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-rw-r--r--testsuite/tests/stranal/should_compile/T19882a.hs10
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diff --git a/testsuite/tests/stranal/should_compile/T19882a.hs b/testsuite/tests/stranal/should_compile/T19882a.hs
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+++ b/testsuite/tests/stranal/should_compile/T19882a.hs
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+{-# LANGUAGE UnboxedTuples, MagicHash #-}
+
+module T19882a where
+
+import GHC.Exts
+
+f1 :: (# State# RealWorld, Int, Int #) -> Bool -> Int
+f1 x True = 1
+f1 x False = f1 x True
+