Re: [boost] The noexcept Specifier & Block

Subject: Re: [boost] The noexcept Specifier & Block
From: Gabriel Dos Reis (gdr_at_[hidden])
Date: 2009-04-17 10:16:54

On Fri, Apr 17, 2009 at 6:55 AM, Alexander Terekhov <terekhov_at_[hidden]> wrote:
> Gabriel Dos Reis wrote:
>>
>> On Thu, Apr 16, 2009 at 7:11 PM, Alexander Terekhov <terekhov_at_[hidden]> wrote:
>> > Scott McMurray wrote:
>> > [...]
>> >> I don't see how you're going to get the "at throw point" you're asking for.
>> >
>> > Two-phase EH.
>>
>> An implementation strategy used by some compilers.  It is not
>> something required by C++.  It is mysterious why some popular
>> compilers insist on using that strategy when they know they are
>> dealing with C++ applications.
>
> Because that strategy allows to not unwind the stack for unexpected
> exceptions.

So, now we are talking of cost of doing something
not required by C++ semantics; rarely used in practice,
but with a cost imposed on those who don't want it.  A strategy
that hurts performance of C++ programs.

-- Gaby