// RUN: %clang_cc1 -std=c++20 -fsyntax-only %s -pedantic -verify #define UIE __attribute__((using_if_exists)) namespace NS { typedef int x; } using NS::x __attribute__((using_if_exists)); using NS::x [[clang::using_if_exists]]; // expected-warning{{ISO C++ does not allow an attribute list to appear here}} [[clang::using_if_exists]] // expected-warning{{ISO C++ does not allow an attribute list to appear here}} using NS::not_there, NS::not_there2; using NS::not_there3, // expected-error {{no member named 'not_there3' in namespace 'NS'}} NS::not_there4 [[clang::using_if_exists]]; // expected-warning{{C++ does not allow an attribute list to appear here}} [[clang::using_if_exists]] using NS::not_there5 [[clang::using_if_exists]]; // expected-warning 2 {{ISO C++ does not allow}} struct Base {}; struct Derived : Base { [[clang::using_if_exists]] using Base::x; // expected-warning {{ISO C++ does not allow an attribute list to appear here}} using Base::y [[clang::using_if_exists]]; // expected-warning {{ISO C++ does not allow an attribute list to appear here}} [[clang::using_if_exists]] using Base::z, Base::q; // expected-warning {{C++ does not allow an attribute list to appear here}} };