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// LWG2296 - addressof should be constexpr
// { dg-do compile { target c++11 } }
template <typename T>
constexpr inline T *
addressof (T &x) noexcept
{
return __builtin_addressof (x);
}
auto a = __builtin_addressof (1); // { dg-error "lvalue required as unary" }
auto b = addressof (1); // { dg-error "cannot bind non-const lvalue reference of type" }
struct S { int s : 5; int t; void foo (); } s;
auto c = __builtin_addressof (s);
auto d = addressof (s);
auto e = __builtin_addressof (s.s); // { dg-error "attempt to take address of bit-field" }
auto f = addressof (s.s); // { dg-error "cannot bind bitfield" }
auto g = __builtin_addressof (S{}); // { dg-error "taking address of rvalue" }
auto h = addressof (S{}); // { dg-error "cannot bind non-const lvalue reference of type" }
auto i = __builtin_addressof (S::t); // { dg-error "invalid use of non-static data member" }
auto j = __builtin_addressof (S::foo); // { dg-error "invalid use of non-static member function" }
void
foo (bool b)
{
lab:;
char c;
long long int d;
auto k = __builtin_addressof (lab); // { dg-error "was not declared in this scope" }
auto l = __builtin_addressof (b ? c : d); // { dg-error "lvalue required as unary" }
}
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