SST fully supports the CORBA Smalltalk binding specification for exceptions. Smalltalk exceptions and the IDL exceptions are mapped according to the CORBAExceptionEvent and CORBAExceptionValue protocols. The CORBAExceptionEvent protocol is implemented by SstIdlExceptionDef (namely corbaHandle and corbaRaise*), and the CORBAExceptionValue protocol is defined on Signal (namely corbaExceptionValue). These are fully integrated with the Smalltalk exception handling mechanism.