No idea, but I do know there was a gcc port to NCR UNIX bootstrapping off their own compiler that stalled for a while until one of the developers worked out tha

No idea, but I do know there was a gcc port to NCR UNIX bootstrapping off their own compiler that stalled for a while until one of the developers worked out that it unrolled switch statements to if+goto ... and used the label 'dflt:' for the default case of the switch. Sucked to be you if you decided to name one of your own labels that.