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implicit none
integer, allocatable :: x(:)
x = [1,2,3,4]
call foo(x)
if (any (x /= [1,2,3,4])) error stop
call foo()
contains
subroutine foo(c)
integer, allocatable, optional :: c(:)
logical :: is_present
is_present = present (c)
!$omp target firstprivate(c)
if (is_present) then
if (.not. allocated(c)) error stop
if (any (c /= [1,2,3,4])) error stop
c = [99,88,77,66]
if (any (c /= [99,88,77,66])) error stop
end if
!$omp end target
if (is_present) then
if (any (c /= [1,2,3,4])) error stop
end if
end
end
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