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/*
* Copyright (c) 2002, 2010, Oracle and/or its affiliates. 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 4698375
* @summary generics: subtyping problem when type parameters permuted
* @author gafter
*
* @compile PermuteBound.java
*/
package PermuteBound;
class C<X, Y> {}
class D<X, Y> extends C<X, Y>
{
void f(C<X, Y> c)
{
D<X, Y> d = (D<X, Y>) c;// OK because D extends C
}
void g(C<Y, X> c)// parameters X and Y are now permuted
{
D<Y, X> d = (D<Y, X>) c;// should also be OK but is not !?
// ^
// inconvertible types
// found : C<Y,X>
// required : D<Y,X>
}
/*
void gWorkAround(C<Y, X> c)// but generates unchecked warning
{
D<Y, X> d = (D) ((C) c);
}
*/
}
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