/* Test for pvalloc.

   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 <malloc.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;

  unsigned long pagesize = getpagesize ();

  unsigned long ptrval;

  int save;

  errno = 0;

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

     errno to ENOMEM.  */

  p = pvalloc (-1);

  save = errno;

  if (p != NULL)

    merror ("pvalloc (-1) succeeded.");

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

    merror ("pvalloc (-1) errno is not set correctly");

  free (p);

  errno = 0;

  /* Test to expose integer overflow in malloc internals from BZ #15855.  */

  p = pvalloc (-pagesize);

  save = errno;

  if (p != NULL)

    merror ("pvalloc (-pagesize) succeeded.");

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

    merror ("pvalloc (-pagesize) errno is not set correctly");

  free (p);

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

     non-NULL value.  */

  p = pvalloc (0);

  if (p == NULL)

    merror ("pvalloc (0) failed.");

  free (p);

  /* Check the alignment of the returned pointer is correct.  */

  p = pvalloc (32);

  if (p == NULL)

    merror ("pvalloc (32) failed.");

  ptrval = (unsigned long) p;

  if ((ptrval & (pagesize - 1)) != 0)

    merror ("returned pointer is not page aligned.");

  free (p);

  return errors != 0;

}

#define TEST_FUNCTION do_test ()

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