Modify pattern matcher to raise an error instead of generating illegal isInstanceOf[Null] and isInstanceOf[Nothing]#23288

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SuperCl4sh wants to merge 2 commits intoscala:mainfrom

SuperCl4sh:fix-pattern

Commits on May 30, 2025

Modify pattern matcher to raise an error instead of generating illegal isInstanceOf[Null] and
SuperCl4sh
committed

Commits on May 31, 2025

Revert previous changes and simplify Nothing | T to T and Null | T to if T is nullable
SuperCl4sh
committed