1fa9ef620b
Consolidate aspects of pointer assignment & structure constructor pointer component checking from Semantics/assignment.cpp and /expression.cpp into /pointer-assignment.cpp, and add a warning about data targets that are not definable objects but not hard errors. Specifically, a structure component pointer component data target is not allowed to be a USE-associated object in a pure context by a numbered constraint, but the right-hand side data target of a pointer assignment statement has no such constraint, and that's the new warning. Differential Revision: https://reviews.llvm.org/D146581
42 lines
1.9 KiB
Fortran
42 lines
1.9 KiB
Fortran
! RUN: %python %S/test_errors.py %s %flang_fc1
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! Enforce 18.2.3.3
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program test
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use iso_c_binding, only: c_ptr, c_f_pointer
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type(c_ptr) :: scalarC, arrayC(1)
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type :: with_pointer
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integer, pointer :: p
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end type
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type(with_pointer) :: coindexed[*]
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integer, pointer :: scalarIntF, arrayIntF(:), multiDimIntF(:,:)
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character(len=:), pointer :: charDeferredF
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integer :: j
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integer, dimension(2, 2) :: rankTwoArray
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rankTwoArray = reshape([1, 2, 3, 4], shape(rankTwoArray))
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call c_f_pointer(scalarC, scalarIntF) ! ok
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call c_f_pointer(scalarC, arrayIntF, [1_8]) ! ok
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call c_f_pointer(shape=[1_8], cptr=scalarC, fptr=arrayIntF) ! ok
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call c_f_pointer(scalarC, shape=[1_8], fptr=arrayIntF) ! ok
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!ERROR: A positional actual argument may not appear after any keyword arguments
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call c_f_pointer(scalarC, fptr=arrayIntF, [1_8])
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!ERROR: CPTR= argument to C_F_POINTER() must be a C_PTR
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call c_f_pointer(j, scalarIntF)
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!ERROR: Rank of dummy argument is 0, but actual argument has rank 1
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call c_f_pointer(arrayC, scalarIntF)
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!ERROR: SHAPE= argument to C_F_POINTER() must appear when FPTR= is an array
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call c_f_pointer(scalarC, arrayIntF)
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!ERROR: SHAPE= argument to C_F_POINTER() may not appear when FPTR= is scalar
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call c_f_pointer(scalarC, scalarIntF, [1_8])
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!ERROR: FPTR= argument to C_F_POINTER() may not have a deferred type parameter
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call c_f_pointer(scalarC, charDeferredF)
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!ERROR: FPTR= argument to C_F_POINTER() may not be a coindexed object
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!ERROR: A coindexed object may not be a pointer target
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call c_f_pointer(scalarC, coindexed[0]%p)
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!ERROR: FPTR= argument to C_F_POINTER() must have a type
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call c_f_pointer(scalarC, null())
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!ERROR: SHAPE= argument to C_F_POINTER() must have size equal to the rank of FPTR=
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call c_f_pointer(scalarC, multiDimIntF, shape=[1_8])
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!ERROR: SHAPE= argument to C_F_POINTER() must be a rank-one array.
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call c_f_pointer(scalarC, multiDimIntF, shape=rankTwoArray)
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end program
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