From: kernel test robot <lkp(a)intel.com&gt; Zero-length and one-element arrays are deprecated, see Documentation/process/deprecated.rst Flexible-array members should be used instead. Generated by: scripts/coccinelle/misc/flexible_array.cocci Reported-by: kernel test robot <lkp(a)intel.com&gt; Signed-off-by: kernel test robot <lkp(a)intel.com&gt; Signed-off-by: Julia Lawall <julia.lawall(a)inria.fr&gt; --- tree: https://github.com/meghadey/crypto crypto-avx512 head: 9c8c2ca77f6e2575a130bddb9767d068e1162d71 commit: 377aede9f10ee28be954473668bc6d33c6c9db75 [5/6] crypto: aesni - AVX512 version of AESNI-GCM using VPCLMULQDQ :::::: branch date: 7 weeks ago :::::: commit date: 7 weeks ago aesni-intel_glue.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/crypto/aesni-intel_glue.c +++ b/arch/x86/crypto/aesni-intel_glue.c @@ -87,7 +87,7 @@ struct gcm_context_data { u64 partial_block_len; u64 unused; /* Allocate space for hash_keys later */ - u8 hash_keys[0]; + u8 hash_keys[]; }; asmlinkage int aesni_set_key(struct crypto_aes_ctx *ctx, const u8 *in_key,