InlineDefaultMethod.java

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 * version 2 for more details (a copy is included in the LICENSE file that
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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 8026735
 * @summary CHA in C1 should make correct decisions about default methods
 *
 * @run main/othervm -Xcomp -XX:TieredStopAtLevel=1
 *      -XX:CompileCommand=compileonly,compiler.inlining.InlineDefaultMethod::test
 *      compiler.inlining.InlineDefaultMethod
 */

package compiler.inlining;
public class InlineDefaultMethod {
    interface InterfaceWithDefaultMethod0 {
        default public int defaultMethod() {
            return 1;
        }
    }

    interface InterfaceWithDefaultMethod1 extends InterfaceWithDefaultMethod0 { }

    static abstract class Subtype implements InterfaceWithDefaultMethod1 { }

    static class Decoy extends Subtype {
        public int defaultMethod() {
            return 2;
        }
    }

    static class Instance extends Subtype { }

    public static int test(InterfaceWithDefaultMethod1 x) {
        return x.defaultMethod();
    }
    public static void main(String[] args) {
        InterfaceWithDefaultMethod1 a = new Decoy();
        InterfaceWithDefaultMethod1 b = new Instance();
        if (test(a) != 2 ||
            test(b) != 1) {
          System.err.println("FAILED");
          System.exit(97);
        }
        System.err.println("PASSED");
    }
}