1 // RUN: %clang_cc1 -std=c++17 -fsyntax-only -verify=expected,pre26 %s 2 // RUN: %clang_cc1 -std=c++17 -fsyntax-only -verify=expected,pre26-pedantic -pedantic %s 3 // RUN: %clang_cc1 -std=c++2c -fsyntax-only -verify=expected,compat -Wpre-c++26-compat %s 4 // RUN: %clang_cc1 -std=c++2c -fsyntax-only -verify %s 5 6 struct S { 7 void a() = delete; 8 void b() = delete(; // expected-error {{expected string literal}} expected-error {{expected ')'}} expected-note {{to match this '('}} 9 void c() = delete(); // expected-error {{expected string literal}} 10 void d() = delete(42); // expected-error {{expected string literal}} 11 void e() = delete("foo"[0]); // expected-error {{expected ')'}} expected-note {{to match this '('}} // pre26-pedantic-warning {{'= delete' with a message is a C++2c extension}} compat-warning {{'= delete' with a message is incompatible with C++ standards before C++2c}} 12 void f() = delete("foo"); // pre26-pedantic-warning {{'= delete' with a message is a C++2c extension}} compat-warning {{'= delete' with a message is incompatible with C++ standards before C++2c}} 13 14 S() = delete("foo"); // pre26-pedantic-warning {{'= delete' with a message is a C++2c extension}} compat-warning {{'= delete' with a message is incompatible with C++ standards before C++2c}} 15 ~S() = delete("foo"); // pre26-pedantic-warning {{'= delete' with a message is a C++2c extension}} compat-warning {{'= delete' with a message is incompatible with C++ standards before C++2c}} 16 S(const S&) = delete("foo"); // pre26-pedantic-warning {{'= delete' with a message is a C++2c extension}} compat-warning {{'= delete' with a message is incompatible with C++ standards before C++2c}} 17 S(S&&) = delete("foo"); // pre26-pedantic-warning {{'= delete' with a message is a C++2c extension}} compat-warning {{'= delete' with a message is incompatible with C++ standards before C++2c}} 18 S& operator=(const S&) = delete("foo"); // pre26-pedantic-warning {{'= delete' with a message is a C++2c extension}} compat-warning {{'= delete' with a message is incompatible with C++ standards before C++2c}} 19 S& operator=(S&&) = delete("foo"); // pre26-pedantic-warning {{'= delete' with a message is a C++2c extension}} compat-warning {{'= delete' with a message is incompatible with C++ standards before C++2c}} 20 }; 21 22 struct T { 23 T() = delete(); // expected-error {{expected string literal}} 24 ~T() = delete(); // expected-error {{expected string literal}} 25 T(const T&) = delete(); // expected-error {{expected string literal}} 26 T(T&&) = delete(); // expected-error {{expected string literal}} 27 T& operator=(const T&) = delete(); // expected-error {{expected string literal}} 28 T& operator=(T&&) = delete(); // expected-error {{expected string literal}} 29 }; 30 31 void a() = delete; 32 void b() = delete(; // expected-error {{expected string literal}} expected-error {{expected ')'}} expected-note {{to match this '('}} 33 void c() = delete(); // expected-error {{expected string literal}} 34 void d() = delete(42); // expected-error {{expected string literal}} 35 void e() = delete("foo"[0]); // expected-error {{expected ')'}} expected-note {{to match this '('}} // pre26-pedantic-warning {{'= delete' with a message is a C++2c extension}} compat-warning {{'= delete' with a message is incompatible with C++ standards before C++2c}} 36 void f() = delete("foo"); // pre26-pedantic-warning {{'= delete' with a message is a C++2c extension}} compat-warning {{'= delete' with a message is incompatible with C++ standards before C++2c}} 37 38 constexpr const char *getMsg() { return "this is a message"; } 39 void func() = delete(getMsg()); // expected-error {{expected string literal}} 40 41 namespace CWG2876 { 42 using T = void (); 43 using U = int; 44 45 T a = delete ("hello"); // expected-error {{only functions can have deleted definitions}} 46 U b = delete ("hello"), c, d = delete ("hello"); // expected-error 2 {{only functions can have deleted definitions}} 47 48 struct C { 49 T e = delete ("hello"); // expected-error {{'= delete' is a function definition and must occur in a standalone declaration}} 50 U f = delete ("hello"); // expected-error {{cannot delete expression of type 'const char[6]'}} 51 }; 52 } 53 54 namespace GH109311 { 55 void f() = delete 56 #if __cpp_deleted_function >= 202403L 57 ("reason") // pre26-pedantic-warning {{'= delete' with a message is a C++2c extension}} \ 58 // compat-warning {{'= delete' with a message is incompatible with C++ standards before C++2}} 59 #endif 60 ; 61 } 62