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diff --git a/gcc/testsuite/gfortran.dg/proc_decl_8.f90 b/gcc/testsuite/gfortran.dg/proc_decl_8.f90
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+! { dg-do compile }
+! PR33162 INTRINSIC functions as ACTUAL argument
+! Test case adapted from PR by Jerry DeLisle <jvdelisle@gcc.gnu.org>
+module m
+implicit none
+contains
+  subroutine sub(a)
+    interface
+      function a(x)
+        real :: a, x
+        intent(in) :: x
+      end function a
+    end interface
+    print *, a(4.0)
+  end subroutine sub
+
+end module m
+
+use m
+implicit none
+EXTERNAL foo  ! interface is undefined
+procedure(cos) :: foo ! { dg-error "Duplicate EXTERNAL attribute specified" }
+call sub(foo)         ! { dg-error "is not a function" }
+end
+! { dg-final { cleanup-modules "m" } }