http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58625
--- Comment #6 from Oleg Endo <olegendo at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #5)
> Some builtins are type generic, meaning that you can use just the non-{l,f}
> suffixed variant always, but __builtin_signbit isn't among them.
Yep. So libstdc++-v3/include/c_std/cmath (signbit) would require a fix, too in
this case, right? Or maybe rather make the signbit builtin type generic?
