On Jun 23, 2009, at 09:41 , Simon Marlow wrote:
main = do (ih, oh, _, _) <- runInteractiveProcess "cat" [] Nothing Nothing comphszp <- hGetContents oh print (length comphszp) -- hClose ih -- with this line they both deadlock
Note that you can trigger this in any language; it's a classic beginner error with pipes (see, for example, the documentation for open2/open3 in Perl or Python for other examples). Detecting this in the type system would be an interesting idea, but de facto I think this is a "it hurts when I do this".
-- brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allb...@kf8nh.com system administrator [openafs,heimdal,too many hats] allb...@ece.cmu.edu electrical and computer engineering, carnegie mellon university KF8NH
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