From: Adel Gadllah <adel.gadllah@gmail.com>
To: linux-kernel@vger.kernel.org
Subject: [PATCH] fix sparse problems with ARRAY_SIZE
Date: Tue, 10 Jul 2007 18:05:06 +0200 [thread overview]
Message-ID: <4693AE32.7030403@gmail.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 253 bytes --]
ARRAY_SIZE seems to create sparse warnings when used on global
variables. The attached patch fixes this by using a ARRAY_SIZE macro
that does not use __must_be_array(arr) for sparse.
See: http://marc.info/?t=118103449100007&r=1&w=2
P.S: please CC me
[-- Attachment #2: array_size_sparse_fix.patch --]
[-- Type: text/x-patch, Size: 727 bytes --]
Signed-off-by: Adel Gadllah <adel.gadllah@gmail.com>
diff -upNr linux-2.6.orig/include/linux/kernel.h linux-2.6/include/linux/kernel.h
--- linux-2.6.orig/include/linux/kernel.h 2007-07-10 17:53:39.000000000 +0200
+++ linux-2.6/include/linux/kernel.h 2007-07-10 18:01:30.000000000 +0200
@@ -35,7 +35,11 @@ extern const char linux_proc_banner[];
#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
+#ifdef __CHECKER_
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((x)[0]))
+#else
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
+#endif
#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
next reply other threads:[~2007-07-10 16:05 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-10 16:05 Adel Gadllah [this message]
2007-07-10 16:09 ` [PATCH] fix sparse problems with ARRAY_SIZE Adel Gadllah
2007-07-10 19:40 ` Alexey Dobriyan
2007-07-10 20:58 ` Al Viro
2007-07-10 22:40 ` Al Viro
2007-07-12 10:27 ` Adel Gadllah
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4693AE32.7030403@gmail.com \
--to=adel.gadllah@gmail.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox