Problem with userdata (metatable)

["Anders Bergh" <anders@...>]

Hi!

I'm using Lua 5.1 and I've been trying to add my own userdata type. It
works except I couldn't get methods working. I've been reading the
chapter in the first edition of pil and
http://lua-users.org/wiki/UserDataWithPointerExample.

Here's the code I use:

static const luaL_reg llua_user_f[] = {
  /* Functions */
  {"FindByNick", llua_user_FindByNick},

  /* Methods */
  {"GetNick", llua_user_GetNick},
  {NULL, NULL}
};

/* Metatable */
static const luaL_reg llua_user_m[] = {
  {"__tostring", llua_user_tostring},
  {NULL, NULL}
};

int lluaopen_user (lua_State *L) {
  luaL_openlib(L, "user", llua_user_f, 0);
  luaL_newmetatable(L, TYPE);
  luaL_openlib(L, 0, llua_user_m, 0); /* mt */

  lua_pushliteral(L, "__index");
  lua_pushvalue(L, -3);
  lua_rawset(L, -3);

  lua_pushliteral(L, "__metatable");
  lua_pushvalue(L, -3);
  lua_rawset(L, -3);

  lua_pop(L, 1);
  return 1;
}

When I use "user:GetNick()" in Lua, I get the error: attempt to index
field '?' (a nil value).

getmetatable(user) returns nil, tostring(user) returns "user:
0x815598c". What exactly am I doing wrong?

Anders