8594b051fb
As is already supported for dummy procedures, we need to also accept declarations of procedure pointers that consist of a POINTER attribute statement followed by an INTERFACE block. (The case of an INTERFACE block followed by a POINTER statement already works.) While cleaning this case up, adjust the utility predicate IsProcedurePointer() to recognize it (namely a SubprogramDetails symbol with Attr::POINTER) and delete IsProcName(). Extend tests, and add better comments to symbol.h to document the two ways in which procedure pointers are represented. Differential Revision: https://reviews.llvm.org/D125139
50 lines
1.1 KiB
Fortran
50 lines
1.1 KiB
Fortran
! RUN: %python %S/test_errors.py %s %flang_fc1
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! Check for semantic errors in NULLIFY statements
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INTEGER, PARAMETER :: maxvalue=1024
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Type dt
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Integer :: l = 3
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End Type
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Type t
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Type(dt) :: p
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End Type
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Type(t),Allocatable :: x(:)
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Integer :: pi
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Procedure(Real) :: prp
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Allocate(x(3))
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!ERROR: component in NULLIFY statement must have the POINTER attribute
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Nullify(x(2)%p)
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!ERROR: name in NULLIFY statement must have the POINTER attribute
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Nullify(pi)
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!ERROR: name in NULLIFY statement must be a variable or procedure pointer
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Nullify(prp)
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!ERROR: name in NULLIFY statement must be a variable or procedure pointer
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Nullify(maxvalue)
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End Program
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! Make sure that the compiler doesn't crash when NULLIFY is used in a context
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! that has reported errors
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module badNullify
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interface
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function ptrFun()
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integer, pointer :: ptrFun
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end function
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end interface
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contains
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!ERROR: 'ptrfun' was not declared a separate module procedure
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module function ptrFun()
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integer, pointer :: ptrFun
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real :: realVar
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nullify(ptrFun)
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nullify(realVar)
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end function
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end module
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