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From: "longb at cray dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/49693] Spurious "unused-variable" warnings for COMMON block module variables.
Date: Fri, 12 Aug 2011 19:39:00 -0000	[thread overview]
Message-ID: <bug-49693-4-sy5FIjUuER@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-49693-4@http.gcc.gnu.org/bugzilla/>

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49693

Bill Long <longb at cray dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |longb at cray dot com

--- Comment #1 from Bill Long <longb at cray dot com> 2011-08-12 19:22:50 UTC ---
Had a user support with similar issues when using the MPI module.  Test case:

module dmi_mpi_global
   use mpi
   implicit none
   private

   logical,            save, public :: debug_print
   integer(4),         save, public :: iu06
   integer(4),         save, public :: mpi_io_rank = 0
   character(LEN=256), save, public :: mpi_decomp_file = 'mpi_decompo.txt'
   public :: dmpi_close

contains

  subroutine dmpi_close ( flag )
     implicit none
     logical, intent(in) :: flag
     integer(4) :: ierr

     if (flag) then
       write(*,'(a19)') 'Time to die for MPI'
     else
       write(iu06,'(a19)') 'Time to die for MPI'
     endif

     if (.not.flag) close (iu06)

     call mpi_finalize(ierr)

   end subroutine dmpi_close
end module dmi_mpi_global


> ftn -c -Wall test.f90
test.f90:2:0: warning: 'mpi_bottom' defined but not used [-Wunused-variable]
test.f90:2:0: warning: 'mpi_in_place' defined but not used [-Wunused-variable]
test.f90:2:0: warning: 'mpi_status_ignore' defined but not used
[-Wunused-variable]
test.f90:2:0: warning: 'mpi_statuses_ignore' defined but not used
[-Wunused-variable]
test.f90:2:0: warning: 'mpi_errcodes_ignore' defined but not used
[-Wunused-variable]
test.f90:2:0: warning: 'mpi_unweighted' defined but not used
[-Wunused-variable]
test.f90:2:0: warning: 'mpi_argvs_null' defined but not used
[-Wunused-variable]
test.f90:2:0: warning: 'mpi_argv_null' defined but not used [-Wunused-variable]


  reply	other threads:[~2011-08-12 19:23 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-09 22:25 [Bug fortran/49693] New: " stephan.kramer at imperial dot ac.uk
2011-08-12 19:39 ` longb at cray dot com [this message]
2011-12-30  0:26 ` [Bug fortran/49693] " harald at klimachs dot de
2012-01-01 16:37 ` tkoenig at gcc dot gnu.org
2012-01-03 12:36 ` tkoenig at gcc dot gnu.org
2012-01-04 11:52 ` tkoenig at gcc dot gnu.org
2012-01-04 11:56 ` tkoenig at gcc dot gnu.org
2012-01-04 18:41 ` harald at klimachs dot de

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