jtreg -xml generates invalid XML

Alan Bateman Alan.Bateman at oracle.com
Tue Jun 25 13:47:46 PDT 2013

I tried to use jtreg -xml:verify recently but I found that a number of 
jdk tests emit control characters in their output which results in 
illegal characters in the XML output.

I worked around it with the attached patch (which just drops the control 
characters except for 0x9, 0xA and 0xD). I bring it out as it may be 
something to look into more as there are other restricted characters and 
maybe they should be mapped to something rather than dropped.


diff --git a/src/share/classes/com/sun/javatest/regtest/XMLWriter.java 
--- a/src/share/classes/com/sun/javatest/regtest/XMLWriter.java
+++ b/src/share/classes/com/sun/javatest/regtest/XMLWriter.java
@@ -417,6 +417,7 @@
      private static final Pattern XML_AMP = Pattern.compile("&");
      private static final Pattern XML_QUOTE = Pattern.compile("\"");
      private static final Pattern XML_APOS = Pattern.compile("\'");
+    private static final Pattern XML_ILLEGAL = 

      // sanitize the string for xml presentation
      public void sanitize(String in) {
@@ -429,6 +430,7 @@
              in = XML_LT.matcher(in).replaceAll("<");
              in = XML_QUOTE.matcher(in).replaceAll(""");
              in = XML_APOS.matcher(in).replaceAll("'");
+            in = XML_ILLEGAL.matcher(in).replaceAll("");

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