1  /* reallocarray function that is glibc compatible.
       2  
       3     Copyright (C) 2017-2023 Free Software Foundation, Inc.
       4  
       5     This file is free software: you can redistribute it and/or modify
       6     it under the terms of the GNU Lesser General Public License as
       7     published by the Free Software Foundation; either version 2.1 of the
       8     License, or (at your option) any later version.
       9  
      10     This file is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      13     GNU Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public License
      16     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      17  
      18  /* written by Darshit Shah */
      19  
      20  #include <config.h>
      21  
      22  #include <stdckdint.h>
      23  #include <stdlib.h>
      24  #include <errno.h>
      25  
      26  void *
      27  reallocarray (void *ptr, size_t nmemb, size_t size)
      28  {
      29    size_t nbytes;
      30    if (ckd_mul (&nbytes, nmemb, size))
      31      {
      32        errno = ENOMEM;
      33        return NULL;
      34      }
      35  
      36    /* Rely on the semantics of GNU realloc.  */
      37    return realloc (ptr, nbytes);
      38  }