43 lines · cpp
1// RUN: %clang_cc1 -pedantic -triple x86_64-apple-macos11 -std=c++20 -fsyntax-only -verify %s2 3static_assert(__has_extension(cxx_attributes_on_using_declarations), "");4 5namespace NS { typedef int x; }6 7[[clang::annotate("foo")]] using NS::x; // expected-warning{{ISO C++ does not allow an attribute list to appear here}}8 9 10[[deprecated]] using NS::x; // expected-warning {{'deprecated' currently has no effect on a using declaration}} expected-warning{{ISO C++ does not allow}}11using NS::x [[deprecated]]; // expected-warning {{'deprecated' currently has no effect on a using declaration}} expected-warning{{ISO C++ does not allow}}12using NS::x __attribute__((deprecated)); // expected-warning {{'deprecated' currently has no effect on a using declaration}}13using NS::x __attribute__((availability(macos,introduced=1))); // expected-warning {{'availability' currently has no effect on a using declaration}}14 15[[clang::availability(macos,introduced=1)]] using NS::x; // expected-warning {{'clang::availability' currently has no effect on a using declaration}} expected-warning{{ISO C++ does not allow}}16 17// expected-warning@+1 3 {{ISO C++ does not allow an attribute list to appear here}}18[[clang::annotate("A")]] using NS::x [[clang::annotate("Y")]], NS::x [[clang::annotate("Z")]];19 20template <class T>21struct S : T {22 [[deprecated]] using typename T::x; // expected-warning{{ISO C++ does not allow}} expected-warning {{'deprecated' currently has no effect on a using declaration}}23 [[deprecated]] using T::y; // expected-warning{{ISO C++ does not allow}} expected-warning {{'deprecated' currently has no effect on a using declaration}}24 25 using typename T::z [[deprecated]]; // expected-warning{{ISO C++ does not allow}} expected-warning {{'deprecated' currently has no effect on a using declaration}}26 using T::a [[deprecated]]; // expected-warning{{ISO C++ does not allow}} expected-warning {{'deprecated' currently has no effect on a using declaration}}27};28 29struct Base {};30 31template <class B>32struct DepBase1 : B {33 using B::B [[]];34 35};36template <class B>37struct DepBase2 : B {38 using B::B __attribute__(());39};40 41DepBase1<Base> db1;42DepBase2<Base> db2;43