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1 // RUN: not %clang_cc1 -fsyntax-only %s -std=c++11 2>&1 | FileCheck %s -check-prefix=CHECK-ELIDE-NOTREE
2 // RUN: not %clang_cc1 -fsyntax-only %s -fno-elide-type -std=c++11 2>&1 | FileCheck %s -check-prefix=CHECK-NOELIDE-NOTREE
3 // RUN: not %clang_cc1 -fsyntax-only %s -fdiagnostics-show-template-tree -std=c++11 2>&1 | FileCheck %s -check-prefix=CHECK-ELIDE-TREE
4 // RUN: not %clang_cc1 -fsyntax-only %s -fno-elide-type -fdiagnostics-show-template-tree -std=c++11 2>&1 | FileCheck %s -check-prefix=CHECK-NOELIDE-TREE
5 
6 // PR9548 - "no known conversion from 'vector<string>' to 'vector<string>'"
7 // vector<string> refers to two different types here.  Make sure the message
8 // gives a way to tell them apart.
9 class versa_string;
10 typedef versa_string string;
11 
12 namespace std {template <typename T> class vector;}
13 using std::vector;
14 
15 void f(vector<string> v);
16 
17 namespace std {
18   class basic_string;
19   typedef basic_string string;
20   template <typename T> class vector {};
g()21   void g() {
22     vector<string> v;
23     f(v);
24   }
25 } // end namespace std
26 // CHECK-ELIDE-NOTREE: no matching function for call to 'f'
27 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'vector<std::basic_string>' to 'vector<versa_string>' for 1st argument
28 // CHECK-NOELIDE-NOTREE: no matching function for call to 'f'
29 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'vector<std::basic_string>' to 'vector<versa_string>' for 1st argument
30 // CHECK-ELIDE-TREE: no matching function for call to 'f'
31 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
32 // CHECK-ELIDE-TREE:   vector<
33 // CHECK-ELIDE-TREE:     [std::basic_string != versa_string]>
34 // CHECK-NOELIDE-TREE: no matching function for call to 'f'
35 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
36 // CHECK-NOELIDE-TREE:   vector<
37 // CHECK-NOELIDE-TREE:     [std::basic_string != versa_string]>
38 
39 template <int... A>
40 class I1{};
set1(I1<1,2,3,4,2,3,4,3>)41 void set1(I1<1,2,3,4,2,3,4,3>) {};
test1()42 void test1() {
43   set1(I1<1,2,3,4,2,2,4,3,7>());
44 }
45 // CHECK-ELIDE-NOTREE: no matching function for call to 'set1'
46 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'I1<[5 * ...], 2, [2 * ...], 7>' to 'I1<[5 * ...], 3, [2 * ...], (no argument)>' for 1st argument
47 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set1'
48 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'I1<1, 2, 3, 4, 2, 2, 4, 3, 7>' to 'I1<1, 2, 3, 4, 2, 3, 4, 3, (no argument)>' for 1st argument
49 // CHECK-ELIDE-TREE: no matching function for call to 'set1'
50 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
51 // CHECK-ELIDE-TREE:   I1<
52 // CHECK-ELIDE-TREE:     [5 * ...],
53 // CHECK-ELIDE-TREE:     [2 != 3],
54 // CHECK-ELIDE-TREE:     [2 * ...],
55 // CHECK-ELIDE-TREE:     [7 != (no argument)]>
56 // CHECK-NOELIDE-TREE: no matching function for call to 'set1'
57 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
58 // CHECK-NOELIDE-TREE:   I1<
59 // CHECK-NOELIDE-TREE:     1,
60 // CHECK-NOELIDE-TREE:     2,
61 // CHECK-NOELIDE-TREE:     3,
62 // CHECK-NOELIDE-TREE:     4,
63 // CHECK-NOELIDE-TREE:     2,
64 // CHECK-NOELIDE-TREE:     [2 != 3],
65 // CHECK-NOELIDE-TREE:     4,
66 // CHECK-NOELIDE-TREE:     3,
67 // CHECK-NOELIDE-TREE:     [7 != (no argument)]>
68 
69 template <class A, class B, class C = void>
70 class I2{};
set2(I2<int,int>)71 void set2(I2<int, int>) {};
test2()72 void test2() {
73   set2(I2<double, int, int>());
74 }
75 // CHECK-ELIDE-NOTREE: no matching function for call to 'set2'
76 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'I2<double, [...], int>' to 'I2<int, [...], (default) void>' for 1st argument
77 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set2'
78 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'I2<double, int, int>' to 'I2<int, int, (default) void>' for 1st argument
79 // CHECK-ELIDE-TREE: no matching function for call to 'set2'
80 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
81 // CHECK-ELIDE-TREE:   I2<
82 // CHECK-ELIDE-TREE:     [double != int],
83 // CHECK-ELIDE-TREE:     [...],
84 // CHECK-ELIDE-TREE:     [int != (default) void]>
85 // CHECK-NOELIDE-TREE: no matching function for call to 'set2'
86 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
87 // CHECK-NOELIDE-TREE:   I2<
88 // CHECK-NOELIDE-TREE:     [double != int],
89 // CHECK-NOELIDE-TREE:     int,
90 // CHECK-NOELIDE-TREE:     [int != (default) void]>
91 
92 int V1, V2, V3;
93 template <int* A, int *B>
94 class I3{};
set3(I3<& V1,& V2>)95 void set3(I3<&V1, &V2>) {};
test3()96 void test3() {
97   set3(I3<&V3, &V2>());
98 }
99 // CHECK-ELIDE-NOTREE: no matching function for call to 'set3'
100 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'I3<&V3, [...]>' to 'I3<&V1, [...]>' for 1st argument
101 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set3'
102 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'I3<&V3, &V2>' to 'I3<&V1, &V2>' for 1st argument
103 // CHECK-ELIDE-TREE: no matching function for call to 'set3'
104 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
105 // CHECK-ELIDE-TREE:   I3<
106 // CHECK-ELIDE-TREE:     [&V3 != &V1]
107 // CHECK-ELIDE-TREE:     [...]>
108 // CHECK-NOELIDE-TREE: no matching function for call to 'set3'
109 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
110 // CHECK-NOELIDE-TREE:   I3<
111 // CHECK-NOELIDE-TREE:     [&V3 != &V1]
112 // CHECK-NOELIDE-TREE:     &V2>
113 
114 template <class A, class B>
115 class Alpha{};
116 template <class A, class B>
117 class Beta{};
118 template <class A, class B>
119 class Gamma{};
120 template <class A, class B>
121 class Delta{};
122 
123 void set4(Alpha<int, int>);
test4()124 void test4() {
125   set4(Beta<void, void>());
126 }
127 // CHECK-ELIDE-NOTREE: no matching function for call to 'set4'
128 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'Beta<void, void>' to 'Alpha<int, int>' for 1st argument
129 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set4'
130 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'Beta<void, void>' to 'Alpha<int, int>' for 1st argument
131 // CHECK-ELIDE-TREE: no matching function for call to 'set4'
132 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from 'Beta<void, void>' to 'Alpha<int, int>' for 1st argument
133 // CHECK-NOELIDE-TREE: no matching function for call to 'set4'
134 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from 'Beta<void, void>' to 'Alpha<int, int>' for 1st argument
135 
136 void set5(Alpha<Beta<Gamma<Delta<int, int>, int>, int>, int>);
test5()137 void test5() {
138   set5(Alpha<Beta<Gamma<void, void>, double>, double>());
139 }
140 // CHECK-ELIDE-NOTREE: no matching function for call to 'set5'
141 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'Alpha<Beta<Gamma<void, void>, double>, double>' to 'Alpha<Beta<Gamma<Delta<int, int>, int>, int>, int>' for 1st argument
142 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set5'
143 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'Alpha<Beta<Gamma<void, void>, double>, double>' to 'Alpha<Beta<Gamma<Delta<int, int>, int>, int>, int>' for 1st argument
144 // CHECK-ELIDE-TREE: no matching function for call to 'set5'
145 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
146 // CHECK-ELIDE-TREE:   Alpha<
147 // CHECK-ELIDE-TREE:     Beta<
148 // CHECK-ELIDE-TREE:       Gamma<
149 // CHECK-ELIDE-TREE:         [void != Delta<int, int>],
150 // CHECK-ELIDE-TREE:         [void != int]>
151 // CHECK-ELIDE-TREE:       [double != int]>
152 // CHECK-ELIDE-TREE:     [double != int]>
153 // CHECK-NOELIDE-TREE: no matching function for call to 'set5'
154 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
155 // CHECK-NOELIDE-TREE:   Alpha<
156 // CHECK-NOELIDE-TREE:     Beta<
157 // CHECK-NOELIDE-TREE:       Gamma<
158 // CHECK-NOELIDE-TREE:         [void != Delta<int, int>],
159 // CHECK-NOELIDE-TREE:         [void != int]>
160 // CHECK-NOELIDE-TREE:       [double != int]>
161 // CHECK-NOELIDE-TREE:     [double != int]>
162 
test6()163 void test6() {
164   set5(Alpha<Beta<Delta<int, int>, int>, int>());
165 }
166 // CHECK-ELIDE-NOTREE: no matching function for call to 'set5'
167 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'Alpha<Beta<Delta<int, int>, [...]>, [...]>' to 'Alpha<Beta<Gamma<Delta<int, int>, int>, [...]>, [...]>' for 1st argument
168 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set5'
169 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'Alpha<Beta<Delta<int, int>, int>, int>' to 'Alpha<Beta<Gamma<Delta<int, int>, int>, int>, int>' for 1st argument
170 // CHECK-ELIDE-TREE: no matching function for call to 'set5'
171 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
172 // CHECK-ELIDE-TREE:   Alpha<
173 // CHECK-ELIDE-TREE:     Beta<
174 // CHECK-ELIDE-TREE:       [Delta<int, int> != Gamma<Delta<int, int>, int>],
175 // CHECK-ELIDE-TREE:       [...]>
176 // CHECK-ELIDE-TREE:     [...]>
177 // CHECK-NOELIDE-TREE: no matching function for call to 'set5'
178 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
179 // CHECK-NOELIDE-TREE:   Alpha<
180 // CHECK-NOELIDE-TREE:     Beta<
181 // CHECK-NOELIDE-TREE:       [Delta<int, int> != Gamma<Delta<int, int>, int>],
182 // CHECK-NOELIDE-TREE:       int>
183 // CHECK-NOELIDE-TREE:     int>
184 
185 int a7, b7;
186 int c7[] = {1,2,3};
187 template<int *A>
188 class class7 {};
set7(class7<& a7> A)189 void set7(class7<&a7> A) {}
test7()190 void test7() {
191   set7(class7<&a7>());
192   set7(class7<&b7>());
193   set7(class7<c7>());
194   set7(class7<nullptr>());
195 }
196 // CHECK-ELIDE-NOTREE: no matching function for call to 'set7'
197 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'class7<&b7>' to 'class7<&a7>' for 1st argument
198 // CHECK-ELIDE-NOTREE: no matching function for call to 'set7'
199 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'class7<c7>' to 'class7<&a7>' for 1st argument
200 // CHECK-ELIDE-NOTREE: no matching function for call to 'set7'
