1 // RUN: %clang_analyze_cc1 -analyzer-checker=debug.DumpCFG -triple x86_64-apple-darwin12 -std=c++11 -w %s > %t 2>&1
2 // RUN: FileCheck --input-file=%t -check-prefixes=CHECK,CXX11,CXX11-ELIDE %s
3 // RUN: %clang_analyze_cc1 -analyzer-checker=debug.DumpCFG -triple x86_64-apple-darwin12 -std=c++17 -w %s > %t 2>&1
4 // RUN: FileCheck --input-file=%t -check-prefixes=CHECK,CXX17 %s
5 // RUN: %clang_analyze_cc1 -analyzer-checker=debug.DumpCFG -triple x86_64-apple-darwin12 -std=c++11 -w -analyzer-config elide-constructors=false %s > %t 2>&1
6 // RUN: FileCheck --input-file=%t -check-prefixes=CHECK,CXX11,CXX11-NOELIDE %s
7 // RUN: %clang_analyze_cc1 -analyzer-checker=debug.DumpCFG -triple x86_64-apple-darwin12 -std=c++17 -w -analyzer-config elide-constructors=false %s > %t 2>&1
8 // RUN: FileCheck --input-file=%t -check-prefixes=CHECK,CXX17 %s
9 
10 class C {
11 public:
12   C();
13   C(C *);
14   C(int, int);
15 
16   static C get();
17   operator bool() const;
18 };
19 
20 typedef __typeof(sizeof(int)) size_t;
21 void *operator new(size_t size, void *placement);
22 
23 namespace operator_new {
24 
25 // CHECK: void operatorNewWithConstructor()
26 // CHECK:          1: CFGNewAllocator(C *)
27 // CHECK-NEXT:     2:  (CXXConstructExpr, [B1.3], class C)
28 // CHECK-NEXT:     3: new C([B1.2])
29 void operatorNewWithConstructor() {
30   new C();
31 }
32 
33 // CHECK: void operatorNewWithConstructorWithOperatorNewWithContstructor()
34 // CHECK:          1: CFGNewAllocator(C *)
35 // CHECK-NEXT:     2: CFGNewAllocator(C *)
36 // CHECK-NEXT:     3:  (CXXConstructExpr, [B1.4], class C)
37 // CHECK-NEXT:     4: new C([B1.3])
38 // CHECK-NEXT:     5: [B1.4] (CXXConstructExpr, [B1.6], class C)
39 // CHECK-NEXT:     6: new C([B1.5])
40 void operatorNewWithConstructorWithOperatorNewWithContstructor() {
41 	new C(new C());
42 }
43 
44 // CHECK: void operatorPlacementNewWithConstructorWithinPlacementArgument()
45 // CHECK:          1: CFGNewAllocator(C *)
46 // CHECK-NEXT:     2:  (CXXConstructExpr, [B1.3], class C)
47 // CHECK-NEXT:     3: new C([B1.2])
48 // CHECK-NEXT:     4: [B1.3] (ImplicitCastExpr, BitCast, void *)
49 // CHECK-NEXT:     5: CFGNewAllocator(C *)
50 // CHECK-NEXT:     6:  (CXXConstructExpr, [B1.7], class C)
51 // CHECK-NEXT:     7: new ([B1.4]) C([B1.6])
52 void operatorPlacementNewWithConstructorWithinPlacementArgument() {
53 	new (new C()) C();
54 }
55 
56 } // namespace operator_new
57 
58 namespace decl_stmt {
59 
60 // CHECK: void simpleVariable()
61 // CHECK:          1:  (CXXConstructExpr, [B1.2], class C)
62 // CHECK-NEXT:     2: C c;
63 void simpleVariable() {
64   C c;
65 }
66 
67 // CHECK: void simpleVariableWithBraces()
68 // CHECK:          1: {} (CXXConstructExpr, [B1.2], class C)
69 // CHECK-NEXT:     2: C c{};
70 void simpleVariableWithBraces() {
71   C c{};
72 }
73 
74 // CHECK: void simpleVariableWithConstructorArgument()
75 // CHECK:          1: 0
76 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, NullToPointer, class C *)
77 // CHECK-NEXT:     3: [B1.2] (CXXConstructExpr, [B1.4], class C)
78 // CHECK-NEXT:     4: C c(0);
79 void simpleVariableWithConstructorArgument() {
80   C c(0);
81 }
82 
83 // CHECK: void simpleVariableWithOperatorNewInConstructorArgument()
84 // CHECK:          1: CFGNewAllocator(C *)
85 // CHECK-NEXT:     2:  (CXXConstructExpr, [B1.3], class C)
86 // CHECK-NEXT:     3: new C([B1.2])
87 // CHECK-NEXT:     4: [B1.3] (CXXConstructExpr, [B1.5], class C)
88 // CHECK-NEXT:     5: C c(new C());
89 void simpleVariableWithOperatorNewInConstructorArgument() {
90   C c(new C());
91 }
92 
93 // CHECK: void simpleVariableWithOperatorNewInBraces()
94 // CHECK:          1: CFGNewAllocator(C *)
95 // CHECK-NEXT:     2:  (CXXConstructExpr, [B1.3], class C)
96 // CHECK-NEXT:     3: new C([B1.2])
97 // CHECK-NEXT:     4: {[B1.3]} (CXXConstructExpr, [B1.5], class C)
98 // CHECK-NEXT:     5: C c{new C()};
99 void simpleVariableWithOperatorNewInBraces() {
100   C c{new C()};
101 }
102 
103 // CHECK: void simpleVariableInitializedByValue()
104 // CHECK:          1: C::get
105 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, class C (*)(void))
106 // CXX11-ELIDE-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.4], [B1.5])
107 // CXX11-NOELIDE-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.4])
108 // CXX11-NEXT:     4: [B1.3]
109 // CXX11-NEXT:     5: [B1.4] (CXXConstructExpr, [B1.6], class C)
110 // CXX11-NEXT:     6: C c = C::get();
111 // CXX17-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.4])
112 // CXX17-NEXT:     4: C c = C::get();
113 void simpleVariableInitializedByValue() {
114   C c = C::get();
115 }
116 
117 // FIXME: Find construction contexts for both branches in C++17.
118 // Note that once it gets detected, the test for the get() branch would not
119 // fail, because FileCheck allows partial matches.
120 // CHECK: void simpleVariableWithTernaryOperator(bool coin)
121 // CHECK:        [B1]
122 // CXX11-NEXT:     1: [B4.2] ? [B2.5] : [B3.6]
123 // CXX11-NEXT:     2: [B1.1]
124 // CXX11-NEXT:     3: [B1.2] (CXXConstructExpr, [B1.4], class C)
125 // CXX11-NEXT:     4: C c = coin ? C::get() : C(0);
126 // CXX17-NEXT:     1: [B4.2] ? [B2.3] : [B3.4]
127 // CXX17-NEXT:     2: C c = coin ? C::get() : C(0);
128 // CHECK:        [B2]
129 // CHECK-NEXT:     1: C::get
130 // CHECK-NEXT:     2: [B2.1] (ImplicitCastExpr, FunctionToPointerDecay, class C (*)(void))
131 // CXX11-ELIDE-NEXT:     3: [B2.2]() (CXXRecordTypedCall, [B2.4], [B2.5])
132 // CXX11-NOELIDE-NEXT:     3: [B2.2]() (CXXRecordTypedCall, [B2.4])
133 // CXX11-NEXT:     4: [B2.3]
134 // CXX11-ELIDE-NEXT:     5: [B2.4] (CXXConstructExpr, [B1.2], [B1.3], class C)
135 // CXX11-NOELIDE-NEXT:     5: [B2.4] (CXXConstructExpr, [B1.2], class C)
136 // CXX17-NEXT:     3: [B2.2]()
137 // CHECK:        [B3]
138 // CHECK-NEXT:     1: 0
139 // CHECK-NEXT:     2: [B3.1] (ImplicitCastExpr, NullToPointer, class C *)
140 // CXX11-ELIDE-NEXT:     3: [B3.2] (CXXConstructExpr, [B3.5], [B3.6], class C)
141 // CXX11-NOELIDE-NEXT:     3: [B3.2] (CXXConstructExpr, [B3.5], class C)
142 // CXX11-NEXT:     4: C([B3.3]) (CXXFunctionalCastExpr, ConstructorConversion, class C)
143 // CXX11-NEXT:     5: [B3.4]
144 // CXX11-ELIDE-NEXT:     6: [B3.5] (CXXConstructExpr, [B1.2], [B1.3], class C)
145 // CXX11-NOELIDE-NEXT:     6: [B3.5] (CXXConstructExpr, [B1.2], class C)
146 // CXX17-NEXT:     3: [B3.2] (CXXConstructExpr, class C)
147 // CXX17-NEXT:     4: C([B3.3]) (CXXFunctionalCastExpr, ConstructorConversion, class C)
148 // CHECK:        [B4]
149 // CHECK-NEXT:     1: coin
150 // CHECK-NEXT:     2: [B4.1] (ImplicitCastExpr, LValueToRValue, _Bool)
151 // CHECK-NEXT:     T: [B4.2] ? ... : ...
