[Webkit-unassigned] [Bug 56890] New: It is possible to calculate a NaN value for "value" in ScrollbarThemeMac::paint()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=56890

           Summary: It is possible to calculate a NaN value for "value" in
                    ScrollbarThemeMac::paint()
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: bdakin at apple.com


In ScrollbarThemeMac::paint() the following code can result in value being NaN, which is not great:

else {
    // Within the bounds of the scrollable area.
    value = scrollbar->currentPos() / scrollbar->maximum();
}

Patch forthcoming.

<rdar://problem/9160621>

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