[Bug c++/80059] [7 Regression] ICE with invalid noexcept for __transaction_atomic

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80059

--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Actually, it seems weird to call cxx_constant_value after
fold_non_dependent_expr has called maybe_constant_value.  :/