specializing boost::range_const_iterator has no effect on boost::has_range_iterator

[Tobias Reh <treh@…>]

see the following code:

#include <boost/range/has_range_iterator.hpp>
#include <boost/filesystem.hpp>
#include <boost/filesystem/operations.hpp> // specializes range_const_iterator

using ConstDirIter
  = boost::range_const_iterator<boost::filesystem::directory_iterator>::type; 
// this compiles

static_assert(
  boost::has_range_const_iterator<
    boost::filesystem::directory_iterator
  >::value,
  "This does not compile!!!"
);

See ​https://github.com/boostorg/range/pull/40 for a fix.