LCOV - GNU Libidn - gltests/test-gettimeofday.c

 Line data Source code

 1  : /*
 2  : * Copyright (C) 2005, 2007, 2009-2020 Free Software Foundation, Inc.
 3  : * Written by Jim Meyering.
 4  : *
 5  : * This program is free software: you can redistribute it and/or modify
 6  : * it under the terms of the GNU General Public License as published by
 7  : * the Free Software Foundation; either version 3 of the License, or
 8  : * (at your option) any later version.
 9  : *
 10  : * This program 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
 13  : * GNU General Public License for more details.
 14  : *
 15  : * You should have received a copy of the GNU General Public License
 16  : * along with this program. If not, see <https://www.gnu.org/licenses/>. */
 17  : 
 18  : #include <config.h>
 19  : 
 20  : #include <sys/time.h>
 21  : 
 22  : #include "signature.h"
 23  : SIGNATURE_CHECK (gettimeofday, int,
 24  : (struct timeval *, GETTIMEOFDAY_TIMEZONE *));
 25  : 
 26  : #include <time.h>
 27  : 
 28  : #include <stdio.h>
 29  : #include <string.h>
 30  : 
 31  : int
 32  1 : main (void)
 33  : {
 34  1 : time_t t = 0;
 35  : struct tm *lt;
 36  : struct tm saved_lt;
 37  : struct timeval tv;
 38  1 : lt = localtime (&t);
 39  1 : saved_lt = *lt;
 40  1 : gettimeofday (&tv, NULL);
 41  1 : if (memcmp (lt, &saved_lt, sizeof (struct tm)) != 0)
 42  : {
 43  0 : fprintf (stderr, "gettimeofday still clobbers the localtime buffer!\n");
 44  0 : return 1;
 45  : }
 46  1 : return 0;
 47  : }