152 void simpleVariableWithTernaryOperator(bool coin) {
153   C c = coin ? C::get() : C(0);
154 }
155 
156 // CHECK: void simpleVariableWithElidableCopy()
157 // CHECK:          1: 0
158 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, NullToPointer, class C *)
159 // CXX11-ELIDE-NEXT:     3: [B1.2] (CXXConstructExpr, [B1.5], [B1.6], class C)
160 // CXX11-NOELIDE-NEXT:     3: [B1.2] (CXXConstructExpr, [B1.5], class C)
161 // CXX17-NEXT:     3: [B1.2] (CXXConstructExpr, [B1.5], class C)
162 // CHECK-NEXT:     4: C([B1.3]) (CXXFunctionalCastExpr, ConstructorConversion, class C)
163 // CXX11-NEXT:     5: [B1.4]
164 // CXX11-NEXT:     6: [B1.5] (CXXConstructExpr, [B1.7], class C)
165 // CXX11-NEXT:     7: C c = C(0);
166 // CXX17-NEXT:     5: C c = C(0);
167 void simpleVariableWithElidableCopy() {
168   C c = C(0);
169 }
170 
171 // CHECK: void referenceVariableWithConstructor()
172 // CHECK:          1: 0
173 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, NullToPointer, class C *)
174 // CHECK-NEXT:     3: [B1.2] (CXXConstructExpr, [B1.4], const class C)
175 // CHECK-NEXT:     4: [B1.3]
176 // CHECK-NEXT:     5: const C &c(0);
177 void referenceVariableWithConstructor() {
178   const C &c(0);
179 }
180 
181 // CHECK: void referenceVariableWithInitializer()
182 // CHECK:          1: C() (CXXConstructExpr, [B1.3], class C)
183 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, NoOp, const class C)
184 // CHECK-NEXT:     3: [B1.2]
185 // CHECK-NEXT:     4: const C &c = C();
186 void referenceVariableWithInitializer() {
187   const C &c = C();
188 }
189 
190 // CHECK: void referenceVariableWithTernaryOperator(bool coin)
191 // CHECK:        [B1]
192 // CXX11-NEXT:     1: [B4.2] ? [B2.5] : [B3.6]
193 // CXX17-NEXT:     1: [B4.2] ? [B2.3] : [B3.4]
194 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, NoOp, const class C)
195 // CHECK-NEXT:     3: [B1.2]
196 // CHECK-NEXT:     4: const C &c = coin ? C::get() : C(0);
197 // CHECK:        [B2]
198 // CHECK-NEXT:     1: C::get
199 // CHECK-NEXT:     2: [B2.1] (ImplicitCastExpr, FunctionToPointerDecay, class C (*)(void))
200 // CXX11-ELIDE-NEXT:     3: [B2.2]() (CXXRecordTypedCall, [B2.4], [B2.5])
201 // CXX11-NOELIDE-NEXT:     3: [B2.2]() (CXXRecordTypedCall, [B2.4])
202 // CXX11-NEXT:     4: [B2.3]
203 // CXX11-NEXT:     5: [B2.4] (CXXConstructExpr, [B1.3], class C)
204 // CXX17-NEXT:     3: [B2.2]() (CXXRecordTypedCall, [B1.3])
205 // CHECK:        [B3]
206 // CHECK-NEXT:     1: 0
207 // CHECK-NEXT:     2: [B3.1] (ImplicitCastExpr, NullToPointer, class C *)
208 // CXX11-ELIDE-NEXT:     3: [B3.2] (CXXConstructExpr, [B3.5], [B3.6], class C)
209 // CXX11-NOELIDE-NEXT:     3: [B3.2] (CXXConstructExpr, [B3.5], class C)
210 // CXX11-NEXT:     4: C([B3.3]) (CXXFunctionalCastExpr, ConstructorConversion, class C)
211 // CXX11-NEXT:     5: [B3.4]
212 // CXX11-NEXT:     6: [B3.5] (CXXConstructExpr, [B1.3], class C)
213 // CXX17-NEXT:     3: [B3.2] (CXXConstructExpr, [B1.3], class C)
214 // CXX17-NEXT:     4: C([B3.3]) (CXXFunctionalCastExpr, ConstructorConversion, class C)
215 // CHECK:        [B4]
216 // CHECK-NEXT:     1: coin
217 // CHECK-NEXT:     2: [B4.1] (ImplicitCastExpr, LValueToRValue, _Bool)
218 // CHECK-NEXT:     T: [B4.2] ? ... : ...
219 void referenceVariableWithTernaryOperator(bool coin) {
220   const C &c = coin ? C::get() : C(0);
221 }
222 
223 } // end namespace decl_stmt
224 
225 namespace ctor_initializers {
226 
227 class D: public C {
228   C c1;
229 
230 public:
231 
232 // CHECK: D()
233 // CHECK:          1:  (CXXConstructExpr, C() (Base initializer), class C)
234 // CHECK-NEXT:     2: C([B1.1]) (Base initializer)
235 // CHECK-NEXT:     3: CFGNewAllocator(C *)
236 // CHECK-NEXT:     4:  (CXXConstructExpr, [B1.5], class C)
237 // CHECK-NEXT:     5: new C([B1.4])
238 // CHECK-NEXT:     6: [B1.5] (CXXConstructExpr, c1([B1.5]) (Member initializer), class C)
239 // CHECK-NEXT:     7: c1([B1.6]) (Member initializer)
240   D(): C(), c1(new C()) {}
241 
242 // CHECK: D(int)
243 // CHECK:          1:  (CXXConstructExpr, D() (Delegating initializer), class ctor_initializers::D)
244 // CHECK-NEXT:     2: D([B1.1]) (Delegating initializer)
245   D(int): D() {}
246 
247 // FIXME: Why is CXXRecordTypedCall not present in C++17? Note that once it gets
248 // detected the test would not fail, because FileCheck allows partial matches.
249 // CHECK: D(double)
250 // CHECK:          1: C::get
251 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, class C (*)(void))
252 // CHECK-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.4])
253 // CHECK-NEXT:     4: [B1.3]
254 // CHECK-NEXT:     5: [B1.4] (CXXConstructExpr, C([B1.4]) (Base initializer), class C)
255 // CHECK-NEXT:     6: C([B1.5]) (Base initializer)
256 // CHECK-NEXT:     7: CFGNewAllocator(C *)
257 // CHECK-NEXT:     8: C::get
258 // CHECK-NEXT:     9: [B1.8] (ImplicitCastExpr, FunctionToPointerDecay, class C (*)(void))
259 // CXX11-ELIDE-NEXT:    10: [B1.9]() (CXXRecordTypedCall, [B1.11], [B1.12])
260 // CXX11-NOELIDE-NEXT:    10: [B1.9]() (CXXRecordTypedCall, [B1.11])
261 // CXX11-NEXT:    11: [B1.10]
262 // CXX11-NEXT:    12: [B1.11] (CXXConstructExpr, [B1.13], class C)
263 // CXX11-NEXT:    13: new C([B1.12])
264 // CXX11-NEXT:    14: [B1.13] (CXXConstructExpr, c1([B1.13]) (Member initializer), class C)
265 // CXX11-NEXT:    15: c1([B1.14]) (Member initializer)
266 // CXX17-NEXT:    10: [B1.9]()
267 // CXX17-NEXT:    11: new C([B1.10])
268 // CXX17-NEXT:    12: [B1.11] (CXXConstructExpr, c1([B1.11]) (Member initializer), class C)
269 // CXX17-NEXT:    13: c1([B1.12]) (Member initializer)
270   D(double): C(C::get()), c1(new C(C::get())) {}
271 };
272 
273 // Let's see if initializers work well for fields with destructors.
274 class E {
275 public:
276   static E get();
277   ~E();
278 };
279 
280 class F {
281   E e;
282 
283 public:
284 // FIXME: There should be no temporary destructor in C++17.
