Shot clock violation

[leafsfan1967]

Say it's the dying seconds of a game and a player shoots and air balls and there is a shot clock violation. Does the game clock stop as soon as the shot clock goes to 0? Or do the refs have to wait to blow their whistle until it is determined the shot does not hit the rim, even if that occurs a second or so after the shot clock hits 0? I imagine if a player threw up the shot with 0.3 on the shot clock, there would more than 0.3 seconds pass before you can determine shot was missed so wondering when the game clock would stop.