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2 Commits

Author SHA1 Message Date
Doug Gregor
4a358bafb5 [GSB] Merge layout constraints when merging equivalence classes. 
Fixes SR-7168 / rdar://problem/38394648.
 2018-03-16 13:11:49 -07:00
Doug Gregor
ee99c8af99 [Type checker] Validate class constraints for generic arguments of types. 
Class constraints (spelled T: AnyObject) on generic types were not
getting checked on generic arguments. This appears to be a regression
introduced in Swift 4.0 with the removal of AnyObject, leading to a
fairly significant soundness hole that could produce crashers later
on.

Fixes SR-6841 / rdar://problem/36884025.
 2018-01-25 16:34:08 -08:00