285 // CHECK: F()
286 // CHECK:          1: E::get
287 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, class ctor_initializers::E (*)(
288 // CXX11-ELIDE-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.4], [B1.6], [B1.7])
289 // CXX11-NOELIDE-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.4], [B1.6])
290 // CXX11-NEXT:     4: [B1.3] (BindTemporary)
291 // CXX11-NEXT:     5: [B1.4] (ImplicitCastExpr, NoOp, const class ctor_initializers::E)
292 // CXX11-NEXT:     6: [B1.5]
293 // CXX11-NEXT:     7: [B1.6] (CXXConstructExpr, e([B1.6]) (Member initializer), class ctor_initializers
294 // CXX11-NEXT:     8: e([B1.7]) (Member initializer)
295 // CXX11-NEXT:     9: ~ctor_initializers::E() (Temporary object destructor)
296 // CXX17-NEXT:     3: [B1.2]() (CXXRecordTypedCall, e([B1.4]) (Member initializer), [B1.4])
297 // CXX17-NEXT:     4: [B1.3] (BindTemporary)
298 // CXX17-NEXT:     5: e([B1.4]) (Member initializer)
299 // CXX17-NEXT:     6: ~ctor_initializers::E() (Temporary object destructor)
300   F(): e(E::get()) {}
301 };
302 } // end namespace ctor_initializers
303 
304 namespace return_stmt_without_dtor {
305 
306 // CHECK: C returnVariable()
307 // CHECK:          1:  (CXXConstructExpr, [B1.2], class C)
308 // CHECK-NEXT:     2: C c;
309 // CHECK-NEXT:     3: c
310 // CHECK-NEXT:     4: [B1.3] (ImplicitCastExpr, NoOp, class C)
311 // CHECK-NEXT:     5: [B1.4] (CXXConstructExpr, [B1.6], class C)
312 // CHECK-NEXT:     6: return [B1.5];
313 C returnVariable() {
314   C c;
315   return c;
316 }
317 
318 // CHECK: C returnEmptyBraces()
319 // CHECK:          1: {} (CXXConstructExpr, [B1.2], class C)
320 // CHECK-NEXT:     2: return [B1.1];
321 C returnEmptyBraces() {
322   return {};
323 }
324 
325 // CHECK: C returnBracesWithOperatorNew()
326 // CHECK:          1: CFGNewAllocator(C *)
327 // CHECK-NEXT:     2:  (CXXConstructExpr, [B1.3], class C)
328 // CHECK-NEXT:     3: new C([B1.2])
329 // CHECK-NEXT:     4: {[B1.3]} (CXXConstructExpr, [B1.5], class C)
330 // CHECK-NEXT:     5: return [B1.4];
331 C returnBracesWithOperatorNew() {
332   return {new C()};
333 }
334 
335 // CHECK: C returnBracesWithMultipleItems()
336 // CHECK:          1: 123
337 // CHECK-NEXT:     2: 456
338 // CHECK-NEXT:     3: {[B1.1], [B1.2]} (CXXConstructExpr, [B1.4], class C)
339 // CHECK-NEXT:     4: return [B1.3];
340 C returnBracesWithMultipleItems() {
341   return {123, 456};
342 }
343 
344 // CHECK: C returnTemporary()
345 // CXX11-ELIDE:    1: C() (CXXConstructExpr, [B1.2], [B1.3], class C)
346 // CXX11-NOELIDE:  1: C() (CXXConstructExpr, [B1.2], class C)
347 // CXX11-NEXT:     2: [B1.1]
348 // CXX11-NEXT:     3: [B1.2] (CXXConstructExpr, [B1.4], class C)
349 // CXX11-NEXT:     4: return [B1.3];
350 // CXX17:          1: C() (CXXConstructExpr, [B1.2], class C)
351 // CXX17-NEXT:     2: return [B1.1];
352 C returnTemporary() {
353   return C();
354 }
355 
356 // CHECK: C returnTemporaryWithArgument()
357 // CHECK:          1: nullptr
358 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, NullToPointer, class C *)
359 // CXX11-ELIDE-NEXT: 3: [B1.2] (CXXConstructExpr, [B1.5], [B1.6], class C)
360 // CXX11-NOELIDE-NEXT: 3: [B1.2] (CXXConstructExpr, [B1.5], class C)
361 // CXX17-NEXT:     3: [B1.2] (CXXConstructExpr, [B1.5], class C)
362 // CHECK-NEXT:     4: C([B1.3]) (CXXFunctionalCastExpr, ConstructorConversion, class C)
363 // CXX11-NEXT:     5: [B1.4]
364 // CXX11-NEXT:     6: [B1.5] (CXXConstructExpr, [B1.7], class C)
365 // CXX11-NEXT:     7: return [B1.6];
366 // CXX17-NEXT:     5: return [B1.4];
367 
368 C returnTemporaryWithArgument() {
369   return C(nullptr);
370 }
371 
372 // CHECK: C returnTemporaryConstructedByFunction()
373 // CHECK:          1: C::get
374 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, class C (*)(void))
375 // CXX11-ELIDE-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.4], [B1.5])
376 // CXX11-NOELIDE-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.4])
377 // CXX11-NEXT:     4: [B1.3]
378 // CXX11-NEXT:     5: [B1.4] (CXXConstructExpr, [B1.6], class C)
379 // CXX11-NEXT:     6: return [B1.5];
380 // CXX17-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.4])
381 // CXX17-NEXT:     4: return [B1.3];
382 C returnTemporaryConstructedByFunction() {
383   return C::get();
384 }
385 
386 // CHECK: C returnChainOfCopies()
387 // CHECK:          1: C::get
388 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, class C (*)(void))
389 // CXX11-ELIDE-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.4], [B1.5])
390 // CXX11-NOELIDE-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.4])
391 // CXX11-NEXT:     4: [B1.3]
392 // CXX11-ELIDE-NEXT:     5: [B1.4] (CXXConstructExpr, [B1.7], [B1.8], class C)
393 // CXX11-NOELIDE-NEXT:     5: [B1.4] (CXXConstructExpr, [B1.7], class C)
394 // CXX11-NEXT:     6: C([B1.5]) (CXXFunctionalCastExpr, ConstructorConversion, class C)
395 // CXX11-NEXT:     7: [B1.6]
396 // CXX11-NEXT:     8: [B1.7] (CXXConstructExpr, [B1.9], class C)
397 // CXX11-NEXT:     9: return [B1.8];
398 // CXX17-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.5])
399 // CXX17-NEXT:     4: C([B1.3]) (CXXFunctionalCastExpr, NoOp, class C)
400 // CXX17-NEXT:     5: return [B1.4];
401 C returnChainOfCopies() {
402   return C(C::get());
403 }
404 
405 } // end namespace return_stmt_without_dtor
406 
407 namespace return_stmt_with_dtor {
408 
409 class D {
410 public:
411   D();
412   ~D();
413 };
414 
415 // CHECK:  return_stmt_with_dtor::D returnTemporary()
416 // CXX11-ELIDE:          1: return_stmt_with_dtor::D() (CXXConstructExpr, [B1.2], [B1.4], [B1.5], class return_stmt_with_dtor::D)
417 // CXX11-NOELIDE:          1: return_stmt_with_dtor::D() (CXXConstructExpr, [B1.2], [B1.4], class return_stmt_with_dtor::D)
418 // CXX11-NEXT:     2: [B1.1] (BindTemporary)
419 // CXX11-NEXT:     3: [B1.2] (ImplicitCastExpr, NoOp, const class return_stmt_with_dtor::D)
420 // CXX11-NEXT:     4: [B1.3]
421 // CXX11-NEXT:     5: [B1.4] (CXXConstructExpr, [B1.7], class return_stmt_with_dtor::D)
422 // CXX11-NEXT:     6: ~return_stmt_with_dtor::D() (Temporary object destructor)
423 // CXX11-NEXT:     7: return [B1.5];
424 // CXX17:          1: return_stmt_with_dtor::D() (CXXConstructExpr, [B1.3], [B1.2], class return_stmt_w
425 // CXX17-NEXT:     2: [B1.1] (BindTemporary)
426 // CXX17-NEXT:     3: return [B1.2];
427 D returnTemporary() {
428   return D();
429 }
430 
431 // CHECK: void returnByValueIntoVariable()
432 // CHECK:          1: returnTemporary
433 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, class return_stmt_with_dtor::D (*)(void))
434 // CXX11-ELIDE-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.4], [B1.6], [B1.7])
435 // CXX11-NOELIDE-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.4], [B1.6])
436 // CXX11-NEXT:     4: [B1.3] (BindTemporary)
437 // CXX11-NEXT:     5: [B1.4] (ImplicitCastExpr, NoOp, const class return_stmt_with_dtor::D)
438 // CXX11-NEXT:     6: [B1.5]
439 // CXX11-NEXT:     7: [B1.6] (CXXConstructExpr, [B1.8], class return_stmt_with_dtor::D)
440 // CXX11-NEXT:     8: return_stmt_with_dtor::D d = returnTemporary();
441 // CXX11-NEXT:     9: ~return_stmt_with_dtor::D() (Temporary object destructor)
442 // CXX11-NEXT:    10: [B1.8].~return_stmt_with_dtor::D() (Implicit destructor)
443 // CXX17-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.5], [B1.4])
444 // CXX17-NEXT:     4: [B1.3] (BindTemporary)
445 // CXX17-NEXT:     5: return_stmt_with_dtor::D d = returnTemporary();
446 void returnByValueIntoVariable() {
447   D d = returnTemporary();
448 }
449 
450 } // end namespace return_stmt_with_dtor
451 
452 namespace temporary_object_expr_without_dtors {
453 
454 // TODO: Should provide construction context for the constructor,
455 // even if there is no specific trigger statement here.
