Starting with gcc10, gcc issues a warning about accessing elements of
zero leghth arrays. This is usually fixed by using C99 variable length
arrays but struct ethtool_sset_info is part of kernel UAPI so use an
auxiliary pointer instead.
Signed-off-by: Michal Kubecek <mkube...@suse.cz>
---
ethtool.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/ethtool.c b/ethtool.c
index 0f312bdae2bb..c4ad186cd390 100644
--- a/ethtool.c
+++ b/ethtool.c
@@ -1632,7 +1632,9 @@ get_stringset(struct cmd_context *ctx, enum
ethtool_stringset set_id,
sset_info.hdr.reserved = 0;
sset_info.hdr.sset_mask = 1ULL << set_id;
if (send_ioctl(ctx, &sset_info) == 0) {
- len = sset_info.hdr.sset_mask ? sset_info.hdr.data[0] : 0;
+ const u32 *sset_lengths = sset_info.hdr.data;
+
+ len = sset_info.hdr.sset_mask ? sset_lengths[0] : 0;
} else if (errno == EOPNOTSUPP && drvinfo_offset != 0) {
/* Fallback for old kernel versions */
drvinfo.cmd = ETHTOOL_GDRVINFO;
--
2.28.0
