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 | namespace dr1512 { // dr1512: 4 |
7 | void f(char *p) { |
8 | if (p > 0) {} // expected-error {{ordered comparison between pointer and zero}} |
9 | #if __cplusplus >= 201103L |
10 | if (p > nullptr) {} // expected-error {{invalid operands}} |
11 | #endif |
12 | } |
13 | bool g(int **x, const int **y) { |
14 | return x < y; |
15 | } |
16 | |
17 | template<typename T> T val(); |
18 | |
19 | template<typename A, typename B, typename C> void composite_pointer_type_is_base() { |
20 | typedef __typeof(true ? val<A>() : val<B>()) type; |
21 | typedef C type; |
22 | |
23 | typedef __typeof(val<A>() == val<B>()) cmp; |
24 | typedef __typeof(val<A>() != val<B>()) cmp; |
25 | typedef bool cmp; |
26 | } |
27 | |
28 | template<typename A, typename B, typename C> void composite_pointer_type_is_ord() { |
29 | composite_pointer_type_is_base<A, B, C>(); |
30 | |
31 | typedef __typeof(val<A>() < val<B>()) cmp; |
32 | typedef __typeof(val<A>() <= val<B>()) cmp; |
33 | typedef __typeof(val<A>() > val<B>()) cmp; |
34 | typedef __typeof(val<A>() >= val<B>()) cmp; |
35 | typedef bool cmp; |
36 | } |
37 | |
38 | template <typename A, typename B, typename C> |
39 | void composite_pointer_type_is_unord(int = 0) { |
40 | composite_pointer_type_is_base<A, B, C>(); |
41 | } |
42 | template <typename A, typename B, typename C> |
43 | void composite_pointer_type_is_unord(__typeof(val<A>() < val<B>()) * = 0); |
44 | template <typename A, typename B, typename C> |
45 | void composite_pointer_type_is_unord(__typeof(val<A>() <= val<B>()) * = 0); |
46 | template <typename A, typename B, typename C> |
47 | void composite_pointer_type_is_unord(__typeof(val<A>() > val<B>()) * = 0); |
48 | template <typename A, typename B, typename C> |
49 | void composite_pointer_type_is_unord(__typeof(val<A>() >= val<B>()) * = 0); |
50 | |
51 | // A call to this is ambiguous if a composite pointer type exists. |
52 | template<typename A, typename B> |
53 | void no_composite_pointer_type(__typeof((true ? val<A>() : val<B>()), void()) * = 0); |
54 | template<typename A, typename B> void no_composite_pointer_type(int = 0); |
55 | |
56 | struct A {}; |
57 | struct B : A {}; |
58 | struct C {}; |
59 | |
60 | void test() { |
61 | #if __cplusplus >= 201103L |
62 | using nullptr_t = decltype(nullptr); |
63 | composite_pointer_type_is_unord<nullptr_t, nullptr_t, nullptr_t>(); |
64 | no_composite_pointer_type<nullptr_t, int>(); |
65 | |
66 | composite_pointer_type_is_unord<nullptr_t, const char**, const char**>(); |
67 | composite_pointer_type_is_unord<const char**, nullptr_t, const char**>(); |
68 | #endif |
69 | |
70 | composite_pointer_type_is_ord<const int *, volatile void *, const volatile void*>(); |
71 | composite_pointer_type_is_ord<const void *, volatile int *, const volatile void*>(); |
72 | |
73 | composite_pointer_type_is_ord<const A*, volatile B*, const volatile A*>(); |
74 | composite_pointer_type_is_ord<const B*, volatile A*, const volatile A*>(); |
75 | |
76 | composite_pointer_type_is_unord<const int *A::*, volatile int *B::*, const volatile int *const B::*>(); |
77 | composite_pointer_type_is_unord<const int *B::*, volatile int *A::*, const volatile int *const B::*>(); |
78 | no_composite_pointer_type<int (A::*)(), int (C::*)()>(); |
79 | no_composite_pointer_type<const int (A::*)(), volatile int (C::*)()>(); |
80 | |
81 | #if __cplusplus > 201402 |
82 | composite_pointer_type_is_ord<int (*)() noexcept, int (*)(), int (*)()>(); |
83 | composite_pointer_type_is_ord<int (*)(), int (*)() noexcept, int (*)()>(); |
