[Bug libfortran/117857] libgfortran on powerpc-darwin8 doesn't compile: `-Wint-conversion` in `stream_ttyname`

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117857

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
https://gcc.gnu.org/legacy-ml/fortran/2011-01/msg00256.html

Why is autoconfig's AC_USE_SYSTEM_EXTENSIONS not working for darwin8 here? Or
is darwin8 just that broken. This was 13 years ago even.