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Merged
merged 1 commit into from
Oct 22, 2019
Merged

testsuite: Add test for ghc#16707 #24

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20 changes: 20 additions & 0 deletions tests/T16707.hs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,20 @@
import Control.Concurrent
import Control.Concurrent.STM
import Debug.Trace

main :: IO ()
main = (`mapM_` [1..1000]) $ \_ -> do
traceEventIO "(((("

x <- newTVarIO False

forkIO $ atomically $ writeTVar x True

traceEventIO "----"

atomically $ do -- hangs in the second iteration
_ <- readTVar x
writeTVar x True `orElse` return ()

threadDelay 100000
traceEventIO "))))"
1 change: 1 addition & 0 deletions tests/all.T
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Expand Up @@ -26,3 +26,4 @@ test('stm065', normal, compile_and_run, ['-package stm'])
test('cloneTChan001', normal, compile_and_run, ['-package stm'])

test('T15136', extra_run_opts('20'), compile_and_run, ['-package stm'])
test('T16707', normal, compile_and_run, [''])