84 | composite_pointer_type_is_unord<int (A::*)() noexcept, int (A::*)(), int (A::*)()>(); |
85 | composite_pointer_type_is_unord<int (A::*)(), int (A::*)() noexcept, int (A::*)()>(); |
86 | // FIXME: This looks like a standard defect; these should probably all have type 'int (B::*)()'. |
87 | composite_pointer_type_is_unord<int (B::*)(), int (A::*)() noexcept, int (B::*)()>(); |
88 | composite_pointer_type_is_unord<int (A::*)() noexcept, int (B::*)(), int (B::*)()>(); |
89 | composite_pointer_type_is_unord<int (B::*)() noexcept, int (A::*)(), int (B::*)()>(); |
90 | composite_pointer_type_is_unord<int (A::*)(), int (B::*)() noexcept, int (B::*)()>(); |
91 | |
92 | // FIXME: It would be reasonable to permit these, with a common type of 'int (*const *)()'. |
93 | no_composite_pointer_type<int (**)() noexcept, int (**)()>(); |
94 | no_composite_pointer_type<int (**)(), int (**)() noexcept>(); |
95 | |
96 | // FIXME: It would be reasonable to permit these, with a common type of 'int (A::*)()'. |
97 | no_composite_pointer_type<int (A::*)() const, int (A::*)()>(); |
98 | no_composite_pointer_type<int (A::*)(), int (A::*)() const>(); |
99 | |
100 | // FIXME: It would be reasonable to permit these, with a common type of |
101 | // 'int (A::*)() &' and 'int (A::*)() &&', respectively. |
102 | no_composite_pointer_type<int (A::*)() &, int (A::*)()>(); |
103 | no_composite_pointer_type<int (A::*)(), int (A::*)() &>(); |
104 | no_composite_pointer_type<int (A::*)() &&, int (A::*)()>(); |
105 | no_composite_pointer_type<int (A::*)(), int (A::*)() &&>(); |
106 | |
107 | no_composite_pointer_type<int (A::*)() &&, int (A::*)() &>(); |
108 | no_composite_pointer_type<int (A::*)() &, int (A::*)() &&>(); |
109 | |
110 | no_composite_pointer_type<int (C::*)(), int (A::*)() noexcept>(); |
111 | no_composite_pointer_type<int (A::*)() noexcept, int (C::*)()>(); |
112 | #endif |
113 | } |
114 | |
115 | #if __cplusplus >= 201103L |
116 | template<typename T> struct Wrap { operator T(); }; // expected-note 4{{converted to type 'nullptr_t'}} expected-note 4{{converted to type 'int *'}} |
117 | void test_overload() { |
118 | using nullptr_t = decltype(nullptr); |
119 | void(Wrap<nullptr_t>() == Wrap<nullptr_t>()); |
120 | void(Wrap<nullptr_t>() != Wrap<nullptr_t>()); |
121 | void(Wrap<nullptr_t>() < Wrap<nullptr_t>()); // expected-error {{invalid operands}} |
122 | void(Wrap<nullptr_t>() > Wrap<nullptr_t>()); // expected-error {{invalid operands}} |
123 | void(Wrap<nullptr_t>() <= Wrap<nullptr_t>()); // expected-error {{invalid operands}} |
124 | void(Wrap<nullptr_t>() >= Wrap<nullptr_t>()); // expected-error {{invalid operands}} |
125 | |
126 | // Under dr1213, this is ill-formed: we select the builtin operator<(int*, int*) |
127 | // but then only convert as far as 'nullptr_t', which we then can't convert to 'int*'. |
128 | void(Wrap<nullptr_t>() == Wrap<int*>()); |
129 | void(Wrap<nullptr_t>() != Wrap<int*>()); |
130 | void(Wrap<nullptr_t>() < Wrap<int*>()); // expected-error {{invalid operands to binary expression ('Wrap<nullptr_t>' and 'Wrap<int *>')}} |
131 | void(Wrap<nullptr_t>() > Wrap<int*>()); // expected-error {{invalid operands}} |
132 | void(Wrap<nullptr_t>() <= Wrap<int*>()); // expected-error {{invalid operands}} |
133 | void(Wrap<nullptr_t>() >= Wrap<int*>()); // expected-error {{invalid operands}} |
134 | } |
135 | #endif |
136 | } |
137 | |
138 | namespace dr1518 { // dr1518: 4 |
139 | #if __cplusplus >= 201103L |
140 | struct Z0 { // expected-note 0+ {{candidate}} |
