1  /* Verify that ftime is sane.
       2     Copyright (C) 2014-2023 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  #include <features.h>
      20  #include <sys/timeb.h>
      21  #include <libc-diag.h>
      22  
      23  #include <support/check.h>
      24  
      25  static int
      26  do_test (void)
      27  {
      28    struct timeb prev, curr = {.time = 0, .millitm = 0};
      29    int sec = 0;
      30  
      31    while (sec != 3)
      32      {
      33        prev = curr;
      34  
      35        /* ftime was deprecated on 2.31.  */
      36        DIAG_PUSH_NEEDS_COMMENT;
      37        DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wdeprecated-declarations");
      38  
      39        TEST_COMPARE (ftime (&curr), 0);
      40  
      41        DIAG_POP_NEEDS_COMMENT;
      42  
      43        TEST_VERIFY (curr.time >= prev.time);
      44  
      45        if (curr.time == prev.time)
      46  	TEST_VERIFY (curr.millitm >= prev.millitm);
      47  
      48        if (curr.time > prev.time)
      49          sec ++;
      50      }
      51    return 0;
      52  }
      53  
      54  #include <support/test-driver.c>