Java example source code file (StackOverflowBug.java)

This example Java source code file (StackOverflowBug.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

stackoverflowbug, throwable

The StackOverflowBug.java Java example source code

/*
 * 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 -Xss248k 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

 */