--- include/cwchar.orig	2015-06-17 04:49:22 UTC
+++ include/cwchar
@@ -135,10 +135,8 @@ using ::fgetwc;
 using ::fgetws;
 using ::fputwc;
 using ::fputws;
-using ::fwide;
 using ::getwc;
 using ::putwc;
-using ::ungetwc;
 using ::wcstod;
 #ifndef _LIBCPP_MSVCRT
 using ::wcstof;
@@ -152,10 +150,7 @@ using ::wcstoul;
 #ifndef _LIBCPP_HAS_NO_LONG_LONG
 using ::wcstoull;
 #endif // _LIBCPP_HAS_NO_LONG_LONG
-using ::wcscpy;
 using ::wcsncpy;
-using ::wcscat;
-using ::wcsncat;
 using ::wcscmp;
 using ::wcscoll;
 using ::wcsncmp;
@@ -199,7 +194,6 @@ using ::wmemset;
 using ::wcsftime;
 using ::btowc;
 using ::wctob;
-using ::mbsinit;
 using ::mbrlen;
 using ::mbrtowc;
 using ::wcrtomb;