[Bug libstdc++/125565] std::enable_shared_from_this::_M_weak_this not reset before calling deleter

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125565

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Tomasz Kamiński from comment #1)
> This is why all standard libraries agree on current behavior:
> https://godbolt.org/z/9nefhhEjv.

And boost::enable_shared_from_this as well.