Re: [Sablevm-developer] Re: Running jetty

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

Hmmm...

Laurent Martelli wrote:
> It's not really a small test case since it relies on Jetty, but it
> triggers 
>... 

Somehow, the isAssignableFrom is called at a time when OutputStreamLogSink
is not yet *prepared* (this is even before initialization!).  As preparation
is where the appropriate structures are created for doing constant-time
instanceof checks, it explains why the check fails (as the data used for
the check is invalid).

So, some code lets a Class reference escape prior to preparation!  This must
be fixed...  This will require some hunting.

Feel free to help.  To do so, reconfigure and recompile sablevm:

$ cd sablevm-staging-...
$ ./configure --enable-debugging-features # then any other option use previously used
$ make clean
$ make
$ make install

then, I recommend that you use ddd to debug sablevm:

$ ddd path-to../bin/sablevm &

[on Debian, you simply:
$ apt-get install ddd
]

Have fun!

Etienne

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