Re: GCJ problem with org.xml.sax package

["S. Park" <kanzuri at gmail dot com>]

Thanks, that did the trick. But now I'm wondering why this worked 
without -findirect-dispatch on Debian (Sarge) using gcc 4.0.

Sooyoung


Bryce McKinlay wrote:

> In GCC 4.1, some parts of libgcj, including org.xml, are compiled with 
> the new "binary compatibility" ABI. It isn't safe to call BC-ABI code 
> from code built with the old, "C++ ABI". Building your code with the 
> BC-ABI ("-findirect-dispatch") should solve the problem.
>
> The list of packages currently built with the BC-ABI in libgcj 4.1 
> includes:
>
> gnu.xml
> javax.imageio
> javax.xml
> gnu.java.beans
> gnu.java.awt.peer.gtk
> org.xml
> org.w3c
>
> Currently, code that refers directly to these classes should be built 
> with -findirect-dispatch.
>
> Bryce
>
>
> S. Park wrote:
>
> > I'm experiencing some strange behavior with a simple class compiled 
> > with gcj 4.1 on FreeBSD 4.11 and 5.4 IA32. It compiles and runs as 
> > is, but if I subclass anything in the package org.xml.sax (e.g. by 
> > uncommenting the 'extends' clause below), the executable seg faults. 
> > What's strange is that I can instantiate objects of types in that 
> > same package within the body of the main method. The problem only 
> > appears when subtyping. The test class looks like this:
> >
> > import java.util.HashMap;
> > import org.xml.sax.helpers.DefaultHandler;
> > import org.xml.sax.InputSource;
> >
> >
> > public class Foo .. extends DefaultHandler
> > {
> >       public static void main(String argv[])
> >       {
> >               InputSource is = new InputSource();
> >               String enc = is.getEncoding();
> >
> >
> > DefaultHandler dh = new DefaultHandler();
> >
> >               try
> >               {
> >                       dh.startDocument();
> >               }
> >               catch (Exception e)
> >               {
> >                       System.err.println(e.getMessage());
> >               }
> >
> >
> > System.out.println(enc);
> >
> >       }
> > }
> >
> >
> > Has anyone else run into this?
> >
> > Sooyoung