id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
10651	boost::thread leaks memory when using the MinGW compiler	michael.burr@…	Niall Douglas	"boost::thread leaks memory when using the MinGW compiler

This report is based on information originally from:

    [hxxp://stackoverflow.com/questions/26284056/threads-hogging-up-memory]
    
When the following program is compiled with MinGW, the memory use of the process continually increases:

{{{
#include <boost/thread.hpp>

void thread_func()
{
    return;
}

int main()
{
    for (;;) {
        boost::thread t1(thread_func);
        boost::thread t2(thread_func);

        t1.join();
        t2.join();
    }
}

}}}

Any one of the following changes to the program seem to make the memory leak go away:

  - add a call to the Windows API `Sleep(1)` to `thread_func()`
  - use only a single thread
  - move the call to `t1.join()` to before the creation of `t2`

I'm not sure if this problem is sensitive to the version of MinGW.  I used MinGW 4.8.1 from tdm-gcc:

    [hxxp://tdm-gcc.tdragon.net/]

I built a 32-bit program; I'm not sure if a 64-bit program would behave differently.

The problem doesn't occur when MSVC 12 (Visual Studio 2013) is used."	Support Requests	closed	To Be Determined	thread	Boost 1.56.0	Problem	wontfix