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/* Copyright (C) 1991-2019 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifndef _MALLOC_INTERNAL
# define _MALLOC_INTERNAL
# include <malloc.h>
#endif
#ifndef __GNU_LIBRARY__
# define __sbrk sbrk
#endif
#ifdef __GNU_LIBRARY__
/* It is best not to declare this and cast its result on foreign operating
systems with potentially hostile include files. */
# include <stddef.h>
# include <stdlib.h>
extern void *__sbrk (ptrdiff_t increment) __THROW;
libc_hidden_proto (__sbrk)
#endif
#ifndef NULL
# define NULL 0
#endif
/* Allocate INCREMENT more bytes of data space,
and return the start of data space, or NULL on errors.
If INCREMENT is negative, shrink data space. */
void *
__default_morecore (ptrdiff_t increment)
{
void *result = (void *) __sbrk (increment);
if (result == (void *) -1)
return NULL;
return result;
}
libc_hidden_def (__default_morecore)
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