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Subject: Re: [boost] Running b2 on develop needs asynch-exceptions=on
From: Paul A. Bristow (pbristow_at_[hidden])
Date: 2015-03-16 14:23:51

> -----Original Message-----
> From: Boost [mailto:boost-bounces_at_[hidden]] On Behalf Of Vladimir Prus
> Sent: 16 March 2015 16:51
> To: boost_at_[hidden]
> Subject: Re: [boost] Running b2 on develop needs asynch-exceptions=on
> On 03/16/2015 03:19 PM, John Maddock wrote:
> >
> >>>
> >>>
> >>>
> >>> looks as though a fix is still needed?
> >>
> >> Since I did not get a response, I went ahead removing all
> >> <asynch-exceptions>on from Boost.Test Jamfile, and pushed to devel branch. Could you give it a
> >>
> >> Should further changes be needed, they can be done at later time -
> >> subject to keeping top-level build with no options working.
> >>
> >
> > I'm not at all sure this is the right fix: I believe Boost.Test really does need
asynch-exception support
> turned on to work it's magic.
> In that thread, Gennadiy say it does not need that from Boost.System, that it only needs client to
set that.
> It's not quite clear whether Boost.Test itself should be built with that or not.
> Anyway, my primary point, if you allow a bit of ranting, is that it's clearly Boost.Test that
tries to use
> custom settings that cause issues, but the people who appear to care most are Jürgen and Paul and
> and I, neither of whom are Boost.Test maintainers. That's not really productive. So with this
change, it's up
> to Boost.Test maintainers to do whatever is right, which might be updating documentation, or using
> explicit /EHa cflags, or something else.

I'm exceptionally confused, but if I have zillions of VC project files which assume test is built
with /EHa, then I assume I need the Boost.Test library built with /EHa.

(unless I change them all and/or lose some of Boost.Test functionality - none of which are

I also suspect that I am not alone in this desire.

What I have done (explicit <asynch-exceptions>on) seems to work. So do we need to just update the
docs? But it had better be in VERY BIG LETTERS because it would be a breaking change for very many
users? I'm the only one shouting because I'd had to rebuild after a GIT glitch, but there be many
others to follow?

Has the Boost.Test library actually changed?



Paul A. Bristow
Prizet Farmhouse
Kendal UK LA8 8AB
+44 (0) 1539 561830

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