[ ghc-Bugs-1187302 ] runProcess doesn't close handles?

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Bugs item #1187302, was opened at 2005-04-21 11:24
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Category: libraries/base
Group: 6.4
Status: Open
Resolution: None
Priority: 5
Submitted By: Roman Leshchinskiy (romanle)
Assigned to: Nobody/Anonymous (nobody)
Summary: runProcess doesn't close handles?

Initial Comment:
The documentation for runProcess says: "Any Handles
passed to runProcess are placed immediately in the
closed state, so may no longer be referenced by the
Haskell process." But

test =
  do
    h <- openFile "output" WriteMode
    ph <- runProcess "/bin/ls" [] Nothing Nothing
              Nothing (Just h) Nothing
    waitForProcess ph

main = test >> test >> return ()

aborts with "output: openFile: resource busy (file is
locked)" on the second call to test whereas 

test =
  do
    h <- openFile "output" WriteMode
    ph <- runProcess "/bin/ls" [] Nothing Nothing
              Nothing (Just h) Nothing
    hClose h
    waitForProcess ph

main = test >> test >> return ()

works fine.

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