llvm-project/clang/test/Parser/using-if-exists-attr.cpp

28 lines
1.2 KiB
C++

// 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}}
};