Re: [Boost-bugs] [Boost C++ Libraries] #2951: Unwanted implicit conversion from std::auto_ptr to boost:; shared_ptr

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #2951: Unwanted implicit conversion from std::auto_ptr to boost:; shared_ptr
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-04-17 17:15:55

#2951: Unwanted implicit conversion from std::auto_ptr to boost:;shared_ptr
-------------------------------------------------+--------------------------
  Reporter:  William Tanenbaum <wmtan_at_[hidden]>  |       Owner:  pdimov                            
      Type:  Bugs                                |      Status:  new                               
 Milestone:  Boost 1.39.0                        |   Component:  smart_ptr                         
   Version:  Boost 1.38.0                        |    Severity:  Regression                        
Resolution:                                      |    Keywords:  implicit conversion shared pointer
-------------------------------------------------+--------------------------

Comment(by wmtan_at_[hidden]):

 //The following code compiles and runs.
 An auto_ptr lvalue is implicitly converted to a shared_ptr.
 This should not happen.  This happens in gcc4.3 and gcc3.4,
 with no compiler options other than -I to include the boost header.

  #include <memory>

  #include <iostream>

  #include "boost/shared_ptr.hpp"

  struct X {
         int i;
  };

  void
  f(boost::shared_ptr<X> sp) {
         std::cout << sp->i << std::endl;
  }

  int
  main() {
         std::auto_ptr<X> ap(new X);
         ap->i = 1;
         f(ap);
  }
 ~

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/2951#comment:3>
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