drivers/md/dm-writecache.c:76:24-31: WARNING use flexible-array member instead (https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays)

drivers/md/dm-writecache.c:76:24-31: WARNING use flexible-array member instead (https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays)

[kernel test robot]

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CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Denis Efremov <efremov@linux.com>
CC: Julia Lawall <Julia.Lawall@lip6.fr>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   e0756cfc7d7cd08c98a53b6009c091a3f6a50be6
commit: 7b36c1398fb63f9c38cc83dc75f143d2e5995062 coccinelle: misc: add flexible_array.cocci script
date:   4 months ago
:::::: branch date: 2 days ago
:::::: commit date: 4 months ago
config: sparc-randconfig-c003-20210209 (attached as .config)
compiler: sparc64-linux-gcc (GCC) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@lip6.fr>


"coccinelle warnings: (new ones prefixed by >>)"
>> drivers/md/dm-writecache.c:76:24-31: WARNING use flexible-array member instead (https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays)

Please review and possibly fold the followup patch.

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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[PATCH] coccinelle: misc: fix flexible_array.cocci warnings

[kernel test robot]

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CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Denis Efremov <efremov@linux.com>
CC: Julia Lawall <Julia.Lawall@lip6.fr>
CC: Alasdair Kergon <agk@redhat.com>
CC: Mike Snitzer <snitzer@redhat.com>
CC: dm-devel(a)redhat.com
CC: linux-kernel(a)vger.kernel.org

From: kernel test robot <lkp@intel.com>

drivers/md/dm-writecache.c:76:24-31: WARNING use flexible-array member instead (https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays)


 Zero-length and one-element arrays are deprecated, see
 Documentation/process/deprecated.rst
 Flexible-array members should be used instead.

Generated by: scripts/coccinelle/misc/flexible_array.cocci

Fixes: 7b36c1398fb6 ("coccinelle: misc: add flexible_array.cocci script")
CC: Denis Efremov <efremov@linux.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
---

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   e0756cfc7d7cd08c98a53b6009c091a3f6a50be6
commit: 7b36c1398fb63f9c38cc83dc75f143d2e5995062 coccinelle: misc: add flexible_array.cocci script
:::::: branch date: 2 days ago
:::::: commit date: 4 months ago

Please take the patch only if it's a positive warning. Thanks!

 dm-writecache.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/md/dm-writecache.c
+++ b/drivers/md/dm-writecache.c
@@ -73,7 +73,7 @@ struct wc_memory_superblock {
 		};
 		__le64 padding[8];
 	};
-	struct wc_memory_entry entries[0];
+	struct wc_memory_entry entries[];
 };
 
 struct wc_entry {