aoqi@0: /*
aoqi@0:  * Copyright (c) 2014, Oracle and/or its affiliates. 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:  * @test
aoqi@0:  * @bug 8023945
aoqi@0:  * @summary javac wrongly allows a subclass of an anonymous class
aoqi@0:  * @library /tools/javac/lib
aoqi@0:  * @build ToolBox
aoqi@0:  * @run main AnonymousSubclassTest
aoqi@0:  */
aoqi@0: 
aoqi@0: import java.util.ArrayList;
aoqi@0: import java.io.IOException;
aoqi@0: 
aoqi@0: public class AnonymousSubclassTest {
aoqi@0:     public static void main(String... args) throws Exception {
aoqi@0:         new AnonymousSubclassTest().run();
aoqi@0:     }
aoqi@0: 
aoqi@0:     // To trigger the error we want, first we need to compile
aoqi@0:     // a class with an anonymous inner class: Foo$1.
aoqi@0:     final String foo =
aoqi@0:         "public class Foo {" +
aoqi@0:         "  void m() { Foo f = new Foo() {}; }" +
aoqi@0:         "}";
aoqi@0: 
aoqi@0:     // Then, we try to subclass the anonymous class
aoqi@0:     // Note: we must do this in two classes because a different
aoqi@0:     // error will be generated if we don't load Foo$1 through the
aoqi@0:     // class reader.
aoqi@0:     final String test1 =
aoqi@0:         "public class Test1 {" +
aoqi@0:         "  void m() {"+
aoqi@0:         "    Foo f1 = new Foo();"+
aoqi@0:         "    Foo f2 = new Foo$1(f1) {};"+
aoqi@0:         "  }" +
aoqi@0:         "}";
aoqi@0: 
aoqi@0:     final String test2 =
aoqi@0:         "public class Test2 {" +
aoqi@0:         "  class T extends Foo$1 {" +
aoqi@0:         "    public T(Foo f) { super(f); }" +
aoqi@0:         "  }"+
aoqi@0:         "}";
aoqi@0: 
aoqi@0:     void compOk(String code) throws Exception {
aoqi@0:         ToolBox.javac(new ToolBox.JavaToolArgs().setSources(code));
aoqi@0:     }
aoqi@0: 
aoqi@0:     void compFail(String code) throws Exception {
aoqi@0:         ArrayList<String> errors = new ArrayList<>();
aoqi@0:         ToolBox.JavaToolArgs args = new ToolBox.JavaToolArgs();
aoqi@0:         args.setSources(code)
aoqi@0:             .appendArgs("-cp", ".", "-XDrawDiagnostics")
aoqi@0:             .set(ToolBox.Expect.FAIL)
aoqi@0:             .setErrOutput(errors);
aoqi@0:         ToolBox.javac(args);
aoqi@0: 
aoqi@0:         if (!errors.get(0).contains("cant.inherit.from.anon")) {
aoqi@0:             System.out.println(errors.get(0));
aoqi@0:             throw new Exception("test failed");
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     void run() throws Exception {
aoqi@0:         compOk(foo);
aoqi@0:         compFail(test1);
aoqi@0:         compFail(test2);
aoqi@0:     }
aoqi@0: }