[Webkit-unassigned] [Bug 274574] New: REGRESSION: (r276031) PremiereMax.com no longer loads properly

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=274574

            Bug ID: 274574
           Summary: REGRESSION: (r276031) PremiereMax.com no longer loads
                    properly
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: msaboff at apple.com

PremiereMax.com no longer loads properly on ToT.  This was bisected to gttps://commits.webkit.org/276031@main.

The change in 276031 at 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.

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