do
	local list = setmetatable({}, { __mode = "v" })

	local function RunInCoroutine(func)
		local coro, handle = coroutine.create(func), {}
		list[coro] = handle
		coroutine.resume(coro, handle)
	end

	function CoroTest()
		RunInCoroutine(function(handle) print("This one will be collected:", handle) end)
		RunInCoroutine(function(handle) print("This one WON'T be collected:", handle); error(1) end)
		RunInCoroutine(function(handle) print("This one will be collected too:", handle) end)
		
		collectgarbage()
		
		for coro, handle in pairs(list) do print("Still alive:", handle, "Coroutine status:", coroutine.status(coro)) end
	end
end

CoroTest()