1 | // RUN: %clang_cc1 -std=c++98 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
2 | // RUN: %clang_cc1 -std=c++11 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
3 | // RUN: %clang_cc1 -std=c++14 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
4 | // RUN: %clang_cc1 -std=c++17 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
5 | |
6 | // PR13819 -- __SIZE_TYPE__ is incompatible. |
7 | typedef __SIZE_TYPE__ size_t; // expected-error 0-1 {{extension}} |
8 | |
9 | #if __cplusplus < 201103L |
10 | #define fold(x) (__builtin_constant_p(x) ? (x) : (x)) |
11 | #else |
12 | #define fold |
13 | #endif |
14 | |
15 | namespace dr200 { // dr200: dup 214 |
16 | template <class T> T f(int); |
17 | template <class T, class U> T f(U) = delete; // expected-error 0-1{{extension}} |
18 | |
19 | void g() { |
20 | f<int>(1); |
21 | } |
22 | } |
23 | |
24 | // dr201 FIXME: write codegen test |
25 | |
26 | namespace dr202 { // dr202: yes |
27 | template<typename T> T f(); |
28 | template<int (*g)()> struct X { |
29 | int arr[fold(g == &f<int>) ? 1 : -1]; |
30 | }; |
31 | template struct X<f>; |
32 | } |
33 | |
34 | // FIXME (export) dr204: no |
35 | |
36 | namespace dr206 { // dr206: yes |
37 | struct S; // expected-note 2{{declaration}} |
38 | template<typename T> struct Q { S s; }; // expected-error {{incomplete}} |
39 | template<typename T> void f() { S s; } // expected-error {{incomplete}} |
40 | } |
41 | |
42 | namespace dr207 { // dr207: yes |
43 | class A { |
44 | protected: |
45 | static void f() {} |
46 | }; |
47 | class B : A { |
48 | public: |
49 | using A::f; |
50 | void g() { |
51 | A::f(); |
52 | f(); |
53 | } |
54 | }; |
55 | } |
56 | |
57 | // dr208 FIXME: write codegen test |
58 | |
59 | namespace dr209 { // dr209: yes |
60 | class A { |
61 | void f(); // expected-note {{here}} |
62 | }; |
63 | class B { |
64 | friend void A::f(); // expected-error {{private}} |
65 | }; |
66 | } |
67 | |
68 | // dr210 FIXME: write codegen test |
69 | |
70 | namespace dr211 { // dr211: yes |
71 | struct A { |
72 | A() try { |
73 | throw 0; |
74 | } catch (...) { |
75 | return; // expected-error {{return in the catch of a function try block of a constructor}} |
76 | } |
77 | }; |
78 | } |
79 | |
80 | namespace dr213 { // dr213: yes |
81 | template <class T> struct A : T { |
82 | void h(T t) { |
83 | char &r1 = f(t); |
84 | int &r2 = g(t); // expected-error {{undeclared}} |
85 | } |
86 | }; |
87 | struct B { |
88 | int &f(B); |
89 | int &g(B); // expected-note {{in dependent base class}} |
90 | }; |
91 | char &f(B); |
92 | |
93 | template void A<B>::h(B); // expected-note {{instantiation}} |
94 | } |
95 | |
96 | namespace dr214 { // dr214: yes |
97 | template<typename T, typename U> T checked_cast(U from) { U::error; } |
98 | template<typename T, typename U> T checked_cast(U *from); |
99 | class C {}; |
100 | void foo(int *arg) { checked_cast<const C *>(arg); } |
101 | |
102 | template<typename T> T f(int); |
103 | template<typename T, typename U> T f(U) { T::error; } |
104 | void g() { |
105 | f<int>(1); |
106 | } |
107 | } |
108 | |
109 | namespace dr215 { // dr215: yes |
110 | template<typename T> class X { |
111 | friend void T::foo(); |
112 | int n; |
113 | }; |
114 | struct Y { |
115 | void foo() { (void)+X<Y>().n; } |
116 | }; |
117 | } |
118 | |
119 | namespace dr216 { // dr216: no |
120 | // FIXME: Should reject this: 'f' has linkage but its type does not, |
121 | // and 'f' is odr-used but not defined in this TU. |
122 | typedef enum { e } *E; |
123 | void f(E); |
124 | void g(E e) { f(e); } |
125 | |
126 | struct S { |
127 | // FIXME: Should reject this: 'f' has linkage but its type does not, |
128 | // and 'f' is odr-used but not defined in this TU. |
129 | typedef enum { e } *E; |
130 | void f(E); |
131 | }; |
132 | void g(S s, S::E e) { s.f(e); } |
133 | } |
134 | |
135 | namespace dr217 { // dr217: yes |
136 | template<typename T> struct S { |
137 | void f(int); |
138 | }; |
139 | template<typename T> void S<T>::f(int = 0) {} // expected-error {{default arguments cannot be added}} |
140 | } |
141 | |
142 | namespace dr218 { // dr218: yes |
143 | namespace A { |
144 | struct S {}; |
145 | void f(S); |
146 | } |
147 | namespace B { |
148 | struct S {}; |
149 | void f(S); |
150 | } |
151 | |
152 | struct C { |
153 | int f; |
154 | void test1(A::S as) { f(as); } // expected-error {{called object type 'int'}} |
155 | void test2(A::S as) { void f(); f(as); } // expected-error {{too many arguments}} expected-note {{}} |
