[Boost-bugs] [Boost C++ Libraries] #2481: make_shared and allocate_shared friendship

Subject: [Boost-bugs] [Boost C++ Libraries] #2481: make_shared and allocate_shared friendship
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2008-11-06 18:38:41

#2481: make_shared and allocate_shared friendship
----------------------------------------------------+-----------------------
 Reporter:  Michael Marcin <mike.marcin_at_[hidden]>  |       Owner:  pdimov   
     Type:  Feature Requests                        |      Status:  new      
Milestone:  Boost 1.38.0                            |   Component:  smart_ptr
  Version:  Boost 1.36.0                            |    Severity:  Problem  
 Keywords:                                          |  
----------------------------------------------------+-----------------------
 It is currently vary difficult to have a class with private constructors
 use make_shared and allocate_shared. This same classes are some ideal
 candidates for private constructors because any class that derives from
 enable_shared_from_this should probably have private constructors to
 prevent misuse. Simplifying friend declarations for these functions would
 be very helpful.

 For example:

 {{{
 #!cpp
 class Foo : public enable_shared_from_this<Foo>
 {
   friend class make_shared_access;
   Foo();
 };

 int main()
 {
   shared_ptr<Foo> foo( make_shared<Foo>() );
 }

 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/2481>
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