# HG changeset patch
# User Michael Van De Vanter  <michael.van.de.vanter@oracle.com>
# Date 1432784949 25200
# Node ID d6d7e51d9206ea3d429b7c6488ead80ca2e46f19
# Parent  189d7a64b4d917234eec57984becf77dd1fae9aa
Truffle/instrumentation:  catch a NPE error condition (when a tagged STATEMENT has no source information)

diff -r 189d7a64b4d9 -r d6d7e51d9206 graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/DefaultVisualizer.java
--- a/graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/DefaultVisualizer.java	Wed May 27 16:36:03 2015 -0700
+++ b/graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/DefaultVisualizer.java	Wed May 27 20:49:09 2015 -0700
@@ -52,6 +52,9 @@
             section = node.getEncapsulatingSourceSection();
             estimated = true;
         }
+        if (section == null) {
+            return "<error: source location>";
+        }
         return section.getShortDescription() + (estimated ? "~" : "");
     }