// PR c++/91264 | |
// { dg-do compile { target c++14 } } | |
struct D { int n; }; | |
struct C { const D d; }; | |
struct A { | |
C c; | |
constexpr A() : c{} { } | |
}; | |
struct B { | |
A a; | |
constexpr B() { | |
int &r = const_cast<int &>(a.c.d.n); | |
r = 3; // { dg-error "modifying a const object" } | |
} | |
}; | |
constexpr B b{}; // { dg-message "in .constexpr. expansion of " } | |
// { dg-message "originally declared" "" { target *-*-* } .-1 } | |
static_assert((b.a.c.d.n, 1), ""); |