[Bug c++/108223] GCC rejects QNaN in constant expressions

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108223

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
__builtin_fmax does not have to be a constant expression as it is an extension
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