6 namespace NS {}  namespace
8 using NS::x UIE; // expected-note{{using declaration annotated with 'using_if_exists' here}}
13 using NS::NotNS::x UIE; // expected-error{{no member named 'NotNS' in namespace 'test_basic::NS'}}
17 namespace NS {}  namespace
19 using NS::x UIE;
20 using NS::x UIE;
161 namespace NS {}  namespace
163 using NS::x UIE; // expected-note {{using declaration annotated with 'using_if_exists' here}}
195 namespace NS {  namespace
200 using alias UIE = NS::x; // expected-error {{'using_if_exists' attribute only applies to named decl…
203 using template_alias UIE = NS::x; // expected-error {{'using_if_exists' attribute only applies to n…
207 using namespace NS UIE; // expected-error {{'using_if_exists' attribute only applies to named decla…