1 // RUN: %clang_cc1 -std=c++98 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors 2 // RUN: %clang_cc1 -std=c++11 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors 3 // RUN: %clang_cc1 -std=c++14 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors 4 // RUN: %clang_cc1 -std=c++1z -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors 5 6 #if __cplusplus < 201103L 7 // expected-error@+1 {{variadic macro}} 8 #define static_assert(...) __extension__ _Static_assert(__VA_ARGS__) 9 #endif 10 11 namespace dr2103 { // dr2103: yes f()12 void f() { 13 int a; 14 int &r = a; // expected-note {{here}} 15 struct Inner { 16 void f() { 17 int &s = r; // expected-error {{enclosing function}} 18 (void)s; 19 } 20 }; 21 } 22 } 23 24 namespace dr2120 { // dr2120: 7 25 struct A {}; 26 struct B : A {}; 27 struct C { A a; }; 28 struct D { C c[5]; }; 29 struct E : B { D d; }; 30 static_assert(__is_standard_layout(B), ""); 31 static_assert(__is_standard_layout(D), ""); 32 static_assert(!__is_standard_layout(E), ""); 33 } 34 35 namespace dr2140 { // dr2140: 9 36 #if __cplusplus >= 201103L 37 union U { int a; decltype(nullptr) b; }; test(U u)38 constexpr int *test(U u) { 39 return u.b; 40 } 41 static_assert(!test({123}), "u.b should be valid even when b is inactive"); 42 #endif 43 } 44 45 namespace dr2170 { // dr2170: 9 46 #if __cplusplus >= 201103L f()47 void f() { 48 constexpr int arr[3] = {1, 2, 3}; // expected-note {{here}} 49 struct S { 50 int get(int n) { return arr[n]; } 51 const int &get_ref(int n) { return arr[n]; } // expected-error {{enclosing function}} 52 // FIXME: expected-warning@-1 {{reference to stack}} 53 }; 54 } 55 #endif 56 } 57 58 namespace dr2180 { // dr2180: yes 59 class A { 60 A &operator=(const A &); // expected-note 0-2{{here}} 61 A &operator=(A &&); // expected-note 0-2{{here}} expected-error 0-1{{extension}} 62 }; 63 64 struct B : virtual A { 65 B &operator=(const B &); 66 B &operator=(B &&); // expected-error 0-1{{extension}} 67 virtual void foo() = 0; 68 }; 69 #if __cplusplus < 201103L 70 B &B::operator=(const B&) = default; // expected-error {{private member}} expected-error {{extension}} expected-note {{here}} 71 B &B::operator=(B&&) = default; // expected-error {{private member}} expected-error 2{{extension}} expected-note {{here}} 72 #else 73 B &B::operator=(const B&) = default; // expected-error {{would delete}} expected-note@-9{{inaccessible copy assignment}} 74 B &B::operator=(B&&) = default; // expected-error {{would delete}} expected-note@-10{{inaccessible move assignment}} 75 #endif 76 } 77