id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
5150	boost::thread does not print or return the error value when creating a thread fails.	jukka.jylanki@…	Anthony Williams	"I'm running on Win7 64bit Professional, and building 32-bit code on MSVC2008.

For some reason, I'm getting boost::thread_resource_error from void thread::start_thread() in http://svn.boost.org/svn/boost/trunk/libs/thread/src/win32/thread.cpp , but I'm unable to debug this issue, since the boost sources don't check for the error value of when this call fails.

http://msdn.microsoft.com/en-us/library/kdzttdcb(v=vs.80).aspx specifies that  _beginthreadex returns 0 on an error, in which case errno and _doserrno are set.

Expected: The value of errno is caught in the code and passed in the exception so that the client can debug the reason of the failure.

(The following background for some context, although it's such a voodoo situation I can not report that as a bug directly, better start with the above first)

My code that uses boost threads worked ok previously, and curiously it was that incorporating the use of QScriptEngineDebugger from Qt 4.6 into my application started exhibiting this problem. If I remove the use of QScriptEngineDebugger, the thread is created fine. I am using less than 100MB of memory, and my application is running about 15 threads, so it shouldn't be a system resource consumption issue.
"	Feature Requests	closed		thread	Boost 1.45.0	Not Applicable	duplicate