Re: [PATCH] scsi: Replace zero-length array with flexible array member

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kernel test robot

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Nov 10, 2024, 2:57:48 PM11/10/24
to Thorsten Blum, Lee Duncan, Chris Leech, Mike Christie, James E.J. Bottomley, Martin K. Petersen, oe-kbu...@lists.linux.dev, linux-h...@vger.kernel.org, Thorsten Blum, open-...@googlegroups.com, linux...@vger.kernel.org, linux-...@vger.kernel.org
Hi Thorsten,

kernel test robot noticed the following build errors:

[auto build test ERROR on jejb-scsi/for-next]
[also build test ERROR on mkp-scsi/for-next linus/master v6.12-rc6 next-20241108]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Thorsten-Blum/scsi-Replace-zero-length-array-with-flexible-array-member/20241110-232327
base: https://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git for-next
patch link: https://lore.kernel.org/r/20241110151749.3311-2-thorsten.blum%40linux.dev
patch subject: [PATCH] scsi: Replace zero-length array with flexible array member
config: x86_64-rhel-8.3 (https://download.01.org/0day-ci/archive/20241111/202411110336...@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241111/202411110336...@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <l...@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411110336...@intel.com/

All errors (new ones prefixed by >>):

In file included from drivers/scsi/scsi_transport_iscsi.c:23:
>> include/scsi/scsi_bsg_iscsi.h:62:18: error: flexible array member in a struct with no named members
62 | uint32_t vendor_rsp[];
| ^~~~~~~~~~


vim +62 include/scsi/scsi_bsg_iscsi.h

57
58 /* Response:
59 */
60 struct iscsi_bsg_host_vendor_reply {
61 /* start of vendor response area */
> 62 uint32_t vendor_rsp[];
63 };
64
65

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

Gustavo A. R. Silva

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Nov 10, 2024, 4:06:51 PM11/10/24
to Thorsten Blum, Lee Duncan, Chris Leech, Mike Christie, James E.J. Bottomley, Martin K. Petersen, oe-kbu...@lists.linux.dev, linux-h...@vger.kernel.org, open-...@googlegroups.com, linux...@vger.kernel.org, linux-...@vger.kernel.org


> In file included from drivers/scsi/scsi_transport_iscsi.c:23:
>>> include/scsi/scsi_bsg_iscsi.h:62:18: error: flexible array member in a struct with no named members
> 62 | uint32_t vendor_rsp[];
> | ^~~~~~~~~~

This won't be an issue in the near future, but for now just use DECLARE_FLEX_ARRAY().

Thanks
--
Gustavo

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