ISO/IEC JTC1/SC22/WG5-N2246


             WORK ITEMS FROM THE HYBRID WG5 MEETING
         HELD ON JUNE 28 TO 29, 2025 IN BERKELEY, CA, USA


This is the work item list for the next revision of ISO/IEC 1539:2023
Fortran, referred to as Fortran 202Y, as adopted by WG5 at its 2025 
meeting in Berkeley, California, USA. It incorporates changes made from
the previous list (N2234).

This list is subject to amendment by WG5. References are to ISO WG5
N-documents or INCITS/Fortran papers (yy-nnn), but please understand that
this work item list is for general concepts and that development of the
features will be done by INCITS/Fortran, and may or may not closely resemble
detailed descriptions in the referenced papers.

ACCEPTED

- JP01. Include generic subprograms described in N2217.
        Ref. N2217 "JP-01 Japan NB Request for F202Y - Generic Subprograms"
             24-148r1 "Revised formal specifications for generic subprogram"

- US01. Make default implicit typing obsolete.
        Ref. 23-177 "F202Y Obsolete default implicit typing"

- US02. Make the D format descriptor obsolete.
        Ref. 23-178 "F202Y Make the D format edit descriptor obsolescent"

- US03. Add note that the real model is not IEEE 754.
        Ref. 23-180 "F202Y Note that the real model is not IEEE 754"

- US04. Add non-blocking collective subroutines - other aspects of US04
        (asynchronous tasks) are deferred to the following revision.
        Ref: N2245 "Non-blocking Collective Subroutines"

- US05. Add C interoperability for new interchange floating point types in C.
        Ref. 23-176 "C interoperability for new interchange floating-point types"

- US06. Provide a mechanism to specify global binding name for non
        C-interoperable.
        Ref. 23-201 "F202Y Global binding name for non C-interoperable"

- US07. Improve rank-independent functionality.
        Ref. 23-184r1 for a list of proposals under consideration.

- US08. Improve polymorphic PURE function results.
        Ref. 25-153r1 "Polymorphic PURE function results"

- US09. Allow I/O on enumeration type values.
        Ref. 23-151r1 "F202Y Allow I/O of enumeration type names"

- US10. Add a Fortran-friendly preprocessor.
        Ref. 25-142r2 "Formal specifications for the Fortran preprocessor (FPP)"

- US11. Provide intrinsics for source location.
        Ref. 23-193r1 "F202Y Intrinsics for source location".

- US12. Add maximum rank/corank constants to ISO_FORTRAN_ENV.
        Ref. 23-194 "F202Y Add maximum rank/corank constants to ISO_FORTRAN_ENV"

- US13. Add namespace-like access to module entities.
        Ref. 23-196 "Access to module entities"

- US14. Add scoped access to enumeration values.
        Ref. 23-197 "Scoped access to enumeration enumerators"

- US15. Add support for describing the target of a pointer as immutable.
        Ref. 23-198 "Readonly pointers"

- US16. Define default KIND values to use throughout a program unit.
        Ref. 23-199 "Default kinds"

- US17. Add Generic programming templates, including strong requirements.
        Investigate other mechanisms for simplifying the use of templates.
        Ref: 23-155r1 "Formal syntax for generics"
             23-182r1 "Expanded Requirements"
             23-187 "Shorthands for Simple Templates"
             23-189 "F202Y allow polymorphic deferred type"
             23-190 "Properties for requirements"
             24-125r5 "Formal syntax (1 of 3): deferred arguments"
             24-126r4 "Formal syntax (2 of 3): templates and instantiation"
             24-127r4 "Formal syntax (3 of 3): REQUIREMENT and REQUIRES"
             24-130 "Formal specs for TEMPLATE"
             24-131 "Generics formal specs: semantics of instantiating templates"
             24-133 "Formal specs for REQUIREMENT and REQUIRES"

- US18. Allow Polymorphism in Coarrays
        Ref: 23-217 "Usable Polymorphism in Coarrays"

- US19. Add more math functions from IEEE-754
        Ref: 25-143 "Reqs/specs for additional IEEE-754 math functions"

- US20. Add Collective subroutines for prefix operations
        Ref: 25-144r1.txt "Requirements for collective subroutines for prefix operations"

- US23/DIN4 Add generic processing of assumed-rank object
        Ref: 24-136r1 "DIN-4: Generic processing of assumed-rank objects"

- US24  Add rank-independent looping
        Ref: See 24-143 "Rank-independent looping"

- US25  Add ability to interpret complex as real and vice versa
        Ref: 24-129 "allow complex pointer to reals and vice versa"

- DIN1  Add execution of collective procedures on a specified team
        Ref: 25-127r1 "Collectives over a specified team"

- DIN3a Add support for atomic operations in local memory
        Ref: N2230 "DIN Suggestions for F202Y" (other features requested
        in DIN3 were not accepted.)

REMOVED

WG5 voted to remove US22/DIN2 from the work item list for this revision.

- US22/DIN2 Add unions in interoperable derived types
        Ref: 24-117 Unions in interoperable derived types