156 | void test3(A::S as) { using A::f; f(as); } // ok |
157 | void test4(A::S as) { using B::f; f(as); } // ok |
158 | void test5(A::S as) { int f; f(as); } // expected-error {{called object type 'int'}} |
159 | void test6(A::S as) { struct f {}; (void) f(as); } // expected-error {{no matching conversion}} expected-note +{{}} |
160 | }; |
161 | |
162 | namespace D { |
163 | struct S {}; |
164 | struct X { void operator()(S); } f; |
165 | } |
166 | void testD(D::S ds) { f(ds); } // expected-error {{undeclared identifier}} |
167 | |
168 | namespace E { |
169 | struct S {}; |
170 | struct f { f(S); }; |
171 | } |
172 | void testE(E::S es) { f(es); } // expected-error {{undeclared identifier}} |
173 | |
174 | namespace F { |
175 | struct S { |
176 | template<typename T> friend void f(S, T) {} |
177 | }; |
178 | } |
179 | void testF(F::S fs) { f(fs, 0); } |
180 | |
181 | namespace G { |
182 | namespace X { |
183 | int f; |
184 | struct A {}; |
185 | } |
186 | namespace Y { |
187 | template<typename T> void f(T); |
188 | struct B {}; |
189 | } |
190 | template<typename A, typename B> struct C {}; |
191 | } |
192 | void testG(G::C<G::X::A, G::Y::B> gc) { f(gc); } |
193 | } |
194 | |
195 | // dr219: na |
196 | // dr220: na |
197 | |
198 | namespace dr221 { // dr221: yes |
199 | struct A { // expected-note 2-4{{candidate}} |
200 | A &operator=(int&); // expected-note 2{{candidate}} |
201 | A &operator+=(int&); |
202 | static A &operator=(A&, double&); // expected-error {{cannot be a static member}} |
203 | static A &operator+=(A&, double&); // expected-error {{cannot be a static member}} |
204 | friend A &operator=(A&, char&); // expected-error {{must be a non-static member function}} |
205 | friend A &operator+=(A&, char&); |
206 | }; |
207 | A &operator=(A&, float&); // expected-error {{must be a non-static member function}} |
208 | A &operator+=(A&, float&); |
209 | |
210 | void test(A a, int n, char c, float f) { |
211 | a = n; |
212 | a += n; |
213 | a = c; // expected-error {{no viable}} |
214 | a += c; |
215 | a = f; // expected-error {{no viable}} |
216 | a += f; |
217 | } |
218 | } |
219 | |
220 | namespace dr222 { // dr222: dup 637 |
221 | void f(int a, int b, int c, int *x) { |
222 | #pragma clang diagnostic push |
223 | #pragma clang diagnostic warning "-Wunsequenced" |
224 | void((a += b) += c); |
225 | void((a += b) + (a += c)); // expected-warning {{multiple unsequenced modifications to 'a'}} |
226 | |
227 | x[a++] = a; // expected-warning {{unsequenced modification and access to 'a'}} |
228 | |
229 | a = b = 0; // ok, read and write of 'b' are sequenced |
230 | |
231 | a = (b = a++); // expected-warning {{multiple unsequenced modifications to 'a'}} |
232 | a = (b = ++a); |
233 | #pragma clang diagnostic pop |
234 | } |
235 | } |
236 | |
237 | // dr223: na |
238 | |
239 | namespace dr224 { // dr224: no |
240 | namespace example1 { |
241 | template <class T> class A { |
242 | typedef int type; |
243 | A::type a; |
244 | A<T>::type b; |
245 | A<T*>::type c; // expected-error {{missing 'typename'}} |
246 | ::dr224::example1::A<T>::type d; |
247 | |
248 | class B { |
249 | typedef int type; |
250 | |
251 | A::type a; |
252 | A<T>::type b; |
253 | A<T*>::type c; // expected-error {{missing 'typename'}} |
254 | ::dr224::example1::A<T>::type d; |
255 | |
256 | B::type e; |
257 | A<T>::B::type f; |
258 | A<T*>::B::type g; // expected-error {{missing 'typename'}} |
259 | typename A<T*>::B::type h; |
260 | }; |
261 | }; |
262 | |
263 | template <class T> class A<T*> { |
264 | typedef int type; |
265 | A<T*>::type a; |
266 | A<T>::type b; // expected-error {{missing 'typename'}} |
267 | }; |
268 | |
269 | template <class T1, class T2, int I> struct B { |
270 | typedef int type; |
271 | B<T1, T2, I>::type b1; |
272 | B<T2, T1, I>::type b2; // expected-error {{missing 'typename'}} |
273 | |
274 | typedef T1 my_T1; |
275 | static const int my_I = I; |
276 | static const int my_I2 = I+0; |
277 | static const int my_I3 = my_I; |
278 | B<my_T1, T2, my_I>::type b3; // FIXME: expected-error {{missing 'typename'}} |
279 | B<my_T1, T2, my_I2>::type b4; // expected-error {{missing 'typename'}} |
280 | B<my_T1, T2, my_I3>::type b5; // FIXME: expected-error {{missing 'typename'}} |
281 | }; |
282 | } |
283 | |
284 | namespace example2 { |
285 | template <int, typename T> struct X { typedef T type; }; |
286 | template <class T> class A { |
287 | static const int i = 5; |
288 | X<i, int>::type w; // FIXME: expected-error {{missing 'typename'}} |
