[Bug libstdc++/105562] std::function<bool(char)>::_M_invoker may be used uninitialized in std::regex move with -fno-strict-aliasing

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105562

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Looks like it started with r11-2238