1 // RUN: %clang_cc1 -fmodules-ts -verify -std=c++17 %s 2 // RUN: %clang_cc1 -fmodules-ts -verify -std=c++17 %s -DEXPORT 3 // RUN: %clang_cc1 -fmodules-ts -verify -std=c++17 %s -DUSING 4 5 #ifndef NO_GLOBAL 6 extern int var; // expected-note {{previous declaration is here}} 7 int func(); // expected-note {{previous declaration is here}} 8 struct str; // expected-note {{previous declaration is here}} 9 using type = int; 10 11 template<typename> extern int var_tpl; // expected-note {{previous declaration is here}} 12 template<typename> int func_tpl(); // expected-note-re {{{{previous declaration is here|target of using declaration}}}} 13 template<typename> struct str_tpl; // expected-note {{previous declaration is here}} 14 template<typename> using type_tpl = int; // expected-note {{previous declaration is here}} 15 16 typedef int type; 17 namespace ns { using ::func; } 18 namespace ns_alias = ns; 19 #endif 20 21 export module M; 22 23 #ifdef USING 24 using ::var; 25 using ::func; 26 using ::str; 27 using ::type; 28 using ::var_tpl; 29 using ::func_tpl; // expected-note {{using declaration}} 30 using ::str_tpl; 31 using ::type_tpl; 32 #endif 33 34 #ifdef EXPORT 35 export { 36 #endif 37 38 extern int var; // expected-error {{declaration of 'var' in module M follows declaration in the global module}} 39 int func(); // expected-error {{declaration of 'func' in module M follows declaration in the global module}} 40 struct str; // expected-error {{declaration of 'str' in module M follows declaration in the global module}} 41 using type = int; 42 43 template<typename> extern int var_tpl; // expected-error {{declaration of 'var_tpl' in module M follows declaration in the global module}} 44 // FIXME: Is this the right diagnostic in the -DUSING case? 45 template<typename> int func_tpl(); // expected-error-re {{{{declaration of 'func_tpl' in module M follows declaration in the global module|conflicts with target of using declaration}}}} 46 template<typename> struct str_tpl; // expected-error {{declaration of 'str_tpl' in module M follows declaration in the global module}} 47 template<typename> using type_tpl = int; // expected-error {{declaration of 'type_tpl' in module M follows declaration in the global module}} 48 49 typedef int type; 50 namespace ns { using ::func; } 51 namespace ns_alias = ns; 52 53 #ifdef EXPORT 54 } 55 #endif 56