diff -r f91144b7da75 -r af8417e590f4 src/share/classes/com/sun/tools/javac/main/JavaCompiler.java
--- a/src/share/classes/com/sun/tools/javac/main/JavaCompiler.java	Mon Feb 04 18:08:53 2013 -0500
+++ b/src/share/classes/com/sun/tools/javac/main/JavaCompiler.java	Sun Feb 17 16:44:55 2013 -0500
@@ -629,6 +629,8 @@
             if (!taskListener.isEmpty()) {
                 TaskEvent e = new TaskEvent(TaskEvent.Kind.PARSE, filename);
                 taskListener.started(e);
+                keepComments = true;
+                genEndPos = true;
             }
             Parser parser = parserFactory.newParser(content, keepComments(), genEndPos, lineDebugInfo);
             tree = parser.parseCompilationUnit();