ISO/IEC JTC1/SC22/WG5-N2234


             WORK ITEMS FROM THE HYBRID WG5 MEETING
         HELD ON JUNE 27 TO 28, 2024 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 2024 
meeting in Berkeley, California, USA. It incorporates items (through US17)
previously adopted as set out in N2222.

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. 12-178 "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 asynchronous tasks.
        Ref: 23-174 "Asynchronous Tasks in Fortran"

- 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. 23-186 "Polymorphic outputs from pure"

- 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. 23-192r1 "F202Y Define a standard Fortran preprocessor"

- 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: 23-234r2 "IEEE-754 Recommended Math Functions"

- 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"

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

CONDITIONALLY ACCEPTED

The following features received mixed support at the 2024 WG5 meeting.
Further discussion by INCITS/Fortran in October 2024 will inform a WG5
letter ballot in November 2024 as to whether to keep any or all of these
features on the work item list.

- US20  Add SCAN and CO_SCAN
        Ref: 23-235r2 "SCAN and CO_SCAN"

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

- DIN1  Add execution of collective procedures on a specified team
        Ref: N2230 "DIN Suggestions for F202Y"