53 lines
2.1 KiB
Java
53 lines
2.1 KiB
Java
/*
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* Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8189659
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* @summary Verify that the infinite loop of bridges from JDK-6996415 is not reintroduced
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* @run main VerifyNoBridgeLoopTest
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*/
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public class VerifyNoBridgeLoopTest {
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static class Expression {}
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abstract static class ExpVisitor<R,D> {
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static int f = 1;
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protected R visitExpression (Expression exp, D d) { f *= 100; System.out.println(exp); return null; }
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}
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abstract static class ExpExpVisitor<D> extends ExpVisitor<Expression,D> { }
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static class FindTail extends ExpExpVisitor<Expression> {
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protected Expression visitExpression (Expression exp, Expression returnContinuation) {
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return super.visitExpression(exp, exp);
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}
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}
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public static void main(String [] args) {
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new FindTail().visitExpression(new Expression(), new Expression());
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ExpVisitor<Expression, Expression> e = new FindTail();
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e.visitExpression(new Expression(), new Expression());
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if (e.f != 10000)
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throw new AssertionError("Incorrect call sequence");
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}
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}
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