51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
/* Copyright (C) 1991, 1992, 1993, 1994, 1995 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 modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with the GNU C Library; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, 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 __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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__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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__ptr_t result = (__ptr_t) __sbrk (increment);
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if (result == (__ptr_t) -1)
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return NULL;
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return result;
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}
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