[Bug bootstrap/78188] [7 Regression] AIX Bootstrap broken by tree-vrp.c change

[dje at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78188

--- Comment #19 from David Edelsohn <dje at gcc dot gnu.org> ---
I will try

      if (HAVE_COMDAT_GROUP)
        symbol->set_comdat_group (comdat_group);
      else      
        symbol->set_comdat_group (NULL);

in varasm.c:make_decl_one_only().