Interesting dwarf-2/shared lib problem.
Kris Warkentin
kewarken@qnx.com
Tue Dec 2 16:49:00 GMT 2003
> > I observed that libdisplay.so has been loaded with a psymtab and that
the
> > code in lookup_symtab() only searches through objects which have a full
> > symtab loaded. This would seem to be why it's not finding display.c.
I'm
> > supposing that when you do a break on a function, the full symtab is
then
> > loaded.
> >
> > Note also that this goes away if the source is compiled with the stabs+
> > debugging format. I'm pondering the solution to this. Is there a way
to
> > force gdb to load the full symbol table for all shared objects? Or is
there
> > a better way to get around this?
>
> >From lookup_symtab:
> /* Same search rules as above apply here, but now we look thru the
> psymtabs. */
>
> ps = lookup_partial_symtab (name);
> if (!ps)
> return (NULL);
>
> Is that not working?
Ah...interesting. For the main object, the symtab points to
c:\some_dir\main.c and the symtab->next points to just main.c. It's the
main.c that gets caught and returned. In the solib, we only see the
c:\some_lib\display.c so the FILENAME_CMP fails..
So you are correct, lookup_partial_symtab is failing.
cheers,
Kris
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