macro and text revision (-mdoc version 3)

[unix-history] / usr / src / lib / libc / stdlib / abort.c

/*
* Copyright (c) 1985 Regents of the University of California.
* All rights reserved.
*
* %sccs.include.redist.c%
*/

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)abort.c     5.11 (Berkeley) %G%";
#endif /* LIBC_SCCS and not lint */

#include <sys/signal.h>
#include <stdlib.h>
#include <stddef.h>
#include <unistd.h>

void
abort()
{
       sigset_t mask;

       sigfillset(&mask);
       /*
        * don't block SIGABRT to give any handler a chance; we ignore
        * any errors -- X311J doesn't allow abort to return anyway.
        */
       sigdelset(&mask, SIGABRT);
       (void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
       (void)kill(getpid(), SIGABRT);

       /*
        * if SIGABRT ignored, or caught and the handler returns, do
        * it again, only harder.
        */
       (void)signal(SIGABRT, SIG_DFL);
       (void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
       (void)kill(getpid(), SIGABRT);
       exit(1);
}