view tests/test-safe-alloc.c @ 40214:452ab00796c7

Fix undefined behaviour. * lib/bitrotate.h (rotl16, rotr16, rotl8, rotr8): Case x to 'unsigned int', to avoid shift operations on 'int'. * lib/xmemdup0.c (xmemdup0): Don't invoke memcpy with a zero size. * tests/test-count-leading-zeros.c (main): Use a random number that has as many bits as TYPE, not only 2*15 or 2*31 bits. * tests/test-count-trailing-zeros.c (main): Likewise. * tests/test-count-one-bits.c (main): Likewise. * tests/test-memmem.c: Don't include "null-ptr.h". (main): Use zerosize_ptr() instead of null_ptr(). * modules/memmem-tests (Files): Remove tests/null-ptr.h.
author Bruno Haible <bruno@clisp.org>
date Sat, 09 Mar 2019 20:32:25 +0100
parents b06060465f09
children
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/*
 * Test the safe-alloc macros
 *
 * Copyright (C) 2009-2019 Free Software Foundation, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see <https://www.gnu.org/licenses/>.
 *
 * Author: David Lutterkort <lutter@redhat.com>
 */

#include <config.h>

#include "safe-alloc.h"

#include "macros.h"

int
main ()
{
  struct tst
  {
    int a;
    int b;
  };

  struct tst *p = NULL;
  int r;

  r = ALLOC (p);
  ASSERT (r >= 0);

  ASSERT (p->a == 0 && p->b == 0);

  p->a = p->b = 42;
  r = REALLOC_N (p, 5);

  ASSERT (p[0].a == 42 && p[0].b == 42);

  FREE (p);
  ASSERT (p == NULL);

  return 0;
}