[EXT] DPDK build for Arm with GCC 12

[Thomas Monjalon]

06/10/2022 08:14, Rahul Bhansali:
> Hi Thomas,
> 
> > -----Original Message-----
> > From: Thomas Monjalon <thomas at monjalon.net>
> > Sent: Tuesday, October 4, 2022 6:17 PM
> > To: Rahul Bhansali <rbhansali at marvell.com>; Akhil Goyal
> > <gakhil at marvell.com>
> > Cc: dev at dpdk.org; ruifeng.wang at arm.com; honnappa.nagarahalli at arm.com
> > Subject: [EXT] DPDK build for Arm with GCC 12
> > 
> > External Email
> > 
> > ----------------------------------------------------------------------
> > 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?
> This is already addressed in http://patches.dpdk.org/project/dpdk/patch/20220902074337.3129786-1-amitprakashs@marvell.com/ by @Amit Prakash Shukla .

Yes thank you.