289 | X<A::i, char>::type x; // FIXME: expected-error {{missing 'typename'}} |
290 | X<A<T>::i, double>::type y; // FIXME: expected-error {{missing 'typename'}} |
291 | X<A<T*>::i, long>::type z; // expected-error {{missing 'typename'}} |
292 | int f(); |
293 | }; |
294 | template <class T> int A<T>::f() { |
295 | return i; |
296 | } |
297 | } |
298 | } |
299 | |
300 | // dr225: yes |
301 | template<typename T> void dr225_f(T t) { dr225_g(t); } // expected-error {{call to function 'dr225_g' that is neither visible in the template definition nor found by argument-dependent lookup}} |
302 | void dr225_g(int); // expected-note {{should be declared prior to the call site}} |
303 | template void dr225_f(int); // expected-note {{in instantiation of}} |
304 | |
305 | namespace dr226 { // dr226: no |
306 | template<typename T = void> void f() {} |
307 | #if __cplusplus < 201103L |
308 | // expected-error@-2 {{extension}} |
309 | // FIXME: This appears to be wrong: default arguments for function templates |
310 | // are listed as a defect (in c++98) not an extension. EDG accepts them in |
311 | // strict c++98 mode. |
312 | #endif |
313 | template<typename T> struct S { |
314 | template<typename U = void> void g(); |
315 | #if __cplusplus < 201103L |
316 | // expected-error@-2 {{extension}} |
317 | #endif |
318 | template<typename U> struct X; |
319 | template<typename U> void h(); |
320 | }; |
321 | template<typename T> template<typename U> void S<T>::g() {} |
322 | template<typename T> template<typename U = void> struct S<T>::X {}; // expected-error {{cannot add a default template arg}} |
323 | template<typename T> template<typename U = void> void S<T>::h() {} // expected-error {{cannot add a default template arg}} |
324 | |
325 | template<typename> void friend_h(); |
326 | struct A { |
327 | // FIXME: This is ill-formed. |
328 | template<typename=void> struct friend_B; |
329 | // FIXME: f, h, and i are ill-formed. |
330 | // f is ill-formed because it is not a definition. |
331 | // h and i are ill-formed because they are not the only declarations of the |
332 | // function in the translation unit. |
333 | template<typename=void> void friend_f(); |
334 | template<typename=void> void friend_g() {} |
335 | template<typename=void> void friend_h() {} |
336 | template<typename=void> void friend_i() {} |
337 | #if __cplusplus < 201103L |
338 | // expected-error@-5 {{extension}} expected-error@-4 {{extension}} |
339 | // expected-error@-4 {{extension}} expected-error@-3 {{extension}} |
340 | #endif |
341 | }; |
342 | template<typename> void friend_i(); |
343 | |
344 | template<typename=void, typename X> void foo(X) {} |
345 | template<typename=void, typename X> struct Foo {}; // expected-error {{missing a default argument}} expected-note {{here}} |
346 | #if __cplusplus < 201103L |
347 | // expected-error@-3 {{extension}} |
348 | #endif |
349 | |
350 | template<typename=void, typename X, typename, typename Y> int foo(X, Y); |
351 | template<typename, typename X, typename=void, typename Y> int foo(X, Y); |
352 | int x = foo(0, 0); |
353 | #if __cplusplus < 201103L |
354 | // expected-error@-4 {{extension}} |
355 | // expected-error@-4 {{extension}} |
356 | #endif |
357 | } |
358 | |
359 | void dr227(bool b) { // dr227: yes |
360 | if (b) |
361 | int n; |
362 | else |
363 | int n; |
364 | } |
365 | |
366 | namespace dr228 { // dr228: yes |
367 | template <class T> struct X { |
368 | void f(); |
369 | }; |
370 | template <class T> struct Y { |
371 | void g(X<T> x) { x.template X<T>::f(); } |
372 | }; |
373 | } |
374 | |
375 | namespace dr229 { // dr229: yes |
376 | template<typename T> void f(); |
377 | template<typename T> void f<T*>() {} // expected-error {{function template partial specialization}} |
378 | template<> void f<int>() {} |
379 | } |
380 | |
381 | namespace dr230 { // dr230: yes |
382 | struct S { |
383 | S() { f(); } // expected-warning {{call to pure virtual member function}} |
384 | virtual void f() = 0; // expected-note {{declared here}} |
385 | }; |
386 | } |
387 | |
388 | namespace dr231 { // dr231: yes |
389 | namespace outer { |
390 | namespace inner { |
391 | int i; // expected-note {{here}} |
392 | } |
393 | void f() { using namespace inner; } |
394 | int j = i; // expected-error {{undeclared identifier 'i'; did you mean 'inner::i'?}} |
395 | } |
396 | } |
397 | |
398 | // dr234: na |
399 | // dr235: na |
400 | |
401 | namespace dr236 { // dr236: yes |
402 | void *p = int(); |
