gcc/testsuite/gfortran.dg/streamio_13.f90

   1 ! { dg-do run }
   2 ! PR 34405 - BACKSPACE for unformatted stream files is prohibited.
   3 program main
   4   implicit none
   5   integer :: ios
   6   character(len=80) :: msg
   7   open(2003,form="unformatted",access="stream",status="scratch")
   8   write (2003) 1
   9   write (2003) 2
  10   ios = 0
  11   msg = ' '
  12   backspace (2003,iostat=ios,iomsg=msg)
  13   if (ios == 0 .or. msg /="Cannot BACKSPACE an unformatted stream file") &
  14        call abort
  15 end program main