! { dg-do run }
! { dg-options "-frecord-marker=4" }
! This file is all about BACKSPACE
! Adapted from gfortran.dg/backspace.f
integer i, n, nr
real x(10), y(10)
! PR libfortran/20068
open (20, status='scratch')
write (20,*) 1
write (20,*) 2
write (20,*) 3
rewind (20)
read (20,*) i
if (i .ne. 1) call abort
backspace (20)
read (20,*) i
if (i .ne. 1) call abort
close (20)
! PR libfortran/20125
open (20, status='scratch')
write (20,*) 7
backspace (20)
read (20,*) i
if (i .ne. 7) call abort
close (20)
open (20, status='scratch', form='unformatted')
write (20) 8
backspace (20)
read (20) i
if (i .ne. 8) call abort
close (20)
! PR libfortran/20471
do n = 1, 10
x(n) = sqrt(real(n))
end do
open (3, form='unformatted', status='scratch')
write (3) (x(n),n=1,10)
backspace (3)
rewind (3)
read (3) (y(n),n=1,10)
do n = 1, 10
if (abs(x(n)-y(n)) > 0.00001) call abort
end do
close (3)
! PR libfortran/20156
open (3, form='unformatted', status='scratch')
do i = 1, 5
x(1) = i
write (3) n, (x(n),n=1,10)
end do
nr = 0
rewind (3)
20 continue
read (3,end=30,err=90) n, (x(n),n=1,10)
nr = nr + 1
goto 20
30 continue
if (nr .ne. 5) call abort
do i = 1, nr+1
backspace (3)
end do
do i = 1, nr
read(3,end=70,err=90) n, (x(n),n=1,10)
if (abs(x(1) - i) .gt. 0.001) call abort
end do
close (3)
stop
70 continue
call abort
90 continue
call abort
end