[Bug 19491] New: WSASend() fails when lpNumberOfBytesSent is NULL

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=19491

           Summary: WSASend() fails when lpNumberOfBytesSent is NULL
           Product: Wine
           Version: 1.1.26
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: winsock
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: arzwine at yahoo.com


WSASend() returns an error when lpNumberOfBytesSent (which is an output
parameter) is NULL. There is a condition in WSASendTo() in ws2_32/socket.c
which returns an EFAULT when lpNumberOfBytesSent is a NULL pointer.

While this makes sense, setting this argument to NULL is explicitly allowed by
the MSDN documentation, if the lpOverlapped parameter is present.

Not immediately clear how to fix this, since it involves checking how
overlapped i/o and i/o completion play out.

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