1 #ifdef __cplusplus 2 # undef new 3 # undef this 4 # undef delete 5 # undef class 6 # undef virtual 7 # undef typename 8 # undef protected 9 # undef public 10 # undef namespace 11 # undef false 12 # undef true 13 #endif 14 #undef CLICK_CXX_PROTECTED 15