Re: [Boost-bugs] [Boost C++ Libraries] #11897: Compile failure in type_traits_detail::mp_valid_impl with CUDA 7.0

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #11897: Compile failure in type_traits_detail::mp_valid_impl with CUDA 7.0
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2016-01-11 12:38:28

#11897: Compile failure in type_traits_detail::mp_valid_impl with CUDA 7.0
-------------------------------+-------------------------
  Reporter:  a.grund@…         |      Owner:  johnmaddock
      Type:  Bugs              |     Status:  new
 Milestone:  To Be Determined  |  Component:  type_traits
   Version:  Boost 1.60.0      |   Severity:  Showstopper
Resolution:                    |   Keywords:
-------------------------------+-------------------------

Comment (by Alex Grund <a.grund@…>):

 I was proposing to disable this as this is 1 case where variadic templates
 fail in NVCC 7.0 so I would not rely on its correctness and avoid it.

 The proposed patch of yours does not work for 2 reasons:
 1) You forgot one #if on line 89
 2) The symbol is undefined in 7.0 and prior. Due to the check in
 BOOST_WORKAROUND for the existance and !=0 of the symbol it will always
 yield false. I don't see a good way to use that macro here. Using the
 plain defined(...) or ...>=70500 works.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/11897#comment:4>
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