403 | #if __cplusplus < 201103L |
404 | // expected-warning@-2 {{null pointer}} |
405 | #else |
406 | // expected-error@-4 {{cannot initialize}} |
407 | #endif |
408 | } |
409 | |
410 | namespace dr237 { // dr237: dup 470 |
411 | template<typename T> struct A { void f() { T::error; } }; |
412 | template<typename T> struct B : A<T> {}; |
413 | template struct B<int>; // ok |
414 | } |
415 | |
416 | namespace dr239 { // dr239: yes |
417 | namespace NS { |
418 | class T {}; |
419 | void f(T); |
420 | float &g(T, int); |
421 | } |
422 | NS::T parm; |
423 | int &g(NS::T, float); |
424 | int main() { |
425 | f(parm); |
426 | float &r = g(parm, 1); |
427 | extern int &g(NS::T, float); |
428 | int &s = g(parm, 1); |
429 | } |
430 | } |
431 | |
432 | // dr240: dup 616 |
433 | |
434 | namespace dr241 { // dr241: yes |
435 | namespace A { |
436 | struct B {}; |
437 | template <int X> void f(); // expected-note 2{{candidate}} |
438 | template <int X> void g(B); |
439 | } |
440 | namespace C { |
441 | template <class T> void f(T t); // expected-note 2{{candidate}} |
442 | template <class T> void g(T t); // expected-note {{candidate}} |
443 | } |
444 | void h(A::B b) { |
445 | f<3>(b); // expected-error {{undeclared identifier}} |
446 | g<3>(b); // expected-error {{undeclared identifier}} |
447 | A::f<3>(b); // expected-error {{no matching}} |
448 | A::g<3>(b); |
449 | C::f<3>(b); // expected-error {{no matching}} |
450 | C::g<3>(b); // expected-error {{no matching}} |
451 | using C::f; |
452 | using C::g; |
453 | f<3>(b); // expected-error {{no matching}} |
454 | g<3>(b); |
455 | } |
456 | } |
457 | |
458 | namespace dr243 { // dr243: yes |
459 | struct B; |
460 | struct A { |
461 | A(B); // expected-note {{candidate}} |
462 | }; |
463 | struct B { |
464 | operator A() = delete; // expected-error 0-1{{extension}} expected-note {{candidate}} |
465 | } b; |
466 | A a1(b); |
467 | A a2 = b; // expected-error {{ambiguous}} |
468 | } |
469 | |
470 | namespace dr244 { // dr244: partial |
471 | struct B {}; struct D : B {}; // expected-note {{here}} |
472 | |
473 | D D_object; |
474 | typedef B B_alias; |
475 | B* B_ptr = &D_object; |
476 | |
477 | void f() { |
478 | D_object.~B(); // expected-error {{expression does not match the type}} |
479 | D_object.B::~B(); |
480 | B_ptr->~B(); |
481 | B_ptr->~B_alias(); |
482 | B_ptr->B_alias::~B(); |
483 | // This is valid under DR244. |
484 | B_ptr->B_alias::~B_alias(); |
485 | B_ptr->dr244::~B(); // expected-error {{refers to a member in namespace}} |
486 | B_ptr->dr244::~B_alias(); // expected-error {{refers to a member in namespace}} |
487 | } |
488 | |
489 | namespace N { |
490 | template<typename T> struct E {}; |
491 | typedef E<int> F; |
492 | } |
493 | void g(N::F f) { |
494 | typedef N::F G; |
495 | f.~G(); |
496 | f.G::~E(); |
497 | f.G::~F(); // expected-error {{expected the class name after '~' to name a destructor}} |
498 | f.G::~G(); |
499 | // This is technically ill-formed; E is looked up in 'N::' and names the |
500 | // class template, not the injected-class-name of the class. But that's |
501 | // probably a bug in the standard. |
502 | f.N::F::~E(); |
503 | // This is valid; we look up the second F in the same scope in which we |
504 | // found the first one, that is, 'N::'. |
505 | f.N::F::~F(); // FIXME: expected-error {{expected the class name after '~' to name a destructor}} |
506 | // This is technically ill-formed; G is looked up in 'N::' and is not found; |
507 | // as above, this is probably a bug in the standard. |
508 | f.N::F::~G(); |
509 | } |
510 | } |
511 | |
512 | namespace dr245 { // dr245: yes |
513 | struct S { |
514 | enum E {}; // expected-note {{here}} |
515 | class E *p; // expected-error {{does not match previous declaration}} |
516 | }; |
517 | } |
518 | |
519 | namespace dr246 { // dr246: yes |
520 | struct S { |
521 | S() try { // expected-note {{try block}} |
522 | throw 0; |
523 | X: ; |
524 | } catch (int) { |
525 | goto X; // expected-error {{cannot jump}} |
526 | } |
527 | }; |
528 | } |
529 | |
530 | namespace dr247 { // dr247: yes |
531 | struct A {}; |
532 | struct B : A { |
533 | void f(); |
534 | void f(int); |
535 | }; |
536 | void (A::*f)() = (void (A::*)())&B::f; |
537 | |
538 | struct C { |
539 | void f(); |
540 | void f(int); |
541 | }; |
542 | struct D : C {}; |
543 | void (C::*g)() = &D::f; |
544 | void (D::*h)() = &D::f; |
545 | |
546 | struct E { |
547 | void f(); |
548 | }; |
549 | struct F : E { |
550 | using E::f; |
