CClosure
CClosure *f = clCvalue(fi);
CClosure *f = clCvalue(fi);
CClosure *func = clCvalue(ci->func);
#define sizeCclosure(n) (cast(int, sizeof(CClosure)) + \
static lu_mem traverseCclosure (global_State *g, CClosure *cl) {
CClosure *cl = gco2ccl(o);
CClosure c;