Reproducer: meson --werror --buildtype=debug build ninja -C build gcc version: gcc version 12.1.1 20220730 (GCC) (Archlinux) Log: ../lib/eventdev/rte_event_eth_rx_adapter.c: In function ‘rxa_intr_ring_dequeue’: ../lib/eventdev/rte_event_eth_rx_adapter.c:1213:34: note: destination object ‘qd’ of size 8 1213 | union queue_data qd = rx_adapter->qd; | ^~ In function ‘__rte_ring_dequeue_elems_128’, inlined from ‘__rte_ring_dequeue_elems’ at ../lib/ring/rte_ring_elem_pvt.h:262:3, inlined from ‘__rte_ring_do_hts_dequeue_elem’ at ../lib/ring/rte_ring_hts_elem_pvt.h:237:3, inlined from ‘rte_ring_mc_hts_dequeue_bulk_elem’ at ../lib/ring/rte_ring_hts.h:83:9, inlined from ‘rte_ring_dequeue_bulk_elem’ at ../lib/ring/rte_ring_elem.h:391:10, inlined from ‘rte_ring_dequeue_elem’ at ../lib/ring/rte_ring_elem.h:476:9, inlined from ‘rte_ring_dequeue’ at ../lib/ring/rte_ring.h:480:9, inlined from ‘rxa_intr_ring_dequeue’ at ../lib/eventdev/rte_event_eth_rx_adapter.c:1220:10: ../lib/ring/rte_ring_elem_pvt.h:234:25: error: ‘memcpy’ writing 32 bytes into a region of size 8 overflows the destination [-Werror=stringop-overflow=] 234 | memcpy((void *)(obj + i), (void *)(ring + idx), 32); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ../lib/eventdev/rte_event_eth_rx_adapter.c: In function ‘rxa_intr_ring_dequeue’: ../lib/eventdev/rte_event_eth_rx_adapter.c:1213:34: note: destination object ‘qd’ of size 8
Note, I squashed these and overead warnings with a workaround [1] for 21.11.3 as there is not yet a fix on main branch. https://git.dpdk.org/dpdk-stable/commit/?h=21.11&id=e1d728588dc73af9ed60cc0074d51a7f24b2ba60