[Boost-bugs] [Boost C++ Libraries] #4797: Member hooks do not work with base classes

Subject: [Boost-bugs] [Boost C++ Libraries] #4797: Member hooks do not work with base classes
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-10-27 13:32:26

#4797: Member hooks do not work with base classes
------------------------------+---------------------------------------------
 Reporter:  mgaunard          |       Owner:  igaztanaga
     Type:  Feature Requests  |      Status:  new       
Milestone:  To Be Determined  |   Component:  intrusive 
  Version:  Boost 1.44.0      |    Severity:  Problem   
 Keywords:                    |  
------------------------------+---------------------------------------------
 It is not possible to do the following:

 {{{
 struct A
 {
     list_member_hook<> hook;
 };

 struct B : A
 {
 };

 typedef list<B, member_hook<A, list_member_hook<>, &A::hook> > mylist;
 }}}

 (Note &B::hook has type list_member_hook<> A::*, so putting B as the first
 parameter to member_hook doesn't work.)

 This results in a static assert that A and B are not the same type.

 The best way to fix this might be to add a base_member_hook<B, A,
 &A::hook> helper.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/4797>
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