Revision r172835 <http://trac.webkit.org/r172835> (Enable SATURATED_LAYOUT_ARITHMETIC) made the layout test fast/block/float/overhanging-tall-block.html fail on platform GTK * Actual result: http://build.webkit.org/results/GTK%20Linux%2064-bit%20Release%20%28Tests%29/r172842%20%282253%29/fast/block/float/overhanging-tall-block-actual.txt * Expected result: http://build.webkit.org/results/GTK%20Linux%2064-bit%20Release%20%28Tests%29/r172842%20%282253%29/fast/block/float/overhanging-tall-block-expected.txt * Pretty diff: http://build.webkit.org/results/GTK%20Linux%2064-bit%20Release%20%28Tests%29/r172842%20%282253%29/fast/block/float/overhanging-tall-block-pretty-diff.html I tried to revert r172835 locally and the test passes... I don't know if the diff is indicative of a bug, or the expected result just needs to be rebaselined. Any opinion?