[Bug fortran/12841] New: [gfortran] passing null to a subroutine

["jv244 at cam dot ac dot uk" <gcc-bugzilla at gcc dot gnu dot org>]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12841

           Summary: [gfortran]  passing null to a subroutine
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jv244 at cam dot ac dot uk
                CC: gcc-bugs at gcc dot gnu dot org

passing NULL() to subroutines is allowed 

   MODULE T
   PUBLIC :: A
   CONTAINS
   SUBROUTINE A(B)
   REAL, POINTER :: B
   IF (ASSOCIATED(B)) CALL ABORT()
   END SUBROUTINE A
   END MODULE T
   USE T
   CALL A(NULL())
   END