[Bug middle-end/98829] Different results with -O3 and custom quiet NaN

[gnu at nemanjaboric dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98829

--- Comment #3 from Nemanja Boric <gnu at nemanjaboric dot com> ---
Changing:

    static constexpr std::uint64_t kMagicNumber = 1730;
    static constexpr std::uint64_t kCustomNaN = 0x7ff0000000000000 |
kMagicNumber;

to

    static inline std::uint64_t kMagicNumber = 1730;
    static inline std::uint64_t kCustomNaN = 0x7ff0000000000000 | kMagicNumber;

also avoids the issue.