[Bug libstdc++/100612] std::jthread can't be initialized with a pointer to a member function taking a std::stop_token

[jonathan.oconnor at protonmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100612

--- Comment #7 from Jonathan O'Connor <jonathan.oconnor at protonmail dot com> ---
libstdc++. Woops, apologies!

I feel somewhat vindicated by your non __STRICT_ANSI__ change!
I'll now go away and write the proposal. Thanks for the encouragement.