tst-tls4modb.c 1.5 KB

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  1. /* Copyright (C) 2003 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Lesser General Public
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, see
  14. <http://www.gnu.org/licenses/>. */
  15. #include <stdio.h>
  16. #include <stdlib.h>
  17. #include <unistd.h>
  18. #if HAVE___THREAD && defined HAVE_TLS_MODEL_ATTRIBUTE
  19. static int i;
  20. int bar;
  21. static __thread void *foo [32 / sizeof (void *)]
  22. __attribute__ ((tls_model ("initial-exec"), aligned (sizeof (void *))))
  23. = { &i, &bar };
  24. void
  25. test1 (void)
  26. {
  27. size_t s;
  28. if (foo [0] != &i || foo [1] != &bar)
  29. abort ();
  30. foo [0] = NULL;
  31. foo [1] = NULL;
  32. for (s = 0; s < sizeof (foo) / sizeof (void *); ++s)
  33. {
  34. if (foo [s])
  35. abort ();
  36. foo [s] = &foo[s];
  37. }
  38. }
  39. void
  40. test2 (void)
  41. {
  42. size_t s;
  43. for (s = 0; s < sizeof (foo) / sizeof (void *); ++s)
  44. {
  45. if (foo [s] != &foo [s])
  46. abort ();
  47. foo [s] = &foo [s ^ 1];
  48. }
  49. }
  50. #endif