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diff --git a/gcc/testsuite/gfortran.dg/intrinsic_1.f90 b/gcc/testsuite/gfortran.dg/intrinsic_1.f90
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+! { dg-do compile }
+!
+! PR 39861/39864
+!
+! Test cases provided by Dominique d'Humieres <dominiq@lps.ens.fr>
+! and Michael Richmond <michael.a.richmond@nasa.gov>.
+
+module vector_calculus
+  intrinsic :: dot_product, sqrt
+
+contains
+
+  function len(r)
+    real, dimension(:), intent(in) :: r
+    real :: len
+    len = sqrt(dot_product(r,r))
+  end function len
+
+  FUNCTION next_state()
+    INTRINSIC :: RESHAPE
+    INTEGER, PARAMETER :: trantb(1,1) = RESHAPE((/1,2/), shape=(/1,1/))
+    next_state = trantb(1, 1)
+  END FUNCTION next_state
+
+end module vector_calculus
+
+! { dg-final { cleanup-modules "vector_calculus" } }
+