[Boost-bugs] [Boost C++ Libraries] #5178: boost::exception uses invalid C++ code

Subject: [Boost-bugs] [Boost C++ Libraries] #5178: boost::exception uses invalid C++ code
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-02-11 00:04:49

#5178: boost::exception uses invalid C++ code
-------------------------------------+--------------------------------------
 Reporter:  chrisj                   |       Owner:  emildotchevski
     Type:  Bugs                     |      Status:  new           
Milestone:  To Be Determined         |   Component:  exception     
  Version:  Boost Development Trunk  |    Severity:  Problem       
 Keywords:                           |  
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 boost::exception uses a

 std::map<type_info_, shared_ptr<error_info_base> > in
 error_info_container_impl. This map is copied in clone(). However,
 type_info_ contains a member which is a reference, so it is not copyable.

 The standard says that you can only copy a std::map<T,U> if both T and U
 are copyable. Some standard libraries don't make use of this requirement,
 but libc++ does.

 The easiest fix to this would be to make type_info_ take it's reference
 member instead by pointer, and make it copyable.

 Before I prepare a full patch, I wondered if anyone had any comments, as
 this is a fairly big change to boost::exception

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/5178>
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