aoqi@0: /*
aoqi@0:  * Copyright 2009 Google Inc.  All Rights Reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: /**
aoqi@0:  * @test
aoqi@0:  * @bug 6837094
aoqi@0:  * @summary False positive for "meet not symmetric" failure
aoqi@0:  *
aoqi@0:  * @run main/othervm -Xbatch -XX:CompileOnly=Test.collectIs,Test$Factory$1.getArray,Test$Factory$2.getArray Test
aoqi@0:  */
aoqi@0: 
aoqi@0: import java.util.Set;
aoqi@0: import java.util.HashSet;
aoqi@0: 
aoqi@0: public class Test {
aoqi@0: 
aoqi@0:   private interface Factory<M extends Interface> {
aoqi@0:     Factory<Child0> Zero = new Factory<Child0>() {
aoqi@0:       public Child0[] getArray() { return new Child0[1]; }
aoqi@0:     };
aoqi@0: 
aoqi@0:     Factory<Child1> One = new Factory<Child1>() {
aoqi@0:       public Child1[] getArray() { return new Child1[1]; }
aoqi@0:     };
aoqi@0: 
aoqi@0:     M[] getArray();
aoqi@0:   }
aoqi@0: 
aoqi@0:   /**
aoqi@0:    * C2 asserts when compiling this method. Bimorphic inlining happens at
aoqi@0:    * getArray call site. A Phi in the catch block tries to join the meet type
aoqi@0:    * from he inline site (Parent[]) with the type expected by CI (Interface[]).
aoqi@0:    *
aoqi@0:    * C2 throws an assert when it doesn't need to.
aoqi@0:    */
aoqi@0:   private static <I extends Interface> void collectIs(
aoqi@0:       Factory<I> factory, Set<Interface> s) {
aoqi@0:     for (I i : factory.getArray()) {
aoqi@0:       try {
aoqi@0:         s.add(i);
aoqi@0:       } catch (Exception e) {
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   static public void main(String argv[]) {
aoqi@0:     Set<Interface> s = new HashSet();
aoqi@0: 
aoqi@0:     for (int i = 0; i < 25000; i++) {
aoqi@0:       collectIs(Factory.Zero, s);
aoqi@0:       collectIs(Factory.One, s);
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: /**
aoqi@0:  * Establish necessary class hierarchy
aoqi@0:  */
aoqi@0: 
aoqi@0: interface Interface {
aoqi@0: }
aoqi@0: 
aoqi@0: class Parent {
aoqi@0: }
aoqi@0: 
aoqi@0: class Child0 extends Parent implements Interface {
aoqi@0: }
aoqi@0: 
aoqi@0: class Child1 extends Parent implements Interface {
aoqi@0: }
aoqi@0: 
aoqi@0: class Child2 extends Parent implements Interface {
aoqi@0: }