Binary files a/dual_control and b/dual_control differ

@@ -21,6 +21,9 @@ public:

     {

         return ::sysconf (name);

     }

+    const char *getlogin() const override {

+         return ::getlogin();

+    }

 };

 static unistd sys_unistd (unistd::delegate (new impl));

 }