Created
February 24, 2017 05:44
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False recursion
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| protocol P { | |
| associatedtype PType | |
| } | |
| public protocol Q { | |
| associatedtype QType: R | |
| } | |
| public protocol R { | |
| associatedtype RType | |
| } | |
| func f<T: P>(_: T) where T.PType.RType: Q, T.PType.RType.QType == T.PType {} | |
| // We get this signature: <T where T : P, T.PType : R, T.PType == T.PType.RType.QType, T.PType.RType : Q> | |
| // But we should get this signature: <T where T : P, T.PType == T.PType.RType.QType, T.PType.RType : Q> | |
| // The “T.PType: R” requirement is redundant, but pops up when building the canonical generic environment due to the recursion-breaking code being wrong. |
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