-x 

Enables C++ exception handling. Enabled by default.  

-xd 

Enables destructor cleanup. Calls destructors for all automatically declared objects between the scope of the catch and throw statements when an exception is thrown. Enabled by default.  

-xp 

Enables the program to use the __ThrowFileName global to obtain the file where the exception occurred and the __ThrowLineNumber global to access the line number from where the C++ exception was thrown. Disabled by default.