On Fri, Apr 17, 2009 at 12:59 PM, Alexander Terekhov <terekhov@web.de> wrote:
Gabriel Dos Reis wrote: [...]
http://www.codesourcery.com/public/cxx-abi/abi-eh.html
And quoting for the document:
# A two-phase exception-handling model is not strictly necessary to implement # C++ language semantics, but it does provide some benefits. For example, ^^^^^^^^^^^^
# the first phase allows an exception-handling mechanism to dismiss an # exception before stack unwinding begins, which allows resumptive exception # handling (correcting the exceptional condition and resuming execution at # the point where it was raised). While C++ does not support resumptive # exception handling, other languages do, and the two-phase model allows # C++ to coexist with those languages on the stack.
How many industrial strength languages support resumptive exception handling?
Irrelevant.
Not, if you're talking about the impact of EH.
There are other benefits provided by two-phase EH apart from resumption.
Such as?
Avoiding unwinding for unexpected exceptions, for example.
Which is not C++ semantics.
regards, alexander.
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