https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61421
--- Comment #18 from mimamer at gmail dot com ---
Ah? I didn't figure that was allowed per strict aliasing rules. But it still
doesn't solve one problem:
inline T *dequeue() {
node *head = anchor.next;
anchor.next = head->next;
head->next->prev = &anchor;
return (T *)head;
};
The last typecast is invalid when the list is empty and thus returns the
anchor, a special element that so far I checked with equality to list2::end():
inline T* end() const { return (T *)&anchor; }
But it is a huge step forward as checking for an empty list in dequeue() is
just ok so as to return NULL instead of the anchor.
