[Info-vax] Fortran

[Simon Clubley]

On 2018-12-05, Dave Froble <davef at tsoft-inc.com> wrote:
> On 12/5/2018 5:32 PM, Simon Clubley wrote:
>>
>> That's true, but the existing compilers are always supported for
>> a period after a new standard comes out. How long that period is
>> however, always depends on a variety of things.
>>
>
> Is it a new compiler, or enhancements to the existing compiler?
>
> If enhancements to an existing compiler, then back to the question, why 
> are some things being removed?
>

We are talking mainly about new compilers, such as (in the C world)
a transition from VAX C to DEC C to Clang.

However, for the example of an existing compiler, this could happen
if the existing compiler is enhanced to support a new version of the
language standard and you want to use the new features in your code.

In that case, when you change the version of the language standard
with a compiler flag, you may have to remove the features from your
code which were made obsolete in that version of the language before
you can compile your code against the new language standard.

Simon.

-- 
Simon Clubley, clubley at remove_me.eisner.decus.org-Earth.UFP
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