> After combination the opinions from Ying and Tony, the current fix is the > simplest. Any other changes will make codes more complex. So I prefer to > keep current style. What's your opinion? Not sure which one you mean as "the current fix" (they are both one line, adding a check for param_extension - so neither looks simpler than the other :-). My opinion is that Ying's suggestion to make einj_get_parameter_address() return NULL is the right one. -Tony ��.n��������+%������w��{.n�����{�����ܨ}���Ơz�j:+v�����w����ޙ��&�)ߡ�a����z�ޗ���ݢj��w�f