question about expand_symtabs_matching()

Hello


This is probably a stupid question.

In gdb/linespec.c:1146 is this call:

      if (objfile->sf)
        objfile->sf->qf->expand_symtabs_matching (objfile,
                                                  NULL,
                                                  lookup_name,
                                                  NULL, NULL,
                                                  search_domain);

What exactly is this call doing, since none of the 3 callback functions is used?

This is slowing gdb down quite a lot if you have pending breakpoints, and are 
loading/unloading many shared libraries.

When I removed it, I couldn't see any different behavior (other than being faster).

I'm on Windows, specifically x86_64-w64-mingw32.


Regards
Hannes Domani