| ! RUN: %S/test_errors.sh %s %t %f18 |
| ! Pointer assignment constraints 10.2.2.2 (see also assign02.f90) |
| |
| module m |
| interface |
| subroutine s(i) |
| integer i |
| end |
| end interface |
| type :: t |
| procedure(s), pointer, nopass :: p |
| real, pointer :: q |
| end type |
| contains |
| ! C1027 |
| subroutine s1 |
| type(t), allocatable :: a(:) |
| type(t), allocatable :: b[:] |
| a(1)%p => s |
| !ERROR: Procedure pointer may not be a coindexed object |
| b[1]%p => s |
| end |
| ! C1028 |
| subroutine s2 |
| type(t) :: a |
| a%p => s |
| !ERROR: In assignment to object pointer 'q', the target 's' is a procedure designator |
| a%q => s |
| end |
| ! C1029 |
| subroutine s3 |
| type(t) :: a |
| a%p => f() ! OK: pointer-valued function |
| !ERROR: Subroutine pointer 'p' may not be associated with function designator 'f' |
| a%p => f |
| contains |
| function f() |
| procedure(s), pointer :: f |
| f => s |
| end |
| end |
| |
| ! C1030 and 10.2.2.4 - procedure names as target of procedure pointer |
| subroutine s4(s_dummy) |
| procedure(s) :: s_dummy |
| procedure(s), pointer :: p, q |
| procedure(), pointer :: r |
| integer :: i |
| external :: s_external |
| p => s_dummy |
| p => s_internal |
| p => s_module |
| q => p |
| r => s_external |
| contains |
| subroutine s_internal(i) |
| integer i |
| end |
| end |
| subroutine s_module(i) |
| integer i |
| end |
| |
| ! 10.2.2.4(3) |
| subroutine s5 |
| procedure(f_pure), pointer :: p_pure |
| procedure(f_impure), pointer :: p_impure |
| !ERROR: Procedure pointer 'p_elemental' may not be ELEMENTAL |
| procedure(f_elemental), pointer :: p_elemental |
| p_pure => f_pure |
| p_impure => f_impure |
| p_impure => f_pure |
| !ERROR: PURE procedure pointer 'p_pure' may not be associated with non-PURE procedure designator 'f_impure' |
| p_pure => f_impure |
| contains |
| pure integer function f_pure() |
| f_pure = 1 |
| end |
| integer function f_impure() |
| f_impure = 1 |
| end |
| elemental integer function f_elemental() |
| f_elemental = 1 |
| end |
| end |
| |
| ! 10.2.2.4(4) |
| subroutine s6 |
| procedure(s), pointer :: p, q |
| procedure(), pointer :: r |
| external :: s_external |
| !ERROR: Procedure pointer 'p' with explicit interface may not be associated with procedure designator 's_external' with implicit interface |
| p => s_external |
| !ERROR: Procedure pointer 'r' with implicit interface may not be associated with procedure designator 's_module' with explicit interface |
| r => s_module |
| end |
| |
| ! 10.2.2.4(5) |
| subroutine s7 |
| procedure(real) :: f_external |
| external :: s_external |
| procedure(), pointer :: p_s |
| procedure(real), pointer :: p_f |
| p_f => f_external |
| p_s => s_external |
| !ERROR: Subroutine pointer 'p_s' may not be associated with function designator 'f_external' |
| p_s => f_external |
| !ERROR: Function pointer 'p_f' may not be associated with subroutine designator 's_external' |
| p_f => s_external |
| end |
| |
| ! C1017: bounds-spec |
| subroutine s8 |
| real, target :: x(10, 10) |
| real, pointer :: p(:, :) |
| p(2:,3:) => x |
| !ERROR: Pointer 'p' has rank 2 but the number of bounds specified is 1 |
| p(2:) => x |
| end |
| |
| ! bounds-remapping |
| subroutine s9 |
| real, target :: x(10, 10), y(100) |
| real, pointer :: p(:, :) |
| ! C1018 |
| !ERROR: Pointer 'p' has rank 2 but the number of bounds specified is 1 |
| p(1:100) => x |
| ! 10.2.2.3(9) |
| !ERROR: Pointer bounds remapping target must have rank 1 or be simply contiguous |
| p(1:5,1:5) => x(1:10,::2) |
| ! 10.2.2.3(9) |
| !ERROR: Pointer bounds require 25 elements but target has only 20 |
| p(1:5,1:5) => x(:,1:2) |
| !OK - rhs has rank 1 and enough elements |
| p(1:5,1:5) => y(1:100:2) |
| end |
| |
| subroutine s10 |
| integer, pointer :: p(:) |
| type :: t |
| integer :: a(4, 4) |
| integer :: b |
| end type |
| type(t), target :: x |
| type(t), target :: y(10,10) |
| integer :: v(10) |
| p(1:16) => x%a |
| p(1:8) => x%a(:,3:4) |
| p(1:1) => x%b ! We treat scalars as simply contiguous |
| p(1:1) => x%a(1,1) |
| p(1:1) => y(1,1)%a(1,1) |
| p(1:1) => y(:,1)%a(1,1) ! Rank 1 RHS |
| !ERROR: Pointer bounds remapping target must have rank 1 or be simply contiguous |
| p(1:4) => x%a(::2,::2) |
| !ERROR: Pointer bounds remapping target must have rank 1 or be simply contiguous |
| p(1:100) => y(:,:)%b |
| !ERROR: Pointer bounds remapping target must have rank 1 or be simply contiguous |
| p(1:100) => y(:,:)%a(1,1) |
| !ERROR: Pointer bounds remapping target must have rank 1 or be simply contiguous |
| !ERROR: An array section with a vector subscript may not be a pointer target |
| p(1:4) => x%a(:,v) |
| end |
| |
| subroutine s11 |
| complex, target :: x(10,10) |
| complex, pointer :: p(:) |
| real, pointer :: q(:) |
| p(1:100) => x(:,:) |
| q(1:10) => x(1,:)%im |
| !ERROR: Pointer bounds remapping target must have rank 1 or be simply contiguous |
| q(1:100) => x(:,:)%re |
| end |
| |
| ! Check is_contiguous, which is usually the same as when pointer bounds |
| ! remapping is used. If it's not simply contiguous it's not constant so |
| ! an error is reported. |
| subroutine s12 |
| integer, pointer :: p(:) |
| type :: t |
| integer :: a(4, 4) |
| integer :: b |
| end type |
| type(t), target :: x |
| type(t), target :: y(10,10) |
| integer :: v(10) |
| logical, parameter :: l1 = is_contiguous(x%a(:,:)) |
| logical, parameter :: l2 = is_contiguous(y(1,1)%a(1,1)) |
| !ERROR: Must be a constant value |
| logical, parameter :: l3 = is_contiguous(y(:,1)%a(1,1)) |
| !ERROR: Must be a constant value |
| logical, parameter :: l4 = is_contiguous(x%a(:,v)) |
| !ERROR: Must be a constant value |
| logical, parameter :: l5 = is_contiguous(y(v,1)%a(1,1)) |
| end |
| subroutine test3(b) |
| integer, intent(inout) :: b(..) |
| !ERROR: Must be a constant value |
| integer, parameter :: i = rank(b) |
| end subroutine |
| |
| |
| end |