Mercurial > hg > octave-nkf > gnulib-hg
view tests/test-gettimeofday.c @ 12849:4f2addafd34f
gettimeofday: expose type of second argument
Needed to silence compiler warnings such as:
test-gettimeofday.c:23: warning: initialization from incompatible pointer type
based on whether gettimeofday complies with POSIX or provides
the extension of struct timezone.
* m4/gettimeofday.m4 (gl_FUNC_GETTIMEOFDAY): Do better detection
of glibc extension signature, and define GETTIMEOFDAY_TIMEZONE.
* tests/test-gettimeofday.c: Use it to silence warning.
* doc/posix-functions/gettimeofday.texi (gettimeofday): Document
the issue.
Signed-off-by: Eric Blake <ebb9@byu.net>
author | Eric Blake <ebb9@byu.net> |
---|---|
date | Sat, 30 Jan 2010 07:47:40 -0700 |
parents | f68718212da8 |
children | 97fc9a21a8fb |
line wrap: on
line source
/* * Copyright (C) 2005, 2007, 2009, 2010 Free Software Foundation, Inc. * Written by Jim Meyering. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <config.h> #include <sys/time.h> #include "signature.h" SIGNATURE_CHECK (gettimeofday, int, (struct timeval *, GETTIMEOFDAY_TIMEZONE *)); #include <time.h> #include <stdio.h> #include <string.h> int main (void) { time_t t = 0; struct tm *lt; struct tm saved_lt; struct timeval tv; lt = localtime (&t); saved_lt = *lt; gettimeofday (&tv, NULL); if (memcmp (lt, &saved_lt, sizeof (struct tm)) != 0) { fprintf (stderr, "gettimeofday still clobbers the localtime buffer!\n"); return 1; } return 0; }