Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: test/compiler/6865265/StackOverflowBug.java
test/compiler/6865265/StackOverflowBug.java
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| 1 /* | |
| 2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 /** | |
| 26 * @test | |
| 27 * @bug 6865265 | |
| 28 * @summary JVM crashes with "missing exception handler" error | |
| 29 * @author volker.simonis@sap.com | |
| 30 * | |
| 31 * @run main/othervm -XX:CompileThreshold=100 -Xbatch -Xss248k StackOverflowBug | |
| 32 */ | |
| 33 | |
| 34 | |
| 35 public class StackOverflowBug { | |
| 36 | |
| 37 public static int run() { | |
| 38 try { | |
| 39 try { | |
| 40 return run(); | |
| 41 } catch (Throwable e) { | |
| 42 // Notice that the class 'Throwable' is NOT resolved by the verifier, | |
| 43 // because the verifier only checks if 'Throwable' is assignable to | |
| 44 // 'java.lang.Throwable' and this check succeeds immediately if the two | |
| 45 // types have equal names (see 'VerificationType::is_assignable_from' which | |
| 46 // is called from 'ClassVerifier::verify_exception_handler_table'). | |
| 47 // This is strange, because if the two classes have different names, | |
| 48 // 'is_assignable_from()' calls 'is_reference_assignable_from()' which resolves | |
| 49 // both classes by calling 'SystemDictionary::resolve_or_fail()'. This call | |
| 50 // also takes into account the current class loader (i.e. the one which was used | |
| 51 // to load this class) and would place a corresponding | |
| 52 // "java.lang.Throwable / current-Classloader" entry into the system dictionary. | |
| 53 // This would in turn allow C2 to see 'java.lang.Throwable' as "loaded" | |
| 54 // (see 'Parse::catch_inline_exceptions()') when this method is compiled. | |
| 55 return 42; | |
| 56 } | |
| 57 } | |
| 58 finally { | |
| 59 } | |
| 60 } | |
| 61 | |
| 62 public static void main(String argv[]) { | |
| 63 run(); | |
| 64 } | |
| 65 } | |
| 66 | |
| 67 /* | |
| 68 public static int run(); | |
| 69 Code: | |
| 70 0: invokestatic #2 // Method run:()I | |
| 71 3: istore_0 | |
| 72 4: iload_0 | |
| 73 5: ireturn | |
| 74 6: astore_0 | |
| 75 7: bipush 42 | |
| 76 9: istore_1 | |
| 77 10: iload_1 | |
| 78 11: ireturn | |
| 79 12: astore_2 | |
| 80 13: aload_2 | |
| 81 14: athrow | |
| 82 Exception table: | |
| 83 from to target type | |
| 84 0 4 6 Class java/lang/Throwable | |
| 85 0 4 12 any | |
| 86 6 10 12 any | |
| 87 12 13 12 any | |
| 88 | |
| 89 */ |
