--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gfortran.dg/assumed_rank_8.f90	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,71 @@
+! { dg-do run }
+! { dg-additional-sources assumed_rank_8_c.c }
+!
+! PR fortran/48820
+!
+! Scalars to assumed-rank tests
+!
+program main
+  implicit none
+
+  interface
+    subroutine check (x)
+      integer :: x(..)
+    end subroutine check
+  end interface
+
+  integer, target :: ii, j
+  integer, allocatable :: kk
+  integer, pointer :: ll
+  ii = 489
+  j = 0
+  call f (ii)
+  call f (489)
+  call f ()
+  call f (null())
+  call f (kk)
+  if (j /= 2) call abort()
+
+  j = 0
+  nullify (ll)
+  call g (null())
+  call g (ll)
+  call g (ii)
+  if (j /= 1) call abort()
+
+  j = 0
+  call h (kk)
+  kk = 489
+  call h (kk)
+  if (j /= 1) call abort()
+
+contains
+
+  subroutine f (x)
+    integer, optional :: x(..)
+
+    if (.not. present (x)) return
+    if (rank (x) /= 0) call abort
+    call check (x)
+    j = j + 1
+  end subroutine
+
+  subroutine g (x)
+    integer, pointer, intent(in) :: x(..)
+
+    if (.not. associated (x)) return
+    if (rank (x) /= 0) call abort ()
+    call check (x)
+    j = j + 1
+  end subroutine
+
+  subroutine h (x)
+    integer, allocatable :: x(..)
+
+    if (.not. allocated (x)) return
+    if (rank (x) /= 0) call abort
+    call check (x)
+    j = j + 1
+  end subroutine
+
+end program main