11 Nov
2014
11 Nov
'14
11:45 a.m.
On Mon, Nov 10, 2014 at 11:11 PM, Michael Jones
ec <- return $ encode command traceEventIO $ "sendCommand: encoded" l <- ec `seq` return $ BSL.length ec
Your encode function probably loops on some inputs. When you call "return $
foo", foo is not forced; that doesn't happen in your example until
BSL.length forces its input. If I'm right, changing the first line to
"return $! encode command" will move the hang to before the call to
traceEventIO.
--
Gregory Collins