Bug Summary

File:tools/clang/lib/AST/ExprCXX.cpp
Warning:line 1293, column 31
Access to field 'HasTemplateKWAndArgsInfo' results in a dereference of a null pointer (loaded from variable 'E')

Annotated Source Code

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clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name ExprCXX.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -mrelocation-model pic -pic-level 2 -mthread-model posix -relaxed-aliasing -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -momit-leaf-frame-pointer -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-8/lib/clang/8.0.0 -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-8~svn345461/build-llvm/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-8~svn345461/tools/clang/include -I /build/llvm-toolchain-snapshot-8~svn345461/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-8~svn345461/build-llvm/include -I /build/llvm-toolchain-snapshot-8~svn345461/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/include/clang/8.0.0/include/ -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-8/lib/clang/8.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-8~svn345461/build-llvm/tools/clang/lib/AST -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2018-10-27-211344-32123-1 -x c++ /build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp -faddrsig
1//===- ExprCXX.cpp - (C++) Expression AST Node Implementation -------------===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file implements the subclesses of Expr class declared in ExprCXX.h
11//
12//===----------------------------------------------------------------------===//
13
14#include "clang/AST/ExprCXX.h"
15#include "clang/AST/ASTContext.h"
16#include "clang/AST/Attr.h"
17#include "clang/AST/Decl.h"
18#include "clang/AST/DeclAccessPair.h"
19#include "clang/AST/DeclBase.h"
20#include "clang/AST/DeclCXX.h"
21#include "clang/AST/DeclarationName.h"
22#include "clang/AST/Expr.h"
23#include "clang/AST/LambdaCapture.h"
24#include "clang/AST/NestedNameSpecifier.h"
25#include "clang/AST/TemplateBase.h"
26#include "clang/AST/Type.h"
27#include "clang/AST/TypeLoc.h"
28#include "clang/Basic/LLVM.h"
29#include "clang/Basic/OperatorKinds.h"
30#include "clang/Basic/SourceLocation.h"
31#include "clang/Basic/Specifiers.h"
32#include "llvm/ADT/ArrayRef.h"
33#include "llvm/Support/Casting.h"
34#include "llvm/Support/ErrorHandling.h"
35#include <cassert>
36#include <cstddef>
37#include <cstring>
38#include <memory>
39
40using namespace clang;
41
42//===----------------------------------------------------------------------===//
43// Child Iterators for iterating over subexpressions/substatements
44//===----------------------------------------------------------------------===//
45
46bool CXXOperatorCallExpr::isInfixBinaryOp() const {
47 // An infix binary operator is any operator with two arguments other than
48 // operator() and operator[]. Note that none of these operators can have
49 // default arguments, so it suffices to check the number of argument
50 // expressions.
51 if (getNumArgs() != 2)
52 return false;
53
54 switch (getOperator()) {
55 case OO_Call: case OO_Subscript:
56 return false;
57 default:
58 return true;
59 }
60}
61
62bool CXXTypeidExpr::isPotentiallyEvaluated() const {
63 if (isTypeOperand())
64 return false;
65
66 // C++11 [expr.typeid]p3:
67 // When typeid is applied to an expression other than a glvalue of
68 // polymorphic class type, [...] the expression is an unevaluated operand.
