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Nested modules

 
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jlb



Joined: 21 Oct 2020
Posts: 75

PostPosted: Thu Oct 17, 2024 9:58 pm    Post subject: Nested modules Reply with quote

I cannot understand why the intrinsic function COMPILER_VERSION cannot be accessed from the main program through the nested modules MOD1 and MOD2, but the function DBL can. The compiler warns with
Quote:
warning 1259 - COMPILER_VERSION is a standard intrinsic that requires USE ISO_FORTRAN_ENV.

I must be overlooking something trivial.
Code:
MODULE MOD1
USE ISO_FORTRAN_ENV
IMPLICIT NONE
INTEGER, PARAMETER :: M1=1
CONTAINS
INTEGER FUNCTION DBL(X)
  IMPLICIT NONE
  INTEGER, INTENT(IN) :: X
  DBL=2*X
END FUNCTION DBL
END MODULE MOD1

MODULE MOD2
USE MOD1
IMPLICIT NONE
INTEGER, PARAMETER :: M2=2
END MODULE MOD2

PROGRAM MODTEST
USE MOD2
IMPLICIT NONE
WRITE(*,*) 'Version : ', COMPILER_VERSION()
WRITE(*,*) M1, M2, DBL(3)
END PROGRAM MODTEST


Last edited by jlb on Fri Oct 18, 2024 6:35 pm; edited 1 time in total
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PaulLaidler
Site Admin


Joined: 21 Feb 2005
Posts: 8062
Location: Salford, UK

PostPosted: Fri Oct 18, 2024 7:25 am    Post subject: Reply with quote

jlb

Your code exposes a bug in FTN95.
For the time being it is necessary to move USE ISO_FORTRAN_ENV to the main program or, in general, to the subprogram that calls COMPILER_VERSION().
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jlb



Joined: 21 Oct 2020
Posts: 75

PostPosted: Fri Oct 18, 2024 6:34 pm    Post subject: Reply with quote

Paul
Thank you for your usual prompt and and enlightening reply.
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