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-rw-r--r--libraries/base/Control/Monad/ST/Strict.hs2
1 files changed, 2 insertions, 0 deletions
diff --git a/libraries/base/Control/Monad/ST/Strict.hs b/libraries/base/Control/Monad/ST/Strict.hs
index 4e474d95ae..c858548c99 100644
--- a/libraries/base/Control/Monad/ST/Strict.hs
+++ b/libraries/base/Control/Monad/ST/Strict.hs
@@ -1,3 +1,5 @@
+{-# LANGUAGE Safe #-}
+
-----------------------------------------------------------------------------
-- |
-- Module : Control.Monad.ST.Strict