Re: [boost] enabling constexpr with Visual studio 2015 Update 3 (RC)

Subject: Re: [boost] enabling constexpr with Visual studio 2015 Update 3 (RC)
From: Paul A. Bristow (pbristow_at_[hidden])
Date: 2016-06-13 09:54:30

> -----Original Message-----
> From: Boost [mailto:boost-bounces_at_[hidden]] On Behalf Of Marcel Raad
> Sent: 11 June 2016 16:27
> To: boost_at_[hidden]
> Subject: Re: [boost] enabling constexpr with Visual studio 2015 Update 3 (RC)
> 
> pabristow wrote
> > (aside I also tried /std:C++latest but that works for some tasks but
> > failed to compile with odd-looking errors in converter.hpp
> >
> > Error	C2518	keyword 'typename' illegal in base class list; ignored
> > \modular-boost\boost\numeric\conversion\detail\converter.hpp	453
> >
> > // Trivial Converter : used when (cv-unqualified) T == (cv-unqualified)  S
> >   //
> >   template
> > <class Traits>
> >   struct trivial_converter_impl : public std::unary_function<
> > BOOST_DEDUCED_TYPENAME Traits::argument_type
> >
> > ,BOOST_DEDUCED_TYPENAME Traits::result_type
> >                                                             >
> >                                  ,public dummy_range_checker
> > <Traits>
> >   {...}
> >
> > So I stopped trying that /std:c++latest option.  What else should it do?)
> 
> To use /std:C++latest, you have to add _HAS_AUTO_PTR_ETC=1 to the
> preprocessor definitions. Otherwise, there is no std::unary_function.

#define _HAS_AUTO_PTR_ETC 1
// http://lists.boost.org/boost-users/2015/09/84966.php

seems to get rid of my compile failure.

Thanks  Paul

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