| ! { dg-do run } |
| |
| PROGRAM test_fseek |
| INTEGER, PARAMETER :: SEEK_SET = 0, SEEK_CUR = 1, SEEK_END = 2, fd=10 |
| INTEGER :: ierr = 0 |
| |
| ! expected position: 12, one leading blank + 10 + newline |
| WRITE(fd, *) "1234567890" |
| IF (FTELL(fd) /= 12) CALL abort() |
| |
| ! move backward from current position |
| CALL FSEEK(fd, -12, 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 (12 + 10) |
| CALL FSEEK(fd, 10, SEEK_END, ierr) |
| IF (ierr /= 0 .OR. FTELL(fd) /= 22) 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 |
| |
