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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
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 *
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 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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 */

/*
 * @test
 * @bug 8208752
 * @summary NPE generating serializedLambdaName for nested lambda
 * @compile/ref=LambdaSerializedClassCastException.out -XDrawDiagnostics --debug=dumpLambdaDeserializationStats LambdaSerializedClassCastException.java
 * @run main LambdaSerializedClassCastException
 */

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.function.Function;

public class LambdaSerializedClassCastException {

    public static void main(String[] args) throws Exception {

        Function<String, String> lambda1 =
                (Function<String, String> & Serializable) Object::toString;
        Function<Object, String> lambda2 =
                (Function<Object, String> & Serializable) Object::toString;

        Function<Object, String> deserial = serialDeserial(lambda2);
        deserial.apply(new Object());
    }

    @SuppressWarnings("unchecked")
    static <T> T serialDeserial(T object) throws Exception {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        try (ObjectOutputStream oos = new ObjectOutputStream(baos)) {
            oos.writeObject(object);
        }
        try (ObjectInputStream ois =
                new ObjectInputStream(new ByteArrayInputStream(baos.toByteArray()))) {
            return (T) ois.readObject();
        }
    }
}