gcc/testsuite/g++.dg/cpp2a/no_unique_address14.C

// PR c++/105622
// { dg-do compile { target c++20 } }

struct empty {
  empty() = default;
  constexpr empty(int) { }
};

struct container {
  empty __begin_ = {};
  [[no_unique_address]] empty __size_ = 0;
};

constexpr bool test() {
  container s;
  return true;
}
static_assert(test());