551 | void f(int); |
552 | }; |
553 | void (F::*i)() = &F::f; |
554 | } |
555 | |
556 | namespace dr248 { // dr248: yes c++11 |
557 | // FIXME: Should this also apply to c++98 mode? This was a DR against C++98. |
558 | int \u040d\u040e = 0; |
559 | #if __cplusplus < 201103L |
560 | // FIXME: expected-error@-2 {{expected ';'}} |
561 | #endif |
562 | } |
563 | |
564 | namespace dr249 { // dr249: yes |
565 | template<typename T> struct X { void f(); }; |
566 | template<typename T> void X<T>::f() {} |
567 | } |
568 | |
569 | namespace dr250 { // dr250: yes |
570 | typedef void (*FPtr)(double x[]); |
571 | |
572 | template<int I> void f(double x[]); |
573 | FPtr fp = &f<3>; |
574 | |
575 | template<int I = 3> void g(double x[]); // expected-error 0-1{{extension}} |
576 | FPtr gp = &g<>; |
577 | } |
578 | |
579 | namespace dr252 { // dr252: yes |
580 | struct A { |
581 | void operator delete(void*); // expected-note {{found}} |
582 | }; |
583 | struct B { |
584 | void operator delete(void*); // expected-note {{found}} |
585 | }; |
586 | struct C : A, B { |
587 | virtual ~C(); |
588 | }; |
589 | C::~C() {} // expected-error {{'operator delete' found in multiple base classes}} |
590 | |
591 | struct D { |
592 | void operator delete(void*, int); // expected-note {{here}} |
593 | virtual ~D(); |
594 | }; |
595 | D::~D() {} // expected-error {{no suitable member 'operator delete'}} |
596 | |
597 | struct E { |
598 | void operator delete(void*, int); |
599 | void operator delete(void*) = delete; // expected-error 0-1{{extension}} expected-note 1-2 {{here}} |
600 | virtual ~E(); // expected-error 0-1 {{attempt to use a deleted function}} |
601 | }; |
602 | E::~E() {} // expected-error {{attempt to use a deleted function}} |
603 | |
604 | struct F { |
605 | // If both functions are available, the first one is a placement delete. |
606 | void operator delete(void*, size_t); |
607 | void operator delete(void*) = delete; // expected-error 0-1{{extension}} expected-note {{here}} |
608 | virtual ~F(); |
609 | }; |
610 | F::~F() {} // expected-error {{attempt to use a deleted function}} |
611 | |
612 | struct G { |
613 | void operator delete(void*, size_t); |
614 | virtual ~G(); |
615 | }; |
616 | G::~G() {} |
617 | } |
618 | |
619 | namespace dr254 { // dr254: yes |
620 | template<typename T> struct A { |
621 | typedef typename T::type type; // ok even if this is a typedef-name, because |
622 | // it's not an elaborated-type-specifier |
623 | typedef struct T::type foo; // expected-error {{typedef 'type' cannot be referenced with a struct specifier}} |
624 | }; |
625 | struct B { struct type {}; }; |
626 | struct C { typedef struct {} type; }; // expected-note {{here}} |
627 | A<B>::type n; |
628 | A<C>::type n; // expected-note {{instantiation of}} |
629 | } |
630 | |
631 | // dr256: dup 624 |
632 | |
633 | namespace dr257 { // dr257: yes |
634 | struct A { A(int); }; // expected-note {{here}} |
635 | struct B : virtual A { |
636 | B() {} |
637 | virtual void f() = 0; |
638 | }; |
639 | struct C : B { |
640 | C() {} |
641 | }; |
642 | struct D : B { |
643 | D() {} // expected-error {{must explicitly initialize the base class 'dr257::A'}} |
644 | void f(); |
645 | }; |
646 | } |
647 | |
648 | namespace dr258 { // dr258: yes |
649 | struct A { |
650 | void f(const int); |
651 | template<typename> void g(int); |
652 | float &h() const; |
653 | }; |
654 | struct B : A { |
655 | using A::f; |
656 | using A::g; |
657 | using A::h; |
658 | int &f(int); |
659 | template<int> int &g(int); // expected-note {{candidate}} |
660 | int &h(); |
661 | } b; |
662 | int &w = b.f(0); |
663 | int &x = b.g<int>(0); // expected-error {{no match}} |
664 | int &y = b.h(); |
665 | float &z = const_cast<const B&>(b).h(); |
666 | |
667 | struct C { |
668 | virtual void f(const int) = 0; |
669 | }; |
670 | struct D : C { |
671 | void f(int); |
672 | } d; |
673 | |
674 | struct E { |
675 | virtual void f() = 0; // expected-note {{unimplemented}} |
676 | }; |
677 | struct F : E { |
678 | void f() const {} |
679 | } f; // expected-error {{abstract}} |
680 | } |
681 | |
682 | namespace dr259 { // dr259: 4 |
683 | template<typename T> struct A {}; |
684 | template struct A<int>; // expected-note {{previous}} |
685 | template struct A<int>; // expected-error {{duplicate explicit instantiation}} |
686 | |
687 | template<> struct A<float>; // expected-note {{previous}} |
688 | template struct A<float>; // expected-warning {{has no effect}} |
689 | |