141 | explicit Z0() = default; // expected-note 0+ {{here}} |
142 | }; |
143 | struct Z { // expected-note 0+ {{candidate}} |
144 | explicit Z(); // expected-note 0+ {{here}} |
145 | explicit Z(int); |
146 | explicit Z(int, int); // expected-note 0+ {{here}} |
147 | }; |
148 | template <class T> int Eat(T); // expected-note 0+ {{candidate}} |
149 | Z0 a; |
150 | Z0 b{}; |
151 | Z0 c = {}; // expected-error {{explicit in copy-initialization}} |
152 | int i = Eat<Z0>({}); // expected-error {{no matching function for call to 'Eat'}} |
153 | |
154 | Z c2 = {}; // expected-error {{explicit in copy-initialization}} |
155 | int i2 = Eat<Z>({}); // expected-error {{no matching function for call to 'Eat'}} |
156 | Z a1 = 1; // expected-error {{no viable conversion}} |
157 | Z a3 = Z(1); |
158 | Z a2(1); |
159 | Z *p = new Z(1); |
160 | Z a4 = (Z)1; |
161 | Z a5 = static_cast<Z>(1); |
162 | Z a6 = {4, 3}; // expected-error {{explicit in copy-initialization}} |
163 | |
164 | struct UserProvidedBaseCtor { // expected-note 0+ {{candidate}} |
165 | UserProvidedBaseCtor() {} |
166 | }; |
167 | struct DoesntInheritCtor : UserProvidedBaseCtor { // expected-note 0+ {{candidate}} |
168 | int x; |
169 | }; |
170 | DoesntInheritCtor I{{}, 42}; |
171 | #if __cplusplus <= 201402L |
172 | // expected-error@-2 {{no matching constructor}} |
173 | #endif |
174 | |
175 | struct BaseCtor { BaseCtor() = default; }; // expected-note 0+ {{candidate}} |
176 | struct InheritsCtor : BaseCtor { // expected-note 1+ {{candidate}} |
177 | using BaseCtor::BaseCtor; // expected-note 2 {{inherited here}} |
178 | int x; |
179 | }; |
180 | InheritsCtor II = {{}, 42}; // expected-error {{no matching constructor}} |
181 | |
182 | namespace std_example { |
183 | struct A { |
184 | explicit A() = default; // expected-note 2{{declared here}} |
185 | }; |
186 | |
187 | struct B : A { |
188 | explicit B() = default; // expected-note 2{{declared here}} |
189 | }; |
190 | |
191 | struct C { |
192 | explicit C(); // expected-note 2{{declared here}} |
193 | }; |
194 | |
195 | struct D : A { |
196 | C c; |
197 | explicit D() = default; // expected-note 2{{declared here}} |
198 | }; |
199 | |
200 | template <typename T> void f() { |
201 | T t; // ok |
202 | T u{}; // ok |
203 | T v = {}; // expected-error 4{{explicit}} |
204 | } |
205 | template <typename T> void g() { |
206 | void x(T t); // expected-note 4{{parameter}} |
207 | x({}); // expected-error 4{{explicit}} |
208 | } |
209 | |
210 | void test() { |
211 | f<A>(); // expected-note {{instantiation of}} |
212 | f<B>(); // expected-note {{instantiation of}} |
213 | f<C>(); // expected-note {{instantiation of}} |
214 | f<D>(); // expected-note {{instantiation of}} |
215 | g<A>(); // expected-note {{instantiation of}} |
216 | g<B>(); // expected-note {{instantiation of}} |
217 | g<C>(); // expected-note {{instantiation of}} |
218 | g<D>(); // expected-note {{instantiation of}} |
219 | } |
220 | } |
221 | #endif // __cplusplus >= 201103L |
222 | } |
223 | |
224 | namespace dr1550 { // dr1550: yes |
225 | int f(bool b, int n) { |
226 | return (b ? (throw 0) : n) + (b ? n : (throw 0)); |
227 | } |
228 | } |
229 | |
230 | namespace dr1560 { // dr1560: 3.5 |
231 | void f(bool b, int n) { |
232 | (b ? throw 0 : n) = (b ? n : throw 0) = 0; |
233 | } |
234 | class X { X(const X&); }; |
235 | const X &get(); |
236 | const X &x = true ? get() : throw 0; |
237 | } |
238 | |
239 | namespace dr1573 { // dr1573: 3.9 |
240 | #if __cplusplus >= 201103L |
