253   std::vector<Obj> to_erase;  in TEST()  local
256     to_erase.push_back(Obj(i, i));  in TEST()
258   to_erase.push_back(Obj(set.size() - 1, set.size() - 1));  // The last element.  in TEST()
259   to_erase.push_back(Obj(set.size(), set.size()));          // Not in the set.  in TEST()
262   while (!to_erase.empty()) {  in TEST()
263     size_t erased = set.erase(to_erase.back());  in TEST()
266       expected_total -= to_erase.back().val_;  in TEST()
269     to_erase.pop_back();  in TEST()
322   std::vector<Obj> to_erase;  in TEST()  local
325     to_erase.push_back(Obj(i, i));  in TEST()
327   to_erase.push_back(Obj(set.size() - 1, set.size() - 1));  // The last element.  in TEST()
328   to_erase.push_back(Obj(set.size(), set.size()));          // Not in the set.  in TEST()
331   while (!to_erase.empty()) {  in TEST()
332     size_t erased = set.erase(to_erase.back());  in TEST()
335       expected_total -= to_erase.back().val_;  in TEST()
338     to_erase.pop_back();  in TEST()