LambdaConstructorMethodHandleUnbox.java

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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
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 * 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 8016761
 * @summary Lambda metafactory: incorrect type conversion of constructor method handle
 */

public class LambdaConstructorMethodHandleUnbox {
    interface IntFunction<X> {
        int m(X x);
    }

    public static void main(String[] args) {
       IntFunction<String> s = Integer::new;
       if (s.m("2000") + s.m("13") != 2013) {
           throw new RuntimeException("Lambda conversion failure");
       }
    }
}