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// RUN: %clang_cc1 -pedantic -triple x86_64-apple-macos11 -std=c++20 -fsyntax-only -verify %s
static_assert(__has_extension(cxx_attributes_on_using_declarations), "");
namespace NS { typedef int x; }
[[clang::annotate("foo")]] using NS::x; // expected-warning{{ISO C++ does not allow an attribute list to appear here}}
[[deprecated]] using NS::x; // expected-warning {{'deprecated' currently has no effect on a using declaration}} expected-warning{{ISO C++ does not allow}}
using NS::x [[deprecated]]; // expected-warning {{'deprecated' currently has no effect on a using declaration}} expected-warning{{ISO C++ does not allow}}
using NS::x __attribute__((deprecated)); // expected-warning {{'deprecated' currently has no effect on a using declaration}}
using NS::x __attribute__((availability(macos,introduced=1))); // expected-warning {{'availability' currently has no effect on a using declaration}}
[[clang::availability(macos,introduced=1)]] using NS::x; // expected-warning {{'availability' currently has no effect on a using declaration}} expected-warning{{ISO C++ does not allow}}
// expected-warning@+1 3 {{ISO C++ does not allow an attribute list to appear here}}
[[clang::annotate("A")]] using NS::x [[clang::annotate("Y")]], NS::x [[clang::annotate("Z")]];
template <class T>
struct S : T {
[[deprecated]] using typename T::x; // expected-warning{{ISO C++ does not allow}} expected-warning {{'deprecated' currently has no effect on a using declaration}}
[[deprecated]] using T::y; // expected-warning{{ISO C++ does not allow}} expected-warning {{'deprecated' currently has no effect on a using declaration}}
using typename T::z [[deprecated]]; // expected-warning{{ISO C++ does not allow}} expected-warning {{'deprecated' currently has no effect on a using declaration}}
using T::a [[deprecated]]; // expected-warning{{ISO C++ does not allow}} expected-warning {{'deprecated' currently has no effect on a using declaration}}
};
struct Base {};
template <class B>
struct DepBase1 : B {
using B::B [[]];
};
template <class B>
struct DepBase2 : B {
using B::B __attribute__(());
};
DepBase1<Base> db1;
DepBase2<Base> db2;
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