https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83286
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target| |mingw64 --- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> --- Illegal instruction is usually coming from gmp/mpfr which might be linked statically into your GCC binary on mingw.