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! { dg-do run { target fd_truncate } }
!TODO: Move these testcases to gfortran testsuite
! once compilation with pthreads is supported there
! Test BACKSPACE for synchronous and asynchronous I/O
program main
integer i, n, nr
real x(10), y(10)
! PR libfortran/20068
open (20, status='scratch', asynchronous="yes")
write (20,*, asynchronous="yes" ) 1
write (20,*, asynchronous="yes") 2
write (20,*, asynchronous="yes") 3
rewind (20)
i = 41
read (20,*, asynchronous="yes") i
wait (20)
if (i .ne. 1) stop 1
write (*,*) ' '
backspace (20)
i = 42
read (20,*, asynchronous="yes") i
close (20)
if (i .ne. 1) stop 2
! PR libfortran/20125
open (20, status='scratch', asynchronous="yes")
write (20,*, asynchronous="yes") 7
backspace (20)
read (20,*, asynchronous="yes") i
wait (20)
if (i .ne. 7) stop 3
close (20)
open (20, status='scratch', form='unformatted')
write (20) 8
backspace (20)
read (20) i
if (i .ne. 8) stop 4
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) stop 5
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) stop 6
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) stop 7
end do
close (3)
stop
70 continue
stop 8
90 continue
stop 9
end program
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