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 -Xss392k 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  */