Re: Elfutils: Resolving class member variables (was Re: Dwarf/libdw question)

[Sami Wagiaalla <swagiaal@redhat.com>]

Sami Wagiaalla wrote:
> Hi Roland,
>
> Thank you for the thorough reply. You have probably answered any 
> future questions I might have :)
>
> Roland McGrath wrote:
>> Hi Sami.  Please use more specific Subject lines in your postings.
>> Reading the list archives' index will not be very informative to
>> someone looking years from now for discussion on this particular topic.
>>   
> Good point... will do.
>> First, the name resolution per se.  First there are scopes inside a
>> subprogram DIE, same as in C.  When you are dealing with a class method,
>> the subprogram's specification attribute gives you the declaration
>> inside the class scope (use dwarf_formref_die (dwarf_attr (...))).  Then
>> use dwarf_getscopes_die on that to see the class, namespace, etc. scopes
>> containing it.  For each of those, see if they have DW_TAG_inheritance,
>> DW_TAG_imported_declaration, etc. children that contribute more scopes
>> to the name resolution logic for the language.  Among those you find a
>> member, variable, subprogram, etc. DIE by the name you are looking for.
>>   
> I will try that.
This works, but the following patch was needed:

Index: libdw/libdw_visit_scopes.c
===================================================================
RCS file: /cvs/frysk/frysk-imports/elfutils/libdw/libdw_visit_scopes.c,v
retrieving revision 1.4
diff -u -r1.4 libdw_visit_scopes.c
--- libdw/libdw_visit_scopes.c  22 Aug 2007 17:11:08 -0000      1.4
+++ libdw/libdw_visit_scopes.c  2 Oct 2007 19:55:06 -0000
@@ -68,6 +68,7 @@
     case DW_TAG_catch_block:
     case DW_TAG_try_block:
     case DW_TAG_entry_point:
+  case DW_TAG_structure_type:
       return match;
     case DW_TAG_inlined_subroutine:
       return match_inline;