strset__new
set = strset__new(BTF_MAX_STR_OFFSET, btf->strs_data, btf->hdr->str_len);
d->strs_set = strset__new(BTF_MAX_STR_OFFSET, NULL, 0);
linker->strtab_strs = strset__new(INT_MAX, "", sizeof(""));
struct strset *strset__new(size_t max_data_sz, const char *init_data, size_t init_data_sz);