[swift-dev] ExistentialMetatypeType assertion failure on Linux

[Luke Howard]

>> It looks like you're trying to poke at private runtime metadata structures; please don't do that. What are you trying to do?
> 
> Per our exchange yesterday – implement NSStringFromClass() heuristics for NSKeyedArchiver

Sorry I mean NSClassFromString(). I thought indirecting the lookup through the metadata accessor was at least a little bit less bad than accessing it directly. :)

— Luke