https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86367
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |rguenth at gcc dot gnu.org --- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> --- FRE uses native_encode_real / native_interpret_int to read the NAN as integer. I suspect that something goes wrong with native_encode_real here or in real_to_target which is used by that function.