Function clearkey

third-party/lua-5.4.6/src/lgc.c:171–175

** Clear keys for empty entries in tables. If entry is empty, mark its ** entry as dead. This allows the collection of the key, but keeps its ** entry in the table: its removal could break a chain and could break ** a table traversal. Other places never manipulate dead keys, because ** its associated empty value is enough to signal that the entry is ** logically empty. */

** logically empty.
*/
static void clearkey (Node *n) {
  lua_assert(isempty(gval(n)));
  if (keyiscollectable(n))
    setdeadkey(n);  /* unused key; remove it */
}


/*