[Boost-bugs] [Boost C++ Libraries] #6208: try_lock_wrapper swap compiler error on clang 3.0 c++11

Subject: [Boost-bugs] [Boost C++ Libraries] #6208: try_lock_wrapper swap compiler error on clang 3.0 c++11
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-12-04 14:52:13

#6208: try_lock_wrapper swap compiler error on clang 3.0 c++11
--------------------------+-------------------------------------------------
 Reporter:  viboes        |       Owner:  viboes 
     Type:  Bugs          |      Status:  new    
Milestone:  Boost 1.49.0  |   Component:  thread 
  Version:  Boost 1.48.0  |    Severity:  Problem
 Keywords:                |  
--------------------------+-------------------------------------------------
 While runing the regression test on clang-3.0/2.9 c++11 the following
 compile error appears

 {{{
 clang-darwin.compile.c++
 ../../../bin.v2/libs/thread/test/test_lock_concept.test/clang-
 darwin-2.9x/debug/threading-multi/test_lock_concept.o
 In file included from test_lock_concept.cpp:8:
 In file included from ../../../boost/thread/mutex.hpp:16:
 In file included from ../../../boost/thread/pthread/mutex.hpp:12:
 ../../../boost/thread/locks.hpp:991:15: error: base class
 'unique_lock<boost::mutex>' has private copy constructor
         class try_lock_wrapper:
               ^
 In file included from test_lock_concept.cpp:6:
 In file included from ../../../boost/test/unit_test.hpp:20:
 In file included from ../../../boost/test/unit_test_suite.hpp:21:
 In file included from ../../../boost/test/tree/test_case_template.hpp:31:
 In file included from ../../../boost/mpl/for_each.hpp:28:
 In file included from ../../../boost/utility/value_init.hpp:30:
 In file included from ../../../boost/swap.hpp:10:
 ../../../boost/utility/swap.hpp:33:5: note: in instantiation of function
 template specialization
 'std::swap<boost::detail::try_lock_wrapper<boost::mutex> >' requested here
     swap(left,right);
     ^
 ../../../boost/utility/swap.hpp:51:5: note: in instantiation of function
 template specialization
 'boost_swap_impl::swap_impl<boost::detail::try_lock_wrapper<boost::mutex>
 >' requested here
     ::boost_swap_impl::swap_impl(left, right);
     ^
 test_lock_concept.cpp:394:9: note: in instantiation of function template
 specialization 'boost::swap<boost::detail::try_lock_wrapper<boost::mutex>,
 boost::detail::try_lock_wrapper<boost::mutex> >' requested here
         swap(l1,l2);
         ^
 test_lock_concept.cpp:453:5: note: in instantiation of member function
 'test_locks_can_be_swapped<boost::mutex,
 boost::detail::try_lock_wrapper<boost::mutex> >::operator()' requested
 here
     test_locks_can_be_swapped<Mutex,Lock>()();


 }}}

 This is a similar problem to the one in #6207. The solution is
 {{{


 #ifndef BOOST_NO_RVALUE_REFERENCES
         template<typename Mutex>
         void swap(try_lock_wrapper<Mutex>&& lhs,try_lock_wrapper<Mutex>&&
 rhs)
         {
             lhs.swap(rhs);
         }
         template<typename Mutex>
         void swap(try_lock_wrapper<Mutex>& lhs,try_lock_wrapper<Mutex>&
 rhs)
         {
             lhs.swap(rhs);
         }
 #else
         template<typename Mutex>
         void swap(try_lock_wrapper<Mutex>& lhs,try_lock_wrapper<Mutex>&
 rhs)
         {
             lhs.swap(rhs);
         }
 #endif
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6208>
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