) 1992-2020 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, see 
16 <https://www.gnu.org/licenses/>. */ 
17 
18#ifndef _ALLOCA_H 
19#define _ALLOCA_H 1 
20 
21#include <features.h> 
22 
23#define __need_size_t 
24#include <stddef.h> 
25 
26__BEGIN_DECLS 
27 
28/* Remove any previous definitions. */ 
29#undef alloca 
30 
31/* Allocate a block that will be freed when the calling function exits. */ 
32extern void *alloca (size_t __size) __THROW; 
33 
34#ifdef __GNUC__ 
35# define alloca(size) __builtin_alloca (size) 
36#endif /* GCC. */ 
37 
38__END_DECLS 
39 
40#endif /* alloca.h */ 
41