/*

 * Copyright 2009 Google Inc.  All Rights Reserved.

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

 *

 * This code is free software; you can redistribute it and/or modify it

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

 * published by the Free Software Foundation.

 *

 * 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).

 *

 * You should have received a copy of the GNU General Public License version

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

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

/**

 * @test

 * @bug 6837094

 * @summary False positive for "meet not symmetric" failure

 *

 * @run main/othervm -Xbatch

 *    -XX:CompileCommand=compileonly,compiler.c2.Test6837094::collectIs

 *    -XX:CompileCommand=compileonly,compiler.c2.Test6837094$Factory$1::getArray

 *    -XX:CompileCommand=compileonly,compiler.c2.Test6837094$Factory$2::getArray

 *    compiler.c2.Test6837094

 */

package compiler.c2;

import java.util.HashSet;

import java.util.Set;

public class Test6837094 {

  private interface Factory<M extends Interface> {

    Factory<Child0> Zero = new Factory<Child0>() {

      public Child0[] getArray() { return new Child0[1]; }

    };

    Factory<Child1> One = new Factory<Child1>() {

      public Child1[] getArray() { return new Child1[1]; }

    };

    M[] getArray();

  }

  /**

   * C2 asserts when compiling this method. Bimorphic inlining happens at

   * getArray call site. A Phi in the catch block tries to join the meet type

   * from he inline site (Parent[]) with the type expected by CI (Interface[]).

   *

   * C2 throws an assert when it doesn't need to.

   */

  private static <I extends Interface> void collectIs(

      Factory<I> factory, Set<Interface> s) {

    for (I i : factory.getArray()) {

      try {

        s.add(i);

      } catch (Exception e) {

      }

    }

  }

  static public void main(String argv[]) {

    Set<Interface> s = new HashSet();

    for (int i = 0; i < 25000; i++) {

      collectIs(Factory.Zero, s);

      collectIs(Factory.One, s);

    }

  }

  /**

   * Establish necessary class hierarchy

   */

  static interface Interface {

  }

  static class Parent {

  }

  static class Child0 extends Parent implements Interface {

  }

  static class Child1 extends Parent implements Interface {

  }

  static class Child2 extends Parent implements Interface {

  }

}