[Bug fortran/21673] New: gfortran binary file format

[Bug fortran/21673] New: gfortran binary file format

[blime at cox dot net]

The way the binary record length is encoded appears to be changed
from g77 to gfortran.

  1.  Compatibility between gcc-3.x.x -  g77  and gcc-4.0 - gfortran
      -- not compatible and not a big problem, but don't know why it
      should change
  2.  Compatibility between gcc-3.x.x - cpp and g77 -- compatible.
  3.  Compatibility between gcc-4.0 - cpp and gfortran -- the problem

-- 
           Summary: gfortran binary file format
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: critical
          Priority: P1
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: blime at cox dot net
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21673

[Bug fortran/21673] gfortran binary file format

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-05-19 23:55 -------
Try looking at: <http://gcc.gnu.org/wiki/GfortranUnformattedSequentialIo>.
The record size is 64bit on all targets now unlike in g77 so it is binary compatiable to g77 on 64bit 
targets.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|critical                    |normal
           Priority|P1                          |P2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21673

[Bug fortran/21673] gfortran binary file format

[blime at cox dot net]

------- Additional Comments From blime at cox dot net  2005-05-20 00:58 -------
Subject: Re:  gfortran binary file format

Thanks for pointing me to the background. I searched, but used the wrong 
words.
I also recall something about 32 bit initial implementation for gfortran 
in  gcc-4.0, and
a record size of 64bit for all targets is counter to that idea.
What about compatability between gcc-4.0 - c++ and gfortran ? Are not 
c++ targets 32 bit?

blime

pinskia at gcc dot gnu dot org wrote:

>------- Additional Comments From pinskia at gcc dot gnu dot org  2005-05-19 23:55 -------
>Try looking at: <http://gcc.gnu.org/wiki/GfortranUnformattedSequentialIo>.
>The record size is 64bit on all targets now unlike in g77 so it is binary compatiable to g77 on 64bit 
>targets.
>
>  
>


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21673

[Bug fortran/21673] gfortran binary file format

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-05-21 13:52 -------


*** This bug has been marked as a duplicate of 19303 ***

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21673