Typical C++ Exception Handling implementations

Can someone share some ways that current compilers deal with the C++
exception handling mechanism? I'm especially curious about the
overheads associated with the various techniques.


In particular, I'd like to know:
- Ways to track which automatic objects have been constructed and need
to be destructed, and in which order
- If static-analysis methods exist, and what the relative overheads are
of such techniques versus run-time stack-bound methods
- Where the exception object is stored, and when it is constructed and
destructed
- Ways to match the exception object type against the catch handlers


-dr

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