690 | template struct A<char>; // expected-note {{here}} |
691 | template<> struct A<char>; // expected-error {{explicit specialization of 'dr259::A<char>' after instantiation}} |
692 | |
693 | template<> struct A<double>; |
694 | template<> struct A<double>; |
695 | template<> struct A<double> {}; // expected-note {{here}} |
696 | template<> struct A<double> {}; // expected-error {{redefinition}} |
697 | |
698 | template<typename T> struct B; // expected-note {{here}} |
699 | template struct B<int>; // expected-error {{undefined}} |
700 | |
701 | template<> struct B<float>; // expected-note {{previous}} |
702 | template struct B<float>; // expected-warning {{has no effect}} |
703 | } |
704 | |
705 | // FIXME: When dr260 is resolved, also add tests for DR507. |
706 | |
707 | namespace dr261 { // dr261: no |
708 | #pragma clang diagnostic push |
709 | #pragma clang diagnostic warning "-Wused-but-marked-unused" |
710 | |
711 | // FIXME: This is ill-formed, with a diagnostic required, because operator new |
712 | // and operator delete are inline and odr-used, but not defined in this |
713 | // translation unit. |
714 | // We're also missing the -Wused-but-marked-unused diagnostic here. |
715 | struct A { |
716 | inline void *operator new(size_t) __attribute__((unused)); |
717 | inline void operator delete(void*) __attribute__((unused)); |
718 | A() {} |
719 | }; |
720 | |
721 | // FIXME: This is ill-formed, with a required diagnostic, for the same |
722 | // reason. |
723 | struct B { |
724 | inline void operator delete(void*) __attribute__((unused)); |
725 | ~B() {} |
726 | }; |
727 | struct C { |
728 | inline void operator delete(void*) __attribute__((unused)); |
729 | virtual ~C() {} // expected-warning {{'operator delete' was marked unused but was used}} |
730 | }; |
731 | |
732 | struct D { |
733 | inline void operator delete(void*) __attribute__((unused)); |
734 | }; |
735 | void h() { C::operator delete(0); } // expected-warning {{marked unused but was used}} |
736 | |
737 | #pragma clang diagnostic pop |
738 | } |
739 | |
740 | namespace dr262 { // dr262: yes |
741 | int f(int = 0, ...); |
742 | int k = f(); |
743 | int l = f(0); |
744 | int m = f(0, 0); |
745 | } |
746 | |
747 | namespace dr263 { // dr263: yes |
748 | struct X {}; |
749 | struct Y { |
750 | #if __cplusplus < 201103L |
751 | friend X::X() throw(); |
752 | friend X::~X() throw(); |
753 | #else |
754 | friend constexpr X::X() noexcept; |
755 | friend X::~X(); |
756 | #endif |
757 | Y::Y(); // expected-error {{extra qualification}} |
758 | Y::~Y(); // expected-error {{extra qualification}} |
759 | }; |
760 | } |
761 | |
762 | // dr265: dup 353 |
763 | // dr266: na |
764 | // dr269: na |
765 | // dr270: na |
766 | |
767 | namespace dr272 { // dr272: yes |
768 | struct X { |
769 | void f() { |
770 | this->~X(); |
771 | X::~X(); |
772 | ~X(); // expected-error {{unary expression}} |
773 | } |
774 | }; |
775 | } |
776 | |
777 | #include <stdarg.h> |
778 | #include <stddef.h> |
779 | namespace dr273 { // dr273: yes |
780 | struct A { |
781 | int n; |
782 | }; |
783 | void operator&(A); |
784 | void f(A a, ...) { |
785 | offsetof(A, n); |
786 | va_list val; |
787 | va_start(val, a); |
788 | va_end(val); |
789 | } |
790 | } |
791 | |
792 | // dr274: na |
793 | |
794 | namespace dr275 { // dr275: no |
795 | namespace N { |
796 | template <class T> void f(T) {} // expected-note 1-4{{here}} |
797 | template <class T> void g(T) {} // expected-note {{candidate}} |
798 | template <> void f(int); |
799 | template <> void f(char); |
800 | template <> void f(double); |
801 | template <> void g(char); |
802 | } |
803 | |
804 | using namespace N; |
805 | |
806 | namespace M { |
807 | template <> void N::f(char) {} // expected-error {{'M' does not enclose namespace 'N'}} |
808 | template <class T> void g(T) {} |
809 | template <> void g(char) {} |
810 | template void f(long); |
811 | #if __cplusplus >= 201103L |
812 | // FIXME: this should be rejected in c++98 too |
813 | // expected-error@-3 {{must occur in namespace 'N'}} |
814 | #endif |
815 | template void N::f(unsigned long); |
816 | #if __cplusplus >= 201103L |
817 | // FIXME: this should be rejected in c++98 too |
818 | // expected-error@-3 {{not in a namespace enclosing 'N'}} |
819 | #endif |
820 | template void h(long); // expected-error {{does not refer to a function template}} |
821 | template <> void f(double) {} // expected-error {{no function template matches}} |
822 | } |
823 | |
