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diff --git a/gcc/testsuite/gfortran.dg/internal_dummy_4.f08 b/gcc/testsuite/gfortran.dg/internal_dummy_4.f08
new file mode 100644
index 000000000..1d8b8b228
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+++ b/gcc/testsuite/gfortran.dg/internal_dummy_4.f08
@@ -0,0 +1,57 @@
+! { dg-do run }
+! PR fortran/34133
+! PR fortran/34162
+!
+! Test of using internal bind(C) procedures as
+! actual argument. Bind(c) on internal procedures and
+! internal procedures are actual argument are
+! Fortran 2008 (draft) extension.
+!
+module test_mod
+  use iso_c_binding
+  implicit none
+contains
+  subroutine test_sub(a, arg, res)
+    interface
+      subroutine a(x) bind(C)
+        import
+        integer(c_int), intent(inout) :: x
+      end subroutine a
+    end interface
+    integer(c_int), intent(inout) :: arg
+    integer(c_int), intent(in) :: res
+    call a(arg)
+    if(arg /= res) call abort()
+  end subroutine test_sub
+  subroutine test_func(a, arg, res)
+    interface
+      integer(c_int) function a(x) bind(C)
+        import
+        integer(c_int), intent(in) :: x
+      end function a
+    end interface
+    integer(c_int), intent(in) :: arg
+    integer(c_int), intent(in) :: res
+    if(a(arg) /= res) call abort()
+  end subroutine test_func
+end module test_mod
+
+program main
+  use test_mod
+  implicit none
+  integer :: a
+  a = 33
+  call test_sub (one, a, 7*33)
+  a = 23
+  call test_func(two, a, -123*23)
+contains
+  subroutine one(x) bind(c)
+     integer(c_int),intent(inout) :: x
+     x = 7*x
+  end subroutine one
+  integer(c_int) function two(y) bind(c)
+     integer(c_int),intent(in) :: y
+     two = -123*y
+  end function two
+end program main
+! { dg-final { cleanup-modules "test_mod" } }