[6.2] Infer nonisolated conformances from witnesses #81344
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…d witnesses If all of the witnesses to a conformance are nonisolated, then infer that conformance as nonisolated rather than global-actor-isolated. This is only relevant when InferIsolatedConformances is enabled, and prevents that inference to help maintain source compatibility.
This request was looking through to the root conformance, which could mess with the caching bits. Sink the "is nonisolated conformance" bit down into ProtocolConformance, and have the request for a non-root conformance be defined in terms of the request for the root conformance.
This assertion will trigger whenever there is a cycle with a split-cached request. Remove the assertion.
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@swift-ci please test |
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InferIsolatedConformancesis enabled, and prevents that inference to help maintain source compatibility.InferIsolatedConformanceor when defaulting to the main actor.