201 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'class7<nullptr>' to 'class7<&a7>' for 1st argument
202 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set7'
203 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'class7<&b7>' to 'class7<&a7>' for 1st argument
204 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set7'
205 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'class7<c7>' to 'class7<&a7>' for 1st argument
206 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set7'
207 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'class7<nullptr>' to 'class7<&a7>' for 1st argument
208 // CHECK-ELIDE-TREE: no matching function for call to 'set7'
209 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
210 // CHECK-ELIDE-TREE:   class7<
211 // CHECK-ELIDE-TREE:     [&b7 != &a7]>
212 // CHECK-ELIDE-TREE: no matching function for call to 'set7'
213 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
214 // CHECK-ELIDE-TREE:   class7<
215 // CHECK-ELIDE-TREE:     [c7 != &a7]>
216 // CHECK-ELIDE-TREE: no matching function for call to 'set7'
217 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
218 // CHECK-ELIDE-TREE:   class7<
219 // CHECK-ELIDE-TREE:     [nullptr != &a7]>
220 // CHECK-NOELIDE-TREE: no matching function for call to 'set7'
221 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
222 // CHECK-NOELIDE-TREE:   class7<
223 // CHECK-NOELIDE-TREE:     [&b7 != &a7]>
224 // CHECK-NOELIDE-TREE: no matching function for call to 'set7'
225 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
226 // CHECK-NOELIDE-TREE:   class7<
227 // CHECK-NOELIDE-TREE:     [c7 != &a7]>
228 // CHECK-NOELIDE-TREE: no matching function for call to 'set7'
229 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
230 // CHECK-NOELIDE-TREE:   class7<
231 // CHECK-NOELIDE-TREE:     [nullptr != &a7]>
232 
233 template<typename ...T> struct S8 {};
234 template<typename T> using U8 = S8<int, char, T>;
235 int f8(S8<int, char, double>);
236 int k8 = f8(U8<char>());
237 // CHECK-ELIDE-NOTREE: no matching function for call to 'f8'
238 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'S8<[2 * ...], char>' to 'S8<[2 * ...], double>' for 1st argument
239 // CHECK-NOELIDE-NOTREE: no matching function for call to 'f8'
240 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'S8<int, char, char>' to 'S8<int, char, double>' for 1st argument
241 // CHECK-ELIDE-TREE: no matching function for call to 'f8'
242 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
243 // CHECK-ELIDE-TREE:   S8<
244 // CHECK-ELIDE-TREE:     [2 * ...],
245 // CHECK-ELIDE-TREE:     [char != double]>
246 // CHECK-NOELIDE-TREE: no matching function for call to 'f8'
247 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
248 // CHECK-NOELIDE-TREE:   S8<
249 // CHECK-NOELIDE-TREE:     int,
250 // CHECK-NOELIDE-TREE:     char,
251 // CHECK-NOELIDE-TREE:     [char != double]>
252 
253 template<typename ...T> struct S9 {};
254 template<typename T> using U9 = S9<int, char, T>;
255 template<typename T> using V9 = U9<U9<T>>;
256 int f9(S9<int, char, U9<const double>>);
257 int k9 = f9(V9<double>());
258 
259 // CHECK-ELIDE-NOTREE: no matching function for call to 'f9'
260 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'S9<[2 * ...], S9<[2 * ...], double>>' to 'S9<[2 * ...], S9<[2 * ...], const double>>' for 1st argument
261 // CHECK-NOELIDE-NOTREE: no matching function for call to 'f9'
262 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'S9<int, char, S9<int, char, double>>' to 'S9<int, char, S9<int, char, const double>>' for 1st argument
263 // CHECK-ELIDE-TREE: no matching function for call to 'f9'
264 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
265 // CHECK-ELIDE-TREE:   S9<
266 // CHECK-ELIDE-TREE:     [2 * ...],
267 // CHECK-ELIDE-TREE:     S9<
268 // CHECK-ELIDE-TREE:       [2 * ...],
269 // CHECK-ELIDE-TREE:       [double != const double]>>
270 // CHECK-NOELIDE-TREE: no matching function for call to 'f9'
271 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
272 // CHECK-NOELIDE-TREE:   S9<
273 // CHECK-NOELIDE-TREE:     int,
274 // CHECK-NOELIDE-TREE:     char,
275 // CHECK-NOELIDE-TREE:     S9<
276 // CHECK-NOELIDE-TREE:       int,
277 // CHECK-NOELIDE-TREE:       char,
278 // CHECK-NOELIDE-TREE:       [double != const double]>>
279 
280 template<typename ...A> class class_types {};
set10(class_types<int,int>)281 void set10(class_types<int, int>) {}
test10()282 void test10() {
283   set10(class_types<int>());
284   set10(class_types<int, int, int>());
285 }
286 
287 // CHECK-ELIDE-NOTREE: no matching function for call to 'set10'
288 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'class_types<[...], (no argument)>' to 'class_types<[...], int>' for 1st argument
289 // CHECK-ELIDE-NOTREE: no matching function for call to 'set10'
290 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'class_types<[2 * ...], int>' to 'class_types<[2 * ...], (no argument)>' for 1st argument
291 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set10'
292 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'class_types<int, (no argument)>' to 'class_types<int, int>' for 1st argument
293 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set10'
294 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'class_types<int, int, int>' to 'class_types<int, int, (no argument)>' for 1st argument
295 // CHECK-ELIDE-TREE: no matching function for call to 'set10'
296 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
297 // CHECK-ELIDE-TREE:   class_types<
298 // CHECK-ELIDE-TREE:     [...],
299 // CHECK-ELIDE-TREE:     [(no argument) != int]>
300 // CHECK-ELIDE-TREE: no matching function for call to 'set10'
301 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
302 // CHECK-ELIDE-TREE:   class_types<
303 // CHECK-ELIDE-TREE:     [2 * ...],
304 // CHECK-ELIDE-TREE:     [int != (no argument)]>
305 // CHECK-NOELIDE-TREE: no matching function for call to 'set10'
306 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
307 // CHECK-NOELIDE-TREE:   class_types<
308 // CHECK-NOELIDE-TREE:     int,
309 // CHECK-NOELIDE-TREE:     [(no argument) != int]>
310 // CHECK-NOELIDE-TREE: no matching function for call to 'set10'
311 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
312 // CHECK-NOELIDE-TREE:   class_types<
313 // CHECK-NOELIDE-TREE:     int,
314 // CHECK-NOELIDE-TREE:     int,
315 // CHECK-NOELIDE-TREE:     [int != (no argument)]>
316 
317 template<int ...A> class class_ints {};
set11(class_ints<2,3>)318 void set11(class_ints<2, 3>) {}
test11()319 void test11() {
320   set11(class_ints<1>());
321   set11(class_ints<0, 3, 6>());
322 }
323 // CHECK-ELIDE-NOTREE: no matching function for call to 'set11'
324 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'class_ints<1, (no argument)>' to 'class_ints<2, 3>' for 1st argument
325 // CHECK-ELIDE-NOTREE: no matching function for call to 'set11'
326 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'class_ints<0, [...], 6>' to 'class_ints<2, [...], (no argument)>' for 1st argument
327 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set11'
328 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'class_ints<1, (no argument)>' to 'class_ints<2, 3>' for 1st argument
329 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set11'
330 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'class_ints<0, 3, 6>' to 'class_ints<2, 3, (no argument)>' for 1st argument
331 // CHECK-ELIDE-TREE: no matching function for call to 'set11'
332 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
333 // CHECK-ELIDE-TREE:   class_ints<
334 // CHECK-ELIDE-TREE:     [1 != 2],
335 // CHECK-ELIDE-TREE:     [(no argument) != 3]>
336 // CHECK-ELIDE-TREE: no matching function for call to 'set11'
337 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
338 // CHECK-ELIDE-TREE:   class_ints<
339 // CHECK-ELIDE-TREE:     [0 != 2],
340 // CHECK-ELIDE-TREE:     [...],
341 // CHECK-ELIDE-TREE:     [6 != (no argument)]>
342 // CHECK-NOELIDE-TREE: no matching function for call to 'set11'
343 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
344 // CHECK-NOELIDE-TREE:   class_ints<
345 // CHECK-NOELIDE-TREE:     [1 != 2],
346 // CHECK-NOELIDE-TREE:     [(no argument) != 3]>
347 // CHECK-NOELIDE-TREE: no matching function for call to 'set11'
348 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
349 // CHECK-NOELIDE-TREE:   class_ints<
350 // CHECK-NOELIDE-TREE:     [0 != 2],
351 // CHECK-NOELIDE-TREE:     3,
352 // CHECK-NOELIDE-TREE:     [6 != (no argument)]>
353 
354 template<template<class> class ...A> class class_template_templates {};
355 template<class> class tt1 {};
356 template<class> class tt2 {};
set12(class_template_templates<tt1,tt1>)357 void set12(class_template_templates<tt1, tt1>) {}
test12()358 void test12() {
359   set12(class_template_templates<tt2>());
360   set12(class_template_templates<tt1, tt1, tt1>());
361 }
362 // CHECK-ELIDE-NOTREE: no matching function for call to 'set12'
363 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'class_template_templates<template tt2, template (no argument)>' to 'class_template_templates<template tt1, template tt1>' for 1st argument
364 // CHECK-ELIDE-NOTREE: no matching function for call to 'set12'
365 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'class_template_templates<[2 * ...], template tt1>' to 'class_template_templates<[2 * ...], template (no argument)>' for 1st argument
366 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set12'
367 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'class_template_templates<template tt2, template (no argument)>' to 'class_template_templates<template tt1, template tt1>' for 1st argument
368 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set12'
369 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'class_template_templates<template tt1, template tt1, template tt1>' to 'class_template_templates<template tt1, template tt1, template (no argument)>' for 1st argument
370 // CHECK-ELIDE-TREE: no matching function for call to 'set12'
