/*
The main problem of c strlen is that stops at first null character, returning wrong size especially in serialized data when
many null characters exists within your data. You just need to pass the pointer to char * as well as the memory allocated size
as second parameter (max). This method just walks from the maximum memory address to the minimum and stops the loop when the
first non null character appears. Then returns the real data length.
*/

size_t better_strlen(const char * str, int max) {
    const char * maxs;
    maxs = str + max;

    while(str<maxs) {
      if(*maxs!=0) break;
      maxs--;
    }

    return(maxs-str)+1;
}