[riot-notifications] [RIOT-OS/RIOT] cpu/esp_common: esp_now doesn't call memcpy if iol_len is 0 (#11187)

Martine Lenders notifications at github.com
Fri Mar 15 11:14:45 CET 2019

miri64 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);

But this is only true for GNRC. If another (hypothetical) stack does not necessarily provide this, this can lead to problems. Better document this in the [`esp-now` documentation](https://doc.riot-os.org/esp__now__netdev_8h.html) somewhere.

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