On Sat, Feb 15, 2025 at 1:51 PM kernel test robot <lkp@intel.com> wrote:
>
> Hi Tamir,
>
> kernel test robot noticed the following build warnings:
>
> [auto build test WARNING on 7b7a883c7f4de1ee5040bd1c32aabaafde54d209]
>
> url:
https://github.com/intel-lab-lkp/linux/commits/Tamir-Duberstein/scanf-implicate-test-line-in-failure-messages/20250215-002302
> base:   7b7a883c7f4de1ee5040bd1c32aabaafde54d209
> patch link:
https://lore.kernel.org/r/20250214-scanf-kunit-convert-v8-3-5ea50f95f83c%40gmail.com
> patch subject: [PATCH v8 3/4] scanf: convert self-test to KUnit
> config: sh-randconfig-002-20250216 (
https://download.01.org/0day-ci/archive/20250216/202502160245.KUrryBJR-lkp@intel.com/config
)
> compiler: sh4-linux-gcc (GCC) 14.2.0
> reproduce (this is a W=1 build): (
https://download.01.org/0day-ci/archive/20250216/202502160245.KUrryBJR-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/202502160245.KUrryBJR-lkp@intel.com/
>
> All warnings (new ones prefixed by >>):
>
>    In file included from <command-line>:
>    lib/tests/scanf_kunit.c: In function 'numbers_list_ll':
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_ll'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:390:9: note: in expansion of macro
'numbers_list_8'
>      390 |         numbers_list_8(unsigned long long, "%llu",   delim,
"llu", check_ull);
>          |         ^~~~~~~~~~~~~~
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_ll'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:391:9: note: in expansion of macro
'numbers_list_8'
>      391 |         numbers_list_8(long long,          "%lld",   delim,
"lld", check_ll);
>          |         ^~~~~~~~~~~~~~
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_ll'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:392:9: note: in expansion of macro
'numbers_list_8'
>      392 |         numbers_list_8(long long,          "%lld",   delim,
"lli", check_ll);
>          |         ^~~~~~~~~~~~~~
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_ll'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:393:9: note: in expansion of macro
'numbers_list_8'
>      393 |         numbers_list_8(unsigned long long, "%llx",   delim,
"llx", check_ull);
>          |         ^~~~~~~~~~~~~~
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_ll'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:394:9: note: in expansion of macro
'numbers_list_8'
>      394 |         numbers_list_8(unsigned long long, "0x%llx", delim,
"llx", check_ull);
>          |         ^~~~~~~~~~~~~~
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_ll'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:395:9: note: in expansion of macro
'numbers_list_8'
>      395 |         numbers_list_8(long long,          "0x%llx", delim,
"lli", check_ll);
>          |         ^~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c: In function 'numbers_list_l':
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_l'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:400:9: note: in expansion of macro
'numbers_list_8'
>      400 |         numbers_list_8(unsigned long,      "%lu",    delim,
"lu", check_ulong);
>          |         ^~~~~~~~~~~~~~
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_l'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:401:9: note: in expansion of macro
'numbers_list_8'
>      401 |         numbers_list_8(long,               "%ld",    delim,
"ld", check_long);
>          |         ^~~~~~~~~~~~~~
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_l'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:402:9: note: in expansion of macro
'numbers_list_8'
>      402 |         numbers_list_8(long,               "%ld",    delim,
"li", check_long);
>          |         ^~~~~~~~~~~~~~
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_l'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:403:9: note: in expansion of macro
'numbers_list_8'
>      403 |         numbers_list_8(unsigned long,      "%lx",    delim,
"lx", check_ulong);
>          |         ^~~~~~~~~~~~~~
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_l'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:404:9: note: in expansion of macro
'numbers_list_8'
>      404 |         numbers_list_8(unsigned long,      "0x%lx",  delim,
"lx", check_ulong);
>          |         ^~~~~~~~~~~~~~
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_l'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:405:9: note: in expansion of macro
'numbers_list_8'
>      405 |         numbers_list_8(long,               "0x%lx",  delim,
"li", check_long);
>          |         ^~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c: In function 'numbers_list_d':
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_d'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:410:9: note: in expansion of macro
'numbers_list_8'
>      410 |         numbers_list_8(unsigned int,       "%u",     delim,
"u", check_uint);
>          |         ^~~~~~~~~~~~~~
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_d'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:411:9: note: in expansion of macro
'numbers_list_8'
>      411 |         numbers_list_8(int,                "%d",     delim,
"d", check_int);
>          |         ^~~~~~~~~~~~~~
