1 /*
   2  * Copyright 2002-2003 Sun Microsystems, Inc.  All Rights Reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
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  22  */
  23 
  24 /*
  25  * @test
  26  * @ bug
  27  * @summary Regression test from odersky
  28  * @author odersky
  29  *
  30  * @compile  BadTest2.java
  31  */
  32 
  33 // this used to be a negative regression test, but when we
  34 // added variance it started passing, undoubtedly due to
  35 // bug fixes.  The code looks OK.
  36 class BadTest2 {
  37 
  38     interface I {}
  39     interface J {}
  40     static class C implements I, J {}
  41     static class D implements I, J {}
  42 
  43     static class Main {
  44 
  45         static C c = new C();
  46         static D d = new D();
  47 
  48         static <A> boolean equals(A x, A y) { return x.equals(y); }
  49 
  50         public static void main(String[] args) {
  51             equals(c, d); // infer A=I&J
  52         }
  53     }
  54 
  55 }