[boost] [base_from_member][sun-next_cpp11] problem with variadics at base_from_member

Subject: [boost] [base_from_member][sun-next_cpp11] problem with variadics at base_from_member
From: Joaquín M LópezMuñoz (joaquin_at_[hidden])
Date: 2015-11-01 07:29:28

Hi,

In 2012, boost::base_from_member was equipped with variadics machinery
to perfect-forward construction arguments to the contained member.
Unfortunately, Solaris Studio 12.5 on Intel chokes on it
(http://tinyurl.com/no7trgb ):

"../boost/utility/base_from_member.hpp", line 137:
 Error: Parameter pack 'x' not expanded with '...' [...]

Oddly enough, the same compiler does work fine on Sparc.
May I suggest that lines 129-132 of boost/utility/base_from_member.hpp

#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && \
    !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && \
    !defined(BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS) && \
    !(defined(__GNUC__) && (__GNUC__ == 4) && (__GNUC_MINOR__ < 4))

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