-void sglua_stack_dump(lua_State* L, const char* msg);
-static int sglua_dump_table(lua_State* L);
-void* sglua_checkudata_debug(lua_State* L, int ud, const char* tname);
-const char* sglua_get_spaces(int length);
-int sglua_memory_writer(lua_State* L, const void* source, size_t size, void* userdata);
-}