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-rw-r--r--testsuite/tests/typecheck/should_compile/T4355.hs1
1 files changed, 1 insertions, 0 deletions
diff --git a/testsuite/tests/typecheck/should_compile/T4355.hs b/testsuite/tests/typecheck/should_compile/T4355.hs
index 7e49dd8225..62ba16baa0 100644
--- a/testsuite/tests/typecheck/should_compile/T4355.hs
+++ b/testsuite/tests/typecheck/should_compile/T4355.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
{-# OPTIONS_GHC -fno-warn-redundant-constraints -fno-warn-missing-methods #-}
{-# LANGUAGE DeriveDataTypeable, ExistentialQuantification, RankNTypes, MultiParamTypeClasses, FunctionalDependencies, FlexibleInstances, FlexibleContexts, PatternGuards, DatatypeContexts #-}