[Bug libfortran/83168] FAIL: gfortran.dg/fmt_f0_2.f90 with a sanitized libgfortran

[schwab@linux-m68k.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83168

--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> ---
The first byte just outside the valid range.