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bcb2591b6c
Catch additional missing error cases for typed and untyped NULL actual arguments to non-intrinsic procedures in cases of explicit and implicit interfaces. Differential Revision: https://reviews.llvm.org/D110003
87 lines
2.7 KiB
Fortran
87 lines
2.7 KiB
Fortran
! RUN: %python %S/test_errors.py %s %flang_fc1
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! NULL() intrinsic function error tests
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subroutine test
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interface
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subroutine s0
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end subroutine
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subroutine s1(j)
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integer, intent(in) :: j
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end subroutine
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subroutine canbenull(x, y)
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integer, intent(in), optional :: x
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real, intent(in), pointer :: y
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end
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function f0()
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real :: f0
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end function
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function f1(x)
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real :: f1
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real, intent(inout) :: x
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end function
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function f2(p)
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import s0
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real :: f1
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procedure(s0), pointer, intent(inout) :: p
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end function
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function f3()
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import s1
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procedure(s1), pointer :: f3
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end function
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end interface
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external implicit
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type :: dt0
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integer, pointer :: ip0
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end type dt0
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type :: dt1
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integer, pointer :: ip1(:)
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end type dt1
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type :: dt2
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procedure(s0), pointer, nopass :: pps0
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end type dt2
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type :: dt3
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procedure(s1), pointer, nopass :: pps1
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end type dt3
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integer :: j
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type(dt0) :: dt0x
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type(dt1) :: dt1x
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type(dt2) :: dt2x
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type(dt3) :: dt3x
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integer, pointer :: ip0, ip1(:), ip2(:,:)
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integer, allocatable :: ia0, ia1(:), ia2(:,:)
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real, pointer :: rp0, rp1(:)
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integer, parameter :: ip0r = rank(null(mold=ip0))
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integer, parameter :: ip1r = rank(null(mold=ip1))
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integer, parameter :: ip2r = rank(null(mold=ip2))
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integer, parameter :: eight = ip0r + ip1r + ip2r + 5
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real(kind=eight) :: r8check
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ip0 => null() ! ok
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ip1 => null() ! ok
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ip2 => null() ! ok
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!ERROR: MOLD= argument to NULL() must be a pointer or allocatable
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ip0 => null(mold=1)
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!ERROR: MOLD= argument to NULL() must be a pointer or allocatable
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ip0 => null(mold=j)
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dt0x = dt0(null())
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dt0x = dt0(ip0=null())
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dt0x = dt0(ip0=null(ip0))
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dt0x = dt0(ip0=null(mold=ip0))
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!ERROR: function result type 'REAL(4)' is not compatible with pointer type 'INTEGER(4)'
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dt0x = dt0(ip0=null(mold=rp0))
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!ERROR: function result type 'REAL(4)' is not compatible with pointer type 'INTEGER(4)'
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dt1x = dt1(ip1=null(mold=rp1))
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dt2x = dt2(pps0=null())
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dt2x = dt2(pps0=null(mold=dt2x%pps0))
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!ERROR: Procedure pointer 'pps0' associated with result of reference to function 'null' that is an incompatible procedure pointer
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dt2x = dt2(pps0=null(mold=dt3x%pps1))
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!ERROR: Procedure pointer 'pps1' associated with result of reference to function 'null' that is an incompatible procedure pointer
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dt3x = dt3(pps1=null(mold=dt2x%pps0))
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dt3x = dt3(pps1=null(mold=dt3x%pps1))
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call canbenull(null(), null()) ! fine
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call canbenull(null(mold=ip0), null(mold=rp0)) ! fine
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!ERROR: Null pointer argument requires an explicit interface
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call implicit(null())
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!ERROR: Null pointer argument requires an explicit interface
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call implicit(null(mold=ip0))
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end subroutine test
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