371 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
372 // CHECK-ELIDE-TREE:   class_template_templates<
373 // CHECK-ELIDE-TREE:     [template tt2 != template tt1],
374 // CHECK-ELIDE-TREE:     [template (no argument) != template tt1]>
375 // CHECK-ELIDE-TREE: no matching function for call to 'set12'
376 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
377 // CHECK-ELIDE-TREE:   class_template_templates<
378 // CHECK-ELIDE-TREE:     [2 * ...],
379 // CHECK-ELIDE-TREE:     [template tt1 != template (no argument)]>
380 // CHECK-NOELIDE-TREE: no matching function for call to 'set12'
381 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
382 // CHECK-NOELIDE-TREE:   class_template_templates<
383 // CHECK-NOELIDE-TREE:     [template tt2 != template tt1],
384 // CHECK-NOELIDE-TREE:     [template (no argument) != template tt1]>
385 // CHECK-NOELIDE-TREE: no matching function for call to 'set12'
386 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
387 // CHECK-NOELIDE-TREE:   class_template_templates<
388 // CHECK-NOELIDE-TREE:     template tt1,
389 // CHECK-NOELIDE-TREE:     template tt1,
390 // CHECK-NOELIDE-TREE:     [template tt1 != template (no argument)]>
391 
392 double a13, b13, c13, d13;
393 template<double* ...A> class class_ptrs {};
set13(class_ptrs<& a13,& b13>)394 void set13(class_ptrs<&a13, &b13>) {}
test13()395 void test13() {
396   set13(class_ptrs<&c13>());
397   set13(class_ptrss<&a13, &b13, &d13>());
398 }
399 // CHECK-ELIDE-NOTREE: no matching function for call to 'set13'
400 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'class_ptrs<&c13, (no argument)>' to 'class_ptrs<&a13, &b13>' for 1st argument
401 // CHECK-ELIDE-NOTREE: no matching function for call to 'set13'
402 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'class_ptrs<[2 * ...], &d13>' to 'class_ptrs<[2 * ...], (no argument)>' for 1st argument
403 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set13'
404 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'class_ptrs<&c13, (no argument)>' to 'class_ptrs<&a13, &b13>' for 1st argument
405 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set13'
406 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'class_ptrs<&a13, &b13, &d13>' to 'class_ptrs<&a13, &b13, (no argument)>' for 1st argument
407 // CHECK-ELIDE-TREE: no matching function for call to 'set13'
408 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
409 // CHECK-ELIDE-TREE:   class_ptrs<
410 // CHECK-ELIDE-TREE:     [&c13 != &a13],
411 // CHECK-ELIDE-TREE:     [(no argument) != &b13]>
412 // CHECK-ELIDE-TREE: no matching function for call to 'set13'
413 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
414 // CHECK-ELIDE-TREE:   class_ptrs<
415 // CHECK-ELIDE-TREE:     [2 * ...],
416 // CHECK-ELIDE-TREE:     [&d13 != (no argument)]>
417 // CHECK-NOELIDE-TREE: no matching function for call to 'set13'
418 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
419 // CHECK-NOELIDE-TREE:   class_ptrs<
420 // CHECK-NOELIDE-TREE:     [&c13 != &a13],
421 // CHECK-NOELIDE-TREE:     [(no argument) != &b13]>
422 // CHECK-NOELIDE-TREE: no matching function for call to 'set13'
423 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
424 // CHECK-NOELIDE-TREE:   class_ptrs<
425 // CHECK-NOELIDE-TREE:     &a13,
426 // CHECK-NOELIDE-TREE:     &b13,
427 // CHECK-NOELIDE-TREE:     [&d13 != (no argument)]>
428 
429 template<typename T> struct s14 {};
430 template<typename T> using a14 = s14<T>;
431 typedef a14<int> b14;
432 template<typename T> using c14 = b14;
433 int f14(c14<int>);
434 int k14 = f14(a14<char>());
435 // CHECK-ELIDE-NOTREE: no matching function for call to 'f14'
436 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'a14<char>' to 'a14<int>' for 1st argument
437 // CHECK-NOELIDE-NOTREE: no matching function for call to 'f14'
438 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'a14<char>' to 'a14<int>' for 1st argument
439 // CHECK-ELIDE-TREE: no matching function for call to 'f14'
440 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
441 // CHECK-ELIDE-TREE:   a14<
442 // CHECK-ELIDE-TREE:     [char != int]>
443 // CHECK-NOELIDE-TREE: no matching function for call to 'f14'
444 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
445 // CHECK-NOELIDE-TREE:   a14<
446 // CHECK-NOELIDE-TREE:     [char != int]>
447 
set15(vector<vector<int>>)448 void set15(vector<vector<int>>) {}
test15()449 void test15() {
450   set15(vector<vector<int>>());
451 }
452 // CHECK-ELIDE-NOTREE-NOT: set15
453 // CHECK-NOELIDE-NOTREE-NOT: set15
454 // CHECK-ELIDE-TREE-NOT: set15
455 // CHECK-NOELIDE-TREE-NOT: set15
456 // no error here
457 
set16(vector<const vector<int>>)458 void set16(vector<const vector<int>>) {}
test16()459 void test16() {
460   set16(vector<const vector<const int>>());
461 }
462 // CHECK-ELIDE-NOTREE: no matching function for call to 'set16'
463 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'vector<const vector<const int>>' to 'vector<const vector<int>>' for 1st argument
464 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set16'
465 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'vector<const vector<const int>>' to 'vector<const vector<int>>' for 1st argument
466 // CHECK-ELIDE-TREE: no matching function for call to 'set16'
467 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
468 // CHECK-ELIDE-TREE:   vector<
469 // CHECK-ELIDE-TREE:     const vector<
470 // CHECK-ELIDE-TREE:       [const != (no qualifiers)] int>>
471 // CHECK-NOELIDE-TREE: no matching function for call to 'set16'
472 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
473 // CHECK-NOELIDE-TREE:   vector<
474 // CHECK-NOELIDE-TREE:     const vector<
475 // CHECK-NOELIDE-TREE:       [const != (no qualifiers)] int>>
476 
set17(vector<vector<int>>)477 void set17(vector<vector<int>>) {}
test17()478 void test17() {
479   set17(vector<const vector<int>>());
480 }
481 // CHECK-ELIDE-NOTREE: no matching function for call to 'set17'
482 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'vector<const vector<...>>' to 'vector<vector<...>>' for 1st argument
483 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set17'
484 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'vector<const vector<int>>' to 'vector<vector<int>>' for 1st argument
485 // CHECK-ELIDE-TREE: no matching function for call to 'set17'
486 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
487 // CHECK-ELIDE-TREE:   vector<
488 // CHECK-ELIDE-TREE:     [const != (no qualifiers)] vector<...>>
489 // CHECK-NOELIDE-TREE: no matching function for call to 'set17'
490 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
491 // CHECK-NOELIDE-TREE:   vector<
492 // CHECK-NOELIDE-TREE:     [const != (no qualifiers)] vector<
493 // CHECK-NOELIDE-TREE:       int>>
494 
set18(vector<const vector<int>>)495 void set18(vector<const vector<int>>) {}
test18()496 void test18() {
497   set18(vector<vector<int>>());
498 }
499 // CHECK-ELIDE-NOTREE: no matching function for call to 'set18'
500 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'vector<vector<...>>' to 'vector<const vector<...>>' for 1st argument
501 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set18'
502 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'vector<vector<int>>' to 'vector<const vector<int>>' for 1st argument
503 // CHECK-ELIDE-TREE: no matching function for call to 'set18'
504 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
505 // CHECK-ELIDE-TREE:   vector<
506 // CHECK-ELIDE-TREE:     [(no qualifiers) != const] vector<...>>
507 // CHECK-NOELIDE-TREE: no matching function for call to 'set18'
508 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
509 // CHECK-NOELIDE-TREE:   vector<
510 // CHECK-NOELIDE-TREE:     [(no qualifiers) != const] vector<
511 // CHECK-NOELIDE-TREE:       int>>
512 
set19(vector<volatile vector<int>>)513 void set19(vector<volatile vector<int>>) {}
test19()514 void test19() {
515   set19(vector<const vector<int>>());
516 }
517 // CHECK-ELIDE-NOTREE: no matching function for call to 'set19'
518 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'vector<const vector<...>>' to 'vector<volatile vector<...>>' for 1st argument
519 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set19'
520 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'vector<const vector<int>>' to 'vector<volatile vector<int>>' for 1st argument
521 // CHECK-ELIDE-TREE: no matching function for call to 'set19'
522 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
523 // CHECK-ELIDE-TREE:   vector<
524 // CHECK-ELIDE-TREE:     [const != volatile] vector<...>>
525 // CHECK-NOELIDE-TREE: no matching function for call to 'set19'
526 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
527 // CHECK-NOELIDE-TREE:   vector<
528 // CHECK-NOELIDE-TREE:     [const != volatile] vector<
529 // CHECK-NOELIDE-TREE:       int>>
530 
set20(vector<const volatile vector<int>>)531 void set20(vector<const volatile vector<int>>) {}
test20()532 void test20() {
533   set20(vector<const vector<int>>());
534 }
535 // CHECK-ELIDE-NOTREE: no matching function for call to 'set20'
536 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'vector<const vector<...>>' to 'vector<const volatile vector<...>>' for 1st argument
537 // CHECK-NOELIDE-NOTREE: no matching function for call to 'set20'
538 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'vector<const vector<int>>' to 'vector<const volatile vector<int>>' for 1st argument
539 // CHECK-ELIDE-TREE: no matching function for call to 'set20'
540 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
541 // CHECK-ELIDE-TREE:   vector<
542 // CHECK-ELIDE-TREE:     [const != const volatile] vector<...>>
543 // CHECK-NOELIDE-TREE: no matching function for call to 'set20'
544 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
545 // CHECK-NOELIDE-TREE:   vector<
546 // CHECK-NOELIDE-TREE:     [const != const volatile] vector<
547 // CHECK-NOELIDE-TREE:       int>>
548 
549 
550 // Checks that volatile does not show up in diagnostics.
