--- /dev/null
+++ Libc/Libc-997.1.1/include/secure/_string.h
@@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 2007 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 _STRING_H_
+# error "Never use <secure/_string.h> directly; include <string.h> instead."
+#endif
+
+#ifndef _SECURE__STRING_H_
+#define _SECURE__STRING_H_
+
+#include <Availability.h>
+#include <sys/cdefs.h>
+#include <secure/_common.h>
+
+#if _USE_FORTIFY_LEVEL > 0
+
+#ifndef __has_builtin
+#define _undef__has_builtin
+#define __has_builtin(x) 0
+#endif
+
+/* <rdar://problem/12622659> */
+#if defined(__clang__) && \
+    ((defined(__apple_build_version__) && __apple_build_version__ >= 4260006) || \
+     (!defined(__apple_build_version__) && (__clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 3))))
+#define __HAS_FIXED_CHK_PROTOTYPES 1
+#else
+#define __HAS_FIXED_CHK_PROTOTYPES 0
+#endif
+
+/* memccpy, memcpy, mempcpy, memmove, memset, strcpy, strlcpy, stpcpy,
+   strncpy, stpncpy, strcat, strlcat, and strncat */
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000 || __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
+#if __has_builtin(__builtin___memccpy_chk) && __HAS_FIXED_CHK_PROTOTYPES
+#undef memccpy
+#define memccpy(dest, src, c, len)                                  \
+  __builtin___memccpy_chk (dest, src, c, len, __darwin_obsz0 (dest))
+#endif
+#endif
+
+#if __has_builtin(__builtin___memcpy_chk) || defined(__GNUC__)
+#undef memcpy
+#define memcpy(dest, src, len)					\
+  __builtin___memcpy_chk (dest, src, len, __darwin_obsz0 (dest))
+#endif
+
+#if __has_builtin(__builtin___memmove_chk) || defined(__GNUC__)
+#undef memmove
+#define memmove(dest, src, len)					\
+  __builtin___memmove_chk (dest, src, len, __darwin_obsz0 (dest))
+#endif
+
+#if __has_builtin(__builtin___memset_chk) || defined(__GNUC__)
+#undef memset
+#define memset(dest, val, len)					\
+  __builtin___memset_chk (dest, val, len, __darwin_obsz0 (dest))
+#endif
+
+#if __has_builtin(__builtin___strcpy_chk) || defined(__GNUC__)
+#undef strcpy
+#define strcpy(dest, src)					\
+  __builtin___strcpy_chk (dest, src, __darwin_obsz (dest))
+#endif
+
+#if __DARWIN_C_LEVEL >= 200809L
+#if __has_builtin(__builtin___stpcpy_chk) || defined(__GNUC__)
+#undef stpcpy
+#define stpcpy(dest, src)					\
+  __builtin___stpcpy_chk (dest, src, __darwin_obsz (dest))
+#endif
+
+#if __has_builtin(__builtin___stpncpy_chk) || __APPLE_CC__ >= 5666 || __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7)
+#undef stpncpy
+#define stpncpy(dest, src, len)					\
+  __builtin___stpncpy_chk (dest, src, len, __darwin_obsz (dest))
+#endif
+#endif /* _DARWIN_C_LEVEL >= 200809L */
+
+#if __DARWIN_C_LEVEL >= __DARWIN_C_FULL
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000 || __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
+#if __has_builtin(__builtin___strlcpy_chk) && __HAS_FIXED_CHK_PROTOTYPES
+#undef strlcpy
+#define strlcpy(dest, src, len)                                 \
+  __builtin___strlcpy_chk (dest, src, len, __darwin_obsz (dest))
+#endif
+
+#if __has_builtin(__builtin___strlcat_chk) && __HAS_FIXED_CHK_PROTOTYPES
+#undef strlcat
+#define strlcat(dest, src, len)                                 \
+  __builtin___strlcat_chk (dest, src, len, __darwin_obsz (dest))
+#endif
+#endif /* __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000 || __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090 */
+#endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */
+
+#if __has_builtin(__builtin___strncpy_chk) || defined(__GNUC__)
+#undef strncpy
+#define strncpy(dest, src, len)					\
+  __builtin___strncpy_chk (dest, src, len, __darwin_obsz (dest))
+#endif
+
+#if __has_builtin(__builtin___strcat_chk) || defined(__GNUC__)
+#undef strcat
+#define strcat(dest, src)					\
+  __builtin___strcat_chk (dest, src, __darwin_obsz (dest))
+#endif
+
+#if ! (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < 32000)
+#if __has_builtin(__builtin___strncat_chk) || defined(__GNUC__)
+#undef strncat
+#define strncat(dest, src, len)					\
+  __builtin___strncat_chk (dest, src, len, __darwin_obsz (dest))
+#endif
+#endif
+
+#ifdef _undef__has_builtin
+#undef _undef__has_builtin
+#undef __has_builtin
+#endif
+
+#undef __HAS_FIXED_CHK_PROTOTYPES
+
+#endif /* _USE_FORTIFY_LEVEL > 0 */
+#endif /* _SECURE__STRING_H_ */