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>