ASSERTION FAILED: type() == Percent in WebCore::Length::percent

Source/core/rendering/FixedTableLayout.cpp

Index: Source/core/rendering/FixedTableLayout.cpp
diff --git a/Source/core/rendering/FixedTableLayout.cpp b/Source/core/rendering/FixedTableLayout.cpp
index 471e88be718a555d4ce918827aa6a11b53ef38d0..6c81ddbca575515ab0f0774b7290258cc5ae9bf0 100644
--- a/Source/core/rendering/FixedTableLayout.cpp
+++ b/Source/core/rendering/FixedTableLayout.cpp
@@ -138,6 +138,11 @@ int FixedTableLayout::calcWidthArray()
     RenderTableRow* firstRow = section->firstRow();
     for (RenderTableCell* cell = firstRow->firstCell(); cell; cell = cell->nextCell()) {
         Length logicalWidth = cell->styleOrColLogicalWidth();
+
+        // FIXME: calc() on tables should be handled consistently with other lengths. See bug: https://crbug.com/382725
+        if (logicalWidth.isCalculated())
+            logicalWidth = Length(); // Make it Auto
+
         unsigned span = cell->colSpan();
         int fixedBorderBoxLogicalWidth = 0;
         // FIXME: Support other length types. If the width is non-auto, it should probably just use