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From: Thomas Monjalon <thomas@monjalon.net>
To: Rahul Bhansali <rbhansali@marvell.com>, Akhil Goyal <gakhil@marvell.com>
Cc: dev@dpdk.org, ruifeng.wang@arm.com, honnappa.nagarahalli@arm.com
Subject: DPDK build for Arm with GCC 12
Date: Tue, 04 Oct 2022 14:46:30 +0200
Message-ID: <5990131.2l3rmUXbR5@thomas>
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Errors-To: dev-bounces@dpdk.org
Hello,
GCC 12 suspects an out-of-bound write in NEON port_groupx4():
In file included from examples/ipsec-secgw/ipsec_neon.h:9,
from examples/ipsec-secgw/ipsec_lpm_neon.h:9,
from examples/ipsec-secgw/ipsec_worker.c:16:
examples/common/neon/port_group.h: In function 'port_groupx4':
examples/common/neon/port_group.h:42:21: error:
array subscript 'union <anonymous>[0]' is partly outside
array bounds of 'uint16_t[5]'
42 | pnum->u64 = gptbl[v].pnum;
| ^~
examples/common/neon/port_group.h:21:23: note:
object 'pn' of size [0, 10]
21 | port_groupx4(uint16_t pn[FWDSTEP + 1], uint16_t *lp, uint16x8_t dp1,
| ~~~~~~~~~^~~~~~~~~~~~~~~
examples/common/neon/port_group.h:43:21: error:
array subscript 'union <anonymous>[0]' is partly outside
array bounds of 'uint16_t[5]'
43 | pnum->u16[FWDSTEP] = 1;
| ^~
examples/common/neon/port_group.h:21:23: note:
object 'pn' of size [0, 10]
21 | port_groupx4(uint16_t pn[FWDSTEP + 1], uint16_t *lp, uint16x8_t dp1,
| ~~~~~~~~~^~~~~~~~~~~~~~~
Please could you help fixing it?