https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110311
--- Comment #42 from Jürgen Reuter <juergen.reuter at desy dot de> --- (In reply to Jakub Jelinek from comment #41) > > 0xffff0000000004f5dc90 is pseudo NaN: > Pseudo Not a Number. The sign bit is meaningless. The 8087 and 80287 treat > this as a Signaling Not a Number. The 80387 and later treat this as an > invalid operand. > So, if that comes from some random number generator, I'd say that random > number generator should be fixed not to create the erroneous cases for > https://en.wikipedia.org/wiki/Extended_precision Hm, the example provided does not use extended precision.
