[Boost-bugs] [Boost C++ Libraries] #11985: range: compiler-error sub_range copy-constructor workaround for MSVC

Subject: [Boost-bugs] [Boost C++ Libraries] #11985: range: compiler-error sub_range copy-constructor workaround for MSVC
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2016-02-15 09:32:02

#11985: range: compiler-error sub_range copy-constructor workaround for MSVC
------------------------------+------------------------
 Reporter:  tobias.loew       |      Owner:  neilgroves
     Type:  Bugs              |     Status:  new
Milestone:  To Be Determined  |  Component:  range
  Version:  Boost 1.61.0      |   Severity:  Problem
 Keywords:                    |
------------------------------+------------------------
 Hi,

 the following code generates an error when compiled with MSVC 11 (aka VS
 2012)

     std::vector<int> arr;
     arr.push_back(42);
     boost::sub_range<std::vector<int>> ran = arr;
     boost::sub_range<std::vector<int>> ran_2 = ran;
     const boost::sub_range<std::vector<int>>& ran_ref = ran;
     boost::sub_range<std::vector<int>> ran_3 = ran_ref;


 Error: libs\boost\boost\boost\range\iterator_range_core.hpp(69): error
 C2440: 'static_cast' : cannot convert from
 'std::_Vector_const_iterator<_Myvec>' to 'std::_Vector_iterator<_Myvec>'


 the reason is a
 BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1500) )
 in boost/range/sub_range.hpp at line 183
 if I comment out the workaround everything compiles correct.

 Tobias

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/11985>
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