[Bug fortran/46161] New: [OOP] Invalid: Passing non-polymorphic to allocatable polymorphic dummy

["burnus at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46161

           Summary: [OOP] Invalid: Passing non-polymorphic to allocatable
                    polymorphic dummy
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Keywords: accepts-invalid
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: burnus@gcc.gnu.org


Follow up to PR 45451 comment 14. The following is not detected:

Passing a non-polymorphic actual argument ("type(foo), allocatable") to an
allocatable polymorphic dummy ("class(foo), allocatable").

>From Fortran 2008: "12.5.2.5 Allocatable and pointer dummy variables"
"The actual argument shall be polymorphic if and only if the associated dummy
argument is polymorphic, and either both the actual and dummy arguments shall
be unlimited polymorphic, or the declared type of the actual argument shall be
the same as the declared type of the dummy argument."

Test case: attachment 21613 of PR 45451. Crayftn rejects the example with the
following error message - gfortran prints no error:

  call doit(atx,acsr)
                ^     
ftn-1872 crayftn: ERROR BUG23, File = long2.f90, Line = 304, Column = 17 
  Dummy argument "ACSR" is a polymorphic ALLOCATABLE.  It requires a
polymorphic ALLOCATABLE actual argument.