--- /dev/null
+++ Libc/Libc-262/stdlib/abort.c
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License").  You may not use this file except in compliance with the
+ * License.  Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
+ * 
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+/*
+ * Copyright (c) 1985, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+
+#include <sys/signal.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <unistd.h>
+
+void
+abort()
+{
+	int mypid = getpid();
+	volatile long i;
+	volatile long *excp = 0;
+	sigset_t mask;
+
+	sigfillset(&mask);
+	/*
+	 * don't block SIGABRT to give any handler a chance; we ignore
+	 * any errors -- X3J11 doesn't allow abort to return anyway.
+	 */
+	sigdelset(&mask, SIGABRT);
+	(void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
+	(void)kill(mypid, 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(mypid, SIGABRT);
+
+	i = *excp;		/* still no joy; cause a processor trap */
+	i = *++excp;		/* maybe an unaligned address will do it */
+
+	/* okay, let's try to write text space */
+	excp = (volatile long *)&abort;
+	*excp = ~*excp;
+	*excp = ~*excp;
+
+	i /= 0;			/* this time for sure! */
+
+	/* increasing desperation; try signals until one of them sticks */
+	(void)kill(mypid, SIGILL);
+	(void)kill(mypid, SIGBUS);
+
+	/* almost last resort */
+	_exit(1);
+
+	/* if _exit returns, do not return */
+	for (;;)
+		sleep(600);
+}