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diff --git a/testsuite/tests/cpranal/sigs/T19232.hs b/testsuite/tests/cpranal/sigs/T19232.hs
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+++ b/testsuite/tests/cpranal/sigs/T19232.hs
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+module T19232 where
+
+-- | `x` is not used strictly and hence will not be available unboxed, so
+-- the `otherwise` RHS does not have the CPR property, even if it returns
+-- a case binder.
+f :: Bool -> Int -> Int
+f True x
+  | x == 3 = 8
+  | otherwise = x -- NB: the condition was flipped so that we can't substitute `x` for a constant here
+f False _ = 3
+{-# NOINLINE f #-}
+
+-- See also test CaseBinderCPR
+