B2SIZE
validate_junk(d, p, B2SIZE(bucket));
fill_canary(p, size, B2SIZE(bucket));
B2SIZE(info->bucket));
if (B2SIZE(info->bucket) != sz)
fill_canary(p, newsz, B2SIZE(info->bucket));
B2SIZE(p->bucket), p->free, p->total);
size_t i, sz = B2SIZE(p->bucket);
(sz) = ((sz) == 0 ? (r)->size : B2SIZE((sz) - 1))