| ! RUN: %S/test_errors.sh %s %t %f18 |
| ! Test restrictions on what subprograms can be used for defined assignment. |
| |
| module m1 |
| implicit none |
| type :: t |
| contains |
| !ERROR: Defined assignment procedure 'binding' must be a subroutine |
| generic :: assignment(=) => binding |
| procedure :: binding => assign_t1 |
| procedure :: assign_t |
| procedure :: assign_t2 |
| procedure :: assign_t3 |
| !ERROR: Defined assignment subroutine 'assign_t2' must have two dummy arguments |
| !ERROR: In defined assignment subroutine 'assign_t3', second dummy argument 'y' must have INTENT(IN) or VALUE attribute |
| !ERROR: In defined assignment subroutine 'assign_t4', first dummy argument 'x' must have INTENT(OUT) or INTENT(INOUT) |
| generic :: assignment(=) => assign_t, assign_t2, assign_t3, assign_t4 |
| procedure :: assign_t4 |
| end type |
| type :: t2 |
| contains |
| procedure, nopass :: assign_t |
| !ERROR: Defined assignment procedure 'assign_t' may not have NOPASS attribute |
| generic :: assignment(=) => assign_t |
| end type |
| contains |
| subroutine assign_t(x, y) |
| class(t), intent(out) :: x |
| type(t), intent(in) :: y |
| end |
| logical function assign_t1(x, y) |
| class(t), intent(out) :: x |
| type(t), intent(in) :: y |
| end |
| subroutine assign_t2(x) |
| class(t), intent(out) :: x |
| end |
| subroutine assign_t3(x, y) |
| class(t), intent(out) :: x |
| real :: y |
| end |
| subroutine assign_t4(x, y) |
| class(t) :: x |
| integer, intent(in) :: y |
| end |
| end |
| |
| module m2 |
| type :: t |
| end type |
| interface assignment(=) |
| !ERROR: In defined assignment subroutine 's1', dummy argument 'y' may not be OPTIONAL |
| subroutine s1(x, y) |
| import t |
| type(t), intent(out) :: x |
| real, optional, intent(in) :: y |
| end |
| !ERROR: In defined assignment subroutine 's2', dummy argument 'y' must be a data object |
| subroutine s2(x, y) |
| import t |
| type(t), intent(out) :: x |
| intent(in) :: y |
| interface |
| subroutine y() |
| end |
| end interface |
| end |
| end interface |
| end |
| |
| ! Detect defined assignment that conflicts with intrinsic assignment |
| module m5 |
| type :: t |
| end type |
| interface assignment(=) |
| ! OK - lhs is derived type |
| subroutine assign_tt(x, y) |
| import t |
| type(t), intent(out) :: x |
| type(t), intent(in) :: y |
| end |
| !OK - incompatible types |
| subroutine assign_il(x, y) |
| integer, intent(out) :: x |
| logical, intent(in) :: y |
| end |
| !OK - different ranks |
| subroutine assign_23(x, y) |
| integer, intent(out) :: x(:,:) |
| integer, intent(in) :: y(:,:,:) |
| end |
| !OK - scalar = array |
| subroutine assign_01(x, y) |
| integer, intent(out) :: x |
| integer, intent(in) :: y(:) |
| end |
| !ERROR: Defined assignment subroutine 'assign_10' conflicts with intrinsic assignment |
| subroutine assign_10(x, y) |
| integer, intent(out) :: x(:) |
| integer, intent(in) :: y |
| end |
| !ERROR: Defined assignment subroutine 'assign_ir' conflicts with intrinsic assignment |
| subroutine assign_ir(x, y) |
| integer, intent(out) :: x |
| real, intent(in) :: y |
| end |
| !ERROR: Defined assignment subroutine 'assign_ii' conflicts with intrinsic assignment |
| subroutine assign_ii(x, y) |
| integer(2), intent(out) :: x |
| integer(1), intent(in) :: y |
| end |
| end interface |
| end |