[Diagnostics] Fix a few issues with existential type mismatches #84715
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… conformance failures Matching existential types could introduce `InstanceType` element at the end of the locator path, it's okay to look through them to diagnose the underlying issue.
…existential one Resolves: rdar://159401910
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hamishknight
approved these changes
Oct 6, 2025
…gnose mismatched existential conversion
hamishknight
approved these changes
Oct 6, 2025
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@swift-ci please smoke test |
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Look through
InstanceTypewhile attempting to diagnose conformance failuresMatching existential types could introduce
InstanceTypeelementat the end of the locator path, it's okay to look through them to
diagnose the underlying issue.
Diagnose an attempt to match non-existential type to an existential one
Resolves: #83991
Resolves: rdar://159401910