https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79879
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Lukas Wyporek from comment #3) > >> Cygwin uses newlib and not MSVCRT. > > So why this bug is present also on Cygwin GCC? > Newlib is also buggy? Report it to them and find out. I don't know.