69 const Expr *E = getExprOperand();
70 if (const CXXRecordDecl *RD = E->getType()->getAsCXXRecordDecl())
71 if (RD->isPolymorphic() && E->isGLValue())
72 return true;
73
74 return false;
75}
76
77QualType CXXTypeidExpr::getTypeOperand(ASTContext &Context) const {
78 assert(isTypeOperand() && "Cannot call getTypeOperand for typeid(expr)")((isTypeOperand() && "Cannot call getTypeOperand for typeid(expr)"
) ? static_cast<void> (0) : __assert_fail ("isTypeOperand() && \"Cannot call getTypeOperand for typeid(expr)\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 78, __PRETTY_FUNCTION__))
;
79 Qualifiers Quals;
80 return Context.getUnqualifiedArrayType(
81 Operand.get<TypeSourceInfo *>()->getType().getNonReferenceType(), Quals);
82}
83
84QualType CXXUuidofExpr::getTypeOperand(ASTContext &Context) const {
85 assert(isTypeOperand() && "Cannot call getTypeOperand for __uuidof(expr)")((isTypeOperand() && "Cannot call getTypeOperand for __uuidof(expr)"
) ? static_cast<void> (0) : __assert_fail ("isTypeOperand() && \"Cannot call getTypeOperand for __uuidof(expr)\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 85, __PRETTY_FUNCTION__))
;
86 Qualifiers Quals;
87 return Context.getUnqualifiedArrayType(
88 Operand.get<TypeSourceInfo *>()->getType().getNonReferenceType(), Quals);
89}
90
91// CXXScalarValueInitExpr
92SourceLocation CXXScalarValueInitExpr::getBeginLoc() const {
93 return TypeInfo ? TypeInfo->getTypeLoc().getBeginLoc() : RParenLoc;
94}
95
96// CXXNewExpr
97CXXNewExpr::CXXNewExpr(const ASTContext &C, bool globalNew,
98 FunctionDecl *operatorNew, FunctionDecl *operatorDelete,
99 bool PassAlignment, bool usualArrayDeleteWantsSize,
100 ArrayRef<Expr*> placementArgs,
101 SourceRange typeIdParens, Expr *arraySize,
102 InitializationStyle initializationStyle,
103 Expr *initializer, QualType ty,
104 TypeSourceInfo *allocatedTypeInfo,
105 SourceRange Range, SourceRange directInitRange)
106 : Expr(CXXNewExprClass, ty, VK_RValue, OK_Ordinary, ty->isDependentType(),
107 ty->isDependentType(), ty->isInstantiationDependentType(),
108 ty->containsUnexpandedParameterPack()),
109 OperatorNew(operatorNew), OperatorDelete(operatorDelete),
110 AllocatedTypeInfo(allocatedTypeInfo), TypeIdParens(typeIdParens),
111 Range(Range), DirectInitRange(directInitRange), GlobalNew(globalNew),
112 PassAlignment(PassAlignment),
113 UsualArrayDeleteWantsSize(usualArrayDeleteWantsSize) {
114 assert((initializer != nullptr || initializationStyle == NoInit) &&(((initializer != nullptr || initializationStyle == NoInit) &&
"Only NoInit can have no initializer.") ? static_cast<void
> (0) : __assert_fail ("(initializer != nullptr || initializationStyle == NoInit) && \"Only NoInit can have no initializer.\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 115, __PRETTY_FUNCTION__))
115 "Only NoInit can have no initializer.")(((initializer != nullptr || initializationStyle == NoInit) &&
"Only NoInit can have no initializer.") ? static_cast<void
> (0) : __assert_fail ("(initializer != nullptr || initializationStyle == NoInit) && \"Only NoInit can have no initializer.\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 115, __PRETTY_FUNCTION__))
;
116 StoredInitializationStyle = initializer ? initializationStyle + 1 : 0;
117 AllocateArgsArray(C, arraySize != nullptr, placementArgs.size(),
118 initializer != nullptr);
119 unsigned i = 0;
120 if (Array) {
121 if (arraySize->isInstantiationDependent())
122 ExprBits.InstantiationDependent = true;
123
124 if (arraySize->containsUnexpandedParameterPack())
125 ExprBits.ContainsUnexpandedParameterPack = true;
126
127 SubExprs[i++] = arraySize;
128 }
129
130 if (initializer) {
131 if (initializer->isInstantiationDependent())
132 ExprBits.InstantiationDependent = true;
