xmfree (objfile->md, s->line_charpos);
xfree (s->line_charpos);
forget_cached_source_info (void){  struct symtab *s;  struct objfile *objfile;  struct partial_symtab *pst;  for (objfile = object_files; objfile != NULL; objfile = objfile->next)    {      for (s = objfile->symtabs; s != NULL; s = s->next)	{	  if (s->line_charpos != NULL)	    {	      xmfree (objfile->md, s->line_charpos);	      s->line_charpos = NULL;	    }	  if (s->fullname != NULL)	    {	      xmfree (objfile->md, s->fullname);	      s->fullname = NULL;	    }	}      ALL_OBJFILE_PSYMTABS (objfile, pst)      {	if (pst->fullname != NULL)	  {	    xfree (pst->fullname);	    pst->fullname = NULL;	  }      }    }}