551 template<typename T> struct S21 {};
552 template<typename T> using U21 = volatile S21<T>;
553 int f21(vector<const U21<int>>);
554 int k21 = f21(vector<U21<int>>());
555 // CHECK-ELIDE-NOTREE: no matching function for call to 'f21'
556 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'vector<U21<...>>' to 'vector<const U21<...>>' for 1st argument
557 // CHECK-NOELIDE-NOTREE: no matching function for call to 'f21'
558 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'vector<U21<int>>' to 'vector<const U21<int>>' for 1st argument
559 // CHECK-ELIDE-TREE: no matching function for call to 'f21'
560 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
561 // CHECK-ELIDE-TREE:    vector<
562 // CHECK-ELIDE-TREE:      [(no qualifiers) != const] U21<...>>
563 // CHECK-NOELIDE-TREE: no matching function for call to 'f21'
564 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
565 // CHECK-NOELIDE-TREE:    vector<
566 // CHECK-NOELIDE-TREE:      [(no qualifiers) != const] U21<
567 // CHECK-NOELIDE-TREE:        int>>
568 
569 // Checks that volatile does not show up in diagnostics.
570 template<typename T> struct S22 {};
571 template<typename T> using U22 = volatile S22<T>;
572 int f22(vector<volatile const U22<int>>);
573 int k22 = f22(vector<volatile U22<int>>());
574 // CHECK-ELIDE-NOTREE: no matching function for call to 'f22'
575 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'vector<U22<...>>' to 'vector<const U22<...>>' for 1st argument
576 // CHECK-NOELIDE-NOTREE: no matching function for call to 'f22'
577 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'vector<U22<int>>' to 'vector<const U22<int>>' for 1st argument
578 // CHECK-ELIDE-TREE: no matching function for call to 'f22'
579 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
580 // CHECK-ELIDE-TREE:    vector<
581 // CHECK-ELIDE-TREE:      [(no qualifiers) != const] U22<...>>
582 // CHECK-NOELIDE-TREE: no matching function for call to 'f22'
583 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
584 // CHECK-NOELIDE-TREE:    vector<
585 // CHECK-NOELIDE-TREE:      [(no qualifiers) != const] U22<
586 // CHECK-NOELIDE-TREE:        int>>
587 
588 // Testing qualifiers and typedefs.
589 template <class T> struct D23{};
590 template <class T> using C23 = D23<T>;
591 typedef const C23<int> B23;
592 template<class ...T> using A23 = B23;
593 
foo23(D23<A23<>> b)594 void foo23(D23<A23<>> b) {}
test23()595 void test23() {
596   foo23(D23<D23<char>>());
597   foo23(C23<char>());
598 }
599 
600 // CHECK-ELIDE-NOTREE: no matching function for call to 'foo23'
601 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'D23<D23<char>>' to 'D23<const D23<int>>' for 1st argument
602 // CHECK-ELIDE-NOTREE: no matching function for call to 'foo23'
603 // CHECK-ELIDE-NOTREE: candidate function not viable: no known conversion from 'D23<char>' to 'D23<A23<>>' for 1st argument
604 // CHECK-NOELIDE-NOTREE: no matching function for call to 'foo23'
605 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'D23<D23<char>>' to 'D23<const D23<int>>' for 1st argument
606 // CHECK-NOELIDE-NOTREE: no matching function for call to 'foo23'
607 // CHECK-NOELIDE-NOTREE: candidate function not viable: no known conversion from 'D23<char>' to 'D23<A23<>>' for 1st argument
608 // CHECK-ELIDE-TREE: no matching function for call to 'foo23'
609 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
610 // CHECK-ELIDE-TREE:   D23<
611 // CHECK-ELIDE-TREE:     [(no qualifiers) != const] D23<
612 // CHECK-ELIDE-TREE:       [char != int]>>
613 // CHECK-ELIDE-TREE: no matching function for call to 'foo23'
614 // CHECK-ELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
615 // CHECK-ELIDE-TREE:   D23<
616 // CHECK-ELIDE-TREE:     [char != A23<>]>
617 // CHECK-NOELIDE-TREE: no matching function for call to 'foo23'
618 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
619 // CHECK-NOELIDE-TREE:   D23<
620 // CHECK-NOELIDE-TREE:     [(no qualifiers) != const] D23<
621 // CHECK-NOELIDE-TREE:       [char != int]>>
622 // CHECK-NOELIDE-TREE: no matching function for call to 'foo23'
623 // CHECK-NOELIDE-TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
624 // CHECK-NOELIDE-TREE:   D23<
625 // CHECK-NOELIDE-TREE:     [char != A23<>]>
626 
627 namespace PR14015 {
628 template <unsigned N> class Foo1 {};
629 template <unsigned N = 2> class Foo2 {};
630 template <unsigned ...N> class Foo3 {};
631 
Play1()632 void Play1() {
633   Foo1<1> F1;
634   Foo1<2> F2, F3;
635   F2 = F1;
636   F1 = F2;
637   F2 = F3;
638   F3 = F2;
639 }
640 
641 // CHECK-ELIDE-NOTREE: no viable overloaded '='
642 // CHECK-ELIDE-NOTREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from 'Foo1<1>' to 'const Foo1<2>' for 1st argument
643 // CHECK-ELIDE-NOTREE: candidate function (the implicit move assignment operator) not viable: no known conversion from 'Foo1<1>' to 'Foo1<2>' for 1st argument
644 // CHECK-ELIDE-NOTREE: no viable overloaded '='
645 // CHECK-ELIDE-NOTREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from 'Foo1<2>' to 'const Foo1<1>' for 1st argument
646 // CHECK-ELIDE-NOTREE: candidate function (the implicit move assignment operator) not viable: no known conversion from 'Foo1<2>' to 'Foo1<1>' for 1st argument
647 // CHECK-NOELIDE-NOTREE: no viable overloaded '='
648 // CHECK-NOELIDE-NOTREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from 'Foo1<1>' to 'const Foo1<2>' for 1st argument
649 // CHECK-NOELIDE-NOTREE: candidate function (the implicit move assignment operator) not viable: no known conversion from 'Foo1<1>' to 'Foo1<2>' for 1st argument
650 // CHECK-NOELIDE-NOTREE: no viable overloaded '='
651 // CHECK-NOELIDE-NOTREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from 'Foo1<2>' to 'const Foo1<1>' for 1st argument
652 // CHECK-NOELIDE-NOTREE: candidate function (the implicit move assignment operator) not viable: no known conversion from 'Foo1<2>' to 'Foo1<1>' for 1st argument
653 // CHECK-ELIDE-TREE: no viable overloaded '='
654 // CHECK-ELIDE-TREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
655 // CHECK-ELIDE-TREE:   [(no qualifiers) != const] Foo1<
656 // CHECK-ELIDE-TREE:     [1 != 2]>
657 // CHECK-ELIDE-TREE: candidate function (the implicit move assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
658 // CHECK-ELIDE-TREE:   Foo1<
659 // CHECK-ELIDE-TREE:     [1 != 2]>
660 // CHECK-ELIDE-TREE: no viable overloaded '='
661 // CHECK-ELIDE-TREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
662 // CHECK-ELIDE-TREE:   [(no qualifiers) != const] Foo1<
663 // CHECK-ELIDE-TREE:     [2 != 1]>
664 // CHECK-ELIDE-TREE: candidate function (the implicit move assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
665 // CHECK-ELIDE-TREE:   Foo1<
666 // CHECK-ELIDE-TREE:     [2 != 1]>
667 // CHECK-NOELIDE-TREE: no viable overloaded '='
668 // CHECK-NOELIDE-TREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
669 // CHECK-NOELIDE-TREE:   [(no qualifiers) != const] Foo1<
670 // CHECK-NOELIDE-TREE:     [1 != 2]>
671 // CHECK-NOELIDE-TREE: candidate function (the implicit move assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
672 // CHECK-NOELIDE-TREE:   Foo1<
673 // CHECK-NOELIDE-TREE:     [1 != 2]>
674 // CHECK-NOELIDE-TREE: no viable overloaded '='
675 // CHECK-NOELIDE-TREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
676 // CHECK-NOELIDE-TREE:   [(no qualifiers) != const] Foo1<
677 // CHECK-NOELIDE-TREE:     [2 != 1]>
678 // CHECK-NOELIDE-TREE: candidate function (the implicit move assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
679 // CHECK-NOELIDE-TREE:   Foo1<
680 // CHECK-NOELIDE-TREE:     [2 != 1]>
681 
Play2()682 void Play2() {
683   Foo2<1> F1;
684   Foo2<> F2, F3;
685   F2 = F1;
686   F1 = F2;
687   F2 = F3;
688   F3 = F2;
689 }
690 // CHECK-ELIDE-NOTREE: no viable overloaded '='
691 // CHECK-ELIDE-NOTREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from 'Foo2<1>' to 'const Foo2<2>' for 1st argument
692 // CHECK-ELIDE-NOTREE: candidate function (the implicit move assignment operator) not viable: no known conversion from 'Foo2<1>' to 'Foo2<2>' for 1st argument
693 // CHECK-ELIDE-NOTREE: no viable overloaded '='
694 // CHECK-ELIDE-NOTREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from 'Foo2<(default) 2>' to 'const Foo2<1>' for 1st argument
695 // CHECK-ELIDE-NOTREE: candidate function (the implicit move assignment operator) not viable: no known conversion from 'Foo2<(default) 2>' to 'Foo2<1>' for 1st argument
696 // CHECK-NOELIDE-NOTREE: no viable overloaded '='
697 // CHECK-NOELIDE-NOTREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from 'Foo2<1>' to 'const Foo2<2>' for 1st argument
698 // CHECK-NOELIDE-NOTREE: candidate function (the implicit move assignment operator) not viable: no known conversion from 'Foo2<1>' to 'Foo2<2>' for 1st argument
699 // CHECK-NOELIDE-NOTREE: no viable overloaded '='
700 // CHECK-NOELIDE-NOTREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from 'Foo2<(default) 2>' to 'const Foo2<1>' for 1st argument
