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++17 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
5 | // RUN: %clang_cc1 -std=c++2a -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
6 | |
7 | #if __cplusplus < 201103L |
8 | // expected-error@+1 {{variadic macro}} |
9 | #define static_assert(...) __extension__ _Static_assert(__VA_ARGS__) |
10 | #endif |
11 | |
12 | #if __cplusplus >= 201103L |
13 | namespace std { |
14 | typedef decltype(sizeof(int)) size_t; |
15 | |
16 | template<typename E> class initializer_list { |
17 | const E *begin; |
18 | size_t size; |
19 | |
20 | public: |
21 | initializer_list(); |
22 | }; |
23 | } // std |
24 | #endif |
25 | |
26 | namespace dr1611 { // dr1611: dup 1658 |
27 | struct A { A(int); }; |
28 | struct B : virtual A { virtual void f() = 0; }; |
29 | struct C : B { C() : A(0) {} void f(); }; |
30 | C c; |
31 | } |
32 | |
33 | namespace dr1684 { // dr1684: 3.6 |
34 | #if __cplusplus >= 201103L |
35 | struct NonLiteral { // expected-note {{because}} |
36 | NonLiteral(); |
37 | constexpr int f() { return 0; } // expected-warning 0-1{{will not be implicitly 'const'}} |
38 | }; |
39 | constexpr int f(NonLiteral &) { return 0; } |
40 | constexpr int f(NonLiteral) { return 0; } // expected-error {{not a literal type}} |
41 | #endif |
42 | } |
43 | |
44 | namespace dr1631 { // dr1631: 3.7 |
45 | #if __cplusplus >= 201103L |
46 | // Incorrect overload resolution for single-element initializer-list |
47 | |
48 | struct A { int a[1]; }; |
49 | struct B { B(int); }; |
50 | void f(B, int); |
51 | void f(B, int, int = 0); |
52 | void f(int, A); |
53 | |
54 | void test() { |
55 | f({0}, {{1}}); // expected-warning {{braces around scalar init}} |
56 | } |
57 | |
58 | namespace with_error { |
59 | void f(B, int); // TODO: expected- note {{candidate function}} |
60 | void f(int, A); // expected-note {{candidate function}} |
61 | void f(int, A, int = 0); // expected-note {{candidate function}} |
62 | |
63 | void test() { |
64 | f({0}, {{1}}); // expected-error{{call to 'f' is ambiguous}} |
65 | } |
66 | } |
67 | #endif |
68 | } |
69 | |
70 | namespace dr1638 { // dr1638: yes |
71 | #if __cplusplus >= 201103L |
72 | template<typename T> struct A { |
73 | enum class E; // expected-note {{previous}} |
74 | enum class F : T; // expected-note 2{{previous}} |
75 | }; |
76 | |
77 | template<> enum class A<int>::E; |
78 | template<> enum class A<int>::E {}; |
79 | template<> enum class A<int>::F : int; |
80 | template<> enum class A<int>::F : int {}; |
81 | |
82 | template<> enum class A<short>::E : int; |
83 | template<> enum class A<short>::E : int {}; |
84 | |
85 | template<> enum class A<short>::F; // expected-error {{different underlying type}} |
86 | template<> enum class A<char>::E : char; // expected-error {{different underlying type}} |
87 | template<> enum class A<char>::F : int; // expected-error {{different underlying type}} |
88 | |
89 | enum class A<unsigned>::E; // expected-error {{template specialization requires 'template<>'}} expected-error {{nested name specifier}} |
90 | template enum class A<unsigned>::E; // expected-error {{enumerations cannot be explicitly instantiated}} |
91 | enum class A<unsigned>::E *e; // expected-error {{must use 'enum' not 'enum class'}} |
92 | |
93 | struct B { |
94 | friend enum class A<unsigned>::E; // expected-error {{must use 'enum' not 'enum class'}} |
95 | }; |
96 | #endif |
97 | } |
98 | |
99 | namespace dr1645 { // dr1645: 3.9 |
100 | #if __cplusplus >= 201103L |
101 | struct A { |
102 | constexpr A(int, float = 0); // expected-note 2{{candidate}} |
103 | explicit A(int, int = 0); // expected-note 2{{candidate}} |
104 | A(int, int, int = 0) = delete; // expected-note {{candidate}} |
105 | }; |
106 | |
