[Bug ipa/64181] 'noexcept' on a lambda sometimes appears to get optimised away at -O2 (or above).

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64181

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #4)
> Seems to be fixed in GCC 10+.  It looks like GCC is handling volatile more
> correctly now.

Note I could only get the original testcase to show the issue not the others
ones.