824 | template <class T> void g(T) {} // expected-note {{candidate}} |
825 | |
826 | template <> void N::f(char) {} |
827 | template <> void f(int) {} // expected-error {{no function template matches}} |
828 | |
829 | template void f(short); |
830 | #if __cplusplus >= 201103L |
831 | // FIXME: this should be rejected in c++98 too |
832 | // expected-error@-3 {{must occur in namespace 'N'}} |
833 | #endif |
834 | template void N::f(unsigned short); |
835 | |
836 | // FIXME: this should probably be valid. the wording from the issue |
837 | // doesn't clarify this, but it follows from the usual rules. |
838 | template void g(int); // expected-error {{ambiguous}} |
839 | |
840 | // FIXME: likewise, this should also be valid. |
841 | template<typename T> void f(T) {} // expected-note {{candidate}} |
842 | template void f(short); // expected-error {{ambiguous}} |
843 | } |
844 | |
845 | // dr276: na |
846 | |
847 | namespace dr277 { // dr277: yes |
848 | typedef int *intp; |
849 | int *p = intp(); |
850 | int a[fold(intp() ? -1 : 1)]; |
851 | } |
852 | |
853 | namespace dr280 { // dr280: yes |
854 | typedef void f0(); |
855 | typedef void f1(int); |
856 | typedef void f2(int, int); |
857 | typedef void f3(int, int, int); |
858 | struct A { |
859 | operator f1*(); // expected-note {{here}} expected-note {{candidate}} |
860 | operator f2*(); |
861 | }; |
862 | struct B { |
863 | operator f0*(); // expected-note {{candidate}} |
864 | private: |
865 | operator f3*(); // expected-note {{here}} expected-note {{candidate}} |
866 | }; |
867 | struct C { |
868 | operator f0*(); // expected-note {{candidate}} |
869 | operator f1*(); // expected-note {{candidate}} |
870 | operator f2*(); // expected-note {{candidate}} |
871 | operator f3*(); // expected-note {{candidate}} |
872 | }; |
873 | struct D : private A, B { // expected-note 2{{here}} |
874 | operator f2*(); // expected-note {{candidate}} |
875 | } d; |
876 | struct E : C, D {} e; |
877 | void g() { |
878 | d(); // ok, public |
879 | d(0); // expected-error {{private member of 'dr280::A'}} expected-error {{private base class 'dr280::A'}} |
880 | d(0, 0); // ok, suppressed by member in D |
881 | d(0, 0, 0); // expected-error {{private member of 'dr280::B'}} |
882 | e(); // expected-error {{ambiguous}} |
883 | e(0); // expected-error {{ambiguous}} |
884 | e(0, 0); // expected-error {{ambiguous}} |
885 | e(0, 0, 0); // expected-error {{ambiguous}} |
886 | } |
887 | } |
888 | |
889 | namespace dr281 { // dr281: no |
890 | void a(); |
891 | inline void b(); |
892 | |
893 | void d(); |
894 | inline void e(); |
895 | |
896 | struct S { |
897 | friend inline void a(); // FIXME: ill-formed |
898 | friend inline void b(); |
899 | friend inline void c(); // FIXME: ill-formed |
900 | friend inline void d() {} |
901 | friend inline void e() {} |
902 | friend inline void f() {} |
903 | }; |
904 | } |
905 | |
906 | namespace dr283 { // dr283: yes |
907 | template<typename T> // expected-note 2{{here}} |
908 | struct S { |
909 | friend class T; // expected-error {{shadows}} |
910 | class T; // expected-error {{shadows}} |
911 | }; |
912 | } |
913 | |
914 | namespace dr284 { // dr284: no |
915 | namespace A { |
916 | struct X; |
917 | enum Y {}; |
918 | class Z {}; |
919 | } |
920 | namespace B { |
921 | struct W; |
922 | using A::X; |
923 | using A::Y; |
924 | using A::Z; |
925 | } |
926 | struct B::V {}; // expected-error {{no struct named 'V'}} |
927 | struct B::W {}; |
928 | struct B::X {}; // FIXME: ill-formed |
929 | enum B::Y e; // ok per dr417 |
930 | class B::Z z; // ok per dr417 |
931 | |
932 | struct C { |
933 | struct X; |
934 | enum Y {}; |
935 | class Z {}; |
936 | }; |
937 | struct D : C { |
938 | struct W; |
939 | using C::X; |
940 | using C::Y; |
941 | using C::Z; |
942 | }; |
943 | struct D::V {}; // expected-error {{no struct named 'V'}} |
944 | struct D::W {}; |
945 | struct D::X {}; // FIXME: ill-formed |
946 | enum D::Y e2; // ok per dr417 |
947 | class D::Z z2; // ok per dr417 |
948 | } |
949 | |
950 | namespace dr285 { // dr285: yes |
951 | template<typename T> void f(T, int); // expected-note {{match}} |
952 | template<typename T> void f(int, T); // expected-note {{match}} |
953 | template<> void f<int>(int, int) {} // expected-error {{ambiguous}} |
954 | } |
955 | |
956 | namespace dr286 { // dr286: yes |
957 | template<class T> struct A { |
958 | class C { |
959 | template<class T2> struct B {}; // expected-note {{here}} |
960 | }; |
961 | }; |
962 | |
963 | template<class T> |