701 // CHECK-NOELIDE-NOTREE: candidate function (the implicit move assignment operator) not viable: no known conversion from 'Foo2<(default) 2>' to 'Foo2<1>' for 1st argument
702 // CHECK-ELIDE-TREE: no viable overloaded '='
703 // CHECK-ELIDE-TREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
704 // CHECK-ELIDE-TREE:   [(no qualifiers) != const] Foo2<
705 // CHECK-ELIDE-TREE:     [1 != 2]>
706 // CHECK-ELIDE-TREE: candidate function (the implicit move assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
707 // CHECK-ELIDE-TREE:   Foo2<
708 // CHECK-ELIDE-TREE:     [1 != 2]>
709 // CHECK-ELIDE-TREE: no viable overloaded '='
710 // CHECK-ELIDE-TREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
711 // CHECK-ELIDE-TREE:   [(no qualifiers) != const] Foo2<
712 // CHECK-ELIDE-TREE:     [(default) 2 != 1]>
713 // CHECK-ELIDE-TREE: candidate function (the implicit move assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
714 // CHECK-ELIDE-TREE:   Foo2<
715 // CHECK-ELIDE-TREE:     [(default) 2 != 1]>
716 // CHECK-NOELIDE-TREE: no viable overloaded '='
717 // CHECK-NOELIDE-TREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
718 // CHECK-NOELIDE-TREE:   [(no qualifiers) != const] Foo2<
719 // CHECK-NOELIDE-TREE:     [1 != 2]>
720 // CHECK-NOELIDE-TREE: candidate function (the implicit move assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
721 // CHECK-NOELIDE-TREE:   Foo2<
722 // CHECK-NOELIDE-TREE:     [1 != 2]>
723 // CHECK-NOELIDE-TREE: no viable overloaded '='
724 // CHECK-NOELIDE-TREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
725 // CHECK-NOELIDE-TREE:   [(no qualifiers) != const] Foo2<
726 // CHECK-NOELIDE-TREE:     [(default) 2 != 1]>
727 // CHECK-NOELIDE-TREE: candidate function (the implicit move assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
728 // CHECK-NOELIDE-TREE:   Foo2<
729 // CHECK-NOELIDE-TREE:     [(default) 2 != 1]>
730 
Play3()731 void Play3() {
732   Foo3<1> F1;
733   Foo3<2, 1> F2, F3;
734   F2 = F1;
735   F1 = F2;
736   F2 = F3;
737   F3 = F2;
738 }
739 // CHECK-ELIDE-NOTREE: no viable overloaded '='
740 // CHECK-ELIDE-NOTREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from 'Foo3<1, (no argument)>' to 'const Foo3<2, 1>' for 1st argument
741 // CHECK-ELIDE-NOTREE: candidate function (the implicit move assignment operator) not viable: no known conversion from 'Foo3<1, (no argument)>' to 'Foo3<2, 1>' for 1st argument
742 // CHECK-ELIDE-NOTREE: no viable overloaded '='
743 // CHECK-ELIDE-NOTREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from 'Foo3<2, 1>' to 'const Foo3<1, (no argument)>' for 1st argument
744 // CHECK-ELIDE-NOTREE: candidate function (the implicit move assignment operator) not viable: no known conversion from 'Foo3<2, 1>' to 'Foo3<1, (no argument)>' for 1st argument
745 // CHECK-NOELIDE-NOTREE: no viable overloaded '='
746 // CHECK-NOELIDE-NOTREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from 'Foo3<1, (no argument)>' to 'const Foo3<2, 1>' for 1st argument
747 // CHECK-NOELIDE-NOTREE: candidate function (the implicit move assignment operator) not viable: no known conversion from 'Foo3<1, (no argument)>' to 'Foo3<2, 1>' for 1st argument
748 // CHECK-NOELIDE-NOTREE: no viable overloaded '='
749 // CHECK-NOELIDE-NOTREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from 'Foo3<2, 1>' to 'const Foo3<1, (no argument)>' for 1st argument
750 // CHECK-NOELIDE-NOTREE: candidate function (the implicit move assignment operator) not viable: no known conversion from 'Foo3<2, 1>' to 'Foo3<1, (no argument)>' for 1st argument
751 // CHECK-ELIDE-TREE: no viable overloaded '='
752 // CHECK-ELIDE-TREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
753 // CHECK-ELIDE-TREE:   [(no qualifiers) != const] Foo3<
754 // CHECK-ELIDE-TREE:     [1 != 2],
755 // CHECK-ELIDE-TREE:     [(no argument) != 1]>
756 // CHECK-ELIDE-TREE: candidate function (the implicit move assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
757 // CHECK-ELIDE-TREE:   Foo3<
758 // CHECK-ELIDE-TREE:     [1 != 2],
759 // CHECK-ELIDE-TREE:     [(no argument) != 1]>
760 // CHECK-ELIDE-TREE: no viable overloaded '='
761 // CHECK-ELIDE-TREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
762 // CHECK-ELIDE-TREE:   [(no qualifiers) != const] Foo3<
763 // CHECK-ELIDE-TREE:     [2 != 1],
764 // CHECK-ELIDE-TREE:     [1 != (no argument)]>
765 // CHECK-ELIDE-TREE: candidate function (the implicit move assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
766 // CHECK-ELIDE-TREE:   Foo3<
767 // CHECK-ELIDE-TREE:     [2 != 1],
768 // CHECK-ELIDE-TREE:     [1 != (no argument)]>
769 // CHECK-NOELIDE-TREE: no viable overloaded '='
770 // CHECK-NOELIDE-TREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
771 // CHECK-NOELIDE-TREE:   [(no qualifiers) != const] Foo3<
772 // CHECK-NOELIDE-TREE:     [1 != 2],
773 // CHECK-NOELIDE-TREE:     [(no argument) != 1]>
774 // CHECK-NOELIDE-TREE: candidate function (the implicit move assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
775 // CHECK-NOELIDE-TREE:   Foo3<
776 // CHECK-NOELIDE-TREE:     [1 != 2],
777 // CHECK-NOELIDE-TREE:     [(no argument) != 1]>
778 // CHECK-NOELIDE-TREE: no viable overloaded '='
779 // CHECK-NOELIDE-TREE: candidate function (the implicit copy assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
780 // CHECK-NOELIDE-TREE:   [(no qualifiers) != const] Foo3<
781 // CHECK-NOELIDE-TREE:     [2 != 1],
782 // CHECK-NOELIDE-TREE:     [1 != (no argument)]>
783 // CHECK-NOELIDE-TREE: candidate function (the implicit move assignment operator) not viable: no known conversion from argument type to parameter type for 1st argument
784 // CHECK-NOELIDE-TREE:   Foo3<
785 // CHECK-NOELIDE-TREE:     [2 != 1],
786 // CHECK-NOELIDE-TREE:     [1 != (no argument)]>
787 }
788 
789 namespace PR14342 {
790   template<typename T, short a> struct X {};
791   X<int, (signed char)-1> x = X<long, -1>();
792   X<int, 3UL> y = X<int, 2>();
793   // CHECK-ELIDE-NOTREE: error: no viable conversion from 'X<long, [...]>' to 'X<int, [...]>'
794   // CHECK-ELIDE-NOTREE: error: no viable conversion from 'X<[...], 2>' to 'X<[...], 3>'
795 }
796 
797 namespace PR14489 {
798   // The important thing here is that the diagnostic diffs a template specialization
799   // with no arguments against itself.  (We might need a different test if this
800   // diagnostic changes).
801   template<class ...V>
802   struct VariableList   {
ConnectAllToAllPR14489::VariableList803     void ConnectAllToAll(VariableList<>& params = VariableList<>())    {
804     }
805   };
806   // CHECK-ELIDE-NOTREE: non-const lvalue reference to type 'VariableList<>' cannot bind to a temporary of type 'VariableList<>'
807 }
808 
809 namespace rdar12456626 {
810   struct IntWrapper {
811     typedef int type;
812   };
813 
814   template<typename T, typename T::type V>
815   struct X { };
816 
817   struct A {
818     virtual X<IntWrapper, 1> foo();
819   };
820 
821   struct B : A {
822     // CHECK-ELIDE-NOTREE: virtual function 'foo' has a different return type
823     virtual X<IntWrapper, 2> foo();
824   };
825 }
826 
827 namespace PR15023 {
828   // Don't crash when non-QualTypes are passed to a diff modifier.
829   template <typename... Args>
func(void (* func)(Args...),Args...)830   void func(void (*func)(Args...), Args...) { }
831 
bar(int,int &)832   void bar(int, int &) {
833   }
834 
foo(int x)835   void foo(int x) {
836     func(bar, 1, x)
837   }
838   // CHECK-ELIDE-NOTREE: no matching function for call to 'func'
839   // CHECK-ELIDE-NOTREE: candidate template ignored: deduced conflicting types for parameter 'Args' (<int, int &> vs. <int, int>)
840 }
841 
842 namespace rdar12931988 {
843   namespace A {
844     template<typename T> struct X { };
845   }
846 
847   namespace B {
848     template<typename T> struct X { };
849   }
850 
foo(A::X<int> & ax,B::X<int> bx)851   void foo(A::X<int> &ax, B::X<int> bx) {
852     // CHECK-ELIDE-NOTREE: no viable overloaded '='
853     // CHECK-ELIDE-NOTREE: no known conversion from 'B::X<int>' to 'const rdar12931988::A::X<int>'
854     ax = bx;
855   }
856 
857   template<template<typename> class> class Y {};
858 
bar(Y<A::X> ya,Y<B::X> yb)859   void bar(Y<A::X> ya, Y<B::X> yb) {
860     // CHECK-ELIDE-NOTREE: no viable overloaded '='
861     // CHECK-ELIDE-NOTREE: no known conversion from 'Y<template rdar12931988::B::X>' to 'Y<template rdar12931988::A::X>'
862     ya = yb;
863   }
864 }
865 
866 namespace ValueDecl {
867   int int1, int2, default_int;
868   template <const int& T = default_int>
869   struct S {};
870 
871   typedef S<int1> T1;
872   typedef S<int2> T2;
873   typedef S<> TD;
874 
test()875   void test() {
876     T1 t1;
877     T2 t2;
878     TD td;
879 
880     t1 = t2;
881     // CHECK-ELIDE-NOTREE: no viable overloaded '='
882     // CHECK-ELIDE-NOTREE: no known conversion from 'S<int2>' to 'S<int1>'
883 
884     t2 = t1;
885     // CHECK-ELIDE-NOTREE: no viable overloaded '='
886     // CHECK-ELIDE-NOTREE: no known conversion from 'S<int1>' to 'S<int2>'
887 
888     td = t1;
889     // TODO: Find out why (default) isn't printed on second template.