241 | // ellipsis is inherited (p0136r1 supersedes this part). |
242 | struct A { A(); A(int, char, ...); }; |
243 | struct B : A { using A::A; }; |
244 | B b(1, 'x', 4.0, "hello"); // ok |
245 | |
246 | // inherited constructor is effectively constexpr if the user-written constructor would be |
247 | struct C { C(); constexpr C(int) {} }; |
248 | struct D : C { using C::C; }; |
249 | constexpr D d = D(0); // ok |
250 | struct E : C { using C::C; A a; }; // expected-note {{non-literal type}} |
251 | constexpr E e = E(0); // expected-error {{non-literal type}} |
252 | // FIXME: This diagnostic is pretty bad; we should explain that the problem |
253 | // is that F::c would be initialized by a non-constexpr constructor. |
254 | struct F : C { using C::C; C c; }; // expected-note {{here}} |
255 | constexpr F f = F(0); // expected-error {{constant expression}} expected-note {{constructor inherited from base class 'C'}} |
256 | |
257 | // inherited constructor is effectively deleted if the user-written constructor would be |
258 | struct G { G(int); }; |
259 | struct H : G { using G::G; G g; }; // expected-note {{constructor inherited by 'H' is implicitly deleted because field 'g' has no default constructor}} |
260 | H h(0); // expected-error {{constructor inherited by 'H' from base class 'G' is implicitly deleted}} |
261 | #endif |
262 | } |
263 | |
264 | #if __cplusplus >= 201103L |
265 | namespace std { |
266 | typedef decltype(sizeof(int)) size_t; |
267 | |
268 | // libc++'s implementation |
269 | template <class _E> |
270 | class initializer_list |
271 | { |
272 | const _E* __begin_; |
273 | size_t __size_; |
274 | |
275 | initializer_list(const _E* __b, size_t __s) |
276 | : __begin_(__b), __size_(__s) {} |
277 | |
278 | public: |
279 | typedef _E value_type; |
280 | typedef const _E& reference; |
281 | typedef const _E& const_reference; |
282 | typedef size_t size_type; |
283 | |
284 | typedef const _E* iterator; |
285 | typedef const _E* const_iterator; |
286 | |
287 | initializer_list() : __begin_(nullptr), __size_(0) {} |
288 | |
289 | size_t size() const {return __size_;} |
290 | const _E* begin() const {return __begin_;} |
291 | const _E* end() const {return __begin_ + __size_;} |
292 | }; |
293 | |
294 | template < class _T1, class _T2 > struct pair { _T2 second; }; |
295 | |
296 | template<typename T> struct basic_string { |
297 | basic_string(const T* x) {} |
298 | ~basic_string() {}; |
299 | }; |
300 | typedef basic_string<char> string; |
301 | |
302 | } // std |
303 | |
304 | namespace dr1579 { // dr1579: 3.9 |
305 | template<class T> |
306 | struct GenericMoveOnly { |
307 | GenericMoveOnly(); |
308 | template<class U> GenericMoveOnly(const GenericMoveOnly<U> &) = delete; // expected-note 5 {{marked deleted here}} |
309 | GenericMoveOnly(const int &) = delete; // expected-note 2 {{marked deleted here}} |
310 | template<class U> GenericMoveOnly(GenericMoveOnly<U> &&); |
311 | GenericMoveOnly(int &&); |
312 | }; |
313 | |
314 | GenericMoveOnly<float> DR1579_Eligible(GenericMoveOnly<char> CharMO) { |
315 | int i; |
316 | GenericMoveOnly<char> GMO; |
317 | |
318 | if (0) |
319 | return i; |
320 | else if (0) |
321 | return GMO; |
322 | else if (0) |
323 | return ((GMO)); |
324 | else |
325 | return CharMO; |
326 | } |
327 | |
328 | GenericMoveOnly<char> GlobalMO; |
329 | |
330 | GenericMoveOnly<float> DR1579_Ineligible(int &AnInt, |
331 | GenericMoveOnly<char> &CharMO) { |
332 | static GenericMoveOnly<char> StaticMove; |
333 | extern GenericMoveOnly<char> ExternMove; |
334 | |
335 | if (0) |
