(j3.2006) (SC22WG5.5101) [ukfortran] WG5 letter ballot 7 on Fortran 2008 interpretations
Sun Oct 20 22:19:29 EDT 2013
Nick Maclaren writes:
>My vote is "no" solely because this seems to assume the POSIX view of
>error status without specifying it. For example, VMS (which is still
>twitching) uses a different conventions, and zOS is also slightly
>different. Prepending some description like this to NOTE 2.6a would
>change my vote:
> In the recommendations for a program exit status, it is
> assumed that it is an integer with zero indicating success;
> processors that use other conventions should interpret the
> recommendations accordingly.
This is already assumed by the current text specifying a zero return value for
plain STOP, i.e. although in principle I agree that the status return values
could be better-specified, this interp is really only about the inconsistent way
we went about it.
>My vote is "no" solely because this makes a statement about C that
>cannot be unambiguously deduced from normative text in the C standard,
Presumably "C does not have arrays that are passed by value". Since the
normative text in the C standard turns array dummies into pointers (and I don't
care which translation phase or whatever it happens in), I see nothing
controversial about this very straightforward response.
The C standard actually says:
"A parameter declared to have array or function type is adjusted to have a
pointer type as described in 6.9.1.",
which further redirects to 220.127.116.11, which says
"A declaration of a parameter as ??array of type?? shall be adjusted to
??qualified pointer to type??, where the type qualifiers (if any) are those
specified within the [ and ] of the array type derivation.".
I don't see any deduction needed to understand that array arguments are
On the face of it, "C does not have arrays that are passed by value" is
falsifiable via counter-example, so if Nick disputes that then let's see a
counter-example. With no counter-example, an argument that the words don't mean
that arrays are passed as a pointer to the first element (as described) is
................................Malcolm Cohen, Nihon NAG, Tokyo.
More information about the J3