| // { dg-do compile { target c++14 } } |
| |
| // PR c++/78551 ICE in constexpr evaluation overwriting array |
| // intialized by string constant. |
| |
| constexpr char Foo (char x, int ix) |
| { |
| char d[4] = "012"; |
| d[0] = x; |
| return d[ix]; |
| } |
| |
| static const char a = Foo ('a', 1); |
| static const char b = Foo ('a', 0); |
| |
| static_assert (a == '1', ""); |
| static_assert (b == 'a', ""); |
| |
| struct A { |
| union { |
| long s; |
| char d[4]; |
| }; |
| constexpr A (char x) |
| : d("012") |
| { d[0] = x; } |
| }; |
| |
| static constexpr A c{'a'}; |
| |
| static_assert (c.d[0] == 'a', ""); |
| static_assert (c.d[1] == '1', ""); |
