[Boost-bugs] [Boost C++ Libraries] #2248: BLL constifies return values of operator*

Subject: [Boost-bugs] [Boost C++ Libraries] #2248: BLL constifies return values of operator*
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2008-08-23 15:28:14

#2248: BLL constifies return values of operator*
----------------------------------------------------+-----------------------
 Reporter:  thomas weidner <thomas_weidner_at_[hidden]>  |       Owner:  no-maintainer
     Type:  Bugs                                    |      Status:  new          
Milestone:  Boost 1.37.0                            |   Component:  lambda       
  Version:  Boost 1.36.0                            |    Severity:  Problem      
 Keywords:                                          |  
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 Hi, the problem can quickly described as
 {{{
 ( *_1 = 0 ) ( shared_ptr<int>(new int) );
 // vs
 ( *_1 = 0) ( new int );
 }}}
 only the second line compiles. I tracked down the problem to
 boost/lambda/operator_return_type_traits.hpp:230. The BLL sets the return
 type of (const shared_ptr<int>)::operator*() to be const int& rather than
 int&. This is like turning int * const into int const *. I (and others)
 don't see a reason for this specialization, the code above works with the
 specialization removed.

-- 
Ticket URL: <http://svn.boost.org/trac/boost/ticket/2248>
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