http://git-wip-us.apache.org/repos/asf/jena/blob/d1c3b58d/jena-arq/src/main/java/com/hp/hpl/jena/sparql/lang/sparql_11/TokenMgrError.java
----------------------------------------------------------------------
diff --git
a/jena-arq/src/main/java/com/hp/hpl/jena/sparql/lang/sparql_11/TokenMgrError.java
b/jena-arq/src/main/java/com/hp/hpl/jena/sparql/lang/sparql_11/TokenMgrError.java
index f0dbf93..3f28793 100644
---
a/jena-arq/src/main/java/com/hp/hpl/jena/sparql/lang/sparql_11/TokenMgrError.java
+++
b/jena-arq/src/main/java/com/hp/hpl/jena/sparql/lang/sparql_11/TokenMgrError.java
@@ -65,7 +65,7 @@ public class TokenMgrError extends Error
* equivalents in the given string
*/
protected static final String addEscapes(String str) {
- StringBuilder retval = new StringBuilder();
+ StringBuffer retval = new StringBuffer();
char ch;
for (int i = 0; i < str.length(); i++) {
switch (str.charAt(i))