Function lua_newuserdatauv

extlibs/lua/src/lapi.c:1298–1308

LUA_API void *lua_newuserdatauv (lua_State *L, size_t size, int nuvalue) {
  Udata *u;
  lua_lock(L);
  api_check(L, 0 <= nuvalue && nuvalue < USHRT_MAX, "invalid value");
  u = luaS_newudata(L, size, nuvalue);
  setuvalue(L, s2v(L->top), u);
  api_incr_top(L);
  luaC_checkGC(L);
  lua_unlock(L);
  return getudatamem(u);
}