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This allows the compiler to check the arguments against the __printf() attribute on __test(). This produces better diagnostics when incorrect inputs are passed. Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202512061600.89CKQ3ag-lkp@intel.com/ Signed-off-by: Tamir Duberstein <tamird@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20260121-printf-kunit-printf-attr-v3-1-4144f337ec8b@kernel.org Signed-off-by: Petr Mladek <pmladek@suse.com>