◆ WebKit WeeklyBeta

sosukesuzuki

JSC hardening contributor

377 commits (10mo)
1 security fixes
4 hardening
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Summary

Works almost entirely inside JavaScriptCore, with a recurring secondary presence in YARR and occasional Wasm and libpas touches. The dominant pattern is builtin fast-path work — adding fast paths for `String#substring`, `Array#sort`, and `String#localeCompare` collator caching, then fixing the semantic gaps those paths open up: `JSON.stringify` accepting objects with non-`Object` prototypes, `Array.from` ignoring `Symbol.iterator` overrides, `String#split` atomizing non-atom subjects, and a RegExp trim path that silently disappears once the caller tiers up to DFG/FTL. Systematic-variant candidate: the fast-path-versus-slow-path divergence class here is broad and self-similar, and the YARR side shows the same shape at a lower level (v-mode class set operations producing stale character widths, `optimizeBOL` mishandling lookbehind contents) where a width or anchoring mismatch has more direct memory-safety consequences than a spec deviation.

Components

JSC
90%
JSC Wasm
2%
bmalloc/libpas
2%
WTF
2%
JSC YARR
2%
Platform
1%

Security Fix History

Hardening Commits

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