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-rw-r--r--testsuite/tests/typecheck/should_compile/T17562b.hs6
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diff --git a/testsuite/tests/typecheck/should_compile/T17562b.hs b/testsuite/tests/typecheck/should_compile/T17562b.hs
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+++ b/testsuite/tests/typecheck/should_compile/T17562b.hs
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+{-# LANGUAGE QuantifiedConstraints, MultiParamTypeClasses, TypeFamilies #-}
+-- NB: No PolyKinds
+
+module T17562b where
+
+class (forall a. a b ~ a c) => C b c