| // PR c++/89336 |
| // { dg-do compile { target c++14 } } |
| |
| template <typename T, int N> struct A { |
| T a[N]; |
| constexpr T &operator[] (int x) { return a[x]; } |
| constexpr const T &operator[] (int x) const { return a[x]; } |
| }; |
| |
| constexpr A<int, 16> |
| foo () |
| { |
| A<int, 16> r{}; |
| for (int i = 0; i < 6; ++i) |
| r[i + 8] = r[i] = i + 1; |
| return r; |
| } |
| |
| constexpr auto x = foo (); |
| static_assert (x[0] == 1, ""); |
| static_assert (x[1] == 2, ""); |
| static_assert (x[2] == 3, ""); |
| static_assert (x[3] == 4, ""); |
| static_assert (x[4] == 5, ""); |
| static_assert (x[5] == 6, ""); |
| static_assert (x[6] == 0, ""); |
| static_assert (x[7] == 0, ""); |
| static_assert (x[8] == 1, ""); |
| static_assert (x[9] == 2, ""); |
| static_assert (x[10] == 3, ""); |
| static_assert (x[11] == 4, ""); |
| static_assert (x[12] == 5, ""); |
| static_assert (x[13] == 6, ""); |
| static_assert (x[14] == 0, ""); |
| static_assert (x[15] == 0, ""); |
