id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
9642	Possible race condition in boost::interprocess::message_queue creation	namezero@…	Ion Gaztañaga	"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]
"	Bugs	new	To Be Determined	interprocess	Boost 1.54.0	Problem		message_queue data race crash segfault access violation