[Bug libfortran/25139] [4.1/4.2 regression] "Invalid argument" error on I/O

[dir at lanl dot gov]

------- Comment #9 from dir at lanl dot gov  2005-12-13 14:39 -------
I generated random I/O sequences doing 100,000 tests at each I/O operation
count staring at five here is the shortest one to fail (somewhere in the
eights) -

[dranta:~/tests/gfortran-D] dir% gfortran -o write10 write10.f
[dranta:~/tests/gfortran-D] dir% write10
At line 18 of file write10.f
Fortran runtime error: Invalid argument
[dranta:~/tests/gfortran-D] dir% cat write10.f
      integer :: i = 1
      dimension data(500)
      do 10 i=1,500
      data(i)=i
   10 continue
      open(unit=11,status='scratch',form='unformatted')
       write(11)data
       write(11)data
       rewind 11
       write(11)data
       backspace 11
       read(11,end=        1000 )data
 1000  continue
       read(11,end=        1001 )data
 1001  continue
       backspace 11
       backspace 11
       backspace 11
      close(11)
      end


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25139