realloc(3) replacement

crux-00011: $SRC/utils/chk_realloc.c

#include "utils/chk_i.h"

void *
chk_realloc (void * here, int was_amt, int becomes_amt)
{
  size_t s = (size_t)becomes_amt;
  void * x;
  if (was_amt < 0) panic ("reallocing anti-memory doesn't work");
  if (becomes_amt < 0) panic ("reallocing to get anti-memory doesn't work");
  if (becomes_amt != (int)s) panic ("improbable size_t screw in realloc");
  chk_use (-was_amt);
  chk_use (becomes_amt);
  x = realloc (here, becomes_amt);
  if (becomes_amt && !x) panic ("realloc returned 0");
  return x;
}



/*

    This file is part of Crux.

    Crux 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.

    Crux 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 Crux.  If not, see <http://www.gnu.org/licenses/>.

*/