[Webkit-unassigned] [Bug 65637] Crash beneath PlatformCALayerWinInternal::updateTiles when zooming on Google Maps

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Aug 3 13:08:40 PDT 2011


--- Comment #3 from Adam Roben (:aroben) <aroben at apple.com>  2011-08-03 13:08:40 PST ---
Specifically, the overflow happens in a calculation like this:

int numTilesHorizontal = ceil(m_constrainedSize.width / m_tileSize.width);
int numTilesVertical = ceil(m_constrainedSize.height / m_tileSize.height);
int numTilesTotal = numTilesHorizontal * numTilesVertical;

numTilesHorizontal and numTilesVertical are both 65536. The calculation of numTilesTotal results in overflow.

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