336 | return AnInt; // expected-error{{invokes a deleted function}} |
337 | else if (0) |
338 | return GlobalMO; // expected-error{{invokes a deleted function}} |
339 | else if (0) |
340 | return StaticMove; // expected-error{{invokes a deleted function}} |
341 | else if (0) |
342 | return ExternMove; // expected-error{{invokes a deleted function}} |
343 | else if (0) |
344 | return AnInt; // expected-error{{invokes a deleted function}} |
345 | else |
346 | return CharMO; // expected-error{{invokes a deleted function}} |
347 | } |
348 | |
349 | auto DR1579_lambda_valid = [](GenericMoveOnly<float> mo) -> |
350 | GenericMoveOnly<char> { |
351 | return mo; |
352 | }; |
353 | |
354 | auto DR1579_lambda_invalid = []() -> GenericMoveOnly<char> { |
355 | static GenericMoveOnly<float> mo; |
356 | return mo; // expected-error{{invokes a deleted function}} |
357 | }; |
358 | } // end namespace dr1579 |
359 | |
360 | namespace dr1584 { |
361 | // Deducing function types from cv-qualified types |
362 | template<typename T> void f(const T *); // expected-note {{candidate template ignored}} |
363 | template<typename T> void g(T *, const T * = 0); |
364 | template<typename T> void h(T *) { T::error; } // expected-error {{no members}} |
365 | template<typename T> void h(const T *); |
366 | void i() { |
367 | f(&i); // expected-error {{no matching function}} |
368 | g(&i); |
369 | h(&i); // expected-note {{here}} |
370 | } |
371 | } |
372 | |
373 | namespace dr1589 { // dr1589: 3.7 c++11 |
374 | // Ambiguous ranking of list-initialization sequences |
375 | |
376 | void f0(long, int=0); // Would makes selection of #0 ambiguous |
377 | void f0(long); // #0 |
378 | void f0(std::initializer_list<int>); // #00 |
379 | void g0() { f0({1L}); } // chooses #00 |
380 | |
381 | void f1(int, int=0); // Would make selection of #1 ambiguous |
382 | void f1(int); // #1 |
383 | void f1(std::initializer_list<long>); // #2 |
384 | void g1() { f1({42}); } // chooses #2 |
385 | |
386 | void f2(std::pair<const char*, const char*>, int = 0); // Would makes selection of #3 ambiguous |
387 | void f2(std::pair<const char*, const char*>); // #3 |
388 | void f2(std::initializer_list<std::string>); // #4 |
389 | void g2() { f2({"foo","bar"}); } // chooses #4 |
390 | |
391 | namespace with_error { |
392 | void f0(long); // #0 expected-note {{candidate function}} |
393 | void f0(std::initializer_list<int>); // #00 expected-note {{candidate function}} |
394 | void f0(std::initializer_list<int>, int = 0); // Makes selection of #00 ambiguous \ |
395 | // expected-note {{candidate function}} |
396 | void g0() { f0({1L}); } // chooses #00 expected-error{{call to 'f0' is ambiguous}} |
397 | |
398 | void f1(int); // #1 expected-note {{candidate function}} |
399 | void f1(std::initializer_list<long>); // #2 expected-note {{candidate function}} |
400 | void f1(std::initializer_list<long>, int = 0); // Makes selection of #00 ambiguous \ |
401 | // expected-note {{candidate function}} |
402 | void g1() { f1({42}); } // chooses #2 expected-error{{call to 'f1' is ambiguous}} |
403 | |
404 | void f2(std::pair<const char*, const char*>); // #3 TODO: expected- note {{candidate function}} |
405 | void f2(std::initializer_list<std::string>); // #4 expected-note {{candidate function}} |
406 | void f2(std::initializer_list<std::string>, int = 0); // Makes selection of #00 ambiguous \ |
407 | // expected-note {{candidate function}} |
408 | void g2() { f2({"foo","bar"}); } // chooses #4 expected-error{{call to 'f2' is ambiguous}} |
409 | } |
410 | |
