/* Test for posix_memalign.

   Copyright (C) 2013-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C 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.

   The GNU C 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 the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <errno.h>

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include <unistd.h>

static int errors = 0;

static void

merror (const char *msg)

{

  ++errors;

  printf ("Error: %s\n", msg);

}

static int

do_test (void)

{

  void *p;

  int ret;

  unsigned long pagesize = getpagesize ();

  unsigned long ptrval;

  p = NULL;

  /* An attempt to allocate a huge value should return ENOMEM and

     p should remain NULL.  */

  ret = posix_memalign (&p, sizeof (void *), -1);

  if (ret != ENOMEM)

    merror ("posix_memalign (&p, sizeof (void *), -1) succeeded.");

  if (ret == ENOMEM && p != NULL)

    merror ("returned an error but pointer was modified");

  free (p);

  p = NULL;

  /* Test to expose integer overflow in malloc internals from BZ #15857.  */

  ret = posix_memalign (&p, pagesize, -pagesize);

  if (ret != ENOMEM)

    merror ("posix_memalign (&p, pagesize, -pagesize) succeeded.");

  free (p);

  p = NULL;

  /* Test to expose integer overflow in malloc internals from BZ #16038.  */

  ret = posix_memalign (&p, -1, pagesize);

  if (ret != EINVAL)

    merror ("posix_memalign (&p, -1, pagesize) succeeded.");

  free (p);

  p = NULL;

  /* A zero-sized allocation should succeed with glibc, returning zero

     and setting p to a non-NULL value.  */

  ret = posix_memalign (&p, sizeof (void *), 0);

  if (ret != 0 || p == NULL)

    merror ("posix_memalign (&p, sizeof (void *), 0) failed.");

  free (p);

  ret = posix_memalign (&p, 0x300, 10);

  if (ret != EINVAL)

    merror ("posix_memalign (&p, 0x300, 10) succeeded.");

  ret = posix_memalign (&p, 0, 10);

  if (ret != EINVAL)

    merror ("posix_memalign (&p, 0, 10) succeeded.");

  p = NULL;

  ret = posix_memalign (&p, 0x100, 10);

  if (ret != 0)

    merror ("posix_memalign (&p, 0x100, 10) failed.");

  if (ret == 0 && p == NULL)

    merror ("returned success but pointer is NULL");

  ptrval = (unsigned long) p;

  if (ret == 0 && (ptrval & 0xff) != 0)

    merror ("pointer is not aligned to 0x100");

  free (p);

  return errors != 0;

}

#define TEST_FUNCTION do_test ()

#include "../test-skeleton.c"