Subversion Repositories openrisc

! { dg-do run }

PROGRAM test_fseek

  INTEGER, PARAMETER :: SEEK_SET = 0, SEEK_CUR = 1, SEEK_END = 2, fd=10

  INTEGER :: ierr = 0

  INTEGER :: newline_length

  ! We first need to determine if a newline is one or two characters

  open (911,status="scratch")

  write(911,"()")

  newline_length = ftell(911)

  close (911)

  if (newline_length < 1 .or. newline_length > 2) call abort()

  open(fd, status="scratch")

  ! expected position: one leading blank + 10 + newline

  WRITE(fd, *) "1234567890"

  IF (FTELL(fd) /= 11 + newline_length) CALL abort()

  ! move backward from current position

  CALL FSEEK(fd, -11 - newline_length, SEEK_CUR, ierr)

  IF (ierr /= 0 .OR. FTELL(fd) /= 0) CALL abort()

  ! move to negative position (error)

  CALL FSEEK(fd, -1, SEEK_SET, ierr)

  IF (ierr == 0 .OR. FTELL(fd) /= 0) CALL abort()

  ! move forward from end (11 + 10 + newline)

  CALL FSEEK(fd, 10, SEEK_END, ierr)

  IF (ierr /= 0 .OR. FTELL(fd) /= 21 + newline_length) CALL abort()

  ! set position (0)

  CALL FSEEK(fd, 0, SEEK_SET, ierr)

  IF (ierr /= 0 .OR. FTELL(fd) /= 0) CALL abort()

  ! move forward from current position

  CALL FSEEK(fd, 5, SEEK_CUR, ierr)

  IF (ierr /= 0 .OR. FTELL(fd) /= 5) CALL abort()

  CALL FSEEK(fd, HUGE(0_1), SEEK_SET, ierr)

  IF (ierr /= 0 .OR. FTELL(fd) /= HUGE(0_1)) CALL abort()

  CALL FSEEK(fd, HUGE(0_2), SEEK_SET, ierr)

  IF (ierr /= 0 .OR. FTELL(fd) /= HUGE(0_2)) CALL abort()

  CALL FSEEK(fd, HUGE(0_4), SEEK_SET, ierr)

  IF (ierr /= 0 .OR. FTELL(fd) /= HUGE(0_4)) CALL abort()

  CALL FSEEK(fd, -HUGE(0_4), SEEK_CUR, ierr)

  IF (ierr /= 0 .OR. FTELL(fd) /= 0) CALL abort()

END PROGRAM