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54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/* Copyright (C) 1991-2014 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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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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# include <stdlib.h>
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extern void *__sbrk (ptrdiff_t increment) __THROW;
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libc_hidden_proto (__sbrk)
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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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void *
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__default_morecore (ptrdiff_t increment)
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{
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void *result = (void *) __sbrk (increment);
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if (result == (void *) -1)
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return NULL;
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return result;
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}
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libc_hidden_def (__default_morecore)
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