456 // CHECK: void simpleTemporary()
457 // CHECK:          1: C() (CXXConstructExpr, class C)
458 void simpleTemporary() {
459   C();
460 }
461 
462 // CHECK: void temporaryInCondition()
463 // CHECK:          1: C() (CXXConstructExpr, [B2.2], class C)
464 // CHECK-NEXT:     2: [B2.1]
465 // CHECK-NEXT:     3: [B2.2] (ImplicitCastExpr, NoOp, const class C)
466 // CHECK-NEXT:     4: [B2.3].operator bool
467 // CHECK-NEXT:     5: [B2.3]
468 // CHECK-NEXT:     6: [B2.5] (ImplicitCastExpr, UserDefinedConversion, _Bool)
469 // CHECK-NEXT:     T: if [B2.6]
470 void temporaryInCondition() {
471   if (C());
472 }
473 
474 // CHECK: void temporaryInConditionVariable()
475 // CXX11-ELIDE:    1: C() (CXXConstructExpr, [B2.2], [B2.3], class C)
476 // CXX11-NOELIDE:  1: C() (CXXConstructExpr, [B2.2], class C)
477 // CXX11-NEXT:     2: [B2.1]
478 // CXX11-NEXT:     3: [B2.2] (CXXConstructExpr, [B2.4], class C)
479 // CXX11-NEXT:     4: C c = C();
480 // CXX11-NEXT:     5: c
481 // CXX11-NEXT:     6: [B2.5] (ImplicitCastExpr, NoOp, const class C)
482 // CXX11-NEXT:     7: [B2.6].operator bool
483 // CXX11-NEXT:     8: [B2.6]
484 // CXX11-NEXT:     9: [B2.8] (ImplicitCastExpr, UserDefinedConversion, _Bool)
485 // CXX11-NEXT:     T: if [B2.9]
486 // CXX17:          1: C() (CXXConstructExpr, [B2.2], class C)
487 // CXX17-NEXT:     2: C c = C();
488 // CXX17-NEXT:     3: c
489 // CXX17-NEXT:     4: [B2.3] (ImplicitCastExpr, NoOp, const class C)
490 // CXX17-NEXT:     5: [B2.4].operator bool
491 // CXX17-NEXT:     6: [B2.4]
492 // CXX17-NEXT:     7: [B2.6] (ImplicitCastExpr, UserDefinedConversion, _Bool)
493 // CXX17-NEXT:     T: if [B2.7]
494 void temporaryInConditionVariable() {
495   if (C c = C());
496 }
497 
498 
499 // CHECK: void temporaryInForLoopConditionVariable()
500 // CHECK:        [B2]
501 // CXX11-ELIDE-NEXT:     1: C() (CXXConstructExpr, [B2.2], [B2.3], class C)
502 // CXX11-NOELIDE-NEXT:     1: C() (CXXConstructExpr, [B2.2], class C)
503 // CXX11-NEXT:     2: [B2.1]
504 // CXX11-NEXT:     3: [B2.2] (CXXConstructExpr, [B2.4], class C)
505 // CXX11-NEXT:     4: C c2 = C();
506 // CXX11-NEXT:     5: c2
507 // CXX11-NEXT:     6: [B2.5] (ImplicitCastExpr, NoOp, const class C)
508 // CXX11-NEXT:     7: [B2.6].operator bool
509 // CXX11-NEXT:     8: [B2.6]
510 // CXX11-NEXT:     9: [B2.8] (ImplicitCastExpr, UserDefinedConversion, _Bool)
511 // CXX11-NEXT:     T: for (...; [B2.9]; )
512 // CXX17-NEXT:     1: C() (CXXConstructExpr, [B2.2], class C)
513 // CXX17-NEXT:     2: C c2 = C();
514 // CXX17-NEXT:     3: c2
515 // CXX17-NEXT:     4: [B2.3] (ImplicitCastExpr, NoOp, const class C)
516 // CXX17-NEXT:     5: [B2.4].operator bool
517 // CXX17-NEXT:     6: [B2.4]
518 // CXX17-NEXT:     7: [B2.6] (ImplicitCastExpr, UserDefinedConversion, _Bool)
519 // CXX17-NEXT:     T: for (...; [B2.7]; )
520 // CHECK:        [B3]
521 // CXX11-ELIDE-NEXT:     1: C() (CXXConstructExpr, [B3.2], [B3.3], class C)
522 // CXX11-NOELIDE-NEXT:     1: C() (CXXConstructExpr, [B3.2], class C)
523 // CXX11-NEXT:     2: [B3.1]
524 // CXX11-NEXT:     3: [B3.2] (CXXConstructExpr, [B3.4], class C)
525 // CXX11-NEXT:     4: C c1 = C();
526 // CXX17-NEXT:     1: C() (CXXConstructExpr, [B3.2], class C)
527 // CXX17-NEXT:     2: C c1 = C();
528 void temporaryInForLoopConditionVariable() {
529   for (C c1 = C(); C c2 = C(); );
530 }
531 
532 
533 // CHECK: void temporaryInWhileLoopConditionVariable()
534 // CXX11-ELIDE:          1: C() (CXXConstructExpr, [B2.2], [B2.3], class C)
535 // CXX11-NOELIDE:          1: C() (CXXConstructExpr, [B2.2], class C)
536 // CXX11-NEXT:     2: [B2.1]
537 // CXX11-NEXT:     3: [B2.2] (CXXConstructExpr, [B2.4], class C)
538 // CXX11-NEXT:     4: C c = C();
539 // CXX11-NEXT:     5: c
540 // CXX11-NEXT:     6: [B2.5] (ImplicitCastExpr, NoOp, const class C)
541 // CXX11-NEXT:     7: [B2.6].operator bool
542 // CXX11-NEXT:     8: [B2.6]
543 // CXX11-NEXT:     9: [B2.8] (ImplicitCastExpr, UserDefinedConversion, _Bool)
544 // CXX11-NEXT:     T: while [B2.9]
545 // CXX17:          1: C() (CXXConstructExpr, [B2.2], class C)
546 // CXX17-NEXT:     2: C c = C();
547 // CXX17-NEXT:     3: c
548 // CXX17-NEXT:     4: [B2.3] (ImplicitCastExpr, NoOp, const class C)
549 // CXX17-NEXT:     5: [B2.4].operator bool
550 // CXX17-NEXT:     6: [B2.4]
551 // CXX17-NEXT:     7: [B2.6] (ImplicitCastExpr, UserDefinedConversion, _Bool)
552 // CXX17-NEXT:     T: while [B2.7]
553 void temporaryInWhileLoopConditionVariable() {
554   while (C c = C());
555 }
556 
557 } // end namespace temporary_object_expr_without_dtors
558 
559 namespace temporary_object_expr_with_dtors {
560 
561 class D {
562 public:
563   D();
564   D(int);
565   ~D();
566 
567   static D get();
568 
569   operator bool() const;
570 };
571 
572 // CHECK: void simpleTemporary()
573 // CHECK:          1: temporary_object_expr_with_dtors::D() (CXXConstructExpr, [B1.2], class temporary_object_expr_with_dtors::D)
574 // CHECK-NEXT:     2: [B1.1] (BindTemporary)
575 // CHECK-NEXT:     3: ~temporary_object_expr_with_dtors::D() (Temporary object destructor)
576 void simpleTemporary() {
577   D();
578 }
579 
580 // CHECK:  void temporaryInCondition()
581 // CHECK:          1: temporary_object_expr_with_dtors::D() (CXXConstructExpr, [B2.2], [B2.3], class temporary_object_expr_with_dtors::D)
582 // CHECK-NEXT:     2: [B2.1] (BindTemporary)
583 // CHECK-NEXT:     3: [B2.2]
584 // CHECK-NEXT:     4: [B2.3] (ImplicitCastExpr, NoOp, const class temporary_object_expr_with_dtors::D)
585 // CHECK-NEXT:     5: [B2.4].operator bool
586 // CHECK-NEXT:     6: [B2.4]
587 // CHECK-NEXT:     7: [B2.6] (ImplicitCastExpr, UserDefinedConversion, _Bool)
588 // CHECK-NEXT:     8: ~temporary_object_expr_with_dtors::D() (Temporary object destructor)
589 // CHECK-NEXT:     T: if [B2.7]
590 void temporaryInCondition() {
591   if (D());
592 }
593 
594 // CHECK: void referenceVariableWithConstructor()
595 // CHECK:          1: 0
596 // CHECK-NEXT:     2: [B1.1] (CXXConstructExpr, [B1.4], const class temporary_object_expr_with_dtors::D)
597 // CHECK-NEXT:     3: [B1.2] (BindTemporary)
598 // CHECK-NEXT:     4: [B1.3]
599 // CHECK-NEXT:     5: const temporary_object_expr_with_dtors::D &d(0);
