252   std::vector<Obj> to_erase;  in TEST()  local
255     to_erase.push_back(Obj(i, i));  in TEST()
257   to_erase.push_back(Obj(set.size() - 1, set.size() - 1));  // The last element.  in TEST()
258   to_erase.push_back(Obj(set.size(), set.size()));          // Not in the set.  in TEST()
261   while (!to_erase.empty()) {  in TEST()
262     size_t erased = set.erase(to_erase.back());  in TEST()
265       expected_total -= to_erase.back().val_;  in TEST()
268     to_erase.pop_back();  in TEST()
321   std::vector<Obj> to_erase;  in TEST()  local
324     to_erase.push_back(Obj(i, i));  in TEST()
326   to_erase.push_back(Obj(set.size() - 1, set.size() - 1));  // The last element.  in TEST()
327   to_erase.push_back(Obj(set.size(), set.size()));          // Not in the set.  in TEST()
330   while (!to_erase.empty()) {  in TEST()
331     size_t erased = set.erase(to_erase.back());  in TEST()
334       expected_total -= to_erase.back().val_;  in TEST()
337     to_erase.pop_back();  in TEST()