DefaultMethodsDependencies.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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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 8069263
 * @summary Deoptimization between array allocation and arraycopy may result in non initialized array
 *
 * @run main/othervm -XX:-BackgroundCompilation
 *      -XX:CompileCommand=compileonly,compiler.inlining.DefaultMethodsDependencies::test
 *      -XX:CompileCommand=compileonly,compiler.inlining.DefaultMethodsDependencies$I2::m1
 *      compiler.inlining.DefaultMethodsDependencies
 */

package compiler.inlining;

public class DefaultMethodsDependencies {

    interface I1 {
        void m1();
        // triggers processing of default methods in C1
        default void m2() {
        }
    }

    interface I2 extends I1 {
        // added to C2 as default method
        default void m1() {
        }
    }

    static abstract class C1 implements I1 {
    }

    static class C2 extends C1 implements I2 {
    }

    static void test(C1 obj) {
        obj.m1();
    }

    static public void main(String[] args) {
        C2 obj = new C2();
        for (int i = 0; i < 20000; i++) {
            test(obj);
        }
    }
}