1  /* Test of <time.h> substitute.
       2     Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
       3  
       4     This program is free software: you can redistribute it and/or modify
       5     it under the terms of the GNU General Public License as published by
       6     the Free Software Foundation, either version 3 of the License, or
       7     (at your option) any later version.
       8  
       9     This program 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
      12     GNU General Public License for more details.
      13  
      14     You should have received a copy of the GNU General Public License
      15     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      16  
      17  /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
      18  
      19  #include <config.h>
      20  
      21  #include <time.h>
      22  
      23  /* Check that the types are all defined.  */
      24  struct timespec t1;
      25  #if 0
      26  /* POSIX:2008 does not require pid_t in <time.h> unconditionally, and indeed
      27     it's missing on Mac OS X 10.5, FreeBSD 6.4, OpenBSD 4.9, mingw.  */
      28  pid_t t2;
      29  #endif
      30  
      31  /* Check that NULL can be passed through varargs as a pointer type,
      32     per POSIX 2008.  */
      33  static_assert (sizeof NULL == sizeof (void *));
      34  
      35  /* Check that TIME_UTC is defined and a positive integer.  */
      36  int t3 = TIME_UTC;
      37  static_assert (TIME_UTC > 0);
      38  
      39  int
      40  main (void)
      41  {
      42    return 0;
      43  }