lib/crypto: poly1305: Add at_least decoration to fixed-size array params

Add the at_least (i.e. 'static') decoration to the fixed-size array
parameters of the poly1305 library functions.  This causes clang to warn
when a too-small array of known size is passed.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: "Jason A. Donenfeld" <Jason@zx2c4.com>
Link: https://lore.kernel.org/r/20251122194206.31822-5-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

diff --git a/include/crypto/poly1305.h b/include/crypto/poly1305.h
index d4daeec8da19d84e3838085c3cdca86270acc2f1..190beb427c6dec4c4884df239017628e14d3c68d 100644 (file)
--- a/include/crypto/poly1305.h
+++ b/include/crypto/poly1305.h
@@ -59,7 +59,7 @@ struct poly1305_desc_ctx {
 };
 
 void poly1305_init(struct poly1305_desc_ctx *desc,
-                  const u8 key[POLY1305_KEY_SIZE]);
+                  const u8 key[at_least POLY1305_KEY_SIZE]);
 void poly1305_update(struct poly1305_desc_ctx *desc,
                     const u8 *src, unsigned int nbytes);
 void poly1305_final(struct poly1305_desc_ctx *desc, u8 *digest);