Joe Groff 4e9851b032 Don't classify bridging casts as WillSucceed if the object-to-value cast can fail. ...

When casting from an object type to a bridged Swift value type, classifyDynamicCast would use the cast classification for the target type's bridged object type, which would be trivially WillSucceed for thinks like NSNumber-to-Int or NSError-to-SomeError, even though the bridging itself could fail. Fixing this fixes SR-2920|rdar://problem/31404281.

2017-05-12 10:39:39 -07:00

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