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| -rw-r--r-- | NEWS.md | 5 |
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@@ -122,6 +122,11 @@ See GitHub releases like [GitHub Releases of Logger](https://github.com/ruby/log a warning on verbose mode (`-w`). [[Feature #15554]] +* Redefining some core methods that are specially optimized by the interpeter + and JIT like `String.freeze` or `Integer#+` now emits a performance class + warning (`-W:performance` or `Warning[:performance] = true`). + [[Feature #20429]] + [Feature #13557]: https://bugs.ruby-lang.org/issues/13557 [Feature #15554]: https://bugs.ruby-lang.org/issues/15554 [Feature #16495]: https://bugs.ruby-lang.org/issues/16495 |