Re: [boost] std::exception -- Re: Re: Re: Re: Re:AttemptingresolutionofThreads&ExceptionsIssue

From: Victor A. Wagner, Jr. (vawjr_at_[hidden])
Date: 2002-08-14 12:40:18

At Wednesday 2002/08/14 09:00, you wrote:
>From: "David Abrahams" <dave_at_[hidden]>
> > From: "Peter Dimov" <pdimov_at_[hidden]>
> >
> > > From: "Anthony Williams" <anthwil_at_[hidden]>
> > > >
> > > > In general, it is not possible to propagate arbitrary exceptions
>across
> > > thread
> > > > boundaries [...]
> > >
> > > ... without compiler support. "Ordinary" exception handling already
> > provides
> > > the necessary primitives.
> >
> > Seriously? Care to give an outline of how that would work using existing
> > constructs?
>
>Well, I am not a compiler writer, but it seems to me that to implement
>"throw;" and "catch", the compiler already needs a way to copy the
>exception, complete with its original type. :-)

I don't see that at all.  The catch() clause specifies the type it's 
expecting and it will be copied and sliced if need be to match.

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Victor A. Wagner Jr.      http://rudbek.com
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