From 5719ed38cfe25fc1f38faa635cf5bd782e870214 Mon Sep 17 00:00:00 2001
From: Stefan Pilot <hans.stefan.pilot@googlemail.com>
Date: Tue, 11 Sep 2018 10:18:26 +0200
Subject: [PATCH] Fixes potential NullPointerException in
 ExpressionNode::toString

---
 src/som/interpreter/nodes/ExpressionNode.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/som/interpreter/nodes/ExpressionNode.java b/src/som/interpreter/nodes/ExpressionNode.java
index 2964a6d76..752a303fd 100644
--- a/src/som/interpreter/nodes/ExpressionNode.java
+++ b/src/som/interpreter/nodes/ExpressionNode.java
@@ -160,6 +160,6 @@ public boolean isResultUsed(final ExpressionNode child) {
 
   @Override
   public String toString() {
-    return getClass().getSimpleName() + "(" + sourceSection.toString() + ")";
+    return getClass().getSimpleName() + "(" + String.valueOf(sourceSection) + ")";
   }
 }