Comparing null-terminated string with a non null-terminated string in C

Question

The deserialization library (messagepack) I am using does not provide null-terminated strings. Instead, I get a pointer to the beginning of the string and a length. What is the

Answer 1

Here is one way:

bool is_same_string(char const *s1, char const *s2, size_t s2_len)
{
    char const *s2_end = s2 + s2_len;
    for (;;)
    {
        if ( s1[0] == 0 || s2 == s2_end )
            return s1[0] == 0 && s2 == s2_end;

        if ( *s1++ != *s2++ )
            return false;
    }
}