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https://https.git.savannah.gnu.org/git/gnulib.git
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Bruno Haible
66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
/* realloc() function that is glibc compatible.
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Copyright (C) 1997, 2003, 2004, 2006, 2007 Free Software Foundation, Inc.
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This program 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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This program 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 this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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/* written by Jim Meyering and Bruno Haible */
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#include <config.h>
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/* Only the AC_FUNC_REALLOC macro defines 'realloc' already in config.h. */
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#ifdef realloc
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# define NEED_REALLOC_GNU
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# undef realloc
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#endif
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/* Specification. */
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#include <stdlib.h>
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#include <errno.h>
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/* Call the system's malloc and realloc below. */
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#undef malloc
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#undef realloc
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/* Change the size of an allocated block of memory P to N bytes,
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with error checking. If N is zero, change it to 1. If P is NULL,
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use malloc. */
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void *
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rpl_realloc (void *p, size_t n)
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{
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void *result;
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#ifdef NEED_REALLOC_GNU
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if (n == 0)
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{
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n = 1;
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/* In theory realloc might fail, so don't rely on it to free. */
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free (p);
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p = NULL;
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}
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#endif
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result = (p == NULL ? malloc (n) : realloc (p, n));
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#if !HAVE_REALLOC_POSIX
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if (result == NULL)
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errno = ENOMEM;
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#endif
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return result;
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}
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