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[Caml-list] Exceptions and at_exit
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Date: -- (:)
From: Xavier Leroy <xavier.leroy@i...>
Subject: Re: [Caml-list] Exceptions and at_exit
> What if you did something like:
> 
>     try ... with
>         Failure msg as exn -> <do some stuff>; raise exn
> 
> Would that leave the original traceback intact?

Yes -- provided <some stuff> doesn't raise exceptions.  The trace back
mechanism relies on reference equality (==) on exception values: if
the program raises an exception that is == to the latest exception
raised, this is considered as a "re-raise" and adds to the traceback;
otherwise, it's considered as an "initial raise" and a fresh traceback is
started.

- Xavier Leroy
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