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I had a strange problem , declare a static member variable whose name is B class in A class . And initialize in the cpp file. but the constructor of B class was never called. I try to use some small test , the test constructor could be called normally. so it is very strange for our production system. The code like this , in hpp : class Test { public: Test() { ofstream file("/tmp/wup.txt",ios::app); file << "wup in test" << endl; file.close(); } }; //## An extended personality class TsdNAExtPersonality : public TsdNAPersonality{ public: TsdNAExtPersonality( s_gg62_personRec * gg62Header,

Can anybody tell me how to activate RTTI in c++ when working on unix. I heard that it can be disabled and enabled. on my unix environment,how could i check whether RTTI is enabled or disabled? I am using the aCC compiler on HPUX. Are you using g++ or some other compiler? In g++ RTTI is enabled by default IIRC, and you can disable it with -fno-rtti . To test whether it is active or not use dynamic_cast or typeid UPDATE I believe that HPUX's aCC / aC++ also has RTTI on by default, and I am unaware of a way to disable it. Check your man pages . gcc has it on by default. Check if typeid(foo).name(