| ! Program to test DERIVED type with components point to the DERIVED |
| ! type itself, and two DERIVED type with componets point to each |
| ! other. |
| program nest_derived |
| type record |
| integer :: value |
| type(record), pointer :: rp |
| end type record |
| |
| type record1 |
| integer value |
| type(record2), pointer :: r1p |
| end type |
| |
| type record2 |
| integer value |
| type(record1), pointer :: r2p |
| end type |
| |
| type(record), target :: e1, e2, e3 |
| type(record1), target :: r1 |
| type(record2), target :: r2 |
| nullify(r1%r1p,r2%r2p,e1%rp,e2%rp,e3%rp) |
| |
| r1%r1p => r2 |
| r2%r2p => r1 |
| e1%rp => e2 |
| e2%rp => e3 |
| |
| r1%value = 11 |
| r2%value = 22 |
| |
| e1%value = 33 |
| e1%rp%value = 44 |
| e1%rp%rp%value = 55 |
| |
| if (r1%r1p%value .ne. 22) call abort |
| if (r2%r2p%value .ne. 11) call abort |
| if (e1%value .ne. 33) call abort |
| if (e2%value .ne. 44) call abort |
| if (e3%value .ne. 55) call abort |
| if (r1%value .ne. 11) call abort |
| if (r2%value .ne. 22) call abort |
| |
| end |
