[Bug libstdc++/43622] no C++ typeinfo for __float128 and __int128

[glisse at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43622

--- Comment #13 from Marc Glisse <glisse at gcc dot gnu.org> ---
It looks like emit_support_tinfos (rtti.c) should go through
registered_builtin_types (hidden in c-common.c) in addition to the hardcoded
fundamentals list.