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-rw-r--r--testsuite/tests/module/mod157.hs13
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diff --git a/testsuite/tests/module/mod157.hs b/testsuite/tests/module/mod157.hs
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+-- !!! cumulative re-exportation of data constructors
+module M where
+
+import Mod157_D
+
+-- Mod157_D re-exports the type T using (..). T is defined
+-- in Mod157_A, but (only) two of its constructors are visible
+-- in Mod157_D, one via Mod157_B, the other via Mod157_C.
+a = A
+b = B
+
+
+