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

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 *

 * 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).

 *

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 * 2 along with this work; if not, write to the Free Software Foundation,

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/**

 * @test

 * @bug 6478991

 * @summary C1 NullCheckEliminator yields incorrect exceptions

 *

 * @run main/othervm -XX:CompileOnly=NullCheckTest.test,NullCheckTest.inlined  -Xcomp NullCheckTest

 */

public class NullCheckTest {

        static class A {

                int f;

                public final void inlined(A a) {

                        // This cast is intended to fail.

                        B b = ((B) a);

                }

        }

        static class B extends A {

        }

        private static void test(A a1, A a2) {

                // Inlined call must do a null check on a1.

                // However, the exlipcit NullCheck instruction is eliminated and

                // the null check is folded into the field load below, so the

                // exception in the inlined method is thrown before the null check

                // and the NullPointerException is not thrown.

                a1.inlined(a2);

                int x = a1.f;

        }

        public static void main(String[] args) {

                // load classes

                new B();

                try {

                        test(null, new A());

                        throw new InternalError("FAILURE: no exception");

                } catch (NullPointerException ex) {

                        System.out.println("CORRECT: NullPointerException");

                } catch (ClassCastException ex) {

                        System.out.println("FAILURE: ClassCastException");

                        throw ex;

                }

        }

}