[Webkit-unassigned] [Bug 151030] ASSERTION FAILED: roundedIntPoint(LayoutPoint(rendererMappedResult)) == result in WebCore::RenderGeometryMap::mapToContainer

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=151030

--- Comment #12 from Jack <shihchieh_lee at apple.com> ---
In some test cases, m_accumulatedOffset is used after subtracting step offset. And if the subtraction happens when it is saturated, the result is a random value (not max int32). Therefore, asserting overflow m_accumulatedOffset would still fail in those cases.

(In reply to Simon Fraser (smfr) from comment #11)
> Can we change the assertion to detect the numeric overflow cases?

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