600 // CHECK-NEXT:     6: [B1.5].~temporary_object_expr_with_dtors::D() (Implicit destructor)
601 void referenceVariableWithConstructor() {
602   const D &d(0);
603 }
604 
605 // CHECK: void referenceVariableWithInitializer()
606 // CHECK:          1: temporary_object_expr_with_dtors::D() (CXXConstructExpr, [B1.4], class temporary_object_expr_with_dtors::D)
607 // CHECK-NEXT:     2: [B1.1] (BindTemporary)
608 // CHECK-NEXT:     3: [B1.2] (ImplicitCastExpr, NoOp, const class temporary_object_expr_with_dtors::D)
609 // CHECK-NEXT:     4: [B1.3]
610 // CHECK-NEXT:     5: const temporary_object_expr_with_dtors::D &d = temporary_object_expr_with_dtors::D();
611 // CHECK-NEXT:     6: [B1.5].~temporary_object_expr_with_dtors::D() (Implicit destructor)
612 void referenceVariableWithInitializer() {
613   const D &d = D();
614 }
615 
616 // CHECK: void referenceVariableWithTernaryOperator(bool coin)
617 // CXX11:        [B1]
618 // CXX11-NEXT:     1: [B4.4].~temporary_object_expr_with_dtors::D() (Implicit destructor)
619 // CXX11:        [B2]
620 // CXX11-NEXT:     1: ~temporary_object_expr_with_dtors::D() (Temporary object destructor)
621 // CXX11:        [B3]
622 // CXX11-NEXT:     1: ~temporary_object_expr_with_dtors::D() (Temporary object destructor)
623 // CXX11:        [B4]
624 // CXX11-NEXT:     1: [B7.2] ? [B5.8] : [B6.8]
625 // CXX11-NEXT:     2: [B4.1] (ImplicitCastExpr, NoOp, const class temporary_object_expr_with_dtors::D)
626 // CXX11-NEXT:     3: [B4.2]
627 // CXX11-NEXT:     4: const temporary_object_expr_with_dtors::D &d = coin ? D::get() : temporary_object_expr_with_dtors::D(0);
628 // CXX11-NEXT:     T: (Temp Dtor) [B6.3]
629 // CXX11:        [B5]
630 // CXX11-NEXT:     1: D::get
631 // CXX11-NEXT:     2: [B5.1] (ImplicitCastExpr, FunctionToPointerDecay, class temporary_object_expr_with_dtors::D (*)(void))
632 // CXX11-ELIDE-NEXT:     3: [B5.2]() (CXXRecordTypedCall, [B5.4], [B5.6], [B5.7])
633 // CXX11-NOELIDE-NEXT:     3: [B5.2]() (CXXRecordTypedCall, [B5.4], [B5.6])
634 // CXX11-NEXT:     4: [B5.3] (BindTemporary)
635 // CXX11-NEXT:     5: [B5.4] (ImplicitCastExpr, NoOp, const class temporary_object_expr_with_dtors::D)
636 // CXX11-NEXT:     6: [B5.5]
637 // CXX11-NEXT:     7: [B5.6] (CXXConstructExpr, [B4.3], class temporary_object_expr_with_dtors::D)
638 // CXX11-NEXT:     8: [B5.7] (BindTemporary)
639 // CXX11:        [B6]
640 // CXX11-NEXT:     1: 0
641 // CXX11-ELIDE-NEXT:     2: [B6.1] (CXXConstructExpr, [B6.3], [B6.6], [B6.7], class temporary_object_expr_with_dtors::D)
642 // CXX11-NOELIDE-NEXT:     2: [B6.1] (CXXConstructExpr, [B6.3], [B6.6], class temporary_object_expr_with_dtors::D)
643 // CXX11-NEXT:     3: [B6.2] (BindTemporary)
644 // CXX11-NEXT:     4: temporary_object_expr_with_dtors::D([B6.3]) (CXXFunctionalCastExpr, ConstructorConversion, class temporary_object_expr_with_dtors::D)
645 // CXX11-NEXT:     5: [B6.4] (ImplicitCastExpr, NoOp, const class temporary_object_expr_with_dtors::D)
646 // CXX11-NEXT:     6: [B6.5]
647 // CXX11-NEXT:     7: [B6.6] (CXXConstructExpr, [B4.3], class temporary_object_expr_with_dtors::D)
648 // CXX11-NEXT:     8: [B6.7] (BindTemporary)
649 // CXX11:        [B7]
650 // CXX11-NEXT:     1: coin
651 // CXX11-NEXT:     2: [B7.1] (ImplicitCastExpr, LValueToRValue, _Bool)
652 // CXX11-NEXT:     T: [B7.2] ? ... : ...
653 // CXX17:        [B1]
654 // CXX17-NEXT:     1: [B4.2] ? [B2.4] : [B3.4]
655 // CXX17-NEXT:     2: [B1.1] (ImplicitCastExpr, NoOp, const class temporary_object_expr_with_dtors::D)
656 // CXX17-NEXT:     3: [B1.2]
657 // CXX17-NEXT:     4: const temporary_object_expr_with_dtors::D &d = coin ? D::get() : temporary_object_expr_with_dtors::D(0);
658 // CXX17-NEXT:     5: [B1.4].~temporary_object_expr_with_dtors::D() (Implicit destructor)
659 // CXX17:        [B2]
660 // CXX17-NEXT:     1: D::get
661 // CXX17-NEXT:     2: [B2.1] (ImplicitCastExpr, FunctionToPointerDecay, class temporary_object_expr_with_dtors::D (*)(void))
662 // CXX17-NEXT:     3: [B2.2]() (CXXRecordTypedCall, [B1.3])
663 // CXX17-NEXT:     4: [B2.3] (BindTemporary)
664 // CXX17:        [B3]
665 // CXX17-NEXT:     1: 0
666 // CXX17-NEXT:     2: [B3.1] (CXXConstructExpr, [B1.3], class temporary_object_expr_with_dtors::D)
667 // CXX17-NEXT:     3: [B3.2] (BindTemporary)
668 // CXX17-NEXT:     4: temporary_object_expr_with_dtors::D([B3.3]) (CXXFunctionalCastExpr, ConstructorConversion, class temporary_object_expr_with_dtors::D)
669 // CXX17:        [B4]
670 // CXX17-NEXT:     1: coin
671 // CXX17-NEXT:     2: [B4.1] (ImplicitCastExpr, LValueToRValue, _Bool)
672 // CXX17-NEXT:     T: [B4.2] ? ... : ...
673 void referenceVariableWithTernaryOperator(bool coin) {
674   const D &d = coin ? D::get() : D(0);
675 }
676 
677 // CHECK: void referenceWithFunctionalCast()
678 // CHECK:          1: 1
679 // CHECK-NEXT:     2: [B1.1] (CXXConstructExpr, [B1.5], class temporary_object_expr_with_dtors::D)
680 // CHECK-NEXT:     3: [B1.2] (BindTemporary)
681 // CHECK-NEXT:     4: temporary_object_expr_with_dtors::D([B1.3]) (CXXFunctionalCastExpr, ConstructorCon
682 // CHECK-NEXT:     5: [B1.4]
683 // CHECK-NEXT:     6: temporary_object_expr_with_dtors::D &&d = temporary_object_expr_with_dtors::D(1);
684 // CHECK-NEXT:     7: [B1.6].~temporary_object_expr_with_dtors::D() (Implicit destructor)
685 void referenceWithFunctionalCast() {
686   D &&d = D(1);
687 }
688 
689 // Test the condition constructor, we don't care about branch constructors here.
690 // CHECK: void constructorInTernaryCondition()
691 // CXX11:          1: 1
692 // CXX11-NEXT:     2: [B7.1] (CXXConstructExpr, [B7.3], [B7.5], class temporary_object_expr_with_dtors::D)
693 // CXX11-NEXT:     3: [B7.2] (BindTemporary)
694 // CXX11-NEXT:     4: temporary_object_expr_with_dtors::D([B7.3]) (CXXFunctionalCastExpr, ConstructorConversion, class temporary_object_expr_with_dtors::D)
695 // CXX11-NEXT:     5: [B7.4]
696 // CXX11-NEXT:     6: [B7.5] (ImplicitCastExpr, NoOp, const class temporary_object_expr_with_dtors::D)
697 // CXX11-NEXT:     7: [B7.6].operator bool
698 // CXX11-NEXT:     8: [B7.6]
699 // CXX11-NEXT:     9: [B7.8] (ImplicitCastExpr, UserDefinedConversion, _Bool)
700 // CXX11-NEXT:     T: [B7.9] ? ... : ...
