On 10/9/23 04:28, Maciej Wieczor-Retman wrote:
Kselftest.h declares many variadic functions that can print some formatted message while also executing selftest logic. These declarations don't have any compiler mechanism to verify if passed arguments are valid in comparison with format specifiers used in printf() calls. Attribute addition can make debugging easier, the code more consistent and prevent mismatched or missing variables. Add a __printf() macro that validates types of variables passed to the format string. The macro is similarly used in other tools in the kernel. Add __printf() attributes to function definitions inside kselftest.h that use printing. Adding the __printf() macro exposes some mismatches in format strings across different selftests. Fix the mismatched format specifiers in multiple tests. Series is based on kselftests next branch.
How did you find these problems? I don't see any information how these problems are found in the commit logs. thanks, -- Shuah
