diff --git a/libc/include/string.h b/libc/include/string.h
index 37d22c4..8963e3d 100644
--- a/libc/include/string.h
+++ b/libc/include/string.h
@@ -49,6 +49,7 @@
 extern char* __strchr_chk(const char *, int, size_t);
 
 extern char*  strrchr(const char *, int) __purefunc;
+extern char* __strrchr_chk(const char *, int, size_t);
 
 extern size_t strlen(const char *) __purefunc;
 extern size_t __strlen_chk(const char *, size_t);
@@ -263,8 +264,6 @@
     return __strchr_chk(s, c, bos);
 }
 
-extern char* __strrchr_chk(const char *, int, size_t);
-
 __BIONIC_FORTIFY_INLINE
 char* strrchr(const char *s, int c) {
     size_t bos = __bos(s);
diff --git a/libc/include/wchar.h b/libc/include/wchar.h
index 76ac02c..32cf127 100644
--- a/libc/include/wchar.h
+++ b/libc/include/wchar.h
@@ -147,6 +147,9 @@
 extern int               wprintf(const wchar_t *, ...);
 extern int               wscanf(const wchar_t *, ...);
 
+extern size_t wcslcat(wchar_t*, const wchar_t*, size_t);
+extern size_t wcslcpy(wchar_t*, const wchar_t*, size_t);
+
 /* No really supported.  These are just for making libstdc++-v3 happy.  */
 typedef void *wctrans_t;
 extern wint_t		 towctrans(wint_t, wctrans_t);