| ! { dg-do run } |
| ! { dg-options "-fmax-subrecord-length=16" } |
| ! Test Intel record markers with 16-byte subrecord sizes. |
| program main |
| implicit none |
| integer, dimension(20) :: n |
| integer, dimension(30) :: m |
| integer :: i |
| real :: r |
| integer :: k |
| ! Maximum subrecord length is 16 here, or the test will fail. |
| open (10, file="f10.dat", & |
| form="unformatted", access="sequential") |
| n = (/ (i**2, i=1, 20) /) |
| write (10) n |
| close (10) |
| ! Read back the file, including record markers. |
| open (10, file="f10.dat", form="unformatted", access="stream") |
| read (10) m |
| if (any(m .ne. (/ -16, 1, 4, 9, 16, 16, -16, 25, 36, 49, 64, & |
| -16, -16, 81, 100, 121, 144, -16, -16, 169, 196, 225, & |
| 256, -16, 16, 289, 324, 361, 400, -16 /))) call abort |
| close (10) |
| open (10, file="f10.dat", form="unformatted", & |
| access="sequential") |
| m = 42 |
| read (10) m(1:5) |
| if (any(m(1:5) .ne. (/ 1, 4, 9, 16, 25 /))) call abort |
| if (any(m(6:30) .ne. 42)) call abort |
| backspace 10 |
| n = 0 |
| read (10) n(1:5) |
| if (any(n(1:5) .ne. (/ 1, 4, 9, 16, 25 /))) call abort |
| if (any(n(6:20) .ne. 0)) call abort |
| ! Append to the end of the file |
| write (10) 3.14 |
| ! Test multiple backspace statements |
| backspace 10 |
| backspace 10 |
| read (10) k |
| if (k .ne. 1) call abort |
| read (10) r |
| if (abs(r-3.14) .gt. 1e-7) call abort |
| close (10, status="delete") |
| end program main |
