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RE: is this a bug in lua core 5.0b ?

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oh yes, I really think this has something to do with coroutines, because if
I change my entry point to a normal function, the problem disappears:
-- this crashes my app
local entryPoint_threaded = function ( _entity , _date , _delta )
 while true
 do
		-- do some stuff
		...
		-- yield true for normal termination (other yields will
signal AI suspension)
		-- received parameters come from the arguments passed to the
entry point (from C++)
		-- _entity should always remain the same, _date should
always increase, _delta may fluctuate
		_entity , _date , _delta = coroutine . yield ( true )
 end
end
function getEntryPoint ( )
 return coroutine . wrap ( entryPoint_threaded )
end
-- but this does not
local entryPoint = function ( _entity , _date , _delta )
	-- do some stuff
	...
end
function getEntryPoint ( )
	return entryPoint
end

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