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

[glisse at gcc dot gnu.org]

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

--- Comment #19 from Marc Glisse <glisse at gcc dot gnu.org> ---
Created attachment 32654
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32654&action=edit
potential export fix

I am currently testing the attached.