[Bug fortran/66461] [4.9/5/6 Regression] ICE on missing end program in fixed source

[jvdelisle at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66461

--- Comment #6 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Hiesenbug. Steves fix, probably on BSD, does not work on linux. Some of my
attempts work when running within the debugger, but do not work outside the
debugger. I have traced through the scanner with and without the END statement
and see nothing yet.

We might try a regression hunt to see where it broke to get a hint. One thing I
have not checked yet is in fixed form we skip past the first characters of each
line.  We may need to trap an EOF when we are doing that skipping.