https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81327
--- Comment #13 from Ville Voutilainen <ville.voutilainen at gmail dot com> --- I understand that, but considering that I plan to convince the committee that the bit-blasts like Qt does should be well-defined, the warning is a bit eager, cast or no cast. And since it does break existing users, I would prefer having the warning be an opt-in rather than opt-out.