https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126695
--- Comment #1 from Joseph S. Myers <jsm28 at gcc dot gnu.org> --- Not valid with -fsignaling-nans (if x is sNaN and y is infinite, the nested call returns y but non-nested returns qNaN; this is essentially why IEEE 754-2019 introduced new max/min operations, which bind to different functions that are new in C23 rather than the older fmax / fmin).