890     // CHECK-ELIDE-NOTREE: no viable overloaded '='
891     // CHECK-ELIDE-NOTREE: no known conversion from 'S<int1>' to 'S<default_int>'
892 
893     t2 = td;
894     // CHECK-ELIDE-NOTREE: no viable overloaded '='
895     // CHECK-ELIDE-NOTREE: no known conversion from 'S<(default) default_int>' to 'S<int2>'
896 
897   }
898 }
899 
900 namespace DependentDefault {
901   template <typename> struct Trait {
902     enum { V = 40 };
903     typedef int Ty;
904     static int I;
905   };
906   int other;
907 
908   template <typename T, int = Trait<T>::V > struct A {};
909   template <typename T, typename = Trait<T>::Ty > struct B {};
910   template <typename T, int& = Trait<T>::I > struct C {};
911 
test()912   void test() {
913 
914     A<int> a1;
915     A<char> a2;
916     A<int, 10> a3;
917     a1 = a2;
918     // CHECK-ELIDE-NOTREE: no viable overloaded '='
919     // CHECK-ELIDE-NOTREE: no known conversion from 'A<char, [...]>' to 'A<int, [...]>'
920     a3 = a1;
921     // CHECK-ELIDE-NOTREE: no viable overloaded '='
922     // CHECK-ELIDE-NOTREE: no known conversion from 'A<[...], (default) Trait<T>::V aka 40>' to 'A<[...], 10>'
923     a2 = a3;
924     // CHECK-ELIDE-NOTREE: no viable overloaded '='
925     // CHECK-ELIDE-NOTREE: no known conversion from 'A<int, 10>' to 'A<char, 40>'
926 
927     B<int> b1;
928     B<char> b2;
929     B<int, char> b3;
930     b1 = b2;
931     // CHECK-ELIDE-NOTREE: no viable overloaded '='
932     // CHECK-ELIDE-NOTREE: no known conversion from 'B<char, [...]>' to 'B<int, [...]>'
933     b3 = b1;
934     // CHECK-ELIDE-NOTREE: no viable overloaded '='
935     // CHECK-ELIDE-NOTREE: no known conversion from 'B<[...], (default) int>' to 'B<[...], char>'
936     b2 = b3;
937     // CHECK-ELIDE-NOTREE: no viable overloaded '='
938     // CHECK-ELIDE-NOTREE: no known conversion from 'B<int, char>' to 'B<char, int>'
939 
940     C<int> c1;
941     C<char> c2;
942     C<int, other> c3;
943     c1 = c2;
944     // CHECK-ELIDE-NOTREE: no viable overloaded '='
945     // CHECK-ELIDE-NOTREE: no known conversion from 'C<char, (default) I>' to 'C<int, I>'
946     c3 = c1;
947     // CHECK-ELIDE-NOTREE: no viable overloaded '='
948     // CHECK-ELIDE-NOTREE: no known conversion from 'C<[...], (default) I>' to 'C<[...], other>'
949     c2 = c3;
950     // CHECK-ELIDE-NOTREE: no viable overloaded '='
951     // CHECK-ELIDE-NOTREE: no known conversion from 'C<int, other>' to 'C<char, I>'
952   }
953 }
954 
955 namespace VariadicDefault {
956   int i1, i2, i3;
957   template <int = 5, int...> struct A {};
958   template <int& = i1, int& ...> struct B {};
959   template <typename = void, typename...> struct C {};
960 
test()961   void test() {
962     A<> a1;
963     A<5, 6, 7> a2;
964     A<1, 2> a3;
965     a2 = a1;
966     // CHECK-ELIDE-NOTREE: no viable overloaded '='
967     // CHECK-ELIDE-NOTREE: no known conversion from 'A<[...], (no argument), (no argument)>' to 'A<[...], 6, 7>'
968     a3 = a1;
969     // CHECK-ELIDE-NOTREE: no viable overloaded '='
970     // CHECK-ELIDE-NOTREE: no known conversion from 'A<(default) 5, (no argument)>' to 'A<1, 2>'
971 
972     B<> b1;
973     B<i1, i2, i3> b2;
974     B<i2, i3> b3;
975     b2 = b1;
976     // CHECK-ELIDE-NOTREE: no viable overloaded '='
977     // CHECK-ELIDE-NOTREE: no known conversion from 'B<[...], (no argument), (no argument)>' to 'B<[...], i2, i3>'
978     b3 = b1;
979     // CHECK-ELIDE-NOTREE: no viable overloaded '='
980     // CHECK-ELIDE-NOTREE: no known conversion from 'B<(default) i1, (no argument)>' to 'B<i2, i3>'
981 
982     B<i1, i2, i3> b4 = b1;
983     // CHECK-ELIDE-NOTREE: no viable conversion from 'B<[...], (no argument), (no argument)>' to 'B<[...], i2, i3>'
984     B<i2, i3> b5 = b1;
985     // CHECK-ELIDE-NOTREE: no viable conversion from 'B<(default) i1, (no argument)>' to 'B<i2, i3>'
986 
987     C<> c1;
988     C<void, void> c2;
989     C<char, char> c3;
990     c2 = c1;
991     // CHECK-ELIDE-NOTREE: no viable overloaded '='
992     // CHECK-ELIDE-NOTREE: no known conversion from 'C<[...], (no argument)>' to 'C<[...], void>'
993     c3 = c1;
994     // CHECK-ELIDE-NOTREE: no viable overloaded '='
995     // CHECK-ELIDE-NOTREE: no known conversion from 'C<(default) void, (no argument)>' to 'C<char, char>'
996   }
997 }
998 
999 namespace PointerArguments {
1000   template <int *p> class T {};
1001   template <int* ...> class U {};
1002   int a, b, c;
1003   int z[5];
test()1004   void test() {
1005     T<&a> ta;
1006     T<z> tz;
1007     T<&b> tb(ta);
1008     // CHECK-ELIDE-NOTREE: no matching constructor for initialization of 'T<&b>'
1009     // CHECK-ELIDE-NOTREE: candidate constructor (the implicit copy constructor) not viable: no known conversion from 'T<&a>' to 'const T<&b>' for 1st argument
1010     T<&c> tc(tz);
1011     // CHECK-ELIDE-NOTREE: no matching constructor for initialization of 'T<&c>'
1012     // CHECK-ELIDE-NOTREE: candidate constructor (the implicit copy constructor) not viable: no known conversion from 'T<z>' to 'const T<&c>' for 1st argument
1013 
1014     U<&a, &a> uaa;
1015     U<&b> ub(uaa);
1016     // CHECK-ELIDE-NOTREE: no matching constructor for initialization of 'U<&b>'
1017     // CHECK-ELIDE-NOTREE: candidate constructor (the implicit copy constructor) not viable: no known conversion from 'U<&a, &a>' to 'const U<&b, (no argument)>' for 1st argument
1018 
1019     U<&b, &b, &b> ubbb(uaa);
1020     // CHECK-ELIDE-NOTREE: no matching constructor for initialization of 'U<&b, &b, &b>'
1021     // CHECK-ELIDE-NOTREE: candidate constructor (the implicit copy constructor) not viable: no known conversion from 'U<&a, &a, (no argument)>' to 'const U<&b, &b, &b>' for 1st argument
1022 
1023   }
1024 }
1025 
1026 namespace DependentInt {
1027   template<int Num> struct INT;
1028 
1029   template <class CLASS, class Int_wrapper = INT<CLASS::val> >
1030   struct C;
1031 
1032   struct N {
1033     static const int val = 1;
1034   };
1035 
1036   template <class M_T>
1037   struct M {};
1038 
test()1039   void test() {
1040     using T1 = M<C<int, INT<0>>>;
1041     using T2 = M<C<N>>;
1042     T2 p;
1043     T1 x = p;
1044     // CHECK-ELIDE-NOTREE: no viable conversion from 'M<C<DependentInt::N, INT<1>>>' to 'M<C<int, INT<0>>>'
1045   }
1046 }
1047 
1048 namespace PR17510 {
1049 class Atom;
1050 
1051 template <typename T> class allocator;
1052 template <typename T, typename A> class vector;
1053 
1054 typedef vector<const Atom *, allocator<const Atom *> > AtomVector;
1055 
1056 template <typename T, typename A = allocator<const Atom *> > class vector {};
1057 
foo()1058 void foo() {
1059   vector<Atom *> v;
1060   AtomVector v2(v);
1061   // CHECK-ELIDE-NOTREE: no known conversion from 'vector<PR17510::Atom *, [...]>' to 'const vector<const PR17510::Atom *, [...]>'
1062 }
1063 }
1064 
1065 namespace PR15677 {
1066 template <bool>
1067 struct A{};
1068 
1069 template <typename T>
1070 using B = A<T::value>;
1071 
1072 template <typename T>
1073 using B = A<!T::value>;
1074 // CHECK-ELIDE-NOTREE: type alias template redefinition with different types ('A<!T::value>' vs 'A<T::value>')
1075 
1076 template <int>
1077 struct C{};
1078 
1079 template <typename T>
1080 using D = C<T::value>;
1081 
1082 template <typename T>
1083 using D = C<T::value + 1>;
1084 // CHECK-ELIDE-NOTREE: type alias template redefinition with different types ('C<T::value + 1>' vs 'C<T::value>')
1085 
1086 template <typename T>
1087 using E = C<T::value>;
1088 
1089 template <typename T>
1090 using E = C<42>;
1091 // CHECK-ELIDE-NOTREE: type alias template redefinition with different types ('C<42>' vs 'C<T::value>')
1092 
1093 template <typename T>
1094 using F = C<T::value>;
1095 
1096 template <typename T>
1097 using F = C<21 + 21>;
1098 // CHECK-ELIDE-NOTREE: type alias template redefinition with different types ('C<21 + 21 aka 42>' vs 'C<T::value>')
1099 }
1100 }
1101 
1102 namespace AddressOf {
1103 template <int*>
1104 struct S {};
1105 
1106 template <class T>
1107 struct Wrapper {};
1108 
1109 template <class T>
1110 Wrapper<T> MakeWrapper();
1111 int global, global2;
1112 constexpr int * ptr = nullptr;
