#9775: "Failed to remove" errors during Windows build from hsc2hs -------------------------------------+------------------------------------- Reporter: gintas | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Build | Version: 7.8.3 System | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: Windows | Difficulty: Unknown Type of failure: | Blocked By: None/Unknown | Related Tickets: Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by gintas): Looks like this is an old issue, all the way back from 2006, see here: http://web.archiveorange.com/archive/v/j7U5ds4Ozu7dvDiQLdtl The code that spews the error is already trying to work around the issue, but fails, it just does not break the build process. On the bright side, this particular error is not harmful, the outcome is just that a temporary file does not get deleted. Relevant code: {{{ -- delay the cleanup of generated files until the end; attempts to -- get around intermittent failure to delete files which has -- just been exec'ed by a sub-process (Win32 only.) finallyRemove :: FilePath -> IO a -> IO a finallyRemove fp act = bracket_ (return fp) (const $ noisyRemove fp) act where noisyRemove fpath = catch (removeFile fpath) (\ e -> hPutStrLn stderr ("Failed to remove file " ++ fpath ++ "; error= " ++ show e)) }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9775#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler