[Bug 45935] Race condition in implementation of MoveFile, MoveFileEx, MoveFileWithProgress

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=45935

--- Comment #2 from Joshua <joshudson at gmail.com> ---
The program is generating an ordered list of unique files from multiple
processes by MoveFile with "1", "2", "3", etc*. until the MoveFile goes
through. The race condition exists because the implementation of MoveFile is
checking if the target exists, and calling rename() if it doesn't. If the other
process just did a rename to the same file in between the two system calls, one
of the files in the sequence will be lost. rename() clobbers the target name if
it exists.


*In fact it is timestamp_sequencenumber but the burst rate is several hundred
per second.

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