[issue20449] _overlapped: read_buffer and write_buffer are misused

STINNER Victor added the comment: Patch commited as 73dbb884eb09 in Python 3.4. (No need to backport, it's a new module in Python 3.4). Thanks for the review Richard. -- resolution: -> fixed status: open -> closed ___ Python tracker

[issue20449] _overlapped: read_buffer and write_buffer are misused

New submission from STINNER Victor: I found an issue in overlapped.c: read_buffer and write_buffer attributes are defined in an union, but they are sometimes use even if the type is not good. I found this issue while trying to get a BrokenPipeError on Windows when the stdin stream of a subproc