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Date: Mon, 6 Nov 2023 19:43:21 -0500
From: Kent Overstreet <kent.overstreet@...ux.dev>
To: "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc: Brian Foster <bfoster@...hat.com>, linux-bcachefs@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH][next] bcachefs: Use DECLARE_FLEX_ARRAY() helper and fix
 multiple -Warray-bounds warnings

On Mon, Nov 06, 2023 at 04:27:02PM -0600, Gustavo A. R. Silva wrote:
> Transform zero-length array `s` into a proper flexible-array
> member in `struct snapshot_table` via the DECLARE_FLEX_ARRAY()
> helper; and fix tons of the following -Warray-bounds warnings:
> 
> fs/bcachefs/snapshot.h:36:21: warning: array subscript <unknown> is outside array bounds of 'struct snapshot_t[0]' [-Warray-bounds=]
> fs/bcachefs/snapshot.h:36:21: warning: array subscript <unknown> is outside array bounds of 'struct snapshot_t[0]' [-Warray-bounds=]
> fs/bcachefs/snapshot.c:135:70: warning: array subscript <unknown> is outside array bounds of 'struct snapshot_t[0]' [-Warray-bounds=]
> fs/bcachefs/snapshot.h:36:21: warning: array subscript <unknown> is outside array bounds of 'struct snapshot_t[0]' [-Warray-bounds=]
> fs/bcachefs/snapshot.h:36:21: warning: array subscript <unknown> is outside array bounds of 'struct snapshot_t[0]' [-Warray-bounds=]
> fs/bcachefs/snapshot.h:36:21: warning: array subscript <unknown> is outside array bounds of 'struct snapshot_t[0]' [-Warray-bounds=]
> 
> This helps with the ongoing efforts to globally enable -Warray-bounds.
> 
> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>

Thanks, applied

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