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From: "Steven G. Kargl" <sgk@REMOVEtroutmask.apl.washington.edu>
Newsgroups: comp.lang.fortran
Subject: Re: writing a module file in gfortran 14
Date: Sat, 7 Dec 2024 05:42:20 -0000 (UTC)
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On Wed, 04 Dec 2024 20:11:34 +0000, Thomas Koenig wrote:

> Lynn McGuire <lynnmcguire5@gmail.com> schrieb:
>> Is the "implicit none" in the proper place in the following code ?
> 
> No.
> 

Technically, the answer is 'yes' to the question asked.

> 
> You want
> 
>>       module aaa_modules
>>
>>            implicit none
>>
>>            INTERFACE
>>              SUBROUTINE ABCPAR(ISW,IRETST,IR,IC,PAR,IPHASE)
>                  IMPLICIT NONE
> 
> ...
> 
> because declarations in the outer module have no meaning on
> interfaces.

This is the answer to the question you meant to ask.  An interface
construct introduces a new namespace and blocks host association.
As such, Fortran's implicit typing rules apply

-- 
steve