[riot-notifications] [RIOT-OS/RIOT] cpu/esp_common: esp_now doesn't call memcpy if iol_len is 0 (#11187)
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Fri Mar 15 10:41:06 CET 2019
gschorcht commented on this pull request.
> @@ -652,11 +652,11 @@ static int _send(netdev_t *netdev, const iolist_t *iolist)
data_len + iolist->iol_len, ESP_NOW_MAX_SIZE_RAW);
It is guaranteed because this part of the `iol_list` is created and filled by https://github.com/RIOT-OS/RIOT/blob/71204d1d7034b642d310604d0bc9ec4fe634f414/cpu/esp_common/esp-now/esp_now_gnrc.c#L69-L73 as variable on stack before it calls esp_now_netdev::_send with the `iol_list`.
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