Function getGlobalTable

third-party/lua-5.5.0/src/lapi.c:691–696

** The following function assumes that the registry cannot be a weak ** table; so, an emergency collection while using the global table ** cannot collect it. */

** cannot collect it.
*/
static void getGlobalTable (lua_State *L, TValue *gt) {
  Table *registry = hvalue(&G(L)->l_registry);
  lu_byte tag = luaH_getint(registry, LUA_RIDX_GLOBALS, gt);
  (void)tag;  /* avoid not-used warnings when checks are off */
  api_check(L, novariant(tag) == LUA_TTABLE, "global table must exist");
}


LUA_API int lua_getglobal (lua_State *L, const char *name) {