[Boost-bugs] [Boost C++ Libraries] #3937: equal_pointees and invalid pointers

Subject: [Boost-bugs] [Boost C++ Libraries] #3937: equal_pointees and invalid pointers
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-02-16 16:36:59

#3937: equal_pointees and invalid pointers
------------------------------+---------------------------------------------
 Reporter:  NN                |       Owner:  no-maintainer
     Type:  Feature Requests  |      Status:  new          
Milestone:  Boost 1.43.0      |   Component:  utility      
  Version:  Boost 1.42.0      |    Severity:  Optimization 
 Keywords:                    |  
------------------------------+---------------------------------------------
 In file boost/utility/compare_pointees.hpp function equal_pointees treat
 invalid pointers as a positive value.

 There should be added another function which treats invalid pointers as a
 negative value.

 {{{
 #!cpp

 template<class OptionalPointee>
 inline
 bool equal_pointees ( OptionalPointee const& x, OptionalPointee const& y )
 {
   return (!x) != (!y) ? false : ( !x ? true : (*x) == (*y) ) ;
 }

 template<class OptionalPointee>
 inline
 bool equal_pointees_false ( OptionalPointee const& x, OptionalPointee
 const& y )
 {
   return (!x) != (!y) ? false : ( !x ? false : (*x) == (*y) ) ;
 }
 }}}

 Thanx.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/3937>
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