id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
13317	io_service behaviour difference between ubuntu and msvc-14	Diego Barrios Romero <eldruin@…>	chris_kohlhoff	"When implementing a basic thread pool using boost::asio::io_service, I am observing some differences in how queued tasks are handled when stopping the io_service.

On MSVC 14 (MS Visual Studio 2015), for some reason the queued tasks which were not started yet are not dropped when stopping the io_service but are run nonetheless.
These tasks are dropped when running this on Ubuntu 16.04 (GCC 5.4.0).

I have simplified and cleaned up the original tests and put them in a single file (attached) which only depends on boost and uses some sleeps to demonstrate the problem.
You can build it with the CMakeLists.txt attached if you wish.

The output on Ubuntu is as expected:
{{{
checkAllWorkIsProcessedBeforeDestruction
	passed.
	passed.
	passed.
checkWorkCanBeCancelled
	passed.
	passed.
	passed.
checkWorkCanBeInterrupted
	passed.
	passed.
	passed.
checkUninterruptableWorkIsNotInterruptedButCanBeDropped
	passed.
	passed.
	passed.
	passed.
}}}

This is the output on MSVC 14:
{{{
checkAllWorkIsProcessedBeforeDestruction
        passed.
        passed.
        passed.
checkWorkCanBeCancelled
        Error: functor 1 call expected: false current: true
        Error: functor 2 call expected: false current: true
        Error: running time expected: 150 current: 402
checkWorkCanBeInterrupted
        passed.
        passed.
        passed.
checkUninterruptableWorkIsNotInterruptedButCanBeDropped
        passed.
        Error: functor 2 call expected: false current: true
        passed.
        Error: running time expected: 250 current: 404
}}}

Am I doing something wrong?"	Bugs	new	To Be Determined	asio	Boost 1.62.0	Problem