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diff --git a/ghc/compiler/tests/deriving/drv002.hs b/ghc/compiler/tests/deriving/drv002.hs
new file mode 100644
index 0000000..e8855f2
--- /dev/null
+++ b/ghc/compiler/tests/deriving/drv002.hs
@@ -0,0 +1,11 @@
+data Z a b
+  = C1 (T a)
+  | C2 (Z [a] [b])
+  deriving Text
+
+data T a
+  = E1
+
+instance Eq a => Text (T a) where
+    showsPrec = error "show"
+    readsPrec = error "read"