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Subject: [Bug fortran/45836] New: Fortran 2003 - Type Bound Procedure Error - Type Mismatch
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45836

           Summary: Fortran 2003 - Type Bound Procedure Error - Type
                    Mismatch
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ortp21@gmail.com


The following error is produced by the example typeboundprocedure.f95, pasted
below:

Error
----------------------------------------------
typeboundprocedure.f95:46.12:

    print *, b_type_instance%sizeReturn()
            1
Error: Type mismatch in argument 'a_type_' at (1); passed TYPE(b_type) to
CLASS(a_type)
----------------------------------------------

I have tested the same example using the Intel Fortran Compiler 11.1 on Linux
and it compiles without error.

Compiled using:

gfortran -c typeboundprocedure.f95

typeboundprocedure.f95
----------------------------------------------
module A
implicit none
    type :: a_type
    private
        integer :: size = 1
    contains
        procedure :: sizeReturn
    end type a_type
    contains
        function sizeReturn( a_type_ )
            implicit none
            integer :: sizeReturn
            class(a_type) :: a_type_

            sizeReturn = a_type_%size
        end function sizeReturn
end module A

module B
implicit none
    type :: b_type
    private
        integer :: size = 2
    contains
        procedure :: sizeReturn
    end type b_type
    contains
        function sizeReturn( b_type_ )
            implicit none
            integer :: sizeReturn
            class(b_type) :: b_type_

            sizeReturn = b_type_%size
        end function sizeReturn
end module B

program main
use A
use B
implicit none
    type(a_type) :: a_type_instance
    type(b_type) :: b_type_instance

    print *, a_type_instance%sizeReturn()
    print *, b_type_instance%sizeReturn()
end program main
----------------------------------------------

Using built-in specs.
COLLECT_GCC=gfortran
Target: x86_64-apple-darwin10.4.0
Configured with: ../gcc-4.6-20100925/configure --prefix=~$HOME/gcc-trunk
--enable-languages=fortran --enable-checking=release --disable-bootstrap
Thread model: posix
gcc version 4.6.0 20100925 (experimental) (GCC)