Bug 274574 - REGRESSION: (r276031) PremiereMax.com no longer loads properly
Summary: REGRESSION: (r276031) PremiereMax.com no longer loads properly
Status: RESOLVED FIXED
Alias: None
Product: WebKit
Classification: Unclassified
Component: JavaScriptCore (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Michael Saboff
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2024-05-22 22:46 PDT by Michael Saboff
Modified: 2024-05-23 09:50 PDT (History)
1 user (show)

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Description Michael Saboff 2024-05-22 22:46:41 PDT 
PremiereMax.com no longer loads properly on ToT.  This was bisected to gttps://commits.webkit.org/276031@main.

The change in 276031@main introduced an optimization where reading a non-BMP character that failed to match would allow advancing the character pointer two characters instead of one.  That optimization has a bug that causes the problem here.  Removing the optimization fixes the issue.
Comment 1 Michael Saboff 2024-05-22 22:47:07 PDT 
<rdar://128338255>
Comment 2 Michael Saboff 2024-05-22 22:56:13 PDT 
Pull request: https://github.com/WebKit/WebKit/pull/28973
Comment 3 EWS 2024-05-23 09:50:14 PDT 
Committed 279209@main (a8e4fcd2924b): <https://commits.webkit.org/279209@main>

Reviewed commits have been landed. Closing PR #28973 and removing active labels.