Obsolescent Language Features in Fortran 2003 and Fortran 95

Some language features, considered redundant in Fortran 90 are identified as obsolescent in Fortran 2003 and Fortran 95.

Intel® Fortran flags these features if you specify compiler option stand.

Other methods are suggested to achieve the functionality of the following obsolescent features:

Alternate returns (labels in an argument list)

To replace this functionality, it is recommended that you use an integer variable to return a value to the calling program, and let the calling program use a CASE construct to test the value and perform operations.
Arithmetic IF

To replace this functionality, it is recommended that you use an IF statement or construct.
Assumed-length character functions

To replace this functionality, it is recommended that you use one of the following:
- An automatic character-length function, where the length of the function result is declared in a specification expression
- A subroutine whose arguments correspond to the function result and the function arguments
Dummy arguments of a function can still have assumed character length; this feature is not obsolescent.
CHARACTER*(*) form of CHARACTER declaration

To replace this functionality, it is recommended that you use the Fortran 90 forms of specifying a length selector in CHARACTER declarations (see Declaration Statements for Character Types).
Computed GO TO statement

To replace this functionality, it is recommended that you use a CASE construct.
DATA statements among executable statements

This functionality has been included since FORTRAN 66, but is considered to be a potential source of errors.
Fixed source form

Newer methods of entering data have made this source form obsolescent and error-prone.

The recommended method for coding is to use free source form.
Shared DO termination and termination on a statement other than END DO or CONTINUE

To replace this functionality, it is recommended that you use an END DO statement (see Forms for DO Constructs) or a CONTINUE statement.
Statement functions

To replace this functionality, it is recommended that you use an internal function.