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/* Leaving a signal handler executing on the alternate stack.
Copyright (C) 2002-2003 Bruno Haible <bruno@clisp.org>
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 2, 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, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
#include <stddef.h>
#include <signal.h>
#if HAVE_SYS_SIGNAL_H
# include <sys/signal.h>
#endif
/* For MacOSX. */
#ifndef SS_ONSTACK
#define SS_ONSTACK SA_ONSTACK
#endif
void
sigsegv_reset_onstack_flag (void)
{
stack_t ss;
if (sigaltstack (NULL, &ss) >= 0)
{
ss.ss_flags &= ~SS_ONSTACK;
sigaltstack (&ss, NULL);
}
}
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