Dbx: internal error: signal SIGSEGV (no mapping at the fault address

Question

I know this has been discussed before but I'm posting here because I'm not sure if it is my stupidity or dbx that is causing this...
I'm trying to debug a program which links against the gts (GNU triangulated surface) library which has been compiled with gcc version 4.3.2. dbx crashes when asked to step over or into a line where a reference is made to the gts library. It also crashes if asked to load all modules (module -a).
I assume that this is because the dwarf produced by gcc is incompatible with dbx although, from reading other pages I had assumed that dbx was now fully compatible with gcc dwarf. I can find no (human readable) core file in /tmp. What am I looking for (which file name).
So, can any one give me any hints? Are there any files I can post which would be helpful? A simple test case (you will need the gts library installed) is
#include <stdio.h>
#include <stdlib.h>
#include "gts.h"
int main(int argc, char** argv) {
   GtsSurface *surf = gts_surface_new(gts_surface_class(),gts_face_class(),gts_edge_class(),gts_vertex_class());
   return (EXIT_SUCCESS);
}System is Ubuntu Linux 8.10 on x64 system.
Cheers, Tim

Answer 1

OK, the plot thickens. I've compiled the gts library with -gdwarf-2 by doing make clean, ./install CFLAGS=-gdwarf-2 then make install. Still get the same error when stepping over a line which calls the gts library.
My next angle of attack was to compile the entire gts library with sun cc. I held off doing this at first because I assumed that there would be inevitable problems moving from compiling with gcc to sun cc however, my worries were unfounded and the entire library compiled with no changes and without any significant warnings. So, I tried the same as before, compiling the test program and sure enough dbx crashes when stepping over a line which calls the gts library. Dbx also crashes if asked to load a module from the gts library, i.e. module surface.o
Any suggestions?
Tim