| /* |
| * Copyright (c) 2015, 2016, 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 8075118 |
| * @summary JVM stuck in infinite loop during verification |
| * @compile HandlerInTry.jasm |
| * @compile IsolatedHandlerInTry.jasm |
| * @run main/othervm -Xverify:all LoadHandlerInTry |
| */ |
| |
| /* |
| * This test has two cases: |
| * |
| * 1. class HandlerInTry: Class HandlerInTry contains a TRY block in a |
| * constructor whose handler is inside the same TRY block. The last |
| * few bytecodes and exception table look like this: |
| * |
| * ... |
| * 87: athrow |
| * 88: astore 4 |
| * 90: invokestatic #9 |
| * 93: aload 4 |
| * 95: athrow |
| * 96: return |
| * Exception table: |
| * from to target type |
| * 36 46 53 Class java/lang/Throwable |
| * 36 46 88 any |
| * 53 90 88 any |
| * |
| * Note that the target for the third handler in the Exception table is |
| * inside its TRY block. |
| * Without the fix for bug JDK-8075118, this test will time out. |
| * |
| * |
| * 2. class IsolatedHandlerInTry: Class IsolatedHandlerInTry also contains |
| * a TRY block in a constructoer whose handler is inside its TRY block. |
| * But the handler is only reachable if an exception is thrown. The |
| * handler's bytecodes will not get parsed as part of parsing the TRY |
| * block. They will only get parsed as a handler for the TRY block. |
| * Since the isolated handler does a 'return', a VerifyError exception |
| * should get thrown. |
| */ |
| |
| public class LoadHandlerInTry { |
| |
| public static void main(String[] args) throws Exception { |
| System.out.println("Regression test for bug 8075118"); |
| try { |
| Class newClass = Class.forName("HandlerInTry"); |
| throw new RuntimeException( |
| "Failed to throw VerifyError for HandlerInTry"); |
| } catch (java.lang.VerifyError e) { |
| System.out.println("Passed: VerifyError exception was thrown"); |
| } |
| |
| try { |
| Class newClass = Class.forName("IsolatedHandlerInTry"); |
| throw new RuntimeException( |
| "Failed to throw VerifyError for IsolatedHandlerInTry"); |
| } catch (java.lang.VerifyError e) { |
| System.out.println("Passed: VerifyError exception was thrown"); |
| } |
| } |
| } |