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-rw-r--r--System/Posix/Process/ByteString.hsc5
1 files changed, 4 insertions, 1 deletions
diff --git a/System/Posix/Process/ByteString.hsc b/System/Posix/Process/ByteString.hsc
index 294970e..ee2c9cf 100644
--- a/System/Posix/Process/ByteString.hsc
+++ b/System/Posix/Process/ByteString.hsc
@@ -1,6 +1,9 @@
-#ifdef __GLASGOW_HASKELL__
+#if __GLASGOW_HASKELL__ >= 709
+{-# LANGUAGE Safe #-}
+#elif __GLASGOW_HASKELL__ >= 703
{-# LANGUAGE Trustworthy #-}
#endif
+
-----------------------------------------------------------------------------
-- |
-- Module : System.Posix.Process.ByteString