[Bug libstdc++/64276] would be better to use __cpp_exceptions rather than __EXCEPTIONS to determine whether exceptions are available

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64276

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I don't think it matters as libstdc++ is only designed to be compiled with gcc.
In fact if used with another compiler, the runtime exception no longer applies.