[Webkit-unassigned] [Bug 111663] New: Make RuleData support up to 8192 selectors

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=111663

           Summary: Make RuleData support up to 8192 selectors
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Android
        OS/Version: Android
            Status: UNCONFIRMED
          Severity: Blocker
          Priority: P1
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: pliard at chromium.org


r125294 made RuleData consume less memory by replacing a pointer with an index encoded on 12 bits.

This unfortunately breaks Chrome for Android when it is used with Adblock plus which injects a lot of CSS. This leads to blank pages on page load and is caused by an integer overflow when |m_selectorIndex| (encoded on 12 bits) is set.

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