107 | struct B : A { // expected-note 2{{candidate}} |
108 | using A::A; // expected-note 5{{inherited here}} |
109 | }; |
110 | |
111 | constexpr B a(0); // expected-error {{ambiguous}} |
112 | constexpr B b(0, 0); // expected-error {{ambiguous}} |
113 | #endif |
114 | } |
115 | |
116 | namespace dr1653 { // dr1653: 4 c++17 |
117 | void f(bool b) { |
118 | ++b; |
119 | b++; |
120 | #if __cplusplus <= 201402L |
121 | // expected-warning@-3 {{deprecated}} expected-warning@-2 {{deprecated}} |
122 | #else |
123 | // expected-error@-5 {{incrementing expression of type bool}} expected-error@-4 {{incrementing expression of type bool}} |
124 | #endif |
125 | --b; // expected-error {{cannot decrement expression of type bool}} |
126 | b--; // expected-error {{cannot decrement expression of type bool}} |
127 | b += 1; // ok |
128 | b -= 1; // ok |
129 | } |
130 | } |
131 | |
132 | namespace dr1658 { // dr1658: 5 |
133 | namespace DefCtor { |
134 | class A { A(); }; // expected-note 0-2{{here}} |
135 | class B { ~B(); }; // expected-note 0-2{{here}} |
136 | |
137 | // The stars align! An abstract class does not construct its virtual bases. |
138 | struct C : virtual A { C(); virtual void foo() = 0; }; |
139 | C::C() = default; // ok, not deleted, expected-error 0-1{{extension}} |
140 | struct D : virtual B { D(); virtual void foo() = 0; }; |
141 | D::D() = default; // ok, not deleted, expected-error 0-1{{extension}} |
142 | |
143 | // In all other cases, we are not so lucky. |
144 | struct E : A { E(); virtual void foo() = 0; }; |
145 | #if __cplusplus < 201103L |
146 | E::E() = default; // expected-error {{private default constructor}} expected-error {{extension}} expected-note {{here}} |
147 | #else |
148 | E::E() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible default constructor}} |
149 | #endif |
150 | struct F : virtual A { F(); }; |
151 | #if __cplusplus < 201103L |
152 | F::F() = default; // expected-error {{private default constructor}} expected-error {{extension}} expected-note {{here}} |
153 | #else |
154 | F::F() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible default constructor}} |
155 | #endif |
156 | |
157 | struct G : B { G(); virtual void foo() = 0; }; |
158 | #if __cplusplus < 201103L |
159 | G::G() = default; // expected-error@-2 {{private destructor}} expected-error {{extension}} expected-note {{here}} |
160 | #else |
161 | G::G() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible destructor}} |
162 | #endif |
163 | struct H : virtual B { H(); }; |
164 | #if __cplusplus < 201103L |
165 | H::H() = default; // expected-error@-2 {{private destructor}} expected-error {{extension}} expected-note {{here}} |
166 | #else |
167 | H::H() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible destructor}} |
168 | #endif |
169 | } |
170 | |
171 | namespace Dtor { |
172 | class B { ~B(); }; // expected-note 0-2{{here}} |
173 | |
174 | struct D : virtual B { ~D(); virtual void foo() = 0; }; |
175 | D::~D() = default; // ok, not deleted, expected-error 0-1{{extension}} |
176 | |
177 | struct G : B { ~G(); virtual void foo() = 0; }; |
178 | #if __cplusplus < 201103L |
179 | G::~G() = default; // expected-error@-2 {{private destructor}} expected-error {{extension}} expected-note {{here}} |
180 | #else |
181 | G::~G() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible destructor}} |
182 | #endif |
183 | struct H : virtual B { ~H(); }; |
184 | #if __cplusplus < 201103L |
185 | H::~H() = default; // expected-error@-2 {{private destructor}} expected-error {{extension}} expected-note {{here}} |
186 | #else |
187 | H::~H() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible destructor}} |
188 | #endif |
189 | } |
190 | |
191 | namespace MemInit { |
192 | struct A { A(int); }; // expected-note {{here}} |
