Id stringpool_str2id(Stringpool *ss, const char *str, int create);
Id stringpool_strn2id(Stringpool *ss, const char *str, unsigned int len, int create);
Id stringpool_str2id(Stringpool *ss, const char *str, int create);
Id stringpool_strn2id(Stringpool *ss, const char *str, unsigned int len, int create);