[efi:next 14/16] drivers/firmware/efi/libstub/file.c:221:3: warning: label followed by a declaration is a C23 extension

[efi:next 14/16] drivers/firmware/efi/libstub/file.c:221:3: warning: label followed by a declaration is a C23 extension

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git next
head:   8e060452c658e09ce7bcdeaa19dc080d74176a56
commit: 257f826a691aa9eff8767f0ca5b82a3368b3d02a [14/16] efi/libstub: Fix command line fallback handling when loading files
config: arm-randconfig-002-20241117 (https://download.01.org/0day-ci/archive/20241117/202411171305.mtelLSJK-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 592c0fe55f6d9a811028b5f3507be91458ab2713)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241117/202411171305.mtelLSJK-lkp@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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411171305.mtelLSJK-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/firmware/efi/libstub/file.c:11:
   In file included from arch/arm/include/asm/efi.h:9:
   In file included from arch/arm/include/asm/cacheflush.h:10:
   In file included from include/linux/mm.h:2213:
   include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     518 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
>> drivers/firmware/efi/libstub/file.c:221:3: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
     221 |                 static const efi_char16_t builtin_cmdline[] = L"" CONFIG_CMDLINE;
         |                 ^
   2 warnings generated.


vim +221 drivers/firmware/efi/libstub/file.c

   177	
   178	/*
   179	 * Check the cmdline for a LILO-style file= arguments.
   180	 *
   181	 * We only support loading a file from the same filesystem as
   182	 * the kernel image.
   183	 */
   184	efi_status_t handle_cmdline_files(efi_loaded_image_t *image,
   185					  const efi_char16_t *optstr,
   186					  int optstr_size,
   187					  unsigned long soft_limit,
   188					  unsigned long hard_limit,
   189					  unsigned long *load_addr,
   190					  unsigned long *load_size)
   191	{
   192		const bool ignore_load_options = false;
   193		const efi_char16_t *cmdline = efi_table_attr(image, load_options);
   194		u32 cmdline_len = efi_table_attr(image, load_options_size);
   195		unsigned long efi_chunk_size = ULONG_MAX;
   196		efi_file_protocol_t *volume = NULL;
   197		efi_file_protocol_t *file;
   198		unsigned long alloc_addr;
   199		unsigned long alloc_size;
   200		efi_status_t status;
   201		bool twopass;
   202		int offset;
   203	
   204		if (!load_addr || !load_size)
   205			return EFI_INVALID_PARAMETER;
   206	
   207		efi_apply_loadoptions_quirk((const void **)&cmdline, &cmdline_len);
   208		cmdline_len /= sizeof(*cmdline);
   209	
   210		if (IS_ENABLED(CONFIG_X86) && !efi_nochunk)
   211			efi_chunk_size = EFI_READ_CHUNK_SIZE;
   212	
   213		alloc_addr = alloc_size = 0;
   214	
   215		if (!ignore_load_options && cmdline_len > 0) {
   216			twopass = IS_ENABLED(CONFIG_CMDLINE_BOOL) ||
   217				  IS_ENABLED(CONFIG_CMDLINE_EXTEND);
   218		} else {
   219	do_builtin:
   220	#ifdef CONFIG_CMDLINE
 > 221			static const efi_char16_t builtin_cmdline[] = L"" CONFIG_CMDLINE;

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