When a character array without a terminating NUL character has a static
initializer, GCC 15's -Wunterminated-string-initialization will only
warn if the array lacks the "nonstring" attribute[1]. Mark the arrays
with __nonstring to and correctly identify the char array as "not a C
string" and thereby eliminate the warning.
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117178 [1]
Signed-off-by: Kees Cook <kees@kernel.org>
---
v1: https://lore.kernel.org/lkml/20250310222318.work.395-kees@kernel.org/
v2: correctly split and fix subject
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: En-Wei Wu <en-wei.wu@canonical.com>
Cc: Kalle Valo <kvalo@kernel.org>
Cc: linux-wireless@vger.kernel.org
---
drivers/net/wireless/virtual/virt_wifi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/virtual/virt_wifi.c b/drivers/net/wireless/virtual/virt_wifi.c
index 4ee374080466..fc122b79301a 100644
--- a/drivers/net/wireless/virtual/virt_wifi.c
+++ b/drivers/net/wireless/virtual/virt_wifi.c
@@ -146,7 +146,7 @@ static void virt_wifi_inform_bss(struct wiphy *wiphy)
static const struct {
u8 tag;
u8 len;
- u8 ssid[8];
+ u8 ssid[8] __nonstring;
} __packed ssid = {
.tag = WLAN_EID_SSID,
.len = VIRT_WIFI_SSID_LEN,
--
2.34.1