llvm-project/clang/test/CXX/special/class.inhctor/elsewhere.cpp

65 lines
2.0 KiB
C++

// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
// Tests related to constructor inheriting, but not specified in [class.inhctor]
// [namespace.udecl]p8:
// A using-declaration for a class member shall be a member-declaration.
struct B1 {
B1(int);
};
using B1::B1; // expected-error {{using declaration cannot refer to class member}}
// C++11 [namespace.udecl]p10:
// A using-declaration is a declaration and can therefore be used repeatedly
// where (and only where) multiple declarations are allowed.
struct I1 : B1 {
using B1::B1; // expected-note {{previous using declaration}}
using B1::B1; // expected-error {{redeclaration of using decl}}
};
// C++11 [namespace.udecl]p3:
// In a using declaration used as a member-declaration, the nested-name-
// specifier shall name a base class of the class being defined.
// If such a using-declaration names a constructor, the nested-name-specifier
// shall name a direct base class of the class being defined.
struct D1 : I1 {
using B1::B1; // expected-error {{'B1' is not a direct base of 'D1', cannot inherit constructors}}
};
template<typename T> struct A {};
template<typename T> struct B : A<bool>, A<char> {
using A<T>::A; // expected-error {{'A<double>::', which is not a base class of 'B<double>'}}
};
B<bool> bb;
B<char> bc;
B<double> bd; // expected-note {{here}}
template<typename T> struct C : A<T> {
using A<bool>::A; // expected-error {{'A<bool>::', which is not a base class of 'C<char>'}}
};
C<bool> cb;
C<char> cc; // expected-note {{here}}
template<typename T> struct D : A<T> {};
template<typename T> struct E : D<T> {
using A<bool>::A; // expected-error {{'A<bool>' is not a direct base of 'E<bool>', cannot inherit}}
};
E<bool> eb; // expected-note {{here}}
template<typename T> struct F : D<bool> {
using A<T>::A; // expected-error {{'A<bool>' is not a direct base of 'F<bool>'}}
};
F<bool> fb; // expected-note {{here}}
template<typename T>
struct G : T {
using T::T;
G(int &) : G(0) {}
};
G<B1> g(123);