701 // CXX17:          1: 1
702 // CXX17-NEXT:     2: [B4.1] (CXXConstructExpr, [B4.3], [B4.5], class temporary_object_expr_with_dtors::D)
703 // CXX17-NEXT:     3: [B4.2] (BindTemporary)
704 // CXX17-NEXT:     4: temporary_object_expr_with_dtors::D([B4.3]) (CXXFunctionalCastExpr, ConstructorConversion, class temporary_object_expr_with_dtors::D)
705 // CXX17-NEXT:     5: [B4.4]
706 // CXX17-NEXT:     6: [B4.5] (ImplicitCastExpr, NoOp, const class temporary_object_expr_with_dtors::D)
707 // CXX17-NEXT:     7: [B4.6].operator bool
708 // CXX17-NEXT:     8: [B4.6]
709 // CXX17-NEXT:     9: [B4.8] (ImplicitCastExpr, UserDefinedConversion, _Bool)
710 // CXX17-NEXT:     T: [B4.9] ? ... : ...
711 void constructorInTernaryCondition() {
712   const D &d = D(1) ? D(2) : D(3);
713 }
714 
715 } // end namespace temporary_object_expr_with_dtors
716 
717 namespace implicit_constructor_conversion {
718 
719 class A {};
720 A get();
721 
722 class B {
723 public:
724   B(const A &);
725   ~B() {}
726 };
727 
728 // CHECK: void implicitConstructionConversionFromTemporary()
729 // CHECK:          1: implicit_constructor_conversion::A() (CXXConstructExpr, [B1.3], class implicit_constructor_conversion::A)
730 // CXX11-NEXT:     2: [B1.1] (ImplicitCastExpr, NoOp, const class implicit_constructor_conversion::A)
731 // CXX11-NEXT:     3: [B1.2]
732 // CXX11-ELIDE-NEXT:     4: [B1.3] (CXXConstructExpr, [B1.6], [B1.8], [B1.9], class implicit_constructor_conversion::B)
733 // CXX11-NOELIDE-NEXT:     4: [B1.3] (CXXConstructExpr, [B1.6], [B1.8], class implicit_constructor_conversion::B)
734 // CXX11-NEXT:     5: [B1.4] (ImplicitCastExpr, ConstructorConversion, class implicit_constructor_conversion::B)
735 // CXX11-NEXT:     6: [B1.5] (BindTemporary)
736 // CXX11-NEXT:     7: [B1.6] (ImplicitCastExpr, NoOp, const class implicit_constructor_conversion::B)
737 // CXX11-NEXT:     8: [B1.7]
738 // CXX11-NEXT:     9: [B1.8] (CXXConstructExpr, [B1.10], class implicit_constructor_conversion::B)
739 // CXX11-NEXT:    10: implicit_constructor_conversion::B b = implicit_constructor_conversion::A();
740 // CXX11-NEXT:    11: ~implicit_constructor_conversion::B() (Temporary object destructor)
741 // CXX11-NEXT:    12: [B1.10].~implicit_constructor_conversion::B() (Implicit destructor)
742 // CXX17-NEXT:     2: [B1.1] (ImplicitCastExpr, NoOp, const class implicit_constructor_conversion::A)
743 // CXX17-NEXT:     3: [B1.2]
744 // CXX17-NEXT:     4: [B1.3] (CXXConstructExpr, [B1.6], class implicit_constructor_conversion::B)
745 // CXX17-NEXT:     5: [B1.4] (ImplicitCastExpr, ConstructorConversion, class implicit_constructor_conversion::B)
746 // CXX17-NEXT:     6: implicit_constructor_conversion::B b = implicit_constructor_conversion::A();
747 // CXX17-NEXT:     7: [B1.6].~implicit_constructor_conversion::B() (Implicit destructor)
748 void implicitConstructionConversionFromTemporary() {
749   B b = A();
750 }
751 
752 // CHECK: void implicitConstructionConversionFromFunctionValue()
753 // CHECK:          1: get
754 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, class implicit_constructor_conversion::A (*)(void))
755 // CHECK-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.5])
756 // CHECK-NEXT:     4: [B1.3] (ImplicitCastExpr, NoOp, const class implicit_constructor_conversion::A)
757 // CHECK-NEXT:     5: [B1.4]
758 // CXX11-ELIDE-NEXT:     6: [B1.5] (CXXConstructExpr, [B1.8], [B1.10], [B1.11], class implicit_constructor_conversion::B)
759 // CXX11-NOELIDE-NEXT:     6: [B1.5] (CXXConstructExpr, [B1.8], [B1.10], class implicit_constructor_conversion::B)
760 // CXX11-NEXT:     7: [B1.6] (ImplicitCastExpr, ConstructorConversion, class implicit_constructor_conversion::B)
761 // CXX11-NEXT:     8: [B1.7] (BindTemporary)
762 // CXX11-NEXT:     9: [B1.8] (ImplicitCastExpr, NoOp, const class implicit_constructor_conversion::B)
763 // CXX11-NEXT:    10: [B1.9]
764 // CXX11-NEXT:    11: [B1.10] (CXXConstructExpr, [B1.12], class implicit_constructor_conversion::B)
765 // CXX11-NEXT:    12: implicit_constructor_conversion::B b = get();
766 // CXX11-NEXT:    13: ~implicit_constructor_conversion::B() (Temporary object destructor)
767 // CXX11-NEXT:    14: [B1.12].~implicit_constructor_conversion::B() (Implicit destructor)
768 // CXX17-NEXT:     6: [B1.5] (CXXConstructExpr, [B1.8], class implicit_constructor_conversion::B)
769 // CXX17-NEXT:     7: [B1.6] (ImplicitCastExpr, ConstructorConversion, class implicit_constructor_conversion::B)
770 // CXX17-NEXT:     8: implicit_constructor_conversion::B b = get();
771 // CXX17-NEXT:     9: [B1.8].~implicit_constructor_conversion::B() (Implicit destructor)
772 void implicitConstructionConversionFromFunctionValue() {
773   B b = get();
774 }
775 
776 // CHECK: void implicitConstructionConversionFromTemporaryWithLifetimeExtension()
777 // CHECK:          1: implicit_constructor_conversion::A() (CXXConstructExpr, [B1.3], class implicit_constructor_conversion::A)
778 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, NoOp, const class implicit_constructor_conversion::A)
779 // CHECK-NEXT:     3: [B1.2]
780 // CHECK-NEXT:     4: [B1.3] (CXXConstructExpr, [B1.7], class implicit_constructor_conversion::B)
781 // CHECK-NEXT:     5: [B1.4] (ImplicitCastExpr, ConstructorConversion, class implicit_constructor_conversion::B)
782 // CHECK-NEXT:     6: [B1.5] (ImplicitCastExpr, NoOp, const class implicit_constructor_conversion::B)
783 // CHECK-NEXT:     7: [B1.6]
784 // CHECK-NEXT:     8: const implicit_constructor_conversion::B &b = implicit_constructor_conversion::A();
785 // CHECK-NEXT:     9: [B1.8].~implicit_constructor_conversion::B() (Implicit destructor)
786 void implicitConstructionConversionFromTemporaryWithLifetimeExtension() {
787   const B &b = A();
788 }
789 
790 // CHECK: void implicitConstructionConversionFromFunctionValueWithLifetimeExtension()
791 // CHECK:          1: get
792 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, class implicit_constructor_conver
793 // CHECK-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.5])
794 // CHECK-NEXT:     4: [B1.3] (ImplicitCastExpr, NoOp, const class implicit_constructor_conversion::A)
795 // CHECK-NEXT:     5: [B1.4]
796 // CHECK-NEXT:     6: [B1.5] (CXXConstructExpr, [B1.9], class implicit_constructor_conversion::B)
797 // CHECK-NEXT:     7: [B1.6] (ImplicitCastExpr, ConstructorConversion, class implicit_constructor_convers
798 // CHECK-NEXT:     8: [B1.7] (ImplicitCastExpr, NoOp, const class implicit_constructor_conversion::B)
799 // CHECK-NEXT:     9: [B1.8]
800 // CHECK-NEXT:    10: const implicit_constructor_conversion::B &b = get();
801 // CHECK-NEXT:    11: [B1.10].~implicit_constructor_conversion::B() (Implicit destructor)
802 void implicitConstructionConversionFromFunctionValueWithLifetimeExtension() {
803   const B &b = get(); // no-crash
804 }
805 
806 } // end namespace implicit_constructor_conversion
