Fix ordering in default interface method lookup #67379
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The previous implementation would find a default implementation in the current type before looking for non-default implementation in the base. Default implementations should be looked at last. In fact the default implementation in the current type is unreachable if there's a non-default implementation in the base type - the compiler shouldn't even have bothered to emit it into the dispatch map. That can be a separate fix - this fix is still logically correct and necessary to get variant dispatch corner cases correctly.
ghost
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jkotas
approved these changes
Mar 31, 2022
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The previous implementation would find a default implementation in the current type before looking for non-default implementation in the base. Default implementations should be looked at last.
In fact the default implementation in the current type is unreachable if there's a non-default implementation in the base type - the compiler shouldn't even have bothered to emit it into the dispatch map. That can be a separate fix - this fix is still logically correct and necessary to get variant dispatch corner cases correctly.