--- old/test/compiler/runtime/6865265/StackOverflowBug.java 2016-07-06 19:21:10.915394486 +0300 +++ /dev/null 2016-06-14 14:43:27.230512026 +0300 @@ -1,89 +0,0 @@ -/* - * Copyright (c) 2011, 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 6865265 - * @summary JVM crashes with "missing exception handler" error - * @author volker.simonis@sap.com - * - * @run main/othervm -XX:CompileThreshold=100 -Xbatch -Xss512k StackOverflowBug - */ - - -public class StackOverflowBug { - - public static int run() { - try { - try { - return run(); - } catch (Throwable e) { - // Notice that the class 'Throwable' is NOT resolved by the verifier, - // because the verifier only checks if 'Throwable' is assignable to - // 'java.lang.Throwable' and this check succeeds immediately if the two - // types have equal names (see 'VerificationType::is_assignable_from' which - // is called from 'ClassVerifier::verify_exception_handler_table'). - // This is strange, because if the two classes have different names, - // 'is_assignable_from()' calls 'is_reference_assignable_from()' which resolves - // both classes by calling 'SystemDictionary::resolve_or_fail()'. This call - // also takes into account the current class loader (i.e. the one which was used - // to load this class) and would place a corresponding - // "java.lang.Throwable / current-Classloader" entry into the system dictionary. - // This would in turn allow C2 to see 'java.lang.Throwable' as "loaded" - // (see 'Parse::catch_inline_exceptions()') when this method is compiled. - return 42; - } - } - finally { - } - } - - public static void main(String argv[]) { - run(); - } -} - -/* - public static int run(); - Code: - 0: invokestatic #2 // Method run:()I - 3: istore_0 - 4: iload_0 - 5: ireturn - 6: astore_0 - 7: bipush 42 - 9: istore_1 - 10: iload_1 - 11: ireturn - 12: astore_2 - 13: aload_2 - 14: athrow - Exception table: - from to target type - 0 4 6 Class java/lang/Throwable - 0 4 12 any - 6 10 12 any - 12 13 12 any - - */ --- /dev/null 2016-06-14 14:43:27.230512026 +0300 +++ new/test/compiler/runtime/StackOverflowBug.java 2016-07-06 19:21:10.631394477 +0300 @@ -0,0 +1,90 @@ +/* + * Copyright (c) 2011, 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 6865265 + * @summary JVM crashes with "missing exception handler" error + * @author volker.simonis@sap.com + * + * @run main/othervm -XX:CompileThreshold=100 -Xbatch -Xss512k + * compiler.runtime.StackOverflowBug + */ + +package compiler.runtime; + +public class StackOverflowBug { + + public static int run() { + try { + try { + return run(); + } catch (Throwable e) { + // Notice that the class 'Throwable' is NOT resolved by the verifier, + // because the verifier only checks if 'Throwable' is assignable to + // 'java.lang.Throwable' and this check succeeds immediately if the two + // types have equal names (see 'VerificationType::is_assignable_from' which + // is called from 'ClassVerifier::verify_exception_handler_table'). + // This is strange, because if the two classes have different names, + // 'is_assignable_from()' calls 'is_reference_assignable_from()' which resolves + // both classes by calling 'SystemDictionary::resolve_or_fail()'. This call + // also takes into account the current class loader (i.e. the one which was used + // to load this class) and would place a corresponding + // "java.lang.Throwable / current-Classloader" entry into the system dictionary. + // This would in turn allow C2 to see 'java.lang.Throwable' as "loaded" + // (see 'Parse::catch_inline_exceptions()') when this method is compiled. + return 42; + } + } finally { + } + } + + public static void main(String argv[]) { + run(); + } +} + +/* + public static int run(); + Code: + 0: invokestatic #2 // Method run:()I + 3: istore_0 + 4: iload_0 + 5: ireturn + 6: astore_0 + 7: bipush 42 + 9: istore_1 + 10: iload_1 + 11: ireturn + 12: astore_2 + 13: aload_2 + 14: athrow + Exception table: + from to target type + 0 4 6 Class java/lang/Throwable + 0 4 12 any + 6 10 12 any + 12 13 12 any + + */