[Type checker] Eliminate redundant "duplicate inheritance" diagnostics. #18700
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The GenericSignatureBuilder and ConformanceLookupTable handle duplication diagnostics for protocols that occur in the inheritance clause. Avoid redundantly diagnosing these within checkInheritanceClause().
…ate. Thanks to @slavapestov for noticing that I hard-coded this, badly.
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@swift-ci please smoke test and merge |
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The
GenericSignatureBuilderandConformanceLookupTablehandle duplicationdiagnostics for protocols that occur in the inheritance clause. Avoid
redundantly diagnosing these within
checkInheritanceClause().