[Bug libstdc++/103382] condition_variable::wait() is not cancellable because it is marked noexcept

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103382

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The incorrect noexcept is fixed for GCC 12, but isn't suitable to backport.

For the branches we should consider disabling cancellation as suggested in
https://gcc.gnu.org/pipermail/gcc-patches/2021-December/586406.html