[Boost-bugs] [Boost C++ Libraries] #8693: gcc -Wcast-qual warning in boost/range/algorithm_ext/push_back.hpp

Subject: [Boost-bugs] [Boost C++ Libraries] #8693: gcc -Wcast-qual warning in boost/range/algorithm_ext/push_back.hpp
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-06-13 16:39:31

#8693: gcc -Wcast-qual warning in boost/range/algorithm_ext/push_back.hpp
------------------------------+------------------------
 Reporter:  ruboam@…          |      Owner:  neilgroves
     Type:  Bugs              |     Status:  new
Milestone:  To Be Determined  |  Component:  range
  Version:  Boost 1.53.0      |   Severity:  Problem
 Keywords:                    |
------------------------------+------------------------
 When trying boost range library with -Wcast-qual and -Werror flags enabled
 the following error comes up
 boost/range/algorithm_ext/push_back.hpp:30:18: error:
      cast from type 'const Range*' to type 'void*' casts away qualifiers
 [-Werror=cast-qual]
      BOOST_ASSERT( (void*)&on != (void*)&from && .....

 &from is a pointer to const object so the C-style cast (void*)&from casts
 away of constness.
 I think this can be fixed by replacing C-style cast by
 const_cast<void*>(static_cast<const void*>(&from)) or by adding GCC
 pragmas to disable -Wcast-qual warning in this header file

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Ticket URL: <https://svn.boost.org/trac/boost/ticket/8693>
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