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Date:   Fri, 4 Feb 2022 17:29:44 -0600
From:   "Gustavo A. R. Silva" <>
To:     Greg Kroah-Hartman <>
        "Gustavo A. R. Silva" <>,
Subject: [PATCH][next] staging: gdm724x: Replace one-element array with
 flexible-array member

There is a regular need in the kernel to provide a way to declare having
a dynamically sized set of trailing elements in a structure. Kernel code
should always use “flexible array members”[1] for these cases. The older
style of one-element or zero-length arrays should no longer be used[2].

This helps with the ongoing efforts to globally enable -Warray-bounds
and get us closer to being able to tighten the FORTIFY_SOURCE routines
on memcpy().

This issue was found with the help of Coccinelle and audited and fixed,


Signed-off-by: Gustavo A. R. Silva <>
 drivers/staging/gdm724x/hci_packet.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/gdm724x/hci_packet.h b/drivers/staging/gdm724x/hci_packet.h
index faecdfbc664f..3bb01e94f3b5 100644
--- a/drivers/staging/gdm724x/hci_packet.h
+++ b/drivers/staging/gdm724x/hci_packet.h
@@ -34,7 +34,7 @@ struct hci_packet {
 struct tlv {
 	u8 type;
 	u8 len;
-	u8 *data[1];
+	u8 *data[];
 } __packed;
 struct sdu_header {

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