flang/test/Semantics/c_f_pointer.f90

! RUN: %python %S/test_errors.py %s %flang_fc1
! Enforce 18.2.3.3

program test
  use iso_c_binding, only: c_ptr, c_f_pointer
  type(c_ptr) :: scalarC, arrayC(1)
  type :: with_pointer
    integer, pointer :: p
  end type
  type(with_pointer) :: coindexed[*]
  integer, pointer :: scalarIntF, arrayIntF(:)
  character(len=:), pointer :: charDeferredF
  integer :: j
  call c_f_pointer(scalarC, scalarIntF) ! ok
  call c_f_pointer(scalarC, arrayIntF, [1_8]) ! ok
  call c_f_pointer(shape=[1_8], cptr=scalarC, fptr=arrayIntF) ! ok
  call c_f_pointer(scalarC, shape=[1_8], fptr=arrayIntF) ! ok
  !ERROR: A positional actual argument may not appear after any keyword arguments
  call c_f_pointer(scalarC, fptr=arrayIntF, [1_8])
  !ERROR: CPTR= argument to C_F_POINTER() must be a C_PTR
  call c_f_pointer(j, scalarIntF)
  !ERROR: CPTR= argument to C_F_POINTER() must be scalar
  call c_f_pointer(arrayC, scalarIntF)
  !ERROR: SHAPE= argument to C_F_POINTER() must appear when FPTR= is an array
  call c_f_pointer(scalarC, arrayIntF)
  !ERROR: SHAPE= argument to C_F_POINTER() may not appear when FPTR= is scalar
  call c_f_pointer(scalarC, scalarIntF, [1_8])
  !ERROR: FPTR= argument to C_F_POINTER() may not have a deferred type parameter
  call c_f_pointer(scalarC, charDeferredF)
  !ERROR: FPTR= argument to C_F_POINTER() may not be a coindexed object
  call c_f_pointer(scalarC, coindexed[0]%p)
end program