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// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
// The nested-name-specifier of a qualified declarator-id shall not begin with a decltype-specifier.
class foo {
static int i;
void func();
};
int decltype(foo())::i; // expected-error{{'decltype' cannot be used to name a declaration}}
void decltype(foo())::func() { // expected-error{{'decltype' cannot be used to name a declaration}}
}
template<typename T>
class tfoo {
static int i;
void func();
};
template<typename T>
int decltype(tfoo<T>())::i; // expected-error{{nested name specifier 'decltype(tfoo<T>())::' for declaration does not refer into a class, class template or class template partial specialization}}
template<typename T>
void decltype(tfoo<T>())::func() { // expected-error{{nested name specifier 'decltype(tfoo<T>())::' for declaration does not refer into a class, class template or class template partial specialization}}
}
// An init-declarator named with a qualified-id can refer to an element of the
// inline namespace set of the named namespace.
namespace inline_namespaces {
namespace N {
inline namespace M {
void f(); // expected-note {{possible target}}
void g();
extern int m; // expected-note {{candidate}}
extern int n;
struct S; // expected-note {{candidate}}
struct T;
enum E : int; // expected-note {{candidate}}
enum F : int;
template<typename T> void ft(); // expected-note {{here}}
template<typename T> void gt(); // expected-note {{here}}
template<typename T> extern int mt; // expected-note {{here}} expected-warning {{extension}}
template<typename T> extern int nt; // expected-note {{here}} expected-warning {{extension}}
template<typename T> struct U; // expected-note {{here}}
template<typename T> struct V; // expected-note {{here}}
}
// When named by unqualified-id, we do *not* look in the inline namespace
// set.
void f() {} // expected-note {{possible target}}
int m; // expected-note {{candidate}}
struct S {}; // expected-note {{candidate}}
enum E : int {}; // expected-note {{candidate}}
static_assert(&f != &M::f, ""); // expected-error {{reference to overloaded function could not be resolved}}
static_assert(&m != &M::m, ""); // expected-error {{ambiguous}}
typedef S X; // expected-error {{ambiguous}}
typedef E Y; // expected-error {{ambiguous}}
// When named by (unqualified) template-id, we do look in the inline
// namespace set. See [namespace.def]p8, [temp.explicit]p3,
// [temp.expl.spec]p2.
//
// This is not explicitly specified for partial specializations, but
// that is just a language defect.
template<> void ft<int>() {}
template void ft<char>(); // expected-error {{undefined}}
template<typename T> int mt<T*>;
template<> int mt<int>;
template int mt<int*>;
template int mt<char>; // expected-error {{undefined}}
template<typename T> struct U<T*> {};
template<> struct U<int> {};
template struct U<int*>;
template struct U<char>; // expected-error {{undefined}}
}
// When named by qualified-id, we *do* look in the inline namespace set.
void N::g() {}
int N::n;
struct N::T {};
enum N::F : int {};
static_assert(&N::g == &N::M::g, "");
static_assert(&N::n == &N::M::n, "");
typedef N::T X;
typedef N::M::T X;
typedef N::F Y;
typedef N::M::F Y;
template<> void N::gt<int>() {}
template void N::gt<char>(); // expected-error {{undefined}}
template<typename T> int N::nt<T*>;
template<> int N::nt<int>;
template int N::nt<int*>;
template int N::nt<char>; // expected-error {{undefined}}
template<typename T> struct N::V<T*> {};
template<> struct N::V<int> {};
template struct N::V<int*>;
template struct N::V<char>; // expected-error {{undefined}}
}
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