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由 Neal Gafter 提交于
The subsumption tree must treat an unconstrained type parameter as possibly null. Also, if a previous case pattern handles all non-null input, any further case type pattern is subsumed. Fixes #16688 Fixes #16671
c069b891
The subsumption tree must treat an unconstrained type parameter as possibly null. Also, if a previous case pattern handles all non-null input, any further case type pattern is subsumed. Fixes #16688 Fixes #16671