1113 Wrapper<S<ptr>> W = MakeWrapper<S<&global>>();
1114 // Don't print an extra '&' for 'ptr'
1115 // CHECK-ELIDE-NOTREE: no viable conversion from 'Wrapper<S<&global>>' to 'Wrapper<S<ptr aka nullptr>>'
1116 
1117 // Handle parens correctly
1118 Wrapper<S<(&global2)>> W2 = MakeWrapper<S<&global>>();
1119 // CHECK-ELIDE-NOTREE: no viable conversion from 'Wrapper<S<&global>>' to 'Wrapper<S<&global2>>'
1120 Wrapper<S<&global2>> W3 = MakeWrapper<S<(&global)>>();
1121 // CHECK-ELIDE-NOTREE: no viable conversion from 'Wrapper<S<&global>>' to 'Wrapper<S<&global2>>'
1122 Wrapper<S<(&global2)>> W4 = MakeWrapper<S<(&global)>>();
1123 // CHECK-ELIDE-NOTREE: no viable conversion from 'Wrapper<S<&global>>' to 'Wrapper<S<&global2>>'
1124 }
1125 
1126 namespace NullPtr {
1127 template <int*, int*>
1128 struct S {};
1129 
1130 template <class T>
1131 struct Wrapper {};
1132 
1133 template <class T>
1134 Wrapper<T> MakeWrapper();
1135 int global, global2;
1136 constexpr int * ptr = nullptr;
1137 constexpr int * ptr2 = static_cast<int*>(0);
1138 
1139 S<&global> s1 = S<&global, ptr>();
1140 S<&global, nullptr> s2 = S<&global, ptr>();
1141 
1142 S<&global, nullptr> s3 = S<&global, &global>();
1143 // CHECK-ELIDE-NOTREE: no viable conversion from 'S<[...], &global>' to 'S<[...], nullptr>'
1144 S<&global, ptr> s4 = S<&global, &global>();
1145 // CHECK-ELIDE-NOTREE: no viable conversion from 'S<[...], &global>' to 'S<[...], ptr aka nullptr>
1146 
1147 Wrapper<S<&global, nullptr>> W1 = MakeWrapper<S<&global, ptr>>();
1148 Wrapper<S<&global, static_cast<int*>(0)>> W2 = MakeWrapper<S<&global, ptr>>();
1149 
1150 Wrapper<S<&global, nullptr>> W3 = MakeWrapper<S<&global, &global>>();
1151 // CHECK-ELIDE-NOTREE: no viable conversion from 'Wrapper<S<[...], &global>>' to 'Wrapper<S<[...], nullptr>>'
1152 Wrapper<S<&global, ptr>> W4 = MakeWrapper<S<&global, &global>>();
1153 // CHECK-ELIDE-NOTREE: no viable conversion from 'Wrapper<S<[...], &global>>' to 'Wrapper<S<[...], ptr aka nullptr>>'
1154 
1155 Wrapper<S<&global2, ptr>> W5 = MakeWrapper<S<&global, nullptr>>();
1156 // CHECK-ELIDE-NOTREE: no viable conversion from 'Wrapper<S<&global, [...]>>' to 'Wrapper<S<&global2, [...]>>'
1157 Wrapper<S<&global2, nullptr>> W6 = MakeWrapper<S<&global, nullptr>>();
1158 // CHECK-ELIDE-NOTREE: no viable conversion from 'Wrapper<S<&global, [...]>>' to 'Wrapper<S<&global2, [...]>>'
1159 Wrapper<S<&global2, ptr2>> W7 = MakeWrapper<S<&global, nullptr>>();
1160 // CHECK-ELIDE-NOTREE: no viable conversion from 'Wrapper<S<&global, [...]>>' to 'Wrapper<S<&global2, [...]>>'
1161 Wrapper<S<&global2, nullptr>> W8 = MakeWrapper<S<&global, ptr2>>();
1162 // CHECK-ELIDE-NOTREE: no viable conversion from 'Wrapper<S<&global, [...]>>' to 'Wrapper<S<&global2, [...]>>'
1163 Wrapper<S<&global2, ptr>> W9 = MakeWrapper<S<&global, ptr2>>();
1164 // CHECK-ELIDE-NOTREE: no viable conversion from 'Wrapper<S<&global, [...]>>' to 'Wrapper<S<&global2, [...]>>'
1165 Wrapper<S<&global2, ptr2>> W10 = MakeWrapper<S<&global, ptr>>();
1166 // CHECK-ELIDE-NOTREE: no viable conversion from 'Wrapper<S<&global, [...]>>' to 'Wrapper<S<&global2, [...]>>'
1167 Wrapper<S<&global2, static_cast<int *>(0)>> W11 =
1168     MakeWrapper<S<&global, nullptr>>();
1169 // CHECK-ELIDE-NOTREE: no viable conversion from 'Wrapper<S<&global, [...]>>' to 'Wrapper<S<&global2, [...]>>'
1170 Wrapper<S<&global2, nullptr>> W12 =
1171     MakeWrapper<S<&global, static_cast<int *>(0)>>();
1172 // CHECK-ELIDE-NOTREE: no viable conversion from 'Wrapper<S<&global, [...]>>' to 'Wrapper<S<&global2, [...]>>'
1173 
1174 Wrapper<S<&global, &global>> W13 = MakeWrapper<S<&global, ptr>>();
1175 // CHECK-ELIDE-NOTREE: no viable conversion from 'Wrapper<S<[...], nullptr>>' to 'Wrapper<S<[...], &global>>'
1176 Wrapper<S<&global, ptr>> W14 = MakeWrapper<S<&global, &global>>();
1177 // CHECK-ELIDE-NOTREE: no viable conversion from 'Wrapper<S<[...], &global>>' to 'Wrapper<S<[...], ptr aka nullptr>>'
1178 }
1179 
1180 namespace TemplateTemplateDefault {
1181 template <class> class A{};
1182 template <class> class B{};
1183 template <class> class C{};
1184 template <template <class> class, template <class> class = A>
1185         class T {};
1186 
1187 T<A> t1 = T<A, C>();
1188 // CHECK-ELIDE-NOTREE: no viable conversion from 'T<[...], template C>' to 'T<[...], (default) template A>'
1189 T<A, C> t2 = T<A>();
1190 // CHECK-ELIDE-NOTREE: no viable conversion from 'T<[...], (default) template A>' to 'T<[...], template C>'
1191 T<A> t3 = T<B>();
1192 // CHECK-ELIDE-NOTREE: no viable conversion from 'T<template B>' to 'T<template A>'
1193 T<B, C> t4 = T<C, B>();
1194 // CHECK-ELIDE-NOTREE: no viable conversion from 'T<template C, template B>' to 'T<template B, template C>'
1195 T<A, A> t5 = T<B>();
1196 // CHECK-ELIDE-NOTREE: no viable conversion from 'T<template B, [...]>' to 'T<template A, [...]>'
1197 T<B> t6 = T<A, A>();
1198 // CHECK-ELIDE-NOTREE: no viable conversion from 'T<template A, [...]>' to 'T<template B, [...]>'
1199 }
1200 
1201 namespace Bool {
1202 template <class> class A{};
1203 A<bool> a1 = A<int>();
1204 // CHECK-ELIDE-NOTREE: no viable conversion from 'A<int>' to 'A<bool>'
1205 A<int> a2 = A<bool>();
1206 // CHECK-ELIDE-NOTREE: no viable conversion from 'A<bool>' to 'A<int>'
1207 }
1208 
1209 namespace TypeAlias {
1210 template <int, int = 0> class A {};
1211 
1212 template <class T> using a = A<T::num, 0>;
1213 template <class T> using a = A<T::num>;
1214 
1215 template <class T> using A1 = A<T::num>;
1216 template <class T> using A1 = A<T::num + 0>;
1217 // CHECK-ELIDE-NOTREE: type alias template redefinition with different types ('A<T::num + 0>' vs 'A<T::num>')
1218 
1219 template <class T> using A2 = A<1 + T::num>;
1220 template <class T> using A2 = A<T::num + 1>;
1221 // CHECK-ELIDE-NOTREE: type alias template redefinition with different types ('A<T::num + 1>' vs 'A<1 + T::num>')
1222 
1223 template <class T> using A3 = A<(T::num)>;
1224 template <class T> using A3 = A<T::num>;
1225 // CHECK-ELIDE-NOTREE: error: type alias template redefinition with different types ('A<T::num>' vs 'A<(T::num)>')
1226 
1227           template <class T> using A4 = A<(T::num)>;
1228 template <class T> using A4 = A<((T::num))>;
1229 // CHECK-ELIDE-NOTREE: type alias template redefinition with different types ('A<((T::num))>' vs 'A<(T::num)>')
1230 
1231 template <class T> using A5 = A<T::num, 1>;
1232 template <class T> using A5 = A<T::num>;
1233 // CHECK-ELIDE-NOTREE: type alias template redefinition with different types ('A<[...], (default) 0>' vs 'A<[...], 1>')
1234 
1235 template <class T> using A6 = A<T::num + 5, 1>;
1236 template <class T> using A6 = A<T::num + 5>;
1237 // CHECK-ELIDE-NOTREE: type alias template redefinition with different types ('A<[...], (default) 0>' vs 'A<[...], 1>')
1238 
1239 template <class T> using A7 = A<T::num, 1>;
1240 template <class T> using A7 = A<(T::num)>;
1241 // CHECK-ELIDE-NOTREE: type alias template redefinition with different types ('A<(T::num), (default) 0>' vs 'A<T::num, 1>')
1242 }
1243 
1244 namespace TemplateArgumentImplicitConversion {
1245 template <int X> struct condition {};
1246 
1247 struct is_const {
1248     constexpr operator int() const { return 10; }
1249 };
1250 
1251 using T = condition<(is_const())>;
1252 void foo(const T &t) {
1253   T &t2 = t;
1254 }
1255 // CHECK-ELIDE-NOTREE: binding value of type 'const condition<...>' to reference to type 'condition<...>' drops 'const' qualifier
1256 }
1257 
1258 namespace BoolArgumentBitExtended {
1259 template <bool B> struct BoolT {};
1260 
1261 template <typename T> void foo(T) {}
1262 
1263 void test() {
1264   BoolT<false> X;
1265   foo<BoolT<true>>(X);
1266 }
1267 // CHECK-ELIDE-NOTREE: no matching function for call to 'foo'
1268 // CHECK-ELIDE-NOTREE: candidate function [with T = BoolArgumentBitExtended::BoolT<true>] not viable: no known conversion from 'BoolT<false>' to 'BoolT<true>' for 1st argument
1269 }
1270 
1271 namespace DifferentIntegralTypes {
1272 template<typename T, T n>
1273 class A{};
1274 void foo() {
1275   A<int, 1> a1 = A<long long, 1>();
1276   A<unsigned int, 1> a2 = A<int, 5>();
1277   A<bool, true> a3 = A<signed char, true>();
