--- /dev/null
+++ Libc/Libc-1158.50.2/os/debug_private.h
@@ -0,0 +1,77 @@
+/* Copyright (c) 2012-2013 Apple 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@
+ */
+
+#ifndef __OS_DEBUG_LOG_H__
+#define __OS_DEBUG_LOG_H__
+
+#include <Availability.h>
+#include <TargetConditionals.h>
+
+#include <os/base_private.h>
+#include <stdarg.h>
+
+__OSX_AVAILABLE_STARTING(__MAC_10_9, __IPHONE_6_0)
+OS_FORMAT_PRINTF(1, 2)
+extern void
+_os_debug_log(const char *msg, ...);
+
+/* The os_debug_log macros insert spaces before the message. If logging to a file,
+ * the spaces will be replaced by a timestamp. If logging to syslog, they will
+ * be skipped (syslog knows what time it is). There are 20 spaces because the
+ * timestamp is printed as %16llu + 4 spaces before the next column.
+ * 10^16 ns = 3.8 months. Don't run your process in _debug for that long. This
+ * isn't syslog.
+ */
+#define _OS_DEBUG_LOG_PREFIX "                    "
+
+#define os_debug_log(tag, fmt, ...) __extension__({\
+	_os_debug_log(_OS_DEBUG_LOG_PREFIX "%s: " fmt, tag, ## __VA_ARGS__); \
+})
+
+#define os_debug_log_ctx(tag, ctx, fmt, ...) __extension__({\
+	_os_debug_log(_OS_DEBUG_LOG_PREFIX "[%p]  %s: " fmt, ctx, tag, ## __VA_ARGS__); \
+})
+
+/* This is useful for clients who wish for the messages generated by os_debug_log()
+ * or os_assumes() failures to go somewhere other than (or in addition to) the
+ * system log, for example launchd or syslogd itself. If you don't wish for the
+ * message to be logged to the system log, then return true (to indicate that
+ * the message has been handled). If you want the default behavior, return
+ * false. Please use this macro, rather than directly declaring a function,
+ * since the declaration magic may change in the future.
+ */
+#define os_debug_log_redirect(func) \
+	__attribute__((__used__)) \
+	__attribute__((__visibility__("default"))) \
+	bool _os_debug_log_redirect_func(const char *msg) { \
+		return func(msg); \
+	}
+
+# pragma mark -
+# pragma mark Private To Libc
+
+// str must be modifiable (non-const)!
+__OSX_AVAILABLE_STARTING(__MAC_10_9, __IPHONE_6_0)
+extern void
+_os_debug_log_error_str(char *str);
+
+#endif /* __OS_DEBUG_LOG_H__ */