diff mbox series

wifi: carl9170: Add __nonstring annotations for unterminated strings

Message ID 20250310222339.work.654-kees@kernel.org
State New
Headers show
Series wifi: carl9170: Add __nonstring annotations for unterminated strings | expand

Commit Message

Kees Cook March 10, 2025, 10:23 p.m. UTC
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]
Cc: Christian Lamparter <chunkeey@googlemail.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-wireless@vger.kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
---
 drivers/net/wireless/ath/carl9170/fw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Jeff Johnson March 17, 2025, 5:52 p.m. UTC | #1
On Mon, 10 Mar 2025 15:23:40 -0700, Kees Cook wrote:
> 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.
> 
> 
> [...]

Applied, thanks!

[1/1] wifi: carl9170: Add __nonstring annotations for unterminated strings
      commit: 9a1cf85c9c7cca15bfc452f207818977621dedf8

Best regards,
diff mbox series

Patch

diff --git a/drivers/net/wireless/ath/carl9170/fw.c b/drivers/net/wireless/ath/carl9170/fw.c
index 4c1aecd1163c..419f5530f885 100644
--- a/drivers/net/wireless/ath/carl9170/fw.c
+++ b/drivers/net/wireless/ath/carl9170/fw.c
@@ -15,7 +15,7 @@ 
 #include "fwcmd.h"
 #include "version.h"
 
-static const u8 otus_magic[4] = { OTUS_MAGIC };
+static const u8 otus_magic[4] __nonstring = { OTUS_MAGIC };
 
 static const void *carl9170_fw_find_desc(struct ar9170 *ar, const u8 descid[4],
 	const unsigned int len, const u8 compatible_revision)