Bug 95927

The following layout test is crashing on Chromium mac fast/regions/flows-dependency-dynamic-remove.html fast/regions/flows-dependency-same-flow.html Please check http://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=fast%2Fregions%2Fflows-dependency-dynamic-remove.html%20fast%2Fregions%2Fflows-dependency-same-flow.html Probable cause: http://trac.webkit.org/changeset/127596 I can reproduce the crash with NRWT, but couldn't when I use DRT directly. Here is a crash log. It seems there is a condition which cause a stack overflow. Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 DumpRenderTree 0x00640e4b WebCore::RenderBlock::computePreferredLogicalWidths() + 11 1 DumpRenderTree 0x006cb2c2 WebCore::RenderBox::minPreferredLogicalWidth() const + 82 2 DumpRenderTree 0x00870b49 WebCore::RenderRegion::minPreferredLogicalWidth() const + 137 3 DumpRenderTree 0x00642dc1 WebCore::RenderBlock::computeBlockPreferredLogicalWidths() + 1265 4 DumpRenderTree 0x006411d5 WebCore::RenderBlock::computePreferredLogicalWidths() + 917 5 DumpRenderTree 0x006cb2c2 WebCore::RenderBox::minPreferredLogicalWidth() const + 82 6 DumpRenderTree 0x00642dc1 WebCore::RenderBlock::computeBlockPreferredLogicalWidths() + 1265 7 DumpRenderTree 0x006411d5 WebCore::RenderBlock::computePreferredLogicalWidths() + 917 8 DumpRenderTree 0x006cb2c2 WebCore::RenderBox::minPreferredLogicalWidth() const + 82 9 DumpRenderTree 0x00870b49 WebCore::RenderRegion::minPreferredLogicalWidth() const + 137 10 DumpRenderTree 0x00642dc1 WebCore::RenderBlock::computeBlockPreferredLogicalWidths() + 1265 11 DumpRenderTree 0x006411d5 WebCore::RenderBlock::computePreferredLogicalWidths() + 917 12 DumpRenderTree 0x006cb2c2 WebCore::RenderBox::minPreferredLogicalWidth() const + 82 13 DumpRenderTree 0x00642dc1 WebCore::RenderBlock::computeBlockPreferredLogicalWidths() + 1265 14 DumpRenderTree 0x006411d5 WebCore::RenderBlock::computePreferredLogicalWidths() + 917 15 DumpRenderTree 0x006cb2c2 WebCore::RenderBox::minPreferredLogicalWidth() const + 82 16 DumpRenderTree 0x00870b49 WebCore::RenderRegion::minPreferredLogicalWidth() const + 137 17 DumpRenderTree 0x00642dc1 WebCore::RenderBlock::computeBlockPreferredLogicalWidths() + 1265 18 DumpRenderTree 0x006411d5 WebCore::RenderBlock::computePreferredLogicalWidths() + 917 19 DumpRenderTree 0x006cb2c2 WebCore::RenderBox::minPreferredLogicalWidth() const + 82 ....