Null Pointer Exception in LibgcjInternalFinalizerThread

Thu Mar 4 17:35:00 GMT 2004

Rudy Nedved wrote:
> Hi.
>> I am getting a null pointer exception in libgcj's finalizer thread 
> using the
> 3.3.1 gcc and some additional deltas pulled in from 3.3.3.
>> The stack trace pops up after a while in a large java system and shows
> java.util.Vector.addAll(Collection c)
> being called by the finalizer thread with probably a null pointer
> for the collection....
>> I found a thread discussing something similiar but related to reference
> objects:
> http://gcc.gnu.org/ml/java/2003-08/msg00247.html
>> My *real* question is why can't you have finalizations causing 
> exceptions? Shouldn't this be expected and ignored? 

If you are using Reference objects, then you are probably running into 
the bug. The fix never made it into the gcc-3_3-branch.
I beleive that the changes you want are in java/lang/ref/Reference.java 
Rev 1.7 and java/lang/ref/natReference.cc Rev 1.5
David Daney.