Re: ITP: octave-2.1.71

[David Bateman]

James R. Phillips wrote:

> --- Brian Dessent  wrote:
>
>  
>
> > Out of curiosity, what if anything have you done to address the SJLJ
> > issue/PR 14563?  To summarize, the Cygwin packaged gcc has had
> > --enable-sjlj-exceptions for quite a while because DW2 exceptions are
> > broken in certain circumstances (namely, when throwing an exception in a
> > function used in a callback where the caller doesn't know DW2, eg. win32
> > api.)  I don't know much at all about octave but if it does not use any
> > callbacks in these situations then it might be worthwhile if you
> > compiled the binaries with a DW2 EH-enabled gcc, to avoid the massive
> > speed hit reported.
> >
> > Brian
> >
> >    
>
> Brian,
>
> This issue occurs in John Eaton's list of stuff to do, but I don't know
> anything else about it.  Will forward to octave maintainers list for comments.
>
> Thanks.
>
> Jim Phillips
>
>  
I'm working on getting a mingw build working that avoids the speed hit. 
Using "nothrow new" would mean rather a large number of changes within 
octave sources itself, and probably as much work as a mingw build, so I 
prefer to work on a mingw build. In any case Paul Thomas reported that 
the SJLJ issue equally affects the vtable in octave and so we also take 
a large hit there, which can't be addressed with "nothrow new"..

Cheers
David

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