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-rw-r--r--testsuite/tests/stranal/should_compile/T19882b.hs9
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diff --git a/testsuite/tests/stranal/should_compile/T19882b.hs b/testsuite/tests/stranal/should_compile/T19882b.hs
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+++ b/testsuite/tests/stranal/should_compile/T19882b.hs
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+{-# LANGUAGE UnboxedTuples, MagicHash #-}
+
+module T19882b where
+
+import GHC.Exts
+
+f2 :: (# State# RealWorld, Int #) -> Bool -> Int
+f2 x True = 1
+f2 x False = f2 x True