From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
To: Kent Overstreet <kent.overstreet@linux.dev>,
Brian Foster <bfoster@redhat.com>
Cc: linux-bcachefs@vger.kernel.org, linux-kernel@vger.kernel.org,
"Gustavo A. R. Silva" <gustavoars@kernel.org>,
linux-hardening@vger.kernel.org
Subject: [PATCH][next] bcachefs: Use DECLARE_FLEX_ARRAY() helper and fix multiple -Warray-bounds warnings
Date: Mon, 6 Nov 2023 16:27:02 -0600 [thread overview]
Message-ID: <ZUloNt0HSulJgZNH@work> (raw)
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@kernel.org>
---
fs/bcachefs/subvolume_types.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/bcachefs/subvolume_types.h b/fs/bcachefs/subvolume_types.h
index 86833445af20..2d2e66a4e468 100644
--- a/fs/bcachefs/subvolume_types.h
+++ b/fs/bcachefs/subvolume_types.h
@@ -20,7 +20,7 @@ struct snapshot_t {
};
struct snapshot_table {
- struct snapshot_t s[0];
+ DECLARE_FLEX_ARRAY(struct snapshot_t, s);
};
typedef struct {
--
2.34.1
next reply other threads:[~2023-11-06 22:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-06 22:27 Gustavo A. R. Silva [this message]
2023-11-07 0:08 ` [PATCH][next] bcachefs: Use DECLARE_FLEX_ARRAY() helper and fix multiple -Warray-bounds warnings Kees Cook
2023-11-07 0:43 ` Kent Overstreet
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