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-rw-r--r--testsuite/tests/deriving/should_fail/T8851.hs1
1 files changed, 1 insertions, 0 deletions
diff --git a/testsuite/tests/deriving/should_fail/T8851.hs b/testsuite/tests/deriving/should_fail/T8851.hs
index 8b5c0e579d..9015d2be35 100644
--- a/testsuite/tests/deriving/should_fail/T8851.hs
+++ b/testsuite/tests/deriving/should_fail/T8851.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
{-# LANGUAGE GeneralizedNewtypeDeriving, ConstrainedClassMethods #-}
module T8851 where