[ ghc-Bugs-842445 ] Directory.renameFile broken under windows

Bugs item #842445, was opened at 2003-11-14 23:23
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Category: hslibs/posix
Group: 6.0.1
Status: Open
Resolution: None
Priority: 5
Submitted By: Peter Strand (pstrand)
Assigned to: Nobody/Anonymous (nobody)
Summary: Directory.renameFile broken under windows

Initial Comment:

According to the library report, renameFile should succed 
even if the target file already exists. Under windows it 
fails with:
 
Fail: already exists
Action: renameFile
Reason: File exists
File: foo

(ghc 6.0 and 6.0.1)

The reason seems to be that it uses the rename library 
call directly, which indeed fails if the target exists:

http://msdn.microsoft.com/library/default.asp?
url=/library/en-
us/vclib/html/_crt_rename.2c_._wrename.asp

A solution might involve MoveFileEx(old, new, 
MOVEFILE_REPLACE_EXISTING) ?

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