Linking libgcj, and Java security

Tue Dec 3 12:13:00 GMT 2002

> -----Original Message-----
> From: Andrew Haley [mailto:aph@redhat.com]
>> Jeff Sturm writes:
> > On Tue, 3 Dec 2002, Andrew Haley wrote:
> > > Before I submit a patch, is there any good reason _not_ to use
> > > -Bsymbolic?
> > 
> > Back when Bryce and I tried it, it didn't quite work. 
> IIRC the GC relies
> > on global symbol relocations to resolve DATASTART, 
> DATAEND. There may be
> > other problems. There should be some discussion in the archives.
>> Okay. I would have thought that the best bet was to fix 
> whatever issues
> prevent -Bsymbolic from being used. Hans?
Unfortunately, I neither recall issues related to this, nor can I find them in the archives. The collector needs __data_start resolved to the start of the main (not libgcj) data segment, and analogously for _end. If -Bsymbolic causes it to refer to something else, then we have a problem. Under Linux, this can probably be worked around with /proc/self/maps, though that's not ideal. There may be other solutions.
> I confess that linker magic is not my strongest subject.
>> Andrew.
>Unfortunately, it isn't mine either.
Hans