133
134 if (initializer->containsUnexpandedParameterPack())
135 ExprBits.ContainsUnexpandedParameterPack = true;
136
137 SubExprs[i++] = initializer;
138 }
139
140 for (unsigned j = 0; j != placementArgs.size(); ++j) {
141 if (placementArgs[j]->isInstantiationDependent())
142 ExprBits.InstantiationDependent = true;
143 if (placementArgs[j]->containsUnexpandedParameterPack())
144 ExprBits.ContainsUnexpandedParameterPack = true;
145
146 SubExprs[i++] = placementArgs[j];
147 }
148
149 switch (getInitializationStyle()) {
150 case CallInit:
151 this->Range.setEnd(DirectInitRange.getEnd()); break;
152 case ListInit:
153 this->Range.setEnd(getInitializer()->getSourceRange().getEnd()); break;
154 default:
155 if (TypeIdParens.isValid())
156 this->Range.setEnd(TypeIdParens.getEnd());
157 break;
158 }
159}
160
161void CXXNewExpr::AllocateArgsArray(const ASTContext &C, bool isArray,
162 unsigned numPlaceArgs, bool hasInitializer){
163 assert(SubExprs == nullptr && "SubExprs already allocated")((SubExprs == nullptr && "SubExprs already allocated"
) ? static_cast<void> (0) : __assert_fail ("SubExprs == nullptr && \"SubExprs already allocated\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 163, __PRETTY_FUNCTION__))
;
164 Array = isArray;
165 NumPlacementArgs = numPlaceArgs;
166
167 unsigned TotalSize = Array + hasInitializer + NumPlacementArgs;
168 SubExprs = new (C) Stmt*[TotalSize];
169}
170
171bool CXXNewExpr::shouldNullCheckAllocation(const ASTContext &Ctx) const {
172 return getOperatorNew()->getType()->castAs<FunctionProtoType>()
173 ->isNothrow() &&
174 !getOperatorNew()->isReservedGlobalPlacementOperator();
175}
176
177// CXXDeleteExpr
178QualType CXXDeleteExpr::getDestroyedType() const {
179 const Expr *Arg = getArgument();
180
181 // For a destroying operator delete, we may have implicitly converted the
182 // pointer type to the type of the parameter of the 'operator delete'
183 // function.
184 while (const auto *ICE = dyn_cast<ImplicitCastExpr>(Arg)) {
185 if (ICE->getCastKind() == CK_DerivedToBase ||
186 ICE->getCastKind() == CK_UncheckedDerivedToBase ||
187 ICE->getCastKind() == CK_NoOp) {
188 assert((ICE->getCastKind() == CK_NoOp ||(((ICE->getCastKind() == CK_NoOp || getOperatorDelete()->
isDestroyingOperatorDelete()) && "only a destroying operator delete can have a converted arg"
) ? static_cast<void> (0) : __assert_fail ("(ICE->getCastKind() == CK_NoOp || getOperatorDelete()->isDestroyingOperatorDelete()) && \"only a destroying operator delete can have a converted arg\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 190, __PRETTY_FUNCTION__))
189 getOperatorDelete()->isDestroyingOperatorDelete()) &&(((ICE->getCastKind() == CK_NoOp || getOperatorDelete()->
isDestroyingOperatorDelete()) && "only a destroying operator delete can have a converted arg"
) ? static_cast<void> (0) : __assert_fail ("(ICE->getCastKind() == CK_NoOp || getOperatorDelete()->isDestroyingOperatorDelete()) && \"only a destroying operator delete can have a converted arg\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 190, __PRETTY_FUNCTION__))
190 "only a destroying operator delete can have a converted arg")(((ICE->getCastKind() == CK_NoOp || getOperatorDelete()->
isDestroyingOperatorDelete()) && "only a destroying operator delete can have a converted arg"
) ? static_cast<void> (0) : __assert_fail ("(ICE->getCastKind() == CK_NoOp || getOperatorDelete()->isDestroyingOperatorDelete()) && \"only a destroying operator delete can have a converted arg\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 190, __PRETTY_FUNCTION__))
;
191 Arg = ICE->getSubExpr();
192 } else
193 break;
194 }
195
196 // The type-to-delete may not be a pointer if it's a dependent type.
