I hacked up a cheap version of a warning for defaults in switches that already cover all cases in an enum (the warning is in excess_default.diff - given some discussion with Chandler on IRC I don't think we consider this to be sufficiently high quality to be checked in, but I wouldn't mind some other opinions/thoughts (the issue was that it might need to use the CFG to ensure that it's not reachable via loops nested in the switch or gotos, fallthroughs etc)) and I found/fixed the following cases (excess_default_fixes.diff)
excess_default.diff
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