[Bug lto/46525] [4.6 Regression] Failed to bootstrap-lto

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46525

--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-11-18 
11:16:35 UTC ---
Hm.  We have

  t (leader)  ->  main-variant (but t is its leader)

so we violated

  /* Always register the main variant first.  This is important so we
     pick up the non-typedef variants as canonical, otherwise we'll end
     up taking typedef ids for structure tags during comparison.  */
  if (TYPE_MAIN_VARIANT (t) != t)
    gimple_register_type (TYPE_MAIN_VARIANT (t));

somehow.  This results in endless recursion between the two fns.

I have a patch.