Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 116394de195ba16045408b3d0548743026aa8846
      
https://github.com/WebKit/WebKit/commit/116394de195ba16045408b3d0548743026aa8846
  Author: Kai Tamkun <[email protected]>
  Date:   2026-06-15 (Mon, 15 Jun 2026)

  Changed paths:
    A JSTests/stress/regexp-boundary-assertion-with-surrogate.js
    M Source/JavaScriptCore/yarr/YarrJIT.cpp

  Log Message:
  -----------
  [JSC] Yarr JIT \B+unicode+surrogate produces corrupted JSString, crashes 
WebContent
https://bugs.webkit.org/show_bug.cgi?id=312604
rdar://173555471

Reviewed by Yusuke Suzuki.

Prevents corruption of firstCharacterAdditionalReadSize by disabling the
use-first-non-BMP-character optimization in word boundary assertions.

Test: JSTests/stress/regexp-boundary-assertion-with-surrogate.js

* JSTests/stress/regexp-boundary-assertion-with-surrogate.js: Added.
* Source/JavaScriptCore/yarr/YarrJIT.cpp:

Canonical link: https://commits.webkit.org/315250@main



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