52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
/* Copyright (C) 1991, 92, 93, 94, 95, 97 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _MALLOC_INTERNAL
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#define _MALLOC_INTERNAL
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#include <malloc.h>
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#endif
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#ifndef __GNU_LIBRARY__
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#define __sbrk sbrk
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#endif
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#ifdef __GNU_LIBRARY__
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/* It is best not to declare this and cast its result on foreign operating
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systems with potentially hostile include files. */
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#include <stddef.h>
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extern __malloc_ptr_t __sbrk __P ((ptrdiff_t increment));
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#endif
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#ifndef NULL
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#define NULL 0
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#endif
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/* Allocate INCREMENT more bytes of data space,
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and return the start of data space, or NULL on errors.
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If INCREMENT is negative, shrink data space. */
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__malloc_ptr_t
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__default_morecore (increment)
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__malloc_ptrdiff_t increment;
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{
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__malloc_ptr_t result = (__malloc_ptr_t) __sbrk (increment);
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if (result == (__malloc_ptr_t) -1)
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return NULL;
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return result;
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}
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