411 | } // dr1589 |
412 | |
413 | namespace dr1591 { //dr1591. Deducing array bound and element type from initializer list |
414 | template<class T, int N> int h(T const(&)[N]); |
415 | int X = h({1,2,3}); // T deduced to int, N deduced to 3 |
416 | |
417 | template<class T> int j(T const(&)[3]); |
418 | int Y = j({42}); // T deduced to int, array bound not considered |
419 | |
420 | struct Aggr { int i; int j; }; |
421 | template<int N> int k(Aggr const(&)[N]); //expected-note{{not viable}} |
422 | int Y0 = k({1,2,3}); //expected-error{{no matching function}} |
423 | int Z = k({{1},{2},{3}}); // OK, N deduced to 3 |
424 | |
425 | template<int M, int N> int m(int const(&)[M][N]); |
426 | int X0 = m({{1,2},{3,4}}); // M and N both deduced to 2 |
427 | |
428 | template<class T, int N> int n(T const(&)[N], T); |
429 | int X1 = n({{1},{2},{3}},Aggr()); // OK, T is Aggr, N is 3 |
430 | |
431 | |
432 | namespace check_multi_dim_arrays { |
433 | template<class T, int N, int M, int O> int ***f(const T (&a)[N][M][O]); //expected-note{{deduced conflicting values}} |
434 | template<class T, int N, int M> int **f(const T (&a)[N][M]); //expected-note{{couldn't infer}} |
435 | |
436 | template<class T, int N> int *f(const T (&a)[N]); //expected-note{{couldn't infer}} |
437 | int ***p3 = f({ { {1,2}, {3, 4} }, { {5,6}, {7, 8} }, { {9,10}, {11, 12} } }); |
438 | int ***p33 = f({ { {1,2}, {3, 4} }, { {5,6}, {7, 8} }, { {9,10}, {11, 12, 13} } }); //expected-error{{no matching}} |
439 | int **p2 = f({ {1,2,3}, {3, 4, 5} }); |
440 | int **p22 = f({ {1,2}, {3, 4} }); |
441 | int *p1 = f({1, 2, 3}); |
442 | } |
443 | namespace check_multi_dim_arrays_rref { |
444 | template<class T, int N, int M, int O> int ***f(T (&&a)[N][M][O]); //expected-note{{deduced conflicting values}} |
445 | template<class T, int N, int M> int **f(T (&&a)[N][M]); //expected-note{{couldn't infer}} |
446 | |
447 | template<class T, int N> int *f(T (&&a)[N]); //expected-note{{couldn't infer}} |
448 | int ***p3 = f({ { {1,2}, {3, 4} }, { {5,6}, {7, 8} }, { {9,10}, {11, 12} } }); |
449 | int ***p33 = f({ { {1,2}, {3, 4} }, { {5,6}, {7, 8} }, { {9,10}, {11, 12, 13} } }); //expected-error{{no matching}} |
450 | int **p2 = f({ {1,2,3}, {3, 4, 5} }); |
451 | int **p22 = f({ {1,2}, {3, 4} }); |
452 | int *p1 = f({1, 2, 3}); |
453 | } |
454 | |
455 | namespace check_arrays_of_init_list { |
456 | template<class T, int N> float *f(const std::initializer_list<T> (&)[N]); |
457 | template<class T, int N> double *f(const T(&)[N]); |
458 | double *p = f({1, 2, 3}); |
459 | float *fp = f({{1}, {1, 2}, {1, 2, 3}}); |
460 | } |
461 | namespace core_reflector_28543 { |
462 | |
463 | template<class T, int N> int *f(T (&&)[N]); // #1 |
464 | template<class T> char *f(std::initializer_list<T> &&); //#2 |
465 | template<class T, int N, int M> int **f(T (&&)[N][M]); //#3 expected-note{{candidate}} |
466 | template<class T, int N> char **f(std::initializer_list<T> (&&)[N]); //#4 expected-note{{candidate}} |
467 | |
468 | template<class T> short *f(T (&&)[2]); //#5 |
469 | |
470 | template<class T> using Arr = T[]; |
471 | |
472 | char *pc = f({1, 2, 3}); // OK prefer #2 via 13.3.3.2 [over.ics.rank] |
473 | char *pc2 = f({1, 2}); // #2 also |
474 | int *pi = f(Arr<int>{1, 2, 3}); // OK prefer #1 |
475 | |
476 | void *pv1 = f({ {1, 2, 3}, {4, 5, 6} }); // expected-error{{ambiguous}} btw 3 & 4 |
477 | char **pcc = f({ {1}, {2, 3} }); // OK #4 |
478 | |
479 | short *ps = f(Arr<int>{1, 2}); // OK #5 |
480 | } |
481 | } // dr1591 |
482 | |
483 | #endif |
484 | |