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-rw-r--r--testsuite/tests/typecheck/should_fail/tcfail149.hs2
1 files changed, 2 insertions, 0 deletions
diff --git a/testsuite/tests/typecheck/should_fail/tcfail149.hs b/testsuite/tests/typecheck/should_fail/tcfail149.hs
index 2479ed75c8..090db8de22 100644
--- a/testsuite/tests/typecheck/should_fail/tcfail149.hs
+++ b/testsuite/tests/typecheck/should_fail/tcfail149.hs
@@ -1,3 +1,5 @@
+{-# LANGUAGE ConstrainedClassMethods #-}
+
module Main where
class C a where