1) Create following class:

import java.io.*;

public class test {

  static private final boolean DEBUG = false;
      // Only used when serving via polled I/O:

  public static void main(String[] args) throws IOException {
      if (!toto()) {
          /// whatever
      }
  }

  // Combination of !DEBUG and try that is causing bug
  static boolean toto() {

      if (!DEBUG) { return false ; }

      try {
           System.out.println("toto");
      } catch (Exception e) { return false; }
      return false;
  }

}

2). Compile with fastjavac

  fastjavac test.java

 3). Run with java vm
 java -version
 java version "1.3.0_01"
 Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0_01)
 Java HotSpot(TM) Client VM (build 1.3.0_01, mixed mode)

 java test

 which generates the following:

 Exception in thread "main" java.lang.ClassFormatError: test (Invalid pc in
line number table)
        at java.lang.ClassLoader.defineClass0(Native Method)
        at java.lang.ClassLoader.defineClass(Unknown Source)
        at java.security.SecureClassLoader.defineClass(Unknown Source)
        at java.net.URLClassLoader.defineClass(Unknown Source)
        at java.net.URLClassLoader.access$100(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClassInternal(Unknown Source)

 *Note: if I compile the code with javac then it works fine.

  4) fastjava version:

fastjava -version:
fastjavac: version 4.0, 11/04/00-10:39, build #461