Re: [Sablevm-developer] PR: ClassFormatError

[Etienne G. <gag...@uq...>]

Hi Andreas,

It's a problem with your class file, not a problem with SableVM.

Using Sun's JDK:

$ java -verify  BFprogram
Exception in thread "main" java.lang.ClassFormatError: BFprogram (Extra bytes at the end of the class file)
         at java.lang.ClassLoader.defineClass0(Native Method)
         at java.lang.ClassLoader.defineClass(ClassLoader.java:537)
         at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
         at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
         at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
         at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
         at java.security.AccessController.doPrivileged(Native Method)
         at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
         at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
         at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
         at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
         at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)

ooO( lucky me! )  ;-)

Etienne
PS: SableVM has no verifier, yet it does actually enforce some basic
stuctural integrity rules on class files.

Andreas Heck wrote:
> Hello everybody,
> 
> I have run into a execution problem with SableVM. When I start the
> program which is appended to this mail on LinuxPPC with SableVM I get
> the following error message:
> 
> java.lang.ClassFormatError
> 
> When I execute it with kaffe on the same machine or with Sun's jre 1.4.2 on
> Win2K it runs without any problems.
> 
> The program is written in jasmin assembly code. Don't wonder about the
> weird code. It's the output of a brainfuck compiler I'm playing around
> with at the moment.
> 
> 
> Andreas
> 


-- 
Etienne M. Gagnon, Ph.D.             http://www.info.uqam.ca/~egagnon/
SableVM:                                       http://www.sablevm.org/
SableCC:                                       http://www.sablecc.org/