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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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

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 * accompanied this code).

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/**

 * @test

 * @bug 8038420

 * @summary Lambda returning post-increment generates wrong code

 * @run main LambdaIncrement

 */

public class LambdaIncrement {

    interface IntegerOp { Integer apply(Integer arg); }

    private static void assertNotIncremented(IntegerOp lmb, String label) {

        int result = lmb.apply(3);

        if (result != 3) {

            throw new AssertionError("Post-increment failure. Expected 3, got: " +

                                     result + " " + label);

        }

    }

    public static void main(String... args) throws Exception {

        assertNotIncremented(x -> x++, "PostIncExpr");

        assertNotIncremented(x -> { return x++; }, "PostIncReturn");

        assertNotIncremented(x -> { int y = x; return y++; }, "PostIncLocal");

        assertNotIncremented(x -> { Integer y = x; return y++; }, "PostIncLocalBox");

        assertNotIncremented(x -> { int y = x; return y; }, "HASINIT");

    }

}