nptl/tst-minstack-exit.c

   1 /* Test that pthread_exit works with the minimum stack size.
   2    Copyright (C) 2018-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   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, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 /* Note: This test is similar to tst-minstack-cancel, but is separate
  20    to avoid spurious test passes due to warm-up effects.  */
  21
  22 #include <limits.h>
  23 #include <unistd.h>
  24 #include <support/check.h>
  25 #include <support/xthread.h>
  26
  27 _Static_assert (__SC_THREAD_STACK_MIN_VALUE == _SC_THREAD_STACK_MIN,
  28                 "__SC_THREAD_STACK_MIN_VALUE is correct");
  29
  30 static void *
  31 threadfunc (void *closure)
  32 {
  33   pthread_exit (threadfunc);
  34   return NULL;
  35 }
  36
  37 static int
  38 do_test (void)
  39 {
  40   pthread_attr_t attr;
  41   xpthread_attr_init (&attr);
  42   xpthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN);
  43   pthread_t thr = xpthread_create (&attr, threadfunc, NULL);
  44   TEST_VERIFY (xpthread_join (thr) == threadfunc);
  45   xpthread_attr_destroy (&attr);
  46   return 0;
  47 }
  48
  49 #include <support/test-driver.c>