[Bug c++/49538] Revision 175341 causes segfaults

[markus at trippelsdorf dot de]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49538

--- Comment #3 from Markus Trippelsdorf <markus at trippelsdorf dot de> 
2011-06-28 20:32:14 UTC ---
Haha, that patch doesn't work. It's identical to:

#if 0
      if (!in_charge_parm_used
      && fns[0]
      && idx == 1
      && !flag_use_repository
      && DECL_INTERFACE_KNOWN (fns[0])
      && (SUPPORTS_ONE_ONLY || !DECL_WEAK (fns[0]))
      && (!DECL_ONE_ONLY (fns[0])
          || (HAVE_COMDAT_GROUP
          && DECL_WEAK (fns[0])))
      && (flag_syntax_only
          /* Set linkage flags appropriately before
         cgraph_create_function_alias looks at them.  */
          && (expand_or_defer_fn_1 (clone)
          || cgraph_same_body_alias (cgraph_get_node (fns[0]),
                         clone, fns[0]))))
    {
      alias = true;
      if (DECL_ONE_ONLY (fns[0]))
        {
          /* For comdat base and complete cdtors put them
         into the same, *[CD]5* comdat group instead of
         *[CD][12]*.  */
          comdat_group = cdtor_comdat_group (fns[1], fns[0]);
          DECL_COMDAT_GROUP (fns[0]) = comdat_group;
        }
    }
#endif

So back to square one. But everything points to commit c70f46b057cd12973:

Author: hubicka 
Date:   Sat Jun 11 13:01:53 2011 +0000

        * lto-symtab.c (lto_cgraph_replace_node): Kill same body alias code.
        (lto_symtab_resolve_can_prevail_p): Likewise.
...