(j3.2006) (SC22WG5.5685) AW: RE: [ukfortran] F08/C201
Robert Corbett
robert.corbett
Wed Mar 16 08:04:06 EDT 2016
On 03/16/16 00:46, Bader, Reinhold wrote:
> Hi Erik,
>
> my impression is that C201 only closes a hole that would otherwise permit improper nesting of statements with respect to executable constructs, e.g.,
>
> block
> ...
> end subroutine
> end block
>
> Cheers
> Reinhold
>
You and Erik raise a fair point. Constraint C201 has the same effect on the
syntax as would be achieved by deleting the alternatives /end-function-stmt/,
/end-mp-subprogram-stmt/, /end-program-stmt/, and /end-subroutine-stmt/ from
rule R214 (rule R215 of 16-007), which is the syntax definition of an
/action-stmt/. I suspect that the intended purpose of including those
alternatives is to indicate that those forms of END statements are executable
constructs. That does not work, because none of the cases where one of those
forms of END statements is produced by the grammar are derived (indirectly) from
the syntax term /executable-construct/ because of the constraint.
Robert Corbett
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