gnulib/lib/reallocarray.c

/* reallocarray function that is glibc compatible.

   Copyright (C) 2017-2020 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */

/* written by Darshit Shah */

#include <config.h>

#include <stdlib.h>
#include <errno.h>

#include "xalloc-oversized.h"

void *
reallocarray (void *ptr, size_t nmemb, size_t size)
{
    if (xalloc_oversized (nmemb, size))
      {
        errno = ENOMEM;
        return NULL;
      }

    /* Rely on the semantics of GNU realloc.  */
    return realloc (ptr, nmemb * size);
}