checklimit
checklimit(ls->fs, nvars + ls->L->nCcalls, LUAI_MAXCCALLS,
checklimit(fs, dyd->actvar.n + 1 - fs->firstlocal,
checklimit(fs, fs->nups + 1, MAXUPVAL, "upvalues");
checklimit(ls->fs, L->nCcalls, LUAI_MAXCCALLS, "C levels");
checklimit(fs, cc->nh, MAX_INT, "items in a constructor");
checklimit(ls->fs, cc->na, MAX_INT, "items in a constructor");