Re: [Boost-bugs] [Boost C++ Libraries] #3950: boost::interprocess::mapped_region destructor deletes shm where it shouldn't.

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #3950: boost::interprocess::mapped_region destructor deletes shm where it shouldn't.
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-05-23 01:30:57

#3950: boost::interprocess::mapped_region destructor deletes shm where it
shouldn't.
-------------------------------------------+--------------------------------
 Reporter:  Lénaïc Huard <lhuard@…>        |       Owner:  igaztanaga  
     Type:  Bugs                           |      Status:  new         
Milestone:  Boost 1.43.0                   |   Component:  interprocess
  Version:  Boost 1.42.0                   |    Severity:  Problem     
 Keywords:                                 |  
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Comment(by kab@…):

 Replying to [comment:5 igaztanaga]:
 > Many thanks, I wouldn't be able to fix it by myself, I thought
 downcasted classes
 > would not break strict aliasing but I was wrong.

 A downward static_cast should be fine, so long as the object is in fact of
 the type being downcasted to. See C++03 5.2.9/5. If gcc strict aliasing
 optimizations are breaking that, that would be very bad.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/3950#comment:7>
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