[Bug fortran/33198] New: Derived type in common: Default initializer not rejected

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

Split off from PR 32985.

gfortran does not reject derived types with default initializers in common.

"C589 (R558) If a common-block-object is of a derived type, it shall be a
sequence type (4.5.1) or a type with the BIND attribute and it shall have no
default initialization."

The check should be added to resolve.c's resolve_common_blocks.

Example:

  type a
    sequence
    integer :: i = 1
  end type a
  type(a) :: t
  common /c/ t
  end


-- 
           Summary: Derived type in common: Default initializer not rejected
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: accepts-invalid
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: burnus at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33198