[Boost-bugs] [Boost C++ Libraries] #3003: mem_fn does not work with CComPtr<T> in debug mode

Subject: [Boost-bugs] [Boost C++ Libraries] #3003: mem_fn does not work with CComPtr<T> in debug mode
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-05-08 12:01:43

#3003: mem_fn does not work with CComPtr<T> in debug mode
-------------------------------------------------------------+--------------
 Reporter:  Roman Perepelitsa <roman.perepelitsa_at_[hidden]>  |       Owner:  pdimov 
     Type:  Bugs                                             |      Status:  new    
Milestone:  Boost 1.39.0                                     |   Component:  bind   
  Version:  Boost 1.38.0                                     |    Severity:  Problem
 Keywords:                                                   |  
-------------------------------------------------------------+--------------
 Short description: boost::mem_fn does not work with CComPtr<T> in debug
 mode, because it takes the address of CComPtr<T>, which asserts.

 See the thread on boost-users in which the problem was discussed:
 http://groups.google.com/group/boost-

 list/browse_thread/thread/e74efb5329e47e4e/83663a064e8838cc#83663a064e8838cc.

 To reproduce the problem without CComPtr:

 #include <cstdlib>
 #include <boost/bind.hpp>

 struct foo
 {
   void bar() {}
 } f;

 struct ptr
 {
   void* operator&() { std::abort(); }
 };

 foo* get_pointer(const ptr& p) { return &f; }

 int main() {
   boost::bind(&foo::bar, ptr())();
 }

 I attached a diff against trunk that fixes the problem in a backward
 compatible way.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/3003>
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