Class no_allocate_allocator

test/regressions.cpp:74–98

template <typename T>
struct no_allocate_allocator {
  using value_type = T;
  using size_type = size_t;
  using pointer = value_type*;
  using const_pointer = const value_type*;

  no_allocate_allocator() = default;
  template <typename O>
  no_allocate_allocator(no_allocate_allocator<O>) {
  }

  template <typename M>
  struct rebind {
    typedef no_allocate_allocator<M> other;
  };

  pointer allocate(size_type, void const* = nullptr) {
    EXPECT_TRUE(false);
    return nullptr;
  }

  void deallocate(pointer, size_type) {
    FAIL();
  }
};

TEST(regression_tests, can_take_capacity_obj) {
  fu2::function_base<true, true, fu2::capacity_can_hold<trash_obj>, false, true,