[Bug libstdc++/111824] [14 Regression] is invalid under -U__STRICT_ANSI__ -std=c++11

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111824

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
DO. NOT. DO. THIS.