[MoveOnly] Call borrowing methods on existentials. #73857
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It's a pass-through for FSPL's purposes.
Bail on non-consuming existential values which are move-only. Existential specialization requires creating a copy in such cases and that's illegal for move-only values.
rdar://125864434
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@swift-ci please test |
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Teach FSPL to look through
open_existential_addrand teach theExistentialSpecializernot to specialize non-copyable existentials which aren't consumed (doing so would require a copy, which is illegal).Not fixed here:
-gis passedrdar://125864434