444 struct MyData {  struct
448   explicit MyData(int d) : data(d) {}  in MyData()  function
449   MyData(const MyData& other) : data(other.data) { copy_constructed++; }  in MyData()  function
450   MyData(MyData&& other) : data(other.data) { move_constructed++; }  in MyData()  function
451   MyData& operator=(const MyData&) = delete;
452   MyData& operator=(MyData&&) = delete;
455 int MyData::copy_constructed = 0;
456 int MyData::move_constructed = 0;
459   MyData::copy_constructed = 0;  in TEST()
460   MyData::move_constructed = 0;  in TEST()
461   auto f = []() -> Result<MyData> { return MyData{10}; };  in TEST()
466     EXPECT_EQ(0, MyData::copy_constructed);  in TEST()
469     EXPECT_EQ(2, MyData::move_constructed);  in TEST()