topic Access violation on calling member function of a type via polymorphic pointer in Intel® Fortran Compiler

Access violation on calling member function of a type via polymorphic pointer

thomas_boehme — Tue, 01 Sep 2009 15:01:41 GMT

The code below produces an access violation on the call (IVF 11.1.038). I am quite sure that this should not happen with the given code.

I am not sure, if it is related to any of the other issues I have been reporting regarding the OO-features in v11.1

Best regards,
Thomas

[plain]    module TypeDefs

    implicit none

    type :: A
    integer :: val
    contains 
        procedure Display => DisplayA
    end type
        
    type, extends(A) :: B
        integer :: val2
    end type

    contains
    
    subroutine DisplayA( this )
    class (A)        :: this
        write (*,*) 'DisplayA: ', this%val
    end subroutine
        
    end module TypeDefs

    program Test
    use TypeDefs

    type (B), target        ::  Binst
    class (A), pointer      ::  ClassPtr
    
    Binst%val = 1
    Binst%val2 = 2
    
    ClassPtr => Binst
    CALL ClassPtr%Display

    end program Test
[/plain]

Re: Access violation on calling member function of a type via p

TimP — Tue, 01 Sep 2009 15:35:47 GMT

The 11.1 compiler says ClassPtr is NULL. So this goes beyond the degree to which f2003 is implemented in the released compiler. Result from a newer ifort:
DisplayA: 1

Re: Access violation on calling member function of a type via p

thomas_boehme — Tue, 01 Sep 2009 15:53:02 GMT

Quoting - tim18

The 11.1 compiler says ClassPtr is NULL. So this goes beyond the degree to which f2003 is implemented in the released compiler. Result from a newer ifort:
DisplayA: 1

Thanks for the info.

Any estimates on when this release will be available?

best regards,
Thomas