964 | template<class T2> |
965 | struct A<T>::C::B<T2*> { }; |
966 | |
967 | A<short>::C::B<int*> absip; // expected-error {{private}} |
968 | } |
969 | |
970 | // dr288: na |
971 | |
972 | namespace dr289 { // dr289: yes |
973 | struct A; // expected-note {{forward}} |
974 | struct B : A {}; // expected-error {{incomplete}} |
975 | |
976 | template<typename T> struct C { typename T::error error; }; // expected-error {{cannot be used prior to '::'}} |
977 | struct D : C<int> {}; // expected-note {{instantiation}} |
978 | } |
979 | |
980 | // dr290: na |
981 | // dr291: dup 391 |
982 | // dr292 FIXME: write a codegen test |
983 | |
984 | namespace dr294 { // dr294: no |
985 | void f() throw(int); |
986 | #if __cplusplus > 201402L |
987 | // expected-error@-2 {{ISO C++17 does not allow}} expected-note@-2 {{use 'noexcept}} |
988 | #endif |
989 | int main() { |
990 | (void)static_cast<void (*)() throw()>(f); // FIXME: ill-formed in C++14 and before |
991 | #if __cplusplus > 201402L |
992 | // FIXME: expected-error@-2 {{not allowed}} |
993 | // |
994 | // Irony: the above is valid in C++17 and beyond, but that's exactly when |
995 | // we reject it. In C++14 and before, this is ill-formed because an |
996 | // exception-specification is not permitted in a type-id. In C++17, this is |
997 | // valid because it's the inverse of a standard conversion sequence |
998 | // containing a function pointer conversion. (Well, it's actually not valid |
999 | // yet, as a static_cast is not permitted to reverse a function pointer |
1000 | // conversion, but that is being changed by core issue). |
1001 | #endif |
1002 | (void)static_cast<void (*)() throw(int)>(f); // FIXME: ill-formed in C++14 and before |
1003 | #if __cplusplus > 201402L |
1004 | // expected-error@-2 {{ISO C++17 does not allow}} expected-note@-2 {{use 'noexcept}} |
1005 | #endif |
1006 | |
1007 | void (*p)() throw() = f; // expected-error-re {{{{not superset|different exception specification}}}} |
1008 | void (*q)() throw(int) = f; |
1009 | #if __cplusplus > 201402L |
1010 | // expected-error@-2 {{ISO C++17 does not allow}} expected-note@-2 {{use 'noexcept}} |
1011 | #endif |
1012 | } |
1013 | } |
1014 | |
1015 | namespace dr295 { // dr295: 3.7 |
1016 | typedef int f(); |
1017 | const f g; // expected-warning {{'const' qualifier on function type 'dr295::f' (aka 'int ()') has no effect}} |
1018 | f &r = g; |
1019 | template<typename T> struct X { |
1020 | const T &f; |
1021 | }; |
1022 | X<f> x = {g}; |
1023 | |
1024 | typedef int U(); |
1025 | typedef const U U; // expected-warning {{'const' qualifier on function type 'dr295::U' (aka 'int ()') has no effect}} |
1026 | |
1027 | typedef int (*V)(); |
1028 | typedef volatile U *V; // expected-warning {{'volatile' qualifier on function type 'dr295::U' (aka 'int ()') has no effect}} |
1029 | } |
1030 | |
1031 | namespace dr296 { // dr296: yes |
1032 | struct A { |
1033 | static operator int() { return 0; } // expected-error {{static}} |
1034 | }; |
1035 | } |
1036 | |
1037 | namespace dr298 { // dr298: yes |
1038 | struct A { |
1039 | typedef int type; |
1040 | A(); |
1041 | ~A(); |
1042 | }; |
1043 | typedef A B; // expected-note {{here}} |
1044 | typedef const A C; // expected-note {{here}} |
1045 | |
1046 | A::type i1; |
1047 | B::type i2; |
1048 | C::type i3; |
1049 | |
1050 | struct A a; |
1051 | struct B b; // expected-error {{typedef 'B' cannot be referenced with a struct specifier}} |
1052 | struct C c; // expected-error {{typedef 'C' cannot be referenced with a struct specifier}} |
1053 | |
1054 | B::B() {} // expected-error {{requires a type specifier}} |
1055 | B::A() {} // ok |
1056 | C::~C() {} // expected-error {{destructor cannot be declared using a typedef 'dr298::C' (aka 'const dr298::A') of the class name}} |
1057 | |
1058 | typedef struct D E; // expected-note {{here}} |
1059 | struct E {}; // expected-error {{conflicts with typedef}} |
1060 | |
1061 | struct F { |
1062 | ~F(); |
1063 | }; |
1064 | typedef const F G; |
1065 | G::~F() {} // ok |
1066 | } |
1067 | |
1068 | namespace dr299 { // dr299: yes c++11 |
1069 | struct S { |
1070 | operator int(); |
1071 | }; |
1072 | struct T { |
1073 | operator int(); // expected-note {{}} |
1074 | operator unsigned short(); // expected-note {{}} |
1075 | }; |
1076 | // FIXME: should this apply to c++98 mode? |
1077 | int *p = new int[S()]; // expected-error 0-1{{extension}} |
1078 | int *q = new int[T()]; // expected-error {{ambiguous}} |
1079 | } |
1080 | |