[Bug fortran/35865] New: Spurious warning for vector-valued functions passed as arguments

[Bug fortran/35865] New: Spurious warning for vector-valued functions passed as arguments

[john dot young at jrc dot co dot jp]

In the code below, the following warning is produced

"Waring: Actual argument contains too few elements for dummy argument 'func'
(1/3) at (1)"

If the function result is changed to a scalar instead of a vector, no warning
is produced.  I do not know the standard well enough to know if this is a
problem, but other compilers (G95,Intel) do not produce a warning.  The
function arguments do match however.  I obtained this from "GCC 4.3.0 20080212
(experimental) [trunk revision 132252]" using cygwin under WinXP.


!===============================================
module vec_func
implicit none

contains
!===============================================
!===============================================
!function vector_func(func,r1) result(res)
function vector_func(func) result(res)
implicit none

interface
  function func(r) result(res)
  implicit none
  real, intent(in) :: r
  real :: res(3)
  end function func
end interface

real :: res(3)

  res = func(0.)

end function vector_func
!==============================
function test_func(r) result(res)
implicit none

real,intent(in) :: r
real :: res(3)

  res = r

end function test_func
!=========================================
end module vec_func
!=========================================
program a
use vec_func
implicit none

real :: z(3)

  z = vector_func(test_func)
  print*, z

end program a
!=========================================


-- 
           Summary: Spurious warning for vector-valued functions passed as
                    arguments
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: minor
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: john dot young at jrc dot co dot jp
GCC target triplet: i686-pc-cygwin


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35865

[Bug fortran/35865] Spurious warning for vector-valued functions passed as arguments

[john dot young at jrc dot co dot jp]

------- Comment #1 from john dot young at jrc dot co dot jp  2008-04-08 01:42 -------
Created an attachment (id=15444)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=15444&action=view)
code to produce spurious warning described in bug report


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35865

[Bug fortran/35865] Spurious warning for vector-valued functions passed as arguments

[burnus at gcc dot gnu dot org]

------- Comment #2 from burnus at gcc dot gnu dot org  2008-04-08 09:20 -------
Confirm. Something really goes wrong here, but fortunately it is only a warning
and not an (invalid) error message.


-- 

burnus at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
           Keywords|                            |diagnostic
   Last reconfirmed|0000-00-00 00:00:00         |2008-04-08 09:20:45
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35865

[Bug fortran/35865] Spurious warning for vector-valued functions passed as arguments

[fxcoudert at gcc dot gnu dot org]

------- Comment #3 from fxcoudert at gcc dot gnu dot org  2009-03-28 12:35 -------
The warning has disappeared in 4.3.2, the 4.4 branch and trunk, at least on
x64_64-linux; because I doubt it's cygwin-related, I close this report for now,
please feel free to reopen it with any additional info if I'm wrong.


-- 

fxcoudert at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |fxcoudert at gcc dot gnu dot
                   |                            |org
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.3.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35865