[Bug libstdc++/102916] cmath constexpr can lead to ODR violations/incorrect results

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102916

--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Darrell Wright from comment #6)
> Right, mostly it can fall under as-if(if it wasn't explicitly disallowed)

Adding constexpr *is* explicitly disallowed though.