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_d'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:412:9: note: in expansion of macro
'numbers_list_8'
>      412 |         numbers_list_8(int,                "%d",     delim,
"i", check_int);
>          |         ^~~~~~~~~~~~~~
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_d'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:413:9: note: in expansion of macro
'numbers_list_8'
>      413 |         numbers_list_8(unsigned int,       "%x",     delim,
"x", check_uint);
>          |         ^~~~~~~~~~~~~~
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_d'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:414:9: note: in expansion of macro
'numbers_list_8'
>      414 |         numbers_list_8(unsigned int,       "0x%x",   delim,
"x", check_uint);
>          |         ^~~~~~~~~~~~~~
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_d'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:415:9: note: in expansion of macro
'numbers_list_8'
>      415 |         numbers_list_8(int,                "0x%x",   delim,
"i", check_int);
>          |         ^~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c: In function 'numbers_list_h':
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_h'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:420:9: note: in expansion of macro
'numbers_list_8'
>      420 |         numbers_list_8(unsigned short,     "%hu",    delim,
"hu", check_ushort);
>          |         ^~~~~~~~~~~~~~
> >> include/linux/compiler.h:197:61: warning: function 'numbers_list_h'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:421:9: note: in expansion of macro
'numbers_list_8'
>      421 |         numbers_list_8(short,              "%hd",    delim,
"hd", check_short);
>          |         ^~~~~~~~~~~~~~
>    include/linux/compiler.h:197:61: warning: function 'numbers_list_h'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:422:9: note: in expansion of macro
'numbers_list_8'
>      422 |         numbers_list_8(short,              "%hd",    delim,
"hi", check_short);
>          |         ^~~~~~~~~~~~~~
>    include/linux/compiler.h:197:61: warning: function 'numbers_list_h'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>          |                                                             ^
>    include/linux/compiler_types.h:522:23: note: in definition of macro
'__compiletime_assert'
>      522 |                 if (!(condition))
         \
>          |                       ^~~~~~~~~
>    include/linux/compiler_types.h:542:9: note: in expansion of macro
'_compiletime_assert'
>      542 |         _compiletime_assert(condition, msg,
__compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:39:37: note: in expansion of macro
'compiletime_assert'
>       39 | #define BUILD_BUG_ON_MSG(cond, msg)
compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:50:9: note: in expansion of macro
'BUILD_BUG_ON_MSG'
>       50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: "
#condition)
>          |         ^~~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:9: note: in expansion of macro
'BUILD_BUG_ON'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |         ^~~~~~~~~~~~
>    include/linux/compiler.h:202:33: note: in expansion of macro
'__BUILD_BUG_ON_ZERO_MSG'
>      202 | #define __must_be_array(a)
__BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
>          |                                 ^~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/array_size.h:11:59: note: in expansion of macro
'__must_be_array'
>       11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) +
__must_be_array(arr))
>          |
 ^~~~~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:333:22: note: in expansion of macro
'ARRAY_SIZE'
>      333 |         BUILD_BUG_ON(ARRAY_SIZE(arr) != 8);
                 \
>          |                      ^~~~~~~~~~
>    lib/tests/scanf_kunit.c:356:9: note: in expansion of macro
'test_array_8'
>      356 |         test_array_8(fn, expect, test_buffer, fmt_buffer,
result);              \
>          |         ^~~~~~~~~~~~
>    lib/tests/scanf_kunit.c:423:9: note: in expansion of macro
'numbers_list_8'
>      423 |         numbers_list_8(unsigned short,     "%hx",    delim,
"hx", check_ushort);
>          |         ^~~~~~~~~~~~~~
>    include/linux/compiler.h:197:61: warning: function 'numbers_list_h'
might be a candidate for 'gnu_scanf' format attribute
[-Wsuggest-attribute=format]
>      197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct
{_Static_assert(!(e), msg);}))
>
>
> vim +197 include/linux/compiler.h
>
> 230fa253df6352a Christian Borntraeger 2014-11-25  193
> cb7380de9e4cbc9 Kees Cook             2025-02-05  194  #ifdef __CHECKER__
> cb7380de9e4cbc9 Kees Cook             2025-02-05  195  #define
__BUILD_BUG_ON_ZERO_MSG(e, msg) (0)
> cb7380de9e4cbc9 Kees Cook             2025-02-05  196  #else /*
__CHECKER__ */
> cb7380de9e4cbc9 Kees Cook             2025-02-05 @197  #define
__BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct {_Static_assert(!(e),
msg);}))
> cb7380de9e4cbc9 Kees Cook             2025-02-05  198  #endif /*
__CHECKER__ */
> cb7380de9e4cbc9 Kees Cook             2025-02-05  199
>
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki

I am not able to reproduce these warnings with clang 19.1.7. They also
don't obviously make sense to me.