Re: Unrecognized bytecode JSR ?

[CHEN FU <chenfu@paul.rutgers.edu>]

I don't actually know  how to get the version of javac.
I'm using jdk 1.3.0 should this be the version of javac? If that's the
case could you please show me the warnings javac1.4.2 gave you? Or even 
give me the request.class file generated using "-target 1.3.0"? I'm having
trouble intalling new
version of java jdk on this machine right now. 

Thanks a lot!

And to make my analysis more precise, I've been making some assumptions in
about java libraries based on some facts in jdk 1.3  So I can't just kept
updating jdk :-(

The code in that class is ugly, but it works as a proxy server. So may be
the generated code is correct. 

On Tue, 12 Aug 2003, Ondrej LHOTAK wrote:

> If I compile it with javac 1.4.1, I get the error you describe.
> If I compile it with javac 1.4.2, I get warnings from javac about
> finally blocks, but then Soot handles the code just fine.
> 
> There were some bug fixes for weird try-finally code in javac 1.4.2.
> See the reference in the release notes to bug 4381996.
> http://developer.java.sun.com/developer/bugParade/bugs/4381996.html
> 
> I don't know whether the code produced by javac 1.4.1 is in fact buggy,
> or if it is just different, but in any case, it seems to confuse
> Jimple's jsr inlining. The warnings from javac 1.4.2 suggest that the
> code is doing something bizarre. I would recommend just using javac
> 1.4.2.
> 
> Ondrej
> 
> On Tue, Aug 12, 2003 at 11:03:14AM -0400, CHEN FU wrote:
> > I met the following exception when working a some class:
> > 
> > Exception in thread "main" java.lang.RuntimeException: Unrecognized
> > bytecode 
> > instruction: 168
> >         at soot.coffi.CFG.generateJimple(CFG.java:4748)
> >         at soot.coffi.CFG.jimplify(CFG.java:1436)
> >         at soot.coffi.CFG.jimplify(CFG.java:1099)
> >         at soot.coffi.CoffiMethodSource.getBody(CoffiMethodSource.java:98)
> >         at soot.SootMethod.getBodyFromMethodSource(SootMethod.java:80)
> >         at soot.SootMethod.retrieveActiveBody(SootMethod.java:279)
> > 
> > I understand that JSR and RET should be inlined. Is this a inlining
> > problem?
> > 
> > I got this when try to analyse an small application "Smart Cache"
> > downloaded from:
> > http://home.tiscali.cz:8080/~cz210552/scache.html
> > 
> > down load the tar ball, extract and compile it. then go to 
> > 
> > scache-0.88/src
> > java soot.Main request
> > 
> > Then I got the exception.
> > Anyone can replicate that error?
> > 
> > Thanks!
> > 
>