Re: [Boost-bugs] [Boost C++ Libraries] #4686: MSVC warning C4512 at /W4 (operator= can't be created)

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #4686: MSVC warning C4512 at /W4 (operator= can't be created)
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-09-26 21:18:32

#4686: MSVC warning C4512 at /W4 (operator= can't be created)
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  Reporter:  Stefan van Kessel <van_kessel@…>           |       Owner:  matias                                           
      Type:  Patches                                    |      Status:  new                                              
 Milestone:  To Be Determined                           |   Component:  bimap                                            
   Version:  Boost 1.44.0                               |    Severity:  Cosmetic                                         
Resolution:                                             |    Keywords:  C4512 warning bimap assignment operator operator=
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Comment (by Stefan van Kessel <van_kessel@…>):

 There are template parameters for which the compiler can generate the
 operator= and for which just declaring it will therefore break some of the
 classes. A correct fix that works in all contexts is not as easy as I
 thought. A traits class like is_assignable for the member and base class
 types would be needed to only declare the operator= if either of the
 aforementioned is not assignable.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/4686#comment:1>
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