807 
808 namespace argument_constructors {
809 class D {
810 public:
811   D();
812   ~D();
813 };
814 
815 class E {
816 public:
817   E(D d);
818   E(D d1, D d2);
819 };
820 
821 void useC(C c);
822 void useCByReference(const C &c);
823 void useD(D d);
824 void useDByReference(const D &d);
825 void useCAndD(C c, D d);
826 
827 // CHECK: void passArgument()
828 // CHECK:          1: useC
829 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, void (*)(class C))
830 // CXX11-ELIDE-NEXT:     3: C() (CXXConstructExpr, [B1.4], [B1.5], class C)
831 // CXX11-NOELIDE-NEXT:     3: C() (CXXConstructExpr, [B1.4], class C)
832 // CXX11-NEXT:     4: [B1.3]
833 // CXX11-NEXT:     5: [B1.4] (CXXConstructExpr, [B1.6]+0, class C)
834 // CXX11-NEXT:     6: [B1.2]([B1.5])
835 // CXX17-NEXT:     3: C() (CXXConstructExpr, [B1.4]+0, class C)
836 // CXX17-NEXT:     4: [B1.2]([B1.3])
837 void passArgument() {
838   useC(C());
839 }
840 
841 // CHECK: void passTwoArguments()
842 // CHECK:        [B1]
843 // CHECK-NEXT:     1: useCAndD
844 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, void (*)(class C, class argument_constructors::D))
845 // CXX11-ELIDE-NEXT:     3: C() (CXXConstructExpr, [B1.4], [B1.5], class C)
846 // CXX11-NOELIDE-NEXT:     3: C() (CXXConstructExpr, [B1.4], class C)
847 // CXX11-NEXT:     4: [B1.3]
848 // CXX11-NEXT:     5: [B1.4] (CXXConstructExpr, [B1.12]+0, class C)
849 // CXX11-ELIDE-NEXT:     6: argument_constructors::D() (CXXConstructExpr, [B1.7], [B1.9], [B1.10], class argument_constructors::D)
850 // CXX11-NOELIDE-NEXT:     6: argument_constructors::D() (CXXConstructExpr, [B1.7], [B1.9], class argument_constructors::D)
851 // CXX11-NEXT:     7: [B1.6] (BindTemporary)
852 // CXX11-NEXT:     8: [B1.7] (ImplicitCastExpr, NoOp, const class argument_constructors::D)
853 // CXX11-NEXT:     9: [B1.8]
854 // CXX11-NEXT:    10: [B1.9] (CXXConstructExpr, [B1.11], [B1.12]+1, class argument_constructors::D)
855 // CXX11-NEXT:    11: [B1.10] (BindTemporary)
856 // CXX11-NEXT:    12: [B1.2]([B1.5], [B1.11])
857 // CXX11-NEXT:    13: ~argument_constructors::D() (Temporary object destructor)
858 // CXX11-NEXT:    14: ~argument_constructors::D() (Temporary object destructor)
859 // CXX17-NEXT:     3: C() (CXXConstructExpr, [B1.6]+0, class C)
860 // CXX17-NEXT:     4: argument_constructors::D() (CXXConstructExpr, [B1.5], [B1.6]+1, class argument_co
861 // CXX17-NEXT:     5: [B1.4] (BindTemporary)
862 // CXX17-NEXT:     6: [B1.2]([B1.3], [B1.5])
863 // CXX17-NEXT:     7: ~argument_constructors::D() (Temporary object destructor)
864 void passTwoArguments() {
865   useCAndD(C(), D());
866 }
867 
868 // CHECK: void passArgumentByReference()
869 // CHECK:          1: useCByReference
870 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, void (*)(const class C &))
871 // CHECK-NEXT:     3: C() (CXXConstructExpr, [B1.5], class C)
872 // CHECK-NEXT:     4: [B1.3] (ImplicitCastExpr, NoOp, const class C)
873 // CHECK-NEXT:     5: [B1.4]
874 // CHECK-NEXT:     6: [B1.2]([B1.5])
875 void passArgumentByReference() {
876   useCByReference(C());
877 }
878 
879 // CHECK: void passArgumentWithDestructor()
880 // CHECK:          1: useD
881 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, void (*)(class argument_constructors::D))
882 // CXX11-ELIDE-NEXT:     3: argument_constructors::D() (CXXConstructExpr, [B1.4], [B1.6], [B1.7], class argument_constructors::D)
883 // CXX11-NOELIDE-NEXT:     3: argument_constructors::D() (CXXConstructExpr, [B1.4], [B1.6], class argument_constructors::D)
884 // CXX11-NEXT:     4: [B1.3] (BindTemporary)
885 // CXX11-NEXT:     5: [B1.4] (ImplicitCastExpr, NoOp, const class argument_constructors::D)
886 // CXX11-NEXT:     6: [B1.5]
887 // CXX11-NEXT:     7: [B1.6] (CXXConstructExpr, [B1.8], [B1.9]+0, class argument_constructors::D)
888 // CXX11-NEXT:     8: [B1.7] (BindTemporary)
889 // CXX11-NEXT:     9: [B1.2]([B1.8])
890 // CXX11-NEXT:    10: ~argument_constructors::D() (Temporary object destructor)
891 // CXX11-NEXT:    11: ~argument_constructors::D() (Temporary object destructor)
892 // CXX17-NEXT:     3: argument_constructors::D() (CXXConstructExpr, [B1.4], [B1.5]+0, class argument_constructors::D)
893 // CXX17-NEXT:     4: [B1.3] (BindTemporary)
894 // CXX17-NEXT:     5: [B1.2]([B1.4])
895 // CXX17-NEXT:     6: ~argument_constructors::D() (Temporary object destructor)
896 void passArgumentWithDestructor() {
897   useD(D());
898 }
899 
900 // CHECK: void passArgumentWithDestructorByReference()
901 // CHECK:          1: useDByReference
902 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, void (*)(const class argumen
903 // CHECK-NEXT:     3: argument_constructors::D() (CXXConstructExpr, [B1.4], [B1.6], class argument_c
904 // CHECK-NEXT:     4: [B1.3] (BindTemporary)
905 // CHECK-NEXT:     5: [B1.4] (ImplicitCastExpr, NoOp, const class argument_constructors::D)
906 // CHECK-NEXT:     6: [B1.5]
907 // CHECK-NEXT:     7: [B1.2]([B1.6])
908 // CHECK-NEXT:     8: ~argument_constructors::D() (Temporary object destructor)
909 void passArgumentWithDestructorByReference() {
910   useDByReference(D());
911 }
912 
913 // CHECK: void passArgumentIntoAnotherConstructor()
914 // CXX11-ELIDE:          1: argument_constructors::D() (CXXConstructExpr, [B1.2], [B1.4], [B1.5], class argument_constructors::D)
915 // CXX11-NOELIDE:          1: argument_constructors::D() (CXXConstructExpr, [B1.2], [B1.4], class argument_constructors::D)
916 // CXX11-NEXT:     2: [B1.1] (BindTemporary)
917 // CXX11-NEXT:     3: [B1.2] (ImplicitCastExpr, NoOp, const class argument_constructors::D)
918 // CXX11-NEXT:     4: [B1.3]
919 // CXX11-NEXT:     5: [B1.4] (CXXConstructExpr, [B1.6], [B1.7]+0, class argument_constructors::D)
920 // CXX11-NEXT:     6: [B1.5] (BindTemporary)
921 // CXX11-ELIDE-NEXT:     7: [B1.6] (CXXConstructExpr, [B1.9], [B1.10], class argument_constructors::E)
922 // CXX11-NOELIDE-NEXT:     7: [B1.6] (CXXConstructExpr, [B1.9], class argument_constructors::E)
923 // CXX11-NEXT:     8: argument_constructors::E([B1.7]) (CXXFunctionalCastExpr, ConstructorConversion, class argument_constructors::E)
924 // CXX11-NEXT:     9: [B1.8]
925 // CXX11-NEXT:    10: [B1.9] (CXXConstructExpr, [B1.11], class argument_constructors::E)
926 // CXX11-NEXT:    11: argument_constructors::E e = argument_constructors::E(argument_constructors::D());
927 // CXX11-NEXT:    12: ~argument_constructors::D() (Temporary object destructor)
928 // CXX11-NEXT:    13: ~argument_constructors::D() (Temporary object destructor)
929 // CXX17:          1: argument_constructors::D() (CXXConstructExpr, [B1.2], [B1.3]+0, class argument_constructors::D)
930 // CXX17-NEXT:     2: [B1.1] (BindTemporary)
931 // CXX17-NEXT:     3: [B1.2] (CXXConstructExpr, [B1.5], class argument_constructors::E)
932 // CXX17-NEXT:     4: argument_constructors::E([B1.3]) (CXXFunctionalCastExpr, ConstructorConversion, class argument_constructors::E)
