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-rw-r--r--testsuite/tests/ghci/scripts/ghci057.hs1
1 files changed, 1 insertions, 0 deletions
diff --git a/testsuite/tests/ghci/scripts/ghci057.hs b/testsuite/tests/ghci/scripts/ghci057.hs
index 2a6b836d80..23bad888bc 100644
--- a/testsuite/tests/ghci/scripts/ghci057.hs
+++ b/testsuite/tests/ghci/scripts/ghci057.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
module Test where
data T a where
C :: T Int