Hi BOAC,
we are talking datums, sir. If it don't know that, you are 'dead in the water' as they say.
It doesn't need to know the C of G. We need to prove the C of G is within limits for TO & Landing and to estimate the stab trim setting for take off.
When it's airborne, the FMGC will estimate the VLS using config, fuel distribution and previously entered ZFW C of G. However the FAC will display the real VLS using measured Angle of Attack.
Does it extend to knowing that no-one would design a system to shut off the stall warning in flight whilst the a/c is still stalled?
No - it certainly doesn't extend that far and there is no mention in FCOM either. With hindsight, I hope AB change that logic on the stall warning inhibit and include WoW, Radio Alt logic etc. instead.
With "Stall Stall" blaring at them as the Captain entered the Flight Deck at FL 350, I believe we would not be having this dialogue.