933 // CXX17-NEXT:     5: argument_constructors::E e = argument_constructors::E(argument_constructors::D());
934 // CXX17-NEXT:     6: ~argument_constructors::D() (Temporary object destructor)
935 void passArgumentIntoAnotherConstructor() {
936   E e = E(D());
937 }
938 
939 
940 // CHECK: void passTwoArgumentsIntoAnotherConstructor()
941 // CXX11-ELIDE:          1: argument_constructors::D() (CXXConstructExpr, [B1.2], [B1.4], [B1.5], class argument_constructors::D)
942 // CXX11-NOELIDE:          1: argument_constructors::D() (CXXConstructExpr, [B1.2], [B1.4], class argument_constructors::D)
943 // CXX11-NEXT:     2: [B1.1] (BindTemporary)
944 // CXX11-NEXT:     3: [B1.2] (ImplicitCastExpr, NoOp, const class argument_constructors::D)
945 // CXX11-NEXT:     4: [B1.3]
946 // CXX11-NEXT:     5: [B1.4] (CXXConstructExpr, [B1.6], [B1.13]+0, class argument_constructors::D)
947 // CXX11-NEXT:     6: [B1.5] (BindTemporary)
948 // CXX11-ELIDE-NEXT:     7: argument_constructors::D() (CXXConstructExpr, [B1.8], [B1.10], [B1.11], class argument_constructors::D)
949 // CXX11-NOELIDE-NEXT:     7: argument_constructors::D() (CXXConstructExpr, [B1.8], [B1.10], class argument_constructors::D)
950 // CXX11-NEXT:     8: [B1.7] (BindTemporary)
951 // CXX11-NEXT:     9: [B1.8] (ImplicitCastExpr, NoOp, const class argument_constructors::D)
952 // CXX11-NEXT:    10: [B1.9]
953 // CXX11-NEXT:    11: [B1.10] (CXXConstructExpr, [B1.12], [B1.13]+1, class argument_constructors::D)
954 // CXX11-NEXT:    12: [B1.11] (BindTemporary)
955 // CXX11-NEXT:    13: argument_constructors::E([B1.6], [B1.12]) (CXXConstructExpr, class argument_constructors::E)
956 // CXX11-NEXT:    14: ~argument_constructors::D() (Temporary object destructor)
957 // CXX11-NEXT:    15: ~argument_constructors::D() (Temporary object destructor)
958 // CXX11-NEXT:    16: ~argument_constructors::D() (Temporary object destructor)
959 // CXX11-NEXT:    17: ~argument_constructors::D() (Temporary object destructor)
960 // CXX17:          1: argument_constructors::D() (CXXConstructExpr, [B1.2], [B1.5]+0, class argument_constructors::D)
961 // CXX17-NEXT:     2: [B1.1] (BindTemporary)
962 // CXX17-NEXT:     3: argument_constructors::D() (CXXConstructExpr, [B1.4], [B1.5]+1, class argument_constructors::D)
963 // CXX17-NEXT:     4: [B1.3] (BindTemporary)
964 // CXX17-NEXT:     5: argument_constructors::E([B1.2], [B1.4]) (CXXConstructExpr, class argument_constructors::E)
965 // CXX17-NEXT:     6: ~argument_constructors::D() (Temporary object destructor)
966 // CXX17-NEXT:     7: ~argument_constructors::D() (Temporary object destructor)
967 void passTwoArgumentsIntoAnotherConstructor() {
968   E(D(), D());
969 }
970 } // end namespace argument_constructors
971 
972 namespace copy_elision_with_extra_arguments {
973 class C {
974 public:
975   C();
976   C(const C &c, int x = 0);
977 };
978 
979 // CHECK: void testCopyElisionWhenCopyConstructorHasExtraArguments()
980 // CHECK:        [B1]
981 // CXX11-ELIDE-NEXT:     1: copy_elision_with_extra_arguments::C() (CXXConstructExpr, [B1.3], [B1.5], class copy_elision_with_extra_arguments::C)
982 // CXX11-NOELIDE-NEXT:     1: copy_elision_with_extra_arguments::C() (CXXConstructExpr, [B1.3], class copy_elision_with_extra_arguments::C)
983 // CXX11-NEXT:     2: [B1.1] (ImplicitCastExpr, NoOp, const class copy_elision_with_extra_arguments::C)
984 // CXX11-NEXT:     3: [B1.2]
985 // CXX11-NEXT:     4:
986 // CXX11-NEXT:     5: [B1.3] (CXXConstructExpr, [B1.6], class copy_elision_with_extra_arguments::C)
987 // CXX11-NEXT:     6: copy_elision_with_extra_arguments::C c = copy_elision_with_extra_arguments::C();
988 // CXX17-NEXT:     1: copy_elision_with_extra_arguments::C() (CXXConstructExpr, [B1.2], class copy_elision_with_extra_arguments::C)
989 // CXX17-NEXT:     2: copy_elision_with_extra_arguments::C c = copy_elision_with_extra_arguments::C();
990 void testCopyElisionWhenCopyConstructorHasExtraArguments() {
991   C c = C();
992 }
993 } // namespace copy_elision_with_extra_arguments
994 
995 
996 namespace operators {
997 class C {
998 public:
999   C(int);
1000   C &operator+(C Other);
1001 };
1002 
1003 // FIXME: Find construction context for the this-argument of the operator.
1004 // CHECK: void testOperators()
1005 // CHECK:        [B1]
1006 // CHECK-NEXT:     1: operator+
1007 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, class operators::C &(*)(class o
1008 // CHECK-NEXT:     3: 1
1009 // CHECK-NEXT:     4: [B1.3] (CXXConstructExpr, [B1.6], class operators::C)
1010 // CHECK-NEXT:     5: operators::C([B1.4]) (CXXFunctionalCastExpr, ConstructorConversion, class operato
1011 // CHECK-NEXT:     6: [B1.5]
1012 // CHECK-NEXT:     7: 2
1013 // CXX11-ELIDE-NEXT:     8: [B1.7] (CXXConstructExpr, [B1.10], [B1.11], class operators::C)
1014 // CXX11-NOELIDE-NEXT:     8: [B1.7] (CXXConstructExpr, [B1.10], class operators::C)
1015 // CXX11-NEXT:     9: operators::C([B1.8]) (CXXFunctionalCastExpr, ConstructorConversion, class operato
1016 // CXX11-NEXT:    10: [B1.9]
1017 // CXX11-NEXT:    11: [B1.10] (CXXConstructExpr, [B1.12]+1, class operators::C)
1018 // CXX11-NEXT:    12: [B1.6] + [B1.11] (OperatorCall)
1019 // CXX17-NEXT:     8: [B1.7] (CXXConstructExpr, [B1.10]+1, class operators::C)
1020 // CXX17-NEXT:     9: operators::C([B1.8]) (CXXFunctionalCastExpr, ConstructorConversion, class operato
1021 // CXX17-NEXT:    10: [B1.6] + [B1.9] (OperatorCall)
1022 void testOperators() {
1023   C(1) + C(2);
1024 }
1025 } // namespace operators
1026 
1027 namespace variadic_function_arguments {
1028 class C {
1029  public:
1030   C(int);
1031 };
1032 
1033 int variadic(...);
1034 
1035 // This code is quite exotic, so let's not test the CFG for it,
1036 // but only make sure we don't crash.
1037 void testCrashOnVariadicArgument() {
1038   C c(variadic(0 ? c : 0)); // no-crash
1039 }
1040 } // namespace variadic_function_arguments
1041 
1042 // CHECK: void testTransparentInitListExprs()
1043 // CHECK:        [B1]
1044 // CHECK-NEXT:     1: getC
1045 // CHECK-NEXT:     2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, class transparent_init_list_exprs::C (*)(void))
1046 // CXX11-ELIDE-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.4], [B1.5])
1047 // CXX11-NOELIDE-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.4])
1048 // CXX11-NEXT:     4: [B1.3]
1049 // CXX11-NEXT:     5: {[B1.4]} (CXXConstructExpr, [B1.6], class transparent_init_list_exprs::C)
1050 // CXX11-NEXT:     6: transparent_init_list_exprs::C c{getC()};
1051 // CXX17-NEXT:     3: [B1.2]() (CXXRecordTypedCall, [B1.5])
1052 // CXX17-NEXT:     4: {[B1.3]}
1053 // CXX17-NEXT:     5: transparent_init_list_exprs::C c{getC()};
1054 namespace transparent_init_list_exprs {
1055 class C {};
1056 C getC();
1057 void testTransparentInitListExprs() {
1058   C c{getC()};
1059 }
1060 } // namespace transparent_init_list_exprs
1061