Re: [boost] The noexcept Specifier & Block

Subject: Re: [boost] The noexcept Specifier & Block
From: Alexander Terekhov (terekhov_at_[hidden])
Date: 2009-04-17 13:59:49

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. There are other benefits provided by two-phase EH apart from resumption.

Avoiding unwinding for unexpected exceptions, for example.

regards,
alexander.