Elizabeth Figura (@zfigura) commented about dlls/ntdll/unix/socket.c:
+ rem_async->iov[0].iov_len = data_size; + for (i = 0; i < iov_count; ++i) + { + memcpy( p, iov[i].iov_base, iov[i].iov_len ); + p += iov[i].iov_len; + } + rem_async->unix_flags = async->unix_flags; + memcpy( p, async->addr, addr_size ); + rem_async->addr = (const struct WS_sockaddr *)p; + p += addr_size; + rem_async->addr_len = async->addr_len; + rem_async->iov_cursor = 0; + rem_async->sent_len = 0; + rem_io = (IO_STATUS_BLOCK *)p; + p += sizeof(IO_STATUS_BLOCK); + status = sock_send( handle, NULL, NULL, NULL, rem_io, fd, rem_async, TRUE ); This needs handling of wow64 IOSB like sync_ioctl().
-- https://gitlab.winehq.org/wine/wine/-/merge_requests/6490#note_82200