wifi: carl9170: Add __nonstring annotations for unterminated strings

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 <[email protected]>

Cc Johannes Berg <[email protected]>

Cc [email protected]

Signed-off-by Kees Cook <[email protected]>

---
  drivers/net/wireless/ath/carl9170/fw.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

drivers/net/wireless/ath/carl9170/fw.c +1 -1

index 4c1aecd1163c..419f5530f885 100644
@@ -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)

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.

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