--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/interned/SanityTest.java	Tue Apr 02 11:28:33 2013 +0200
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test SanityTest
+ * @summary Sanity check of String.intern() & GC
+ * @library /testlibrary /testlibrary/whitebox
+ * @build SanityTest
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI SanityTest
+ */
+
+import java.util.*;
+import sun.hotspot.WhiteBox;
+
+
+public class SanityTest {
+    public static Object tmp;
+    public static void main(String... args) {
+
+        WhiteBox wb = WhiteBox.getWhiteBox();
+        StringBuilder sb = new StringBuilder();
+        sb.append("1234x"); sb.append("x56789");
+        String str = sb.toString();
+
+        if (wb.isInStringTable(str)) {
+            throw new RuntimeException("String " + str + " is already interned");
+        }
+        str.intern();
+        if (!wb.isInStringTable(str)) {
+            throw new RuntimeException("String " + str + " is not interned");
+        }
+        str = sb.toString();
+        wb.fullGC();
+        if (wb.isInStringTable(str)) {
+            throw new RuntimeException("String " + str + " is in StringTable even after GC");
+        }
+    }
+}