The Fix of Chart-13 might not be the actual cause of the bug.

[jmueducn]

patch fixed the bug by adding a Math.max function to make sure the Range is not negative.

diff --git a/source/org/jfree/chart/block/BorderArrangement.java b/source/org/jfree/chart/block/BorderArrangement.java
index b3ae54b..730aeb3 100644
--- a/source/org/jfree/chart/block/BorderArrangement.java
+++ b/source/org/jfree/chart/block/BorderArrangement.java
@@ -452,7 +452,7 @@ public class BorderArrangement implements Arrangement, Serializable {
         h[3] = h[2];
         if (this.rightBlock != null) {
             RectangleConstraint c4 = new RectangleConstraint(0.0,
-                    new Range(0.0, Math.max(constraint.getWidth() - w[2], 0.0)),
+                    new Range(0.0, constraint.getWidth() - w[2]),
                     LengthConstraintType.RANGE, h[2], null,
                     LengthConstraintType.FIXED);
             Size2D size = this.rightBlock.arrange(g2, c4);

However, the actual reason of the bug is w[2] > constraint.getWidth(), which should not be the case.

if (this.leftBlock != null) {
            RectangleConstraint c3 = new RectangleConstraint(0.0,
                    new Range(0.0, constraint.getWidth()),
                    LengthConstraintType.RANGE, h[2], null,
                    LengthConstraintType.FIXED);
            Size2D size = this.leftBlock.arrange(g2, c3);
            w[2] = size.width;
        }

It is because the arrange method in some Block class did not handle constraint correctly. In Emptyblock.java:

    public Size2D arrange(Graphics2D g2, RectangleConstraint constraint) {
        return new Size2D(calculateTotalWidth(getWidth()), 
                calculateTotalHeight(getHeight()));
    }

In AbstractBlock.java, it handled it correctly:

public Size2D arrange(Graphics2D g2, RectangleConstraint constraint) {
        Size2D base = new Size2D(getWidth(), getHeight());
        return constraint.calculateConstrainedSize(base);
    }

However, in actual test, the method in emptybock class override it.

[rjust]

Hi @jmueducn,

All patches for the projects in Defects4J are written by the project maintainers themselves. It is possible that some patches do not, or only partially, fix the root cause of a bug. Similarly, a patch may introduce a new bug not caught by the existing test suite at the time.

Defects4J provides curated artifacts that correspond to a projects development history. Defects4J does not attempt to provide ground truth patches, which is infeasible without knowing what the precise specification was at the time (the specification may have evolved), what the developer's intent was at the time, etc. Similarly, there are many potential patches and identifying a "correct patch" requires deep knowledge about the project's code base.

Can you please clarify whether you are proposing to change the patches in Defects4J, just comment on the fact that this patch may be insufficient for the underlying bug, or something else?

Best, René