I found a memory leak in boost's thread class. Here is the sample program:

void func()
{
}

int _tmain(int argc, _TCHAR* argv[])
{
_CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_DEBUG);
_CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_DEBUG);
_CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_DEBUG);

{
thread t(func);
t.join();
}

_CrtDumpMemoryLeaks();

return 0;
}

The output is:

The thread 'Win32 Thread' (0xb24) has exited with code 0 (0x0).
Detected memory leaks!
Dumping objects ->
{188} normal block at 0x003A9DA8, 24 bytes long.
Data: < - > D0 2D 15 00 FF FF FF FF 00 00 00 00 00 00 00 00
{187} normal block at 0x003A9C78, 8 bytes long.
Data: < : > A8 9D 3A 00 01 CD CD CD
Object dump complete.

So I think boost should resolve this problem in the next version.