[webkit-changes] [WebKit/WebKit] a1fc5c: Add bounds checks to FastBitVector

[Chris Dumez]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: a1fc5cb7c15cd65d8c5b784f8f0e6db3fb2df7df
      https://github.com/WebKit/WebKit/commit/a1fc5cb7c15cd65d8c5b784f8f0e6db3fb2df7df
  Author: Chris Dumez <cdumez at apple.com>
  Date:   2024-12-15 (Sun, 15 Dec 2024)

  Changed paths:
    M Source/WTF/wtf/FastBitVector.h

  Log Message:
  -----------
  Add bounds checks to FastBitVector
https://bugs.webkit.org/show_bug.cgi?id=284691

Reviewed by Darin Adler.

Enforce bounds checking in release builds for FastBitVector,
as security hardening.

This tested as performance neutral on Speedometer and JetStream.

* Source/WTF/wtf/FastBitVector.h:
(WTF::FastBitVectorWordView::word const):
(WTF::FastBitVectorWordOwner::word const):
(WTF::FastBitVectorWordOwner::word):
(WTF::FastBitVector::at):

Canonical link: https://commits.webkit.org/287860@main



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