root/maint/gnulib/lib/reallocarray.c

/* */

DEFINITIONS

1. reallocarray

   1 /* reallocarray function that is glibc compatible.
   2 
   3    Copyright (C) 2017-2021 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 <stdlib.h>
  23 #include <errno.h>
  24 
  25 #include "intprops.h"
  26 
  27 void *
  28 reallocarray (void *ptr, size_t nmemb, size_t size)
     /*  */
  29 {
  30   size_t nbytes;
  31   if (INT_MULTIPLY_WRAPV (nmemb, size, &nbytes))
  32     {
  33       errno = ENOMEM;
  34       return NULL;
  35     }
  36 
  37   /* Rely on the semantics of GNU realloc.  */
  38   return realloc (ptr, nbytes);
  39 }

/* */