[boost] [Range] 1.68 master/beta MSVC compilation error with /fpermissive-

Subject: [boost] [Range] 1.68 master/beta MSVC compilation error with /fpermissive-
From: Vinnie Falco (vinnie.falco_at_[hidden])
Date: 2018-07-11 14:13:45

When compiling using /fpermissive- (enable strict conformance) I get
the following compilation error:

boost\boost\range\concepts.hpp(257): error C3646: 'n': unknown
override specifier
boost\boost\range\concepts.hpp(264): note: see reference to class
template instantiation
'boost::range_detail::RandomAccessIteratorConcept<Iterator>' being
compiled
boost\libs\beast\include\boost\beast\core\string.hpp(87): note: see
reference to class template instantiation
'boost::basic_string_view<char,std::char_traits<char>>' being compiled
boost\boost\range\concepts.hpp(257): error C4430: missing type
specifier - int assumed. Note: C++ does not support default-int
boost\boost\range\concepts.hpp(257): error C3646: 'n': unknown
override specifier
boost\boost\range\concepts.hpp(264): note: see reference to class
template instantiation
'boost::range_detail::RandomAccessIteratorConcept<Iterator>' being
compiled

I'm using the tip of master, digest 000bd8507f8a17ada2c1fef19158e16cdeabd631

Thanks