--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/T6238612.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2005 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
+ * @summary com.sun.tools.util.List.toArray violates Collection spec
+ */
+
+import com.sun.tools.javac.util.List;
+
+public class T6238612 {
+    public static void main(String... args) {
+        new T6238612().test();
+    }
+
+    boolean error = false;
+
+    // exercise the List.toArray method for a variety of lists
+    void test() {
+        test(List.<String>nil());
+        test(List.of("a"));
+        test(List.of("a", "b", "c"));
+        test(List.of("a", "b", "c", "d", "e", "f"));
+        if (error)
+            throw new Error("test failed");
+    }
+
+    // given a list, exercise the List.toArray method for a variety of arrays
+    void test(List<String> list) {
+        int n = list.size();
+        if (n > 0)
+            test(list, new String[0]);
+
+        if (n > 1)
+            test(list, new String[n - 1]);
+
+        test(list, new String[n]);
+        test(list, new String[n + 1]);
+        test(list, new String[n + 5]);
+    }
+
+    // test the List.toArray method for a particular list and array
+    void test(List<String> list, String[] array) {
+        String[] result = list.toArray(array);
+
+        if (result.length < list.size()) {
+            error("returned array is too small; expected: " + list.size() + ", found: " + result.length);
+            return;
+        }
+
+        if (list.size() <= array.length && result != array)
+            error("new array wrongly created");
+
+        int i = 0;
+        for (String s: list)
+            check(result, i++, s);
+
+        if (i < result.length)
+            check(result, i, null);
+    }
+
+    // check a specific element of an array
+    void check(String[] array, int i, String expected) {
+        if (!equal(array[i], expected))
+                error("element " + i + " incorrect; expected: " + str(expected) + ", found: " + str(array[i]));
+    }
+
+    // check if two strings are both null or are equal
+    boolean equal(String s1, String s2) {
+        return (s1 == null ? s2 == null : s1.equals(s2));
+    }
+
+    String str(String s) {
+        return (s == null ? "null" : '"' + s + '"');
+    }
+
+    void error(String message) {
+        System.err.println(message);
+        error = true;
+    }
+}