diff -r 5c0b3faeb0b0 -r 067f51db3402 src/share/classes/com/sun/tools/javac/tree/TreeInfo.java
--- a/src/share/classes/com/sun/tools/javac/tree/TreeInfo.java	Wed Jun 20 13:23:26 2012 -0700
+++ b/src/share/classes/com/sun/tools/javac/tree/TreeInfo.java	Thu Jun 21 13:22:21 2012 -0700
@@ -285,7 +285,7 @@
         DocCommentTable docComments = (tree.hasTag(JCTree.Tag.TOPLEVEL))
                 ? ((JCCompilationUnit) tree).docComments
                 : env.toplevel.docComments;
-        return docComments.getCommentText(tree);
+        return (docComments == null) ? null : docComments.getCommentText(tree);
     }
 
     /** The position of the first statement in a block, or the position of