[PATCH 1/2] net/i40e: compilation fix for GCC-12

Amit Prakash Shukla amitprakashs at marvell.com
Wed Aug 24 16:03:38 CEST 2022


GCC 12 raises the following warning:

meson --werror --buildtype=debugoptimized
	--cross-file config/x86/cross-mingw -Dexamples=helloworld build
ninja -C build

In function 'i40e_hash_get_pattern_type',
    inlined from 'i40e_hash_get_pattern_pctypes' at
../drivers/net/i40e/i40e_hash.c:520:8,
    inlined from 'i40e_hash_parse_pattern_act' at
../drivers/net/i40e/i40e_hash.c:1147:9,
    inlined from 'i40e_hash_parse' at
../drivers/net/i40e/i40e_hash.c:1181:9:
../drivers/net/i40e/i40e_hash.c:389:47:
	error: array subscript 53 is above array
	bounds of 'const uint64_t[53]'
	{aka 'const long long unsigned int[53]'} [-Werror=array-bounds]
  389 |                 item_hdr = pattern_item_header[last_item_type];
      |                            ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~
../drivers/net/i40e/i40e_hash.c: In function 'i40e_hash_parse':
../drivers/net/i40e/i40e_hash.c:182:23: note: while referencing
'pattern_item_header'
  182 | static const uint64_t pattern_item_header[] = {
      |                       ^~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

Fixes: ef4c16fd9148 (net/i40e: refactor RSS flow)
Cc: stable at dpdk.org

Signed-off-by: Amit Prakash Shukla <amitprakashs at marvell.com>
---
v2:
- Removed "examples/ipsec-secgw" patch from this series and posted it as
seperate patch.

 drivers/net/i40e/i40e_hash.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/i40e/i40e_hash.c b/drivers/net/i40e/i40e_hash.c
index 8962e9d97a..a1ff85fceb 100644
--- a/drivers/net/i40e/i40e_hash.c
+++ b/drivers/net/i40e/i40e_hash.c
@@ -384,8 +384,10 @@ i40e_hash_get_pattern_type(const struct rte_flow_item pattern[],
 		}
 
 		prev_item_type = last_item_type;
-		assert(last_item_type < (enum rte_flow_item_type)
-				RTE_DIM(pattern_item_header));
+		if (last_item_type >= (enum rte_flow_item_type)
+				RTE_DIM(pattern_item_header))
+			goto not_sup;
+
 		item_hdr = pattern_item_header[last_item_type];
 		assert(item_hdr);
 
-- 
2.25.1



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