[Bug fortran/55099] New: Surprising 'PROCEDURE attribute conflicts with INTENT attribute' error

[Bug fortran/55099] New: Surprising 'PROCEDURE attribute conflicts with INTENT attribute' error

[Joost.VandeVondele at mat dot ethz.ch]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55099

             Bug #: 55099
           Summary: Surprising 'PROCEDURE attribute conflicts with INTENT
                    attribute' error
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: Joost.VandeVondele@mat.ethz.ch


In the following, a surprising (but correct) error message is issued. Maybe it
is possible to improve the wording to point at the other option... looking at
ifort's error message is cheating ;-) but certainly that one helps the
non-expert.

SUBROUTINE S(num_proc_2d)
  INTEGER, INTENT(IN) :: num_proc_2d
  INTEGER :: proc_x,proc_y
  proc_x=num_proc_2d(1) ; proc_x=num_proc_2d(2)
END SUBROUTINE

Error message:

SUBROUTINE S(num_proc_2d)
                        1
Error: PROCEDURE attribute conflicts with INTENT attribute in 'num_proc_2d' at
(1)

[Bug fortran/55099] Surprising but valid 'PROCEDURE attribute conflicts with INTENT attribute' error

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55099

Tobias Burnus <burnus at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |diagnostic
                 CC|                            |burnus at gcc dot gnu.org
            Summary|Surprising 'PROCEDURE       |Surprising but valid
                   |attribute conflicts with    |'PROCEDURE attribute
                   |INTENT attribute' error     |conflicts with INTENT
                   |                            |attribute' error

--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> 2012-10-27 17:29:00 UTC ---
I don't know whether you'd prefer NAG's message: "Inconsistent usage of
NUM_PROC_2D". Nor I am not sure that Intel's message is much better than
gfortran's or NAG's: "This name has not been declared as an array or a
function."

How about the following (which of course implies that the users didn't intent
to use an array - if they did, Intel's becomes more helpful.)

PathScale/Oracles/Open64/Crayftn have: "NUM_PROC_2D" has the INTENT attribute,
therefore it must not be used as an external function name.

PGI has "Illegal attribute - intent specified for dummy subprogram argument
num_proc_2d"

[Bug fortran/55099] Surprising but valid 'PROCEDURE attribute conflicts with INTENT attribute' error

[Joost.VandeVondele at mat dot ethz.ch]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55099

Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |Joost.VandeVondele at mat
                   |                            |dot ethz.ch

--- Comment #2 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> 2012-10-27 17:38:34 UTC ---
(In reply to comment #1)

> How about the following (which of course implies that the users didn't intent
> to use an array - if they did, Intel's becomes more helpful.)

Indeed, I was coding this with the intent of declaring it as an array, no
doubt, passing an array is much more common than passing a procedure. Note that
intel's location is also more useful in that case. I think the usefulness of
Intel's message lies in the fact that it suggests the common cause of the
error. Even with the experience I have, I first started to look for a procedure
with the same name as the variable.

[Bug fortran/55099] Surprising but valid 'PROCEDURE attribute conflicts with INTENT attribute' error

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55099

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-01-18
     Ever confirmed|0                           |1

--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Still present at r206753.