--- Libc/Libc-1725.40.4/sys/sigaction.c
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
- * Copyright (c) 1999-2017 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- * 
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- * 
- * The 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- * 
- * @APPLE_LICENSE_HEADER_END@
- */
-
-#if __has_include(<CrashReporterClient.h>)
-#include <CrashReporterClient.h>
-#else
-#define CRSetCrashLogMessage(...)
-#endif
-#include <stdlib.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <signal.h>
-#include <sys/signal.h>
-#include <errno.h>
-
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wstrict-prototypes"
-
-extern int __platform_sigaction (int sig,
-		const struct sigaction * __restrict nsv,
-		struct sigaction * __restrict osv);
-
-int
-sigaction (int sig, const struct sigaction * __restrict nsv,
-		struct sigaction * __restrict osv)
-{
-	int ret = __platform_sigaction(sig, nsv, osv);
-#ifdef FEATURE_SIGNAL_RESTRICTION
-	// Note: The "sig != 0" here is to force the compiler to maintain that "sig"
-	// is live, and in a register, after __sigaction so it is visible in the
-	// crashing register state.
-	if (ret == -1 && errno == ENOTSUP && sig != 0) {
-		CRSetCrashLogMessage("sigaction on fatal signals is not supported");
-		__builtin_trap();
-	}
-#endif
-	return ret;
-}
-
-// XXX
-#ifdef __DYNAMIC__
-
-int
-_sigaction_nobind (sig, nsv, osv)
-        int sig;
-	register const struct sigaction *nsv;
-        register struct sigaction *osv;
-{
-    return sigaction(sig, nsv, osv);
-}
-#endif
-
-#pragma clang diagnostic pop