Function test_stl_allocator2

3rd/mimalloc-2.0.9/test/test-api.c:321–330

struct some_struct  { int i; int j; double z; };

bool test_stl_allocator2() {
#ifdef __cplusplus
  std::vector<some_struct, mi_stl_allocator<some_struct> > vec;
  vec.push_back(some_struct());
  vec.pop_back();
  return vec.size() == 0;
#else
  return true;
#endif
}