193 | struct B : virtual A { |
194 | B() {} |
195 | virtual void f() = 0; |
196 | }; |
197 | struct C : virtual A { |
198 | C() {} // expected-error {{must explicitly initialize}} |
199 | }; |
200 | } |
201 | |
202 | namespace CopyCtorParamType { |
203 | struct A { A(A&); }; |
204 | struct B : virtual A { virtual void f() = 0; }; |
205 | struct C : virtual A { virtual void f(); }; |
206 | struct D : A { virtual void f() = 0; }; |
207 | |
208 | struct X { |
209 | friend B::B(const B&) throw(); |
210 | friend C::C(C&); |
211 | friend D::D(D&); |
212 | }; |
213 | } |
214 | |
215 | namespace CopyCtor { |
216 | class A { A(const A&); A(A&&); }; // expected-note 0-4{{here}} expected-error 0-1{{extension}} |
217 | |
218 | struct C : virtual A { C(const C&); C(C&&); virtual void foo() = 0; }; // expected-error 0-1{{extension}} |
219 | C::C(const C&) = default; // expected-error 0-1{{extension}} |
220 | C::C(C&&) = default; // expected-error 0-2{{extension}} |
221 | |
222 | struct E : A { E(const E&); E(E&&); virtual void foo() = 0; }; // expected-error 0-1{{extension}} |
223 | #if __cplusplus < 201103L |
224 | E::E(const E&) = default; // expected-error {{private copy constructor}} expected-error {{extension}} expected-note {{here}} |
225 | E::E(E&&) = default; // expected-error {{private move constructor}} expected-error 2{{extension}} expected-note {{here}} |
226 | #else |
227 | E::E(const E&) = default; // expected-error {{would delete}} expected-note@-5{{inaccessible copy constructor}} |
228 | E::E(E&&) = default; // expected-error {{would delete}} expected-note@-6{{inaccessible move constructor}} |
229 | #endif |
230 | struct F : virtual A { F(const F&); F(F&&); }; // expected-error 0-1{{extension}} |
231 | #if __cplusplus < 201103L |
232 | F::F(const F&) = default; // expected-error {{private copy constructor}} expected-error {{extension}} expected-note {{here}} |
233 | F::F(F&&) = default; // expected-error {{private move constructor}} expected-error 2{{extension}} expected-note {{here}} |
234 | #else |
235 | F::F(const F&) = default; // expected-error {{would delete}} expected-note@-5{{inaccessible copy constructor}} |
236 | F::F(F&&) = default; // expected-error {{would delete}} expected-note@-6{{inaccessible move constructor}} |
237 | #endif |
238 | } |
239 | |
240 | // assignment case is superseded by dr2180 |
241 | } |
242 | |
243 | namespace dr1672 { // dr1672: 7 |
244 | struct Empty {}; |
245 | struct A : Empty {}; |
246 | struct B { Empty e; }; |
247 | struct C : A { B b; int n; }; |
248 | struct D : A { int n; B b; }; |
249 | |
250 | static_assert(!__is_standard_layout(C), ""); |
251 | static_assert(__is_standard_layout(D), ""); |
252 | |
253 | struct E { B b; int n; }; |
254 | struct F { int n; B b; }; |
255 | union G { B b; int n; }; |
256 | union H { int n; B b; }; |
257 | |
258 | struct X {}; |
259 | template<typename T> struct Y : X, A { T t; }; |
260 | |
261 | static_assert(!__is_standard_layout(Y<E>), ""); |
262 | static_assert(__is_standard_layout(Y<F>), ""); |
263 | static_assert(!__is_standard_layout(Y<G>), ""); |
264 | static_assert(!__is_standard_layout(Y<H>), ""); |
265 | static_assert(!__is_standard_layout(Y<X>), ""); |
266 | } |
267 | |
268 | namespace dr1687 { // dr1687: 7 |
269 | template<typename T> struct To { |
270 | operator T(); // expected-note 2{{first operand was implicitly converted to type 'int *'}} |
271 | // expected-note@-1 {{second operand was implicitly converted to type 'double'}} |
272 | #if __cplusplus > 201703L |
273 | // expected-note@-3 2{{operand was implicitly converted to type 'dr1687::E}} |
274 | #endif |
275 | }; |
276 | |
277 | int *a = To<int*>() + 100.0; // expected-error {{invalid operands to binary expression ('To<int *>' and 'double')}} |
