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// Copyright (c) 2009-2019 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#if defined(HAVE_CONFIG_H)
#include <config/bitcoin-config.h>
#endif
#if defined(HAVE_SYS_SELECT_H)
#ifdef HAVE_CSTRING_DEPENDENT_FD_ZERO
#include <cstring>
#endif
#include <sys/select.h>
// trigger: Call FD_SET to trigger __fdelt_chk. FORTIFY_SOURCE must be defined
// as >0 and optimizations must be set to at least -O2.
// test: Add a file descriptor to an empty fd_set. Verify that it has been
// correctly added.
bool sanity_test_fdelt()
{
fd_set fds;
FD_ZERO(&fds);
FD_SET(0, &fds);
return FD_ISSET(0, &fds);
}
#endif
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