(j3.2006) request for interpretation

[Robert Corbett]

Robert Corbett wrote:
> Consider the following program
> 
>        MODULE M1
>          INTERFACE SUBR
>            MODULE PROCEDURE SUBR1
>          END INTERFACE
>        CONTAINS
>          SUBROUTINE SUBR1
>          END SUBROUTINE
>        END
> 
>        MODULE M2
>          INTERFACE SUBR
>            MODULE PROCEDURE SUBR2
>          END INTERFACE
>        CONTAINS
>          SUBROUTINE SUBR2
>          END SUBROUTINE
>        END
> 
>        PROGRAM MAIN
>          USE M1
>          CALL S
>        CONTAINS
>          SUBROUTINE S
>            USE M2
>            CALL SUBR
>          END SUBROUTINE
>        END
> 
> Is this program standard conforming?
> 
> The program appears to violate the restrictions set out
> in Section 16.2.3 of the Fortran 2003 standard.  It has
> been argued that Section 12.4.4.1 of the Fortran 2003
> standard modifies the requirements of Section 16.2.3.
> While that might have been what was intended, I do not
> see how the text of Section 12.4.4.1 has any effect on
> the requirements of Section 16.2.3.

For the record, I believe that the committee intended that
programs such as the one above should be allowed.  I don't
believe that Section 16.2.3 as it is currently written allows
them.  Section 16.2.3 should be amended.

Bob Corbett