id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
5166	interprocess::message_queue does not work between 64 bits and 32 bits processes	dmashkov@…	Ion Gaztañaga	"The boost::interprocess::message_queue class does not work between 64 and 32 bits processes on Windows (I am using Wndows 2008r2 x64).

I found that problem in mq_hdr_t class. Members of this class has std::size_t type. But size of std::size_t is different in 64 and 32 bit versions. At current moment first code string of method message_queue::do_receive(...) do this:


detail::mq_hdr_t *p_hdr = static_cast<detail::mq_hdr_t*>(m_shmem.get_user_address());


That is realization assigned a binary chunk from a shared memory to the pointer, not taking into account the fact that a 32 bit process size_t was 2 times smaller than 64 bit process. As a result, the data are shifted and the assigned are incorrectly.

I do not know this bug or some sort of ""feature""... - I could not find any restrictions on use of message_queue class in documentation."	Bugs	closed	To Be Determined	interprocess	Boost 1.45.0	Showstopper	wontfix	message_queue 64 bits 32 bits