glibc/stdlib/alloca.h

45 lines
1.3 KiB
C

/* Copyright (C) 1992, 1996 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#ifndef _ALLOCA_H
#define _ALLOCA_H 1
#include <features.h>
#define __need_size_t
#include <stddef.h>
__BEGIN_DECLS
/* Remove any previous definitions. */
#undef __alloca
#undef alloca
/* Allocate a block that will be freed when the calling function exits. */
extern __ptr_t __alloca __P ((size_t __size));
extern __ptr_t alloca __P ((size_t __size));
#ifdef __GNUC__
#define __alloca(size) __builtin_alloca(size)
#endif /* GCC. */
#define alloca(size) __alloca(size)
__END_DECLS
#endif /* alloca.h */