[GHC] #891: hsc2hs tries to remove an open file

[Sigbjorn Finne]

This is a long standing, irksome Win32 timing issue, and is not
GC related (AFAICR, it was reproducible in straight C code).

A better workaround, which was experimented with in STABLE
at some point, is to simply delay the clean up of the files until
the end of hsc2hs's run

--sigbjorn

GHC wrote:
> #891: hsc2hs tries to remove an open file
> -------------------------+--------------------------------------------------
>     Reporter:  eivuokko  |        Owner:         
>         Type:  bug       |       Status:  new    
>     Priority:  normal    |    Milestone:         
>    Component:  Compiler  |      Version:  6.4.2  
>     Severity:  normal    |     Keywords:         
>           Os:  Windows   |   Difficulty:  Unknown
> Architecture:  Unknown   |  
> -------------------------+--------------------------------------------------
> hsc2hs sometimes fails with error "Permission denied" in Windows.  This is
>  because it tries to remove a file it has open handle to.  The error
>  usually repeats per-machine and file, but what file and machine it shows
>  up with, is random.
>
>  As a workaround, calls to removeFile can be removed, or exceptions
>  catched.
>
>  From a mail by Brian Smith:
>  http://www.haskell.org/pipermail/cvs-ghc/2006-September/031186.html
>
>   
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