linux-hardening - [PATCH] crypto: zstd - replace zero-length array with flexible array member

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Message-ID: <20250703171933.253654-2-thorsten.blum@linux.dev>
Date: Thu,  3 Jul 2025 19:19:34 +0200
From: Thorsten Blum <thorsten.blum@...ux.dev>
To: Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>,
	Nick Terrell <terrelln@...com>,
	David Sterba <dsterba@...e.com>
Cc: linux-hardening@...r.kernel.org,
	Thorsten Blum <thorsten.blum@...ux.dev>,
	linux-crypto@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] crypto: zstd - replace zero-length array with flexible array member

Replace the deprecated zero-length array with a modern flexible array
member in the struct zstd_ctx.

No functional changes intended.

Link: https://github.com/KSPP/linux/issues/78
Signed-off-by: Thorsten Blum <thorsten.blum@...ux.dev>
---
 crypto/zstd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crypto/zstd.c b/crypto/zstd.c
index 657e0cf7b952..c489976c3e8b 100644
--- a/crypto/zstd.c
+++ b/crypto/zstd.c
@@ -25,7 +25,7 @@ struct zstd_ctx {
 	zstd_dctx *dctx;
 	size_t wksp_size;
 	zstd_parameters params;
-	u8 wksp[0] __aligned(8);
+	u8 wksp[] __aligned(8);
 };
 
 static DEFINE_MUTEX(zstd_stream_lock);
-- 
2.50.0