[Boost-bugs] [Boost C++ Libraries] #6824: warning: delete called on boost::error_info... that has virtual functions but non-virtual destructor

Subject: [Boost-bugs] [Boost C++ Libraries] #6824: warning: delete called on boost::error_info... that has virtual functions but non-virtual destructor
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-04-23 21:19:52

#6824: warning: delete called on boost::error_info... that has virtual functions
but non-virtual destructor
------------------------------------------------+---------------------------
 Reporter:  Richard Powell <rmpowell77@…>       |       Owner:  anthonyw
     Type:  Bugs                                |      Status:  new     
Milestone:  To Be Determined                    |   Component:  thread  
  Version:  Boost 1.49.0                        |    Severity:  Problem 
 Keywords:                                      |  
------------------------------------------------+---------------------------
 When compiling boost 1.49.0 thread.hpp with clang with -Wall, I receive
 warnings:

 /Users/richardpowell/boost/include/boost/checked_delete.hpp:34:5: warning:
 delete called on
       'boost::error_info<boost::tag_original_exception_type, const
 std::type_info *>' that has virtual functions but non-virtual destructor
       [-Wdelete-non-virtual-dtor]
     delete x;

 =-=-=

 More details:

 $ cat test2.cpp
 #include <boost/thread.hpp>

 $ clang++ --version
 Apple clang version 4.0 (tags/Apple/clang-421.0.11) (based on LLVM 3.1svn)
 Target: x86_64-apple-darwin11.3.0
 Thread model: posix


 $ clang++ -g -I. -Wall -I ~/boost/include   -c test2.cpp
 In file included from test2.cpp:1:
 In file included from
 /Users/richardpowell/boost/include/boost/thread.hpp:13:
 In file included from
 /Users/richardpowell/boost/include/boost/thread/thread.hpp:17:
 In file included from
 /Users/richardpowell/boost/include/boost/thread/pthread/thread_data.hpp:10:
 In file included from
 /Users/richardpowell/boost/include/boost/shared_ptr.hpp:17:
 In file included from
 /Users/richardpowell/boost/include/boost/smart_ptr/shared_ptr.hpp:30:
 /Users/richardpowell/boost/include/boost/checked_delete.hpp:34:5: warning:
 delete called on
       'boost::error_info<boost::tag_original_exception_type, const
 std::type_info *>' that has virtual functions but non-virtual destructor
       [-Wdelete-non-virtual-dtor]
     delete x;
     ^
 /Users/richardpowell/boost/include/boost/smart_ptr/detail/shared_count.hpp:95:13:
 note: in instantiation of function template specialization
 'boost::checked_delete<boost::error_info<boost::tag_original_exception_type,
 const std::type_info *> >' requested here
             boost::checked_delete( p );
             ^
 /Users/richardpowell/boost/include/boost/smart_ptr/shared_ptr.hpp:183:44:
 note: in instantiation of function template specialization
 'boost::detail::shared_count::shared_count<boost::error_info<boost::tag_original_exception_type,
 const std::type_info *> >' requested here
     explicit shared_ptr( Y * p ): px( p ), pn( p ) // Y must be complete
                                            ^
 /Users/richardpowell/boost/include/boost/exception/info.hpp:170:42: note:
 in instantiation of function template specialization
 'boost::shared_ptr<boost::error_info<boost::tag_original_exception_type,
 const std::type_info *>
       >::shared_ptr<boost::error_info<boost::tag_original_exception_type,
 const std::type_info *> >' requested here
             shared_ptr<error_info_tag_t> p( new error_info_tag_t(v) );
                                          ^
 /Users/richardpowell/boost/include/boost/exception/info.hpp:191:16: note:
 in instantiation of function template specialization
       'boost::exception_detail::set_info<boost::unknown_exception,
 boost::tag_original_exception_type, const std::type_info *>' requested
 here
         return exception_detail::set_info(x,v);
                ^
 /Users/richardpowell/boost/include/boost/exception/detail/exception_ptr.hpp:181:21:
 note: in instantiation of function template specialization
       'boost::operator<<<boost::unknown_exception,
 boost::tag_original_exception_type, const std::type_info *>' requested
 here
             (*this) << original_exception_type(&typeid(e));
                     ^
 /Users/richardpowell/boost/include/boost/exception/detail/exception_ptr.hpp:160:13:
 note: in instantiation of function template specialization
       'boost::unknown_exception::add_original_type<std::exception>'
 requested here
             add_original_type(e);
             ^
 1 warning generated.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6824>
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