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       1                 :            : /* Test of <sys/select.h> substitute.
       2                 :            :    Copyright (C) 2007-2012 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 <http://www.gnu.org/licenses/>.  */
      16                 :            : 
      17                 :            : /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
      18                 :            : 
      19                 :            : #include <config.h>
      20                 :            : 
      21                 :            : #include <sys/select.h>
      22                 :            : 
      23                 :            : #include "signature.h"
      24                 :            : 
      25                 :            : /* The following may be macros without underlying functions, so only
      26                 :            :    check signature if they are not macros.  */
      27                 :            : #ifndef FD_CLR
      28                 :            : SIGNATURE_CHECK (FD_CLR, void, (int, fd_set *));
      29                 :            : #endif
      30                 :            : #ifndef FD_ISSET
      31                 :            : SIGNATURE_CHECK (FD_ISSET, void, (int, fd_set *));
      32                 :            : #endif
      33                 :            : #ifndef FD_SET
      34                 :            : SIGNATURE_CHECK (FD_SET, int, (int, fd_set *));
      35                 :            : #endif
      36                 :            : #ifndef FD_ZERO
      37                 :            : SIGNATURE_CHECK (FD_ZERO, void, (fd_set *));
      38                 :            : #endif
      39                 :            : 
      40                 :            : /* Check that the 'struct timeval' type is defined.  */
      41                 :            : struct timeval a;
      42                 :            : 
      43                 :            : /* Check that &a.tv_sec is a 'time_t *', ignoring signedness issues.  */
      44                 :            : typedef int verify_tv_sec_type[sizeof (a.tv_sec) == sizeof (time_t) ? 1 : -1];
      45                 :            : 
      46                 :            : /* Check that sigset_t is defined.  */
      47                 :            : sigset_t t2;
      48                 :            : 
      49                 :            : int
      50                 :          1 : main (void)
      51                 :            : {
      52                 :            :   /* Check that FD_ZERO can be used.  This should not yield a warning
      53                 :            :      such as "warning: implicit declaration of function 'memset'".  */
      54                 :            :   fd_set fds;
      55                 :          1 :   FD_ZERO (&fds);
      56                 :            : 
      57                 :          1 :   return 0;
      58                 :            : }