1  /* Copyright (C) 2002-2023 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  
      21  
      22  static pthread_once_t once = PTHREAD_ONCE_INIT;
      23  
      24  static int global;
      25  
      26  static void
      27  once_handler (void)
      28  {
      29    ++global;
      30  }
      31  
      32  
      33  static int
      34  do_test (void)
      35  {
      36    pthread_once (&once, once_handler);
      37    pthread_once (&once, once_handler);
      38  
      39    if (global != 1)
      40      {
      41        printf ("global = %d, expected 1\n", global);
      42        return 1;
      43      }
      44  
      45    return 0;
      46  }
      47  
      48  #define TEST_FUNCTION do_test ()
      49  #include "../test-skeleton.c"