Add second position: absolute pass

src/Layout.js

@@ -269,6 +269,26 @@ var computeLayout = (function() {
           // You never want to go smaller than padding
           getPaddingAndBorderAxis(child, crossAxis)
         );
+      } else if (getPositionType(child) == CSS_POSITION_ABSOLUTE) {
+        // Pre-fill dimensions when using absolute position and both offsets for the axis are defined (either both
+        // left and right or top and bottom).
+        for (var/*int*/ ii = 0; ii < 2; ii++) {
+          var/*css_flex_direction_t*/ axis = ii ? CSS_FLEX_DIRECTION_ROW : CSS_FLEX_DIRECTION_COLUMN;
+          if (!isUndefined(node.layout[dim[axis]]) &&
+              !isDimDefined(child, axis) &&
+              isPosDefined(child, leading[axis]) &&
+              isPosDefined(child, trailing[axis])) {
+            child.layout[dim[axis]] = fmaxf(
+              node.layout[dim[axis]] -
+              getPaddingAndBorderAxis(node, axis) -
+              getMarginAxis(child, axis) -
+              getPosition(child, leading[axis]) -
+              getPosition(child, trailing[axis]),
+              // You never want to go smaller than padding
+              getPaddingAndBorderAxis(child, axis)
+            );
+          }
+        }
       }
     }