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diff --git a/libstdc++-v3/include/c_std/cstring b/libstdc++-v3/include/c_std/cstring
new file mode 100644
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+++ b/libstdc++-v3/include/c_std/cstring
@@ -0,0 +1,122 @@
+// -*- C++ -*- forwarding header.
+
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2009
+// Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file cstring
+ *  This is a Standard C++ Library file.  You should @c #include this file
+ *  in your programs, rather than any of the "*.h" implementation files.
+ *
+ *  This is the C++ version of the Standard C Library header @c string.h,
+ *  and its contents are (mostly) the same as that header, but are all
+ *  contained in the namespace @c std (except for names which are defined
+ *  as macros in C).
+ */
+
+//
+// ISO C++ 14882: 20.4.6  C library
+//
+
+#ifndef _GLIBCXX_CSTRING
+#define _GLIBCXX_CSTRING 1
+
+#pragma GCC system_header
+
+#include <bits/c++config.h>
+#include <cstddef>
+#include <string.h>
+
+// Get rid of those macros defined in <string.h> in lieu of real functions.
+#undef memcpy
+#undef memmove
+#undef strcpy
+#undef strncpy
+#undef strcat
+#undef strncat
+#undef memcmp
+#undef strcmp
+#undef strcoll
+#undef strncmp
+#undef strxfrm
+#undef memchr
+#undef strchr
+#undef strcspn
+#undef strpbrk
+#undef strrchr
+#undef strspn
+#undef strstr
+#undef strtok
+#undef memset
+#undef strerror
+#undef strlen
+
+_GLIBCXX_BEGIN_NAMESPACE(std)
+
+  using ::memcpy;
+  using ::memmove;
+  using ::strcpy;
+  using ::strncpy;
+  using ::strcat;
+  using ::strncat;
+  using ::memcmp;
+  using ::strcmp;
+  using ::strcoll;
+  using ::strncmp;
+  using ::strxfrm;
+  using ::strcspn;
+  using ::strspn;
+  using ::strtok;
+  using ::memset;
+  using ::strerror;
+  using ::strlen;
+  using ::memchr;
+  using ::strchr;
+  using ::strpbrk;
+  using ::strrchr;
+  using ::strstr;
+
+#ifndef __CORRECT_ISO_CPP_STRING_H_PROTO
+  inline void*
+  memchr(void* __p, int __c, size_t __n)
+  { return memchr(const_cast<const void*>(__p), __c, __n); }
+
+  inline char*
+  strchr(char* __s1, int __n)
+  { return __builtin_strchr(const_cast<const char*>(__s1), __n); }
+
+  inline char*
+  strpbrk(char* __s1, const char* __s2)
+  { return __builtin_strpbrk(const_cast<const char*>(__s1), __s2); }
+
+  inline char*
+  strrchr(char* __s1, int __n)
+  { return __builtin_strrchr(const_cast<const char*>(__s1), __n); }
+
+  inline char*
+  strstr(char* __s1, const char* __s2)
+  { return __builtin_strstr(const_cast<const char*>(__s1), __s2); }
+#endif
+
+_GLIBCXX_END_NAMESPACE
+
+#endif