glibc/nptl/tst-align.c

/* Copyright (C) 2003 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.

   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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <pthread.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>


static void *
tf (void *arg)
{
  bool ok = true;

  puts ("in thread");

  double d = 2.0;
  printf ("double:  %g %p %zu\n", d, &d, __alignof (double));
  if ((((uintptr_t) &d) & (__alignof (double) - 1)) != 0)
    ok = false;

  long double ld = 3.0;
  printf ("ldouble: %Lg %p %zu\n", ld, &ld, __alignof (long double));
  if ((((uintptr_t) &ld) & (__alignof (long double) - 1)) != 0)
    ok = false;

  return ok ? NULL : (void *) -1l;
}

static int
do_test (void)
{
  bool ok = true;

  puts ("in main");

  double d = 0.0;
  printf ("double:  %g %p %zu\n", d, &d, __alignof (double));
  if ((((uintptr_t) &d) & (__alignof (double) - 1)) != 0)
    ok = false;

  long double ld = 1.0;
  printf ("ldouble: %Lg %p %zu\n", ld, &ld, __alignof (long double));
  if ((((uintptr_t) &ld) & (__alignof (long double) - 1)) != 0)
    ok = false;

  pthread_t th;
  if (pthread_create (&th, NULL, tf, NULL) != 0)
    {
      puts ("create failed");
      return 1;
    }

  void *res;
  if (pthread_join (th, &res) != 0)
    {
      puts ("join failed");
      return 1;
    }

  if (res != NULL)
    ok = false;

  return ok ? 0 : 1;
}


#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"