[Bug 19561] Very large memory leak when doing overlapped reads

http://bugs.winehq.org/show_bug.cgi?id=19561

--- Comment #3 from Ron Fischler   2009-08-03 23:39:10 ---
Dear Dmitry,

I don't know for sure if it is in wineserver, and even if it is I certainly do
not know where - I have never looked through WINE code before, and I would not
know where to look. However, if we use readfile() without the overlappedRead
option the program works fine, and there is no growth in wineserver's heap.
When overlappedRead is used with readfile(), winserver's heap grows at a
fantastic rate (about 84K bytes with each read, even if only a few bytes are
being read each time.)

Additionally, the program source provided in the attachment has been set up
with no buffering, and yet readfile() is still returning data in blocks of
approximately 400 bytes, so there appears to be a buffering layer of some kind
down below that I suspect could be related to the memory leak.

Best Regards,
Ron