Re: [boost] [parameter] "Infinite" compile times with EDG based compilers?

From: David Abrahams (dave_at_[hidden])
Date: 2007-06-15 14:08:38

on Fri Jun 15 2007, "John Maddock" <john-AT-johnmaddock.co.uk> wrote:

> David Abrahams wrote:
>>> I have a header that makes use of Boost.Parameter that basically
>>> takes forever to compile with the Intel compiler, and therefore
>>> presumably all EDG based front ends.  MSVC, gcc and even Borland(!)
>>> have no such problems BTW. Is this a known problem or anything that
>>> can be fixed inside Boost.Parameter?  Otherwise I have an
>>> alternative fix I can try - basically not using
>>> BOOST_PARAMETER_FUNCTION - as this is the cause of the problem.
>>
>> A. Can you make a ticket for this and assign it to daniel wallin
>>   (danielw)?
>
> It's here: http://svn.boost.org/trac/boost/ticket/1054 and also
> reported to Intel.  The ticket is assigned to you 'cos danielw doesn't
> exist in the tracker at present?
>
>> B. Can you determine whether it's a preprocessing problem or something
>>   else?
>
> Yep, the problem occurs when:
>
>   typedef typename boost::parameter::binding<
>      args, tag::domain_error_name,
> domain_error<BOOST_MATH_DOMAIN_ERROR_POLICY> >::type
> domain_error_type;
>
> is instantiated, and there are a large number of deduced parameters.

Do you *have* to use binding<>?  There is almost always a better way,
and binding<> is usually more expensive than the alternatives.  Maybe
you could show me the context.

-- 
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com
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