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!{ dg-do run }
! PR26464 File I/O error related to buffering and BACKSPACE
! Test case derived from case by Dale Ranta.
! Submitted by Jerry DeLisle <jvdelisle@gcc.gnu.org>
program test
integer,parameter :: datasize = 1000
dimension idata(datasize)
idata = -42
open (11, status="scratch", form="unformatted")
idata(1) = -1
idata( datasize) = -2
write(11)idata
idata(1) = -2
idata( datasize) = -3
write(11)idata
idata(1) = -3
idata( datasize) = -4
write(11)idata
idata(1) = -4
idata( datasize) = -5
write(11)idata
read(11,end= 1000 )idata
call abort()
1000 continue
backspace 11
backspace 11
backspace 11
read(11,end= 1001 )idata
if(idata(1).ne.-3 .or. idata(datasize).ne.-4) call abort()
stop
1001 continue
call abort()
1010 stop
end
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