[Bug fortran/67938] New: ICE on using assumed rank character with some intrinsics

["gerhard dot steinmetz dot fortran at t-online dot de" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67938

            Bug ID: 67938
           Summary: ICE on using assumed rank character with some
                    intrinsics
           Product: gcc
           Version: 5.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gerhard.steinmetz.fortran@t-online.de
  Target Milestone: ---

Knowing that assumed rank is preliminary f2015, but :


$ cat z2.f90
program p
   implicit none
   character(1) :: z(3)
   call s(z)
contains
   subroutine s(x)
      character(1) :: x(..)
      print *, lbound(x, dim=1)
      print *, ubound(x, dim=1)
      print *, size(x, dim=1)
   end subroutine
end


$ gfortran -c z2.f90
z2.f90:8:0:

       print *, lbound(x, dim=1)
 1
internal compiler error: in gfc_get_descriptor_dimension, at
fortran/trans-array.c:281


$ gfortran -g -O0 -Wall -fcheck=all -fno-frontend-optimize z2.f90
z2.f90:8:0:

       print *, lbound(x, dim=1)
 1
internal compiler error: in gfc_conv_descriptor_dtype, at
fortran/trans-array.c:251