--- /dev/null	Tue Mar 17 14:11:37 2009
+++ new/test/java/math/BigInteger/CompareToTests.java	Tue Mar 17 14:11:36 2009
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2009 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 1234566
+ * @summary Verify compareTo works for a range of arguments
+ * @author Joseph D. Darcy
+ */
+
+import java.math.*;
+import static java.math.BigInteger.*;
+
+public class CompareToTests {
+    
+    public static void main(String... argv) {
+	int failures = 0;
+
+	BigInteger[] specialValues = {
+	    new BigInteger("-9223372036854775809"), // Long.MIN_VALUE - 1
+	    valueOf(Long.MIN_VALUE),
+	    valueOf(-2147483649L), // Integer.MIN_VALUE - 1
+	    valueOf(Integer.MIN_VALUE),
+	    valueOf(-2),
+	    valueOf(-1),
+	    valueOf(0),
+	    valueOf(1),
+	    valueOf(2),
+	    valueOf(Integer.MAX_VALUE),
+	    valueOf(2147483648L), // Integer.MAX_VALUE + 1
+	    valueOf(Long.MAX_VALUE),
+	    new BigInteger("9223372036854775808"), // Long.MAX_VALUE +1
+	};
+	
+	for (int i = 0; i < specialValues.length; i++) {
+	    BigInteger rhs = specialValues[i];
+	    
+	    failures += compare(rhs, rhs, 0); // Self-compare
+
+	    for (int j = i+1; j < specialValues.length; j++) {
+		BigInteger lhs = specialValues[j];
+		failures += compare(rhs, lhs, -1);
+		failures += compare(lhs, rhs,  1);
+	    }
+
+	}
+
+	if (failures > 0) {
+	    System.err.printf("%d failures encountered.", failures);
+	    throw new RuntimeException();
+	}
+    }
+
+    private static int compare(BigInteger rhs,  BigInteger lhs, int expected) {
+	int compareResult = rhs.compareTo(lhs);
+	if (compareResult != expected) {
+	    System.err.printf("Bad compareTo on %s.compareTo(%s) => %d, expected %d%n", 
+			      rhs, lhs, compareResult, expected);
+	    return 1;
+	} else
+	    return 0;
+    }
+}