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