Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/tests/conformance98/foreign/testunsafe/Main.hs

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Distributed under the MIT License.
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module Main where

import NHC.Internal (unsafePerformIO)

testIO :: Int -> Int
testIO a = unsafePerformIO $
  do putStrLn "Inside testIO"
     putStrLn ("Returning "++show a)
     return a

main = do
  let val1 = testIO 1
  let val2 = testIO 2
  putStrLn ("Here is value 1: "++show val1)
  putStrLn ("Here is value 2: "++show val2)
  putStrLn ("Here is value 1: "++show val1)
  putStrLn ("Here is value 2: "++show val2)

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