Quelle Closure4.java Sprache: JAVA

/*
* Copyright (c) 2001, 2004, 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 4030374
* @summary Initialization of up-level links, immediately after super(), occurs too late.
* @author gafter
*
* @compile Closure4.java
* @run main Closure4
*/

// Make sure the closure is present when the superclass is constructed.
// Specifically, Closure4.$1 must have its Closure4.this initialized when Inner calls foo().

public class Closure4 {

    public int v;

    public Closure4() {
        v = 0;

        Inner i = new Inner() {
            public void foo() {
                if (v != 0) throw new Error();
            }
        };

        i.foo();
    }

    public static void main(String[] arg) {
        new Closure4();
    }
}

class Inner {
    Inner() {
        foo();
    }

    public void foo() { throw new Error(); }
}

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