Looks like others took up the cause later, see https://raw.githubusercontent.com/bjacob/builtin-unreachable-study/master/notes https://raw.githubusercontent.com

Looks like others took up the cause later, see https://raw.githubusercontent.com/bjacob/builtin-unreachable-study/master/notes https://raw.githubusercontent.com/bjacob/builtin-unreachable... and https://groups.google.com/forum/#!topic/mozilla.dev.platform/E0sg9EYk1xU https://groups.google.com/forum/#!topic/mozilla.dev.platform...