diff -r 000000000000 -r 9a66ca7c79fa test/tools/javac/api/T6392782.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/api/T6392782.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,100 @@
+/*
+ * Copyright 2006 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug 6392782
+ * @summary TreeScanner.visitImport returns null, not result of nested scan
+ */
+
+import java.io.*;
+import java.util.*;
+import javax.tools.*;
+import com.sun.source.tree.*;
+import com.sun.source.util.*;
+import com.sun.tools.javac.api.*;
+
+public class T6392782 {
+    public static void main(String... args) throws IOException {
+        String testSrc = System.getProperty("test.src", ".");
+        JavacTool tool = JavacTool.create();
+        StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null);
+        Iterable<? extends JavaFileObject> files =
+            fm.getJavaFileObjectsFromFiles(Arrays.asList(new File(testSrc, T6392782.class.getName()+".java")));
+        JavacTask task = tool.getTask(null, fm, null, null, null, files);
+        Iterable<? extends Tree> trees = task.parse();
+        TreeScanner<Integer,Void> scanner = new MyScanner();
+        check(scanner, 6, scanner.scan(trees, null));
+
+        CountNodes nodeCounter = new CountNodes();
+        // 383 nodes with the regular parser; 384 nodes with EndPosParser
+        // We automatically swith to EndPosParser when calling JavacTask.parse()
+        check(nodeCounter, 384, nodeCounter.scan(trees, null));
+
+        CountIdentifiers idCounter = new CountIdentifiers();
+        check(idCounter, 106, idCounter.scan(trees, null));
+    }
+
+    private static void check(TreeScanner<?,?> scanner, int expect, int found) {
+        if (found != expect)
+            throw new AssertionError(scanner.getClass().getName() + ": expected: " + expect + " found: " + found);
+    }
+
+    static class MyScanner extends TreeScanner<Integer,Void> {
+        @Override
+        public Integer visitImport(ImportTree tree, Void ignore) {
+            //System.err.println(tree);
+            return 1;
+        }
+
+        @Override
+        public Integer reduce(Integer i1, Integer i2) {
+            return (i1 == null ? 0 : i1) + (i2 == null ? 0 : i2);
+        }
+    }
+
+    // example from TreeScanner javadoc
+    static class CountNodes extends TreeScanner<Integer,Void> {
+        @Override
+        public Integer scan(Tree node, Void p) {
+            Integer n = super.scan(node, p);
+            return (n == null ? 0 : n) + 1;
+        }
+        @Override
+        public Integer reduce(Integer r1, Integer r2) {
+            return (r1 == null ? 0 : r1) + (r2 == null ? 0 : r2);
+        }
+    }
+
+    // example from TreeScanner javadoc
+    static class CountIdentifiers extends TreeScanner<Integer,Void> {
+        @Override
+        public Integer visitIdentifier(IdentifierTree node, Void p) {
+            return 1;
+        }
+        @Override
+        public Integer reduce(Integer r1, Integer r2) {
+            return (r1 == null ? 0 : r1) + (r2 == null ? 0 : r2);
+        }
+    }
+}