[Boost-bugs] [Boost C++ Libraries] #9642: Possible race condition in boost::interprocess::message_queue creation

Subject: [Boost-bugs] [Boost C++ Libraries] #9642: Possible race condition in boost::interprocess::message_queue creation
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-02-07 14:50:29

#9642: Possible race condition in boost::interprocess::message_queue creation
-------------------------------------------------+-------------------------
 Reporter:  namezero@…                           |      Owner:  igaztanaga
     Type:  Bugs                                 |     Status:  new
Milestone:  To Be Determined                     |  Component:
  Version:  Boost 1.54.0                         |  interprocess
 Keywords:  message_queue data race crash        |   Severity:  Problem
  segfault access violation                      |
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 Dear folks,

 I am trying to debug sporadic access violations that occur inside a
 boost::interprocess message queue. (access violation reading an address in
 the shared memory region).

 Environment: boost 1.54, VC++2010. Occurs in both Debug & Release builds.

 It always occurs on or about line 854 (in case of reception) in
 message_queue.hpp: Comments were added by me

       recvd_size     = top_msg.len; // top_msg points to invalid location

 Or line 756 (in case of sending)

 BOOST_ASSERT(free_msg_hdr.priority == 0); // free_msg_hdr points to
 invalid location

 Please see this S/O link for the entire question, plus sample code that
 reproduces the problem for me:

 [http://stackoverflow.com/questions/21628306/boostinterprocess-message-

 queue-race-condition-on-creation]

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Ticket URL: <https://svn.boost.org/trac/boost/ticket/9642>
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