Re: [Boost-bugs] [Boost C++ Libraries] #2735: Memory corruption

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #2735: Memory corruption
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-04-09 12:56:21

#2735: Memory corruption
----------------------------------------+-----------------------------------
  Reporter:  Lono <KHaiFeng_at_[hidden]>  |       Owner:  chris_kohlhoff
      Type:  Bugs                       |      Status:  closed        
 Milestone:  To Be Determined           |   Component:  asio          
   Version:  Boost 1.37.0               |    Severity:  Problem       
Resolution:  worksforme                 |    Keywords:                
----------------------------------------+-----------------------------------
Changes (by chris_kohlhoff):

  * status:  new => closed
  * resolution:  => worksforme

Comment:

 Unfortunately your patch is not correct, as you appear to have missed an
 important detail in the MSDN page:

   If *lpOverlapped is not NULL and the function dequeues
   a completion packet for a failed I/O operation from the
   completion port, the return value is zero.

 That is, the fact that overlapped is non-null means that there is an
 OVERLAPPED-derived object that needs to be deleted, it's just that it
 happens to be for a failed operation. That it is deleting an "invalid"
 object makes me suspect that your program (or asio) is deleting the
 OVERLAPPED-derived object too early.

 There isn't enough information here for me to determine if there is a bug
 in asio. Using ConnectNamedPipe with asio appears to work correctly when I
 try it following your instructions. Please reopen this bug if you can
 provide more detailed instructions.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/2735#comment:1>
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