138 lines
3.7 KiB
Fortran
138 lines
3.7 KiB
Fortran
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! RUN: %python %S/test_errors.py %s %flang_fc1 -pedantic
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subroutine forall1
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real :: a(9)
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!ERROR: 'i' is already declared in this scoping unit
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!ERROR: Cannot redefine FORALL variable 'i'
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forall (i=1:8, i=1:9) a(i) = i
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!ERROR: 'i' is already declared in this scoping unit
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!ERROR: Cannot redefine FORALL variable 'i'
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forall (i=1:8, i=1:9)
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a(i) = i
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end forall
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forall (j=1:8)
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!PORTABILITY: Index variable 'j' should not also be an index in an enclosing FORALL or DO CONCURRENT
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forall (j=1:9)
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end forall
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end forall
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end
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subroutine forall2
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integer, pointer :: a(:)
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integer, target :: b(10,10)
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forall (i=1:10)
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!ERROR: Impure procedure 'f_impure' may not be referenced in a FORALL
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a(f_impure(i):) => b(i,:)
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end forall
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!ERROR: FORALL mask expression may not reference impure procedure 'f_impure'
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forall (j=1:10, f_impure(1)>2)
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end forall
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contains
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impure integer function f_impure(i)
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f_impure = i
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end
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end
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subroutine forall3
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real :: x
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forall(i=1:10)
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!ERROR: Cannot redefine FORALL variable 'i'
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i = 1
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end forall
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forall(i=1:10)
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forall(j=1:10)
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!ERROR: Cannot redefine FORALL variable 'i'
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!WARNING: FORALL index variable 'j' not used on left-hand side of assignment
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i = 1
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end forall
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end forall
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!ERROR: Cannot redefine FORALL variable 'i'
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forall(i=1:10) i = 1
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end
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subroutine forall4
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integer, parameter :: zero = 0
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integer :: a(10)
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!ERROR: FORALL limit expression may not reference index variable 'i'
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forall(i=1:i)
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a(i) = i
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end forall
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!ERROR: FORALL step expression may not reference index variable 'i'
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forall(i=1:10:i)
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a(i) = i
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end forall
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!ERROR: FORALL step expression may not be zero
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forall(i=1:10:zero)
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a(i) = i
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end forall
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!ERROR: FORALL limit expression may not reference index variable 'i'
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forall(i=1:i) a(i) = i
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!ERROR: FORALL step expression may not reference index variable 'i'
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forall(i=1:10:i) a(i) = i
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!ERROR: FORALL step expression may not be zero
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forall(i=1:10:zero) a(i) = i
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end
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subroutine forall5
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real, target :: x(10), y(10)
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forall(i=1:10)
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x(i) = y(i)
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end forall
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forall(i=1:10)
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!WARNING: FORALL index variable 'i' not used on left-hand side of assignment
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x = y
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forall(j=1:10)
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!WARNING: FORALL index variable 'j' not used on left-hand side of assignment
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x(i) = y(i)
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!WARNING: FORALL index variable 'i' not used on left-hand side of assignment
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x(j) = y(j)
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endforall
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endforall
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do concurrent(i=1:10)
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x = y
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!Odd rule from F'2023 19.4 p8
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!PORTABILITY: Index variable 'i' should not also be an index in an enclosing FORALL or DO CONCURRENT
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!WARNING: FORALL index variable 'i' not used on left-hand side of assignment
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forall(i=1:10) x = y
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end do
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end
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subroutine forall6
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type t
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real, pointer :: p
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end type
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type(t) :: a(10)
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real, target :: b(10)
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forall(i=1:10)
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a(i)%p => b(i)
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!WARNING: FORALL index variable 'i' not used on left-hand side of assignment
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a(1)%p => b(i)
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end forall
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end
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subroutine forall7(x)
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integer :: iarr(1)
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real :: a(10)
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class(*) :: x
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associate (j => iarr(1))
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!PORTABILITY: Index variable 'j' should be a scalar object or common block if it is present in the enclosing scope
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forall (j=1:size(a))
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a(j) = a(j) + 1
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end forall
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end associate
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associate (j => iarr(1) + 1)
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!PORTABILITY: Index variable 'j' should be a scalar object or common block if it is present in the enclosing scope
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forall (j=1:size(a))
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a(j) = a(j) + 1
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end forall
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end associate
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select type (j => x)
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type is (integer)
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!PORTABILITY: Index variable 'j' should be a scalar object or common block if it is present in the enclosing scope
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forall (j=1:size(a))
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a(j) = a(j) + 1
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end forall
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end select
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end subroutine
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