[Bug debug/51650] [4.7 regression] LTO ICE in dwarf2out_finish, at dwarf2out.c:22501 while building libxul

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51650

--- Comment #21 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-02 
15:52:45 UTC ---
(In reply to comment #20)
> 
> Fortunately it seems that this bug was the last issue that needed to be fixed.
> Firefox now builds fine with -lto and -g.

Can you also check the following variant?

Index: gcc/dwarf2out.c
===================================================================
--- gcc/dwarf2out.c     (revision 182784)
+++ gcc/dwarf2out.c     (working copy)
@@ -22501,15 +22501,8 @@ dwarf2out_finish (const char *filename)
              else if (TYPE_P (node->created_for))
                context = TYPE_CONTEXT (node->created_for);

-             gcc_assert (context
-                         && (TREE_CODE (context) == FUNCTION_DECL
-                             || TREE_CODE (context) == NAMESPACE_DECL));
-
-             origin = lookup_decl_die (context);
-             if (origin)
-               add_child_die (origin, die);
-             else
-               add_child_die (comp_unit_die (), die);
+             origin = get_context_die (context);
+             add_child_die (origin, die);
            }
        }
     }