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-rw-r--r--testsuite/tests/indexed-types/should_compile/Simple18.hs10
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diff --git a/testsuite/tests/indexed-types/should_compile/Simple18.hs b/testsuite/tests/indexed-types/should_compile/Simple18.hs
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+++ b/testsuite/tests/indexed-types/should_compile/Simple18.hs
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+{-# LANGUAGE TypeFamilies #-}
+
+module Simple18 where
+
+type family F a
+
+type instance F Int = [Int]
+
+foo :: F Int
+foo = [1] \ No newline at end of file