nptl/tst-align.c

   1 /* Copyright (C) 2003 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <pthread.h>
  21 #include <stdbool.h>
  22 #include <stdint.h>
  23 #include <stdio.h>
  24
  25
  26 static void *
  27 tf (void *arg)
  28 {
  29   bool ok = true;
  30
  31   puts ("in thread");
  32
  33   double d = 2.0;
  34   printf ("double:  %g %p %zu\n", d, &d, __alignof (double));
  35   if ((((uintptr_t) &d) & (__alignof (double) - 1)) != 0)
  36     ok = false;
  37
  38   long double ld = 3.0;
  39   printf ("ldouble: %Lg %p %zu\n", ld, &ld, __alignof (long double));
  40   if ((((uintptr_t) &ld) & (__alignof (long double) - 1)) != 0)
  41     ok = false;
  42
  43   return ok ? NULL : (void *) -1l;
  44 }
  45
  46 static int
  47 do_test (void)
  48 {
  49   bool ok = true;
  50
  51   puts ("in main");
  52
  53   double d = 0.0;
  54   printf ("double:  %g %p %zu\n", d, &d, __alignof (double));
  55   if ((((uintptr_t) &d) & (__alignof (double) - 1)) != 0)
  56     ok = false;
  57
  58   long double ld = 1.0;
  59   printf ("ldouble: %Lg %p %zu\n", ld, &ld, __alignof (long double));
  60   if ((((uintptr_t) &ld) & (__alignof (long double) - 1)) != 0)
  61     ok = false;
  62
  63   pthread_t th;
  64   if (pthread_create (&th, NULL, tf, NULL) != 0)
  65     {
  66       puts ("create failed");
  67       return 1;
  68     }
  69
  70   void *res;
  71   if (pthread_join (th, &res) != 0)
  72     {
  73       puts ("join failed");
  74       return 1;
  75     }
  76
  77   if (res != NULL)
  78     ok = false;
  79
  80   return ok ? 0 : 1;
  81 }
  82
  83
  84 #define TEST_FUNCTION do_test ()
  85 #include "../test-skeleton.c"