CROSSES_HBLK      254 gc/dbg_mlc.c       GC_ASSERT(!(SMALL_OBJ(sz) && CROSSES_HBLK(p, sz)));
CROSSES_HBLK      288 gc/dbg_mlc.c       GC_ASSERT(!(SMALL_OBJ(sz) && CROSSES_HBLK(p, sz)));