75 lines
2.1 KiB
C
75 lines
2.1 KiB
C
/* Test of <sys/select.h> substitute.
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Copyright (C) 2007-2025 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
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#include <config.h>
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/* Specification. */
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#include <sys/select.h>
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/* Check that the 'struct timeval' type is defined. */
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struct timeval a;
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/* Check that a.tv_sec is wide enough to hold a time_t, ignoring
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signedness issues. */
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typedef int verify_tv_sec_type[sizeof (time_t) <= sizeof (a.tv_sec) ? 1 : -1];
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/* Check that sigset_t is defined. */
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sigset_t t2;
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/* Check that time_t, suseconds_t are defined. */
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time_t t3;
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suseconds_t t4;
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/* Check that the 'struct timespec' type is defined. */
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struct timespec t5;
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/* Check that the 'fd_set' type is defined. */
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fd_set t6;
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/* Check that FD_SETSIZE is defined. */
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#if !FD_SETSIZE
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# error "FD_SETSIZE not positive"
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#endif
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#include "signature.h"
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/* The following may be macros without underlying functions, so only
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check signature if they are not macros. */
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#ifndef FD_CLR
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SIGNATURE_CHECK (FD_CLR, void, (int, fd_set *));
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#endif
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#ifndef FD_ISSET
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SIGNATURE_CHECK (FD_ISSET, void, (int, const fd_set *));
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#endif
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#ifndef FD_SET
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SIGNATURE_CHECK (FD_SET, int, (int, fd_set *));
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#endif
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#ifndef FD_ZERO
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SIGNATURE_CHECK (FD_ZERO, void, (fd_set *));
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#endif
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int
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main (void)
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{
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/* Check that FD_ZERO can be used. This should not yield a warning
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such as "warning: implicit declaration of function 'memset'". */
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fd_set fds;
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FD_ZERO (&fds);
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return 0;
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}
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