[Bug fortran/49597] New: gfortran namelist read bug

[Bug fortran/49597] New: gfortran namelist read bug

[david.sagan at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49597

           Summary: gfortran namelist read bug
           Product: gcc
           Version: 4.5.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: david.sagan@gmail.com


Test program is:

program the_bug

implicit none

type example_struct
  logical logic
end type example_struct

integer readstatus
type(example_struct) fzz(3)
namelist /parameters/ fzz
!
open (unit= 10,file='the_bug.in')
read(10, nml = parameters,iostat=readstatus)
write(*,*) "iostat = ", readstatus
end program the_bug


Input file "the_bug.in" is:

&parameters 
fzz(1)%logic = .true.
fzz(2)%logic = .true.
/

bla bla bla


Running gives:

/lnx4103:~/dcs/bmad_distribution/test> gfortran --version
GNU Fortran (GCC) 4.5.1
Copyright (C) 2010 Free Software Foundation, Inc.

GNU Fortran comes with NO WARRANTY, to the extent permitted by law.
You may redistribute copies of GNU Fortran
under the terms of the GNU General Public License.
For more information about these matters, see the file named COPYING

lnx4103:~/dcs/bmad_distribution/test> gfortran test.f90 ; ./a.out
 iostat =         5010


iostat should be 0. 
If you delete the "bla bla bla" line you get iostat = -1. 
If you change the name of the variable from "fzz" to, say, "zz" (2 places in
the program and 2 places in the_bug.in) you get iostat as 0 as it should be.
I have not tried extensively to test this but variable names beginning with "t"
and variable names beginning with "f" show the bug and other names do not.

[Bug fortran/49597] gfortran namelist read bug

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49597

--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-06-30 19:31:46 UTC ---
I see 'iostat = 5010' with gcc version 4.5.0 20100404 (experimental) [trunk
revision 157958] (GCC), but not (i.e., iostat = 0) with versions 4.4.6, 4.5.2
20101122 (prerelease) [gcc-4_5-branch revision 167027], 4.5.3, 4.6.0 20100413
(experimental) [trunk revision 158252], nor with 4.7.0 (trunk).

AFAICT this has been fixed and you should try a more recent version.

[Bug fortran/49597] gfortran namelist read bug

[jvdelisle at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49597

Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jvdelisle at gcc dot
                   |                            |gnu.org
         AssignedTo|unassigned at gcc dot       |jvdelisle at gcc dot
                   |gnu.org                     |gnu.org

--- Comment #2 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> 2011-07-26 20:59:04 UTC ---
I will tke this one.

[Bug fortran/49597] gfortran namelist read bug

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49597

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |burnus at gcc dot gnu.org
      Known to work|                            |4.4.6, 4.5.2, 4.6.0, 4.7.0
      Known to fail|                            |4.1.2, 4.5.1

--- Comment #3 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-07-27 07:05:22 UTC ---
(In reply to comment #2)
> I will tke this one.

Jerry: Judging from comment 1, it is already fixed for 4.4, 4.5 and 4.6/4.7.
Thus, I think no action is required.

David: Thanks for the bugreport. Can you try a newer version of gfortran? Your
Linux distribution might offer a new release (4.5.2 seems to be sufficient) -
alternatively, you could try the ones at
http://gcc.gnu.org/wiki/GFortranBinaries

[Bug fortran/49597] gfortran namelist read bug

[david.sagan at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49597

--- Comment #4 from david.sagan at gmail dot com 2011-07-27 13:43:18 UTC ---
Yes a later version does not show the bug. Much thanks.

-- David


(In reply to comment #3)
> (In reply to comment #2)
> > I will tke this one.
> 
> Jerry: Judging from comment 1, it is already fixed for 4.4, 4.5 and 4.6/4.7.
> Thus, I think no action is required.
> 
> David: Thanks for the bugreport. Can you try a newer version of gfortran? Your
> Linux distribution might offer a new release (4.5.2 seems to be sufficient) -
> alternatively, you could try the ones at
> http://gcc.gnu.org/wiki/GFortranBinaries

[Bug fortran/49597] gfortran namelist read bug

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49597

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED

--- Comment #5 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-07-27 14:17:11 UTC ---
(In reply to comment #4)
> Yes a later version does not show the bug. Much thanks.

Thanks for the confirmation.

(I have now closed the bug as FIXED.)