static INLINE aff_chunk_t *new_aff_chunk(co_mst_env_t *env) {
aff_chunk_t *c = xmalloc(sizeof(*c) + (env->n_regs - 1) * sizeof(c->color_affinity[0]));
c->n = NEW_ARR_F(const ir_node *, 0);
static INLINE aff_chunk_t *new_aff_chunk(co_mst_env_t *env) {
aff_chunk_t *c = xmalloc(sizeof(*c) + (env->n_regs - 1) * sizeof(c->color_affinity[0]));
c->n = NEW_ARR_F(const ir_node *, 0);