Earlier today I committed the first set of changes to CFString. It now uses libicu instead of NSString. This will allow a lot of extra functionality to work, include any of the functions that use CFLocale. Anyway, that's just the background.
In order to make this work, I moved __CFStringMakeConstantString() to CFString.c and changed it to use CFDictionary instead of NSSet (CFSet doesn't yet exist). When I did that, I started getting an exception whenever trying to add anything to the dictionary (CFString.c:1173). It took me a while to figure it out, and it is due to GSDictionary setting GSI_MAP_RETAIN_KEY() being set to call -copyWithZone:. For some reason, whenever that happens I get a NSCFType does not recognize -copyWithZone: exception. I don't understand enough about how GSDictionary works, so I was wondering if anyone could help me out here? Really, I don't even understand why -copyWithZone: is being called since I just need to object retained, not copied. Thanks
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