1278 }
1279 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'A<long long, (long long) 1>' to 'A<int, (int) 1>'
1280 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'A<int, (int) 5>' to 'A<unsigned int, (unsigned int) 1>'
1281 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'A<signed char, (signed char) 1>' to 'A<bool, (bool) true>'
1282 }
1283 
1284 namespace MixedDeclarationIntegerArgument {
1285 template<typename T, T n> class A{};
1286 int x;
1287 int y[5];
1288 
1289 A<int, 5> a1 = A<int&, x>();
1290 A<int, 5 - 1> a2 = A<int*, &x>();
1291 A<int, 5 + 1> a3 = A<int*, y>();
1292 A<int, 0> a4 = A<int**, nullptr>();
1293 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'A<int &, x>' to 'A<int, 5>'
1294 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'A<int *, &x>' to 'A<int, 5 - 1 aka 4>'
1295 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'A<int *, y>' to 'A<int, 5 + 1 aka 6>'
1296 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'A<int **, nullptr>' to 'A<int, 0>'
1297 // CHECK-ELIDE-TREE: error: no viable conversion
1298 // CHECK-ELIDE-TREE:   A<
1299 // CHECK-ELIDE-TREE:     [int & != int],
1300 // CHECK-ELIDE-TREE:     [x != 5]>
1301 // CHECK-ELIDE-TREE: error: no viable conversion
1302 // CHECK-ELIDE-TREE:   A<
1303 // CHECK-ELIDE-TREE:     [int * != int],
1304 // CHECK-ELIDE-TREE:     [&x != 5 - 1 aka 4]>
1305 // CHECK-ELIDE-TREE: error: no viable conversion
1306 // CHECK-ELIDE-TREE:   A<
1307 // CHECK-ELIDE-TREE:     [int * != int],
1308 // CHECK-ELIDE-TREE:     [y != 5 + 1 aka 6]>
1309 // CHECK-ELIDE-TREE: error: no viable conversion
1310 // CHECK-ELIDE-TREE:   A<
1311 // CHECK-ELIDE-TREE:     [int ** != int],
1312 // CHECK-ELIDE-TREE:     [nullptr != 0]>
1313 
1314 A<int&, x> a5 = A<int, 3>();
1315 A<int*, &x> a6 = A<int, 3 - 1>();
1316 A<int*, y> a7 = A<int, 3 + 1>();
1317 A<int**, nullptr> a8 = A<int, 3>();
1318 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'A<int, 3>' to 'A<int &, x>'
1319 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'A<int, 3 - 1 aka 2>' to 'A<int *, &x>'
1320 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'A<int, 3 + 1 aka 4>' to 'A<int *, y>'
1321 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'A<int, 3>' to 'A<int **, nullptr>'
1322 // CHECK-ELIDE-TREE: error: no viable conversion
1323 // CHECK-ELIDE-TREE:   A<
1324 // CHECK-ELIDE-TREE:     [int != int &],
1325 // CHECK-ELIDE-TREE:     [3 != x]>
1326 // CHECK-ELIDE-TREE: error: no viable conversion
1327 // CHECK-ELIDE-TREE:   A<
1328 // CHECK-ELIDE-TREE:     [int != int *],
1329 // CHECK-ELIDE-TREE:     [3 - 1 aka 2 != &x]>
1330 // CHECK-ELIDE-TREE: error: no viable conversion
1331 // CHECK-ELIDE-TREE:   A<
1332 // CHECK-ELIDE-TREE:     [int != int *],
1333 // CHECK-ELIDE-TREE:     [3 + 1 aka 4 != y]>
1334 // CHECK-ELIDE-TREE: error: no viable conversion
1335 // CHECK-ELIDE-TREE:   A<
1336 // CHECK-ELIDE-TREE:     [int != int **],
1337 // CHECK-ELIDE-TREE:     [3 != nullptr]>
1338 
1339 template<class T, T n = x> class B{} ;
1340 B<int, 5> b1 = B<int&>();
1341 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'B<int &, (default) x>' to 'B<int, 5>'
1342 // CHECK-ELIDE-TREE: error: no viable conversion
1343 // CHECK-ELIDE-TREE:   B<
1344 // CHECK-ELIDE-TREE:     [int & != int],
1345 // CHECK-ELIDE-TREE:     [(default) x != 5]>
1346 
1347 B<int &> b2 = B<int, 2>();
1348 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'B<int, 2>' to 'B<int &, (default) x>'
1349 // CHECK-ELIDE-TREE:   B<
1350 // CHECK-ELIDE-TREE:     [int != int &],
1351 // CHECK-ELIDE-TREE:     [2 != (default) x]>
1352 
1353 template<class T, T n = 11> class C {};
1354 C<int> c1 = C<int&, x>();
1355 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'C<int &, x>' to 'C<int, (default) 11>'
1356 // CHECK-ELIDE-TREE: error: no viable conversion
1357 // CHECK-ELIDE-TREE:   C<
1358 // CHECK-ELIDE-TREE:     [int & != int],
1359 // CHECK-ELIDE-TREE:     [x != (default) 11]>
1360 
1361 C<int &, x> c2 = C<int>();
1362 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'C<int, (default) 11>' to 'C<int &, x>'
1363 // CHECK-ELIDE-TREE:   C<
1364 // CHECK-ELIDE-TREE:     [int != int &],
1365 // CHECK-ELIDE-TREE:     [(default) 11 != x]>
1366 }
1367 
1368 namespace default_args {
1369   template <int x, int y = 1+1, int z = 2>
1370   class A {};
1371 
1372   void foo(A<0> &M) {
1373     // CHECK-ELIDE-NOTREE: no viable conversion from 'A<[...], (default) 1 + 1 aka 2, (default) 2>' to 'A<[...], 0, 0>'
1374     A<0, 0, 0> N = M;
1375 
1376     // CHECK-ELIDE-NOTREE: no viable conversion from 'A<[2 * ...], (default) 2>' to 'A<[2 * ...], 0>'
1377     A<0, 2, 0> N2 = M;
1378   }
1379 }
1380 
1381 namespace DefaultNonTypeArgWithDependentType {
1382 // We used to crash diffing integer template arguments when the argument type
1383 // is dependent and default arguments were used.
1384 template <typename SizeType = int, SizeType = 0> struct A {};
1385 template <typename R = A<>> R bar();
1386 A<> &foo() { return bar(); }
1387 // CHECK-ELIDE-NOTREE: error: non-const lvalue reference to type 'A<...>' cannot bind to a temporary of type 'A<...>'
1388 // CHECK-NOELIDE-NOTREE: error: non-const lvalue reference to type 'A<int, 0>' cannot bind to a temporary of type 'A<int, 0>'
1389 }
1390 
1391 namespace PR24587 {
1392 template <typename T, T v>
1393 struct integral_constant {};
1394 
1395 auto false_ = integral_constant<bool, false> {};
1396 
1397 template <typename T>
1398 void f(T, decltype(false_));
1399 
1400 void run() {
1401   f(1, integral_constant<bool, true>{});
1402 }
1403 // CHECK-ELIDE-NOTREE: error: no matching function for call to 'f'
1404 // CHECK-ELIDE-NOTREE: note: candidate function [with T = int] not viable: no known conversion from 'integral_constant<[...], true>' to 'integral_constant<[...], false>' for 2nd argument
1405 }
1406 
1407 namespace ZeroArgs {
1408 template <int N = 0> class A {};
1409 template <class T = A<>> class B {};
1410 A<1> a1 = A<>();
1411 A<> a2 = A<1>();
1412 B<> b1 = B<int>();
1413 B<int> b2 = B<>();
1414 B<> b3 = B<const A<>>();
1415 B<const A<>> b4 = B<>();
1416 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'A<(default) 0>' to 'A<1>'
1417 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'A<1>' to 'A<(default) 0>'
1418 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'B<int>' to 'B<(default) ZeroArgs::A<0>>'
1419 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'B<(default) ZeroArgs::A<0>>' to 'B<int>'
1420 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'B<const A<...>>' to 'B<A<...>>'
1421 // CHECK-ELIDE-NOTREE: error: no viable conversion from 'B<A<...>>' to 'B<const A<...>>'
1422 }
1423 
1424 namespace TypeAlias {
1425 
1426 template <typename T> class vector {};
1427 
1428 template <int Dimension> class Point;
1429 template <int dimension, typename T> using Polygon = vector<Point<dimension>>;
1430 
1431 void foo(Polygon<3, float>);
1432 void bar() { foo(Polygon<2, float>()); }
1433 
1434 // CHECK-ELIDE-NOTREE: error: no matching function for call to 'foo'
1435 // CHECK-ELIDE-NOTREE: note: candidate function not viable: no known conversion from 'Polygon<2, [...]>' to 'Polygon<3, [...]>' for 1st argument
1436 
1437 enum class X {
1438   X1,
1439   X2,
1440 };
1441 
1442 template<X x> struct EnumToType;
1443 
1444 template <> struct EnumToType<X::X1> { using type = int; };
1445 
1446 template <> struct EnumToType<X::X2> { using type = double; };
1447 
1448 
1449 template <X x> using VectorType = vector<typename EnumToType<x>::type>;
1450 
1451 template <X x> void D(const VectorType<x>&);
1452 
1453 void run() {
1454   D<X::X1>(VectorType<X::X2>());
1455 }
1456 // CHECK-ELIDE-NOTREE: error: no matching function for call to 'D'
1457 // CHECK-ELIDE-NOTREE: note: candidate function [with x = TypeAlias::X::X1] not viable: no known conversion from 'VectorType<X::X2>' to 'const VectorType<(TypeAlias::X)0>' for 1st argument
1458 
1459 }
1460 
1461 // CHECK-ELIDE-NOTREE: {{[0-9]*}} errors generated.
1462 // CHECK-NOELIDE-NOTREE: {{[0-9]*}} errors generated.
1463 // CHECK-ELIDE-TREE: {{[0-9]*}} errors generated.
1464 // CHECK-NOELIDE-TREE: {{[0-9]*}} errors generated.
1465