[Bug libstdc++/105562] std::function::_M_invoker may be used uninitialized in std::regex move with -fno-strict-aliasing

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

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

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Created attachment 52953
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52953&action=edit
Precompiled testcase

This .ii is based on the gcc-12 code, but with some tweaks to compile with
gcc-10.