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Date: Tue, 08 Apr 2008 01:41:00 -0000
Subject: [Bug fortran/35865]  New: Spurious warning for vector-valued functions passed as arguments
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From: "john dot young at jrc dot co dot jp" <gcc-bugzilla@gcc.gnu.org>
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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