AUTOMATIC keyword

[Janus Weil]

Hi Mark,

> I have been working on adding the 'automatic' keyword as a declaration
> opposite to 'save'. This would obviously have no effect except when using
> --fno-automatic and wouldn't be allowed with the 'save' keyword.
>
> Unfortunately --fno-automatic is at the moment implemented using
> max-stack-var-size=0, so this would have to be re-implemented to allow
> variables to go back on the stack.
>
> Does this sound like a good idea? Is there any support for adding the
> 'automatic' keyword as a feature of gfortran?

a few questions to evaluate the usefulness of your proposal:

1) Is the AUTOMATIC keyword part of any official Fortran standard?
(Note that gfortran people usually less fond of implementing
non-standard stuff. The main focus of the current development efforts
is certainly to implement all aspects of the F03 and F08 standards,
which is hard enough as it is.)

2) Is it implemented in any other compilers? (A quick web search seems
to suggest that it is supported at least by Intel, Sun/Oracle and f2c
...)

Cheers,
Janus