278 | int *b = To<int*>() + To<double>(); // expected-error {{invalid operands to binary expression ('To<int *>' and 'To<double>')}} |
279 | |
280 | #if __cplusplus > 201703L |
281 | enum E1 {}; |
282 | enum E2 {}; |
283 | auto c = To<E1>() <=> To<E2>(); // expected-error {{invalid operands to binary expression ('To<dr1687::E1>' and 'To<dr1687::E2>')}} |
284 | #endif |
285 | } |
286 | |
287 | namespace dr1696 { // dr1696: 7 |
288 | namespace std_examples { |
289 | #if __cplusplus >= 201402L |
290 | extern struct A a; |
291 | struct A { |
292 | const A &x = { A{a, a} }; |
293 | const A &y = { A{} }; // expected-error {{default member initializer for 'y' needed within definition of enclosing class 'A' outside of member functions}} expected-note {{here}} |
294 | }; |
295 | A a{a, a}; |
296 | #endif |
297 | } |
298 | |
299 | struct A { A(); ~A(); }; |
300 | #if __cplusplus >= 201103L |
301 | struct B { |
302 | A &&a; // expected-note {{declared here}} |
303 | B() : a{} {} // expected-error {{reference member 'a' binds to a temporary object whose lifetime would be shorter than the lifetime of the constructed object}} |
304 | } b; |
305 | #endif |
306 | |
307 | struct C { |
308 | C(); |
309 | const A &a; // expected-note {{declared here}} |
310 | }; |
311 | C::C() : a(A()) {} // expected-error {{reference member 'a' binds to a temporary object whose lifetime would be shorter than the lifetime of the constructed object}} |
312 | |
313 | #if __cplusplus >= 201103L |
314 | // This is OK in C++14 onwards, per DR1815, though we don't support that yet: |
315 | // D1 d1 = {}; |
316 | // is equivalent to |
317 | // D1 d1 = {A()}; |
318 | // ... which lifetime-extends the A temporary. |
319 | struct D1 { |
320 | #if __cplusplus < 201402L |
321 | // expected-error@-2 {{binds to a temporary}} |
322 | #endif |
323 | const A &a = A(); // expected-note {{default member init}} |
324 | }; |
325 | D1 d1 = {}; |
326 | #if __cplusplus < 201402L |
327 | // expected-note@-2 {{first required here}} |
328 | #else |
329 | // expected-warning-re@-4 {{sorry, lifetime extension {{.*}} not supported}} |
330 | #endif |
331 | |
332 | struct D2 { |
333 | const A &a = A(); // expected-note {{default member init}} |
334 | D2() {} // expected-error {{binds to a temporary}} |
335 | }; |
336 | |
337 | struct D3 { // expected-error {{binds to a temporary}} |
338 | const A &a = A(); // expected-note {{default member init}} |
339 | }; |
340 | D3 d3; // expected-note {{first required here}} |
341 | |
342 | struct haslist1 { |
343 | std::initializer_list<int> il; // expected-note {{'std::initializer_list' member}} |
344 | haslist1(int i) : il{i, 2, 3} {} // expected-error {{backing array for 'std::initializer_list' member 'il' is a temporary object}} |
345 | }; |
346 | |
347 | struct haslist2 { |
348 | std::initializer_list<int> il; // expected-note {{'std::initializer_list' member}} |
349 | haslist2(); |
350 | }; |
351 | haslist2::haslist2() : il{1, 2} {} // expected-error {{backing array for 'std::initializer_list' member 'il' is a temporary object}} |
352 | |
353 | struct haslist3 { |
354 | std::initializer_list<int> il = {1, 2, 3}; |
355 | }; |
356 | |
357 | struct haslist4 { // expected-error {{backing array for 'std::initializer_list' member 'il' is a temporary object}} |
358 | std::initializer_list<int> il = {1, 2, 3}; // expected-note {{default member initializer}} |
359 | }; |
360 | haslist4 hl4; // expected-note {{in implicit default constructor}} |
361 | |
362 | struct haslist5 { |
363 | std::initializer_list<int> il = {1, 2, 3}; // expected-note {{default member initializer}} |
364 | haslist5() {} // expected-error {{backing array for 'std::initializer_list' member 'il' is a temporary object}} |
365 | }; |
366 | #endif |
367 | } |
368 | |