| // PR c++/103879 | |
| // { dg-do compile { target c++14 } } | |
| struct A { int n = 42; }; | |
| struct Y { int m = 0; }; | |
| struct X : Y, A { }; | |
| struct B : X { }; | |
| struct C { B b; }; | |
| constexpr int f() { | |
| C c; | |
| A& a = static_cast<A&>(c.b); | |
| B& b = static_cast<B&>(a); | |
| return b.n; | |
| } | |
| static_assert(f() == 42, ""); |