#3231: Permission denied error with runProcess/openFile
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Reporter: NeilMitchell | Owner: igloo
Type: bug | Status: reopened
Priority: normal | Milestone: 6.10.4
Component: Runtime System | Version: 6.10.4
Severity: normal | Resolution:
Keywords: | Difficulty: Unknown
Testcase: | Os: Windows
Architecture: Unknown/Multiple |
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Changes (by yugr):
* status: closed => reopened
* type: merge => bug
* version: 6.10.2 => 6.10.4
* resolution: fixed =>
* severity: major => normal
Comment:
I think the problem remains. This
module Main where
import System
import System.IO
import System.Process
import System.Directory
import Control.Monad
import Data.List
tempFile = "mytempfile.txt"
run :: FilePath -> IO String
run exe = do
h <- openFile tempFile WriteMode
pid <- runProcess exe [] Nothing Nothing Nothing (Just h) (Just h)
exitCode <- waitForProcess pid
hClose h
if exitCode /= ExitSuccess
then error $ exe ++ " failed"
else do
readFile tempFile
main = replicateM_ 10 (run "dir")
gives me
*** Exception: mytempfile.txt: openFile: permission denied (Permission
denied)
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3231#comment:25>
GHC <http://www.haskell.org/ghc/>
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