(g77.info)Standard Support

ANSI FORTRAN 77 Standard Support
================================

   GNU Fortran supports ANSI FORTRAN 77 with the following caveats.  In
summary, the only ANSI FORTRAN 77 features `g77' doesn't support are
those that are probably rarely used in actual code, some of which are
explicitly disallowed by the Fortran 90 standard.



* No Passing External Assumed-length
CHAR*(*) CFUNC restriction.
* No Passing Dummy Assumed-length
CHAR*(*) CFUNC restriction.
* No Pathological Implied-DO
No `((..., I=...), I=...)'.
* No Useless Implied-DO
No `(A, I=1, 1)'.