GCJ and C++ (calling Java from C++)

Mon Dec 5 19:19:00 GMT 2005

Lothar Werzinger writes:
 > On Monday 05 December 2005 03:39, Andrew Haley wrote:
 > > Lothar Werzinger writes:
 > > >From what I learned reading about CNI calling methods on interfaces
 > > >requires a special dispatch table called otable.
 > >
 > > I don't think so. As far as I'm aware the otable is only ever
 > > involved when a file has been compiled with -findirect dispatch. CNI
 > > doesn't use indirect dispatch. Without indirect dispatch, we'd expect
 > > the otable to be null.
 > 
 > The jar and the Java file are compiled with -findirect-dispatch, so I think 
 > having a null otable is bad. You should be able to see that in the build.xml 
 > in the project I sent you last time.
 > 
 > > Which line? Does the failure occur in the call to get_name?
 > 
 > As said in previous postings it fails either in 
 > 
 > JvInitClass(LibraryTestClass);
 > 
 > or in
 > 
 > String * p_name = p_library->getName();
But which? Put a breakpoint on the first line, then step over it.
Andrew.