[Webkit-unassigned] [Bug 134940] New: Large height/width for body causes page rendering to fail

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=134940

           Summary: Large height/width for body causes page rendering to
                    fail
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: bjonesbe at adobe.com
                CC: zalan at apple.com


Created an attachment (id=234949)
 --> (https://bugs.webkit.org/attachment.cgi?id=234949&action=review)
testcase

The attached test case doesn't render in WebKit Nightly, but it renders fine in Safari 7.0.5.

In a local build, it triggers signed integer overflow with many LayoutUnit operations, and there are places where the computed "bottom" coordinate is negative. If I do a build with saturated layout arithmetic enabled, then these LayoutUnit operations no longer cause integer overflows, but it still doesn't render. I haven't been able to determine where the core issue is.

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