https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57979
--- Comment #5 from Ville Voutilainen <ville.voutilainen at gmail dot com> --- I think this should be put on hold, since EWG told CWG in Rapperswil that const floats should perform the same magic as const ints do, see http://open-std.org/JTC1/SC22/WG21/docs/cwg_closed.html#1826 which EWG suggested CWG to reopen and resolve.