[Bug libfortran/30162] New: I/O with named pipes does not work

["jvdelisle at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>]

Reduced test case frim Bud Davis

$ cat a.f
      integer status
      integer i
      open(unit=20,file='np',action='write',
     &     form='unformatted',iostat=status);
      print*,'status from open is ',status
      do i = 1,5
         write(20)i
      end do
      end



$ cat b.f
      integer status
      integer i
      integer val
      open(unit=21,file='np',action='read',
     &     form='unformatted',iostat=status);
      print*,'status from open is ',status
      do i = 1,5
         read(21)val
         print*,val
      end do



Here is what I get:

$ mkfifo np
$ ./b &
[1] 18730
$ ./a
 status from open is            0
At line 7 of file a.f
Fortran runtime error: Illegal seek
 status from open is            0
At line 8 of file b.f
Fortran runtime error: End of file


-- 
           Summary: I/O with named pipes does not work
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libfortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jvdelisle at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30162