On 2025/1/11 17:17, Krzysztof Kozlowski wrote:

quoted

const char security_prefix[] = "security-";
use 'sizeof(security_prefix) - 1' for the length of string.

Code is still not equivalent - just de-assemble it and you will see
some overhead.

Maybe just introduce builtin_strlen() to string.h and use such? It would
be the pretty obvious code.

strncmp(s1, "s2_string", builtin_strlen("s2_string")) is similar as
strncmp(s1, "s2_string", sizeof("s2_string") - 1).

so perhaps, it is not worthy of a new builtin_strlen().