1  /* Copyright (C) 2004-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       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  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <pthread.h>
      19  #include <stdio.h>
      20  #include <stdlib.h>
      21  
      22  
      23  static pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
      24  
      25  
      26  static void
      27  cl (void *p)
      28  {
      29    pthread_mutex_unlock (&m);
      30  }
      31  
      32  
      33  static void *
      34  tf (void *arg)
      35  {
      36    if (pthread_mutex_lock (&m) != 0)
      37      {
      38        puts ("2nd mutex_lock failed");
      39        exit (1);
      40      }
      41  
      42    exit (0);
      43  }
      44  
      45  
      46  static int
      47  do_test (void)
      48  {
      49    pthread_key_t k;
      50    if (pthread_key_create (&k, cl) != 0)
      51      {
      52        puts ("key_create failed");
      53        return 1;
      54      }
      55    /* Use an arbitrary but valid pointer as the value.  */
      56    if (pthread_setspecific (k, (void *) &k) != 0)
      57      {
      58        puts ("setspecific failed");
      59        return 1;
      60      }
      61  
      62    if (pthread_mutex_lock (&m) != 0)
      63      {
      64        puts ("1st mutex_lock failed");
      65        return 1;
      66      }
      67  
      68    pthread_t th;
      69    if (pthread_create (&th, NULL, tf, NULL) != 0)
      70      {
      71        puts ("create failed");
      72        return 1;
      73      }
      74  
      75    pthread_exit (NULL);
      76  }
      77  
      78  
      79  #define TEST_FUNCTION do_test ()
      80  #include "../test-skeleton.c"