gcc/testsuite/gfortran.dg/write_rewind_2.f

   1 ! { dg-do run }
   2 ! PR 26499  Test write with rewind sequences to make sure buffering and
   3 ! end-of-file conditions are handled correctly.  Derived from test case by Dale
   4 ! Ranta.  Submitted by Jerry DeLisle <jvdelisle@gcc.gnu.org>.
   5       program test
   6       dimension idata(1011)
   7       idata = -42
   8       open(unit=11,form='unformatted')
   9         idata(1)   = -705
  10         idata(  1011)   = -706
  11        write(11)idata
  12         idata(1)   = -706
  13         idata(  1011)   = -707
  14        write(11)idata
  15         idata(1)   = -707
  16         idata(  1011)   = -708
  17        write(11)idata
  18        read(11,end=        1000 )idata
  19        STOP 1
  20  1000  continue
  21        rewind 11
  22        read(11,end=        1001 )idata
  23         if(idata(1).ne. -705.or.idata(  1011).ne. -706)STOP 2
  24  1001  continue
  25        close(11,status='keep')
  26       open(unit=11,form='unformatted')
  27       rewind 11
  28       read(11)idata
  29       if(idata(1).ne.-705)then
  30       STOP 3
  31       endif
  32       read(11)idata
  33       if(idata(1).ne.-706)then
  34       STOP 4
  35       endif
  36       read(11)idata
  37       if(idata(1).ne.-707)then
  38       STOP 5
  39       endif
  40       close(11,status='delete')
  41       stop
  42       end
  43
  44