197 const QualType ArgType = Arg->getType();
198
199 if (ArgType->isDependentType() && !ArgType->isPointerType())
200 return QualType();
201
202 return ArgType->getAs<PointerType>()->getPointeeType();
203}
204
205// CXXPseudoDestructorExpr
206PseudoDestructorTypeStorage::PseudoDestructorTypeStorage(TypeSourceInfo *Info)
207 : Type(Info) {
208 Location = Info->getTypeLoc().getLocalSourceRange().getBegin();
209}
210
211CXXPseudoDestructorExpr::CXXPseudoDestructorExpr(const ASTContext &Context,
212 Expr *Base, bool isArrow, SourceLocation OperatorLoc,
213 NestedNameSpecifierLoc QualifierLoc, TypeSourceInfo *ScopeType,
214 SourceLocation ColonColonLoc, SourceLocation TildeLoc,
215 PseudoDestructorTypeStorage DestroyedType)
216 : Expr(CXXPseudoDestructorExprClass,
217 Context.BoundMemberTy,
218 VK_RValue, OK_Ordinary,
219 /*isTypeDependent=*/(Base->isTypeDependent() ||
220 (DestroyedType.getTypeSourceInfo() &&
221 DestroyedType.getTypeSourceInfo()->getType()->isDependentType())),
222 /*isValueDependent=*/Base->isValueDependent(),
223 (Base->isInstantiationDependent() ||
224 (QualifierLoc &&
225 QualifierLoc.getNestedNameSpecifier()->isInstantiationDependent()) ||
226 (ScopeType &&
227 ScopeType->getType()->isInstantiationDependentType()) ||
228 (DestroyedType.getTypeSourceInfo() &&
229 DestroyedType.getTypeSourceInfo()->getType()
230 ->isInstantiationDependentType())),
231 // ContainsUnexpandedParameterPack
232 (Base->containsUnexpandedParameterPack() ||
233 (QualifierLoc &&
234 QualifierLoc.getNestedNameSpecifier()
235 ->containsUnexpandedParameterPack()) ||
236 (ScopeType &&
237 ScopeType->getType()->containsUnexpandedParameterPack()) ||
238 (DestroyedType.getTypeSourceInfo() &&
239 DestroyedType.getTypeSourceInfo()->getType()
240 ->containsUnexpandedParameterPack()))),
241 Base(static_cast<Stmt *>(Base)), IsArrow(isArrow),
242 OperatorLoc(OperatorLoc), QualifierLoc(QualifierLoc),
243 ScopeType(ScopeType), ColonColonLoc(ColonColonLoc), TildeLoc(TildeLoc),
244 DestroyedType(DestroyedType) {}
245
246QualType CXXPseudoDestructorExpr::getDestroyedType() const {
247 if (TypeSourceInfo *TInfo = DestroyedType.getTypeSourceInfo())
248 return TInfo->getType();
249
250 return QualType();
251}
252
253SourceLocation CXXPseudoDestructorExpr::getEndLoc() const {
254 SourceLocation End = DestroyedType.getLocation();
255 if (TypeSourceInfo *TInfo = DestroyedType.getTypeSourceInfo())
256 End = TInfo->getTypeLoc().getLocalSourceRange().getEnd();
257 return End;
258}
259
260// UnresolvedLookupExpr
261UnresolvedLookupExpr *
262UnresolvedLookupExpr::Create(const ASTContext &C,
263 CXXRecordDecl *NamingClass,
264 NestedNameSpecifierLoc QualifierLoc,
265 SourceLocation TemplateKWLoc,
266 const DeclarationNameInfo &NameInfo,
267 bool ADL,
268 const TemplateArgumentListInfo *Args,
269 UnresolvedSetIterator Begin,
270 UnresolvedSetIterator End) {
271 assert(Args || TemplateKWLoc.isValid())((Args || TemplateKWLoc.isValid()) ? static_cast<void> (
0) : __assert_fail ("Args || TemplateKWLoc.isValid()", "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 271, __PRETTY_FUNCTION__))
;
272 unsigned num_args = Args ? Args->size() : 0;
273
274 std::size_t Size =
275 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(1,
276 num_args);
277 void *Mem = C.Allocate(Size, alignof(UnresolvedLookupExpr));
278 return new (Mem) UnresolvedLookupExpr(C, NamingClass, QualifierLoc,
279 TemplateKWLoc, NameInfo,
280 ADL, /*Overload*/ true, Args,
281 Begin, End);
282}
283
284UnresolvedLookupExpr *
285UnresolvedLookupExpr::CreateEmpty(const ASTContext &C,
286 bool HasTemplateKWAndArgsInfo,
287 unsigned NumTemplateArgs) {
288 assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo)((NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo) ? static_cast
<void> (0) : __assert_fail ("NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo"
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 288, __PRETTY_FUNCTION__))
;
289 std::size_t Size =
290 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
291 HasTemplateKWAndArgsInfo, NumTemplateArgs);
292 void *Mem = C.Allocate(Size, alignof(UnresolvedLookupExpr));
293 auto *E = new (Mem) UnresolvedLookupExpr(EmptyShell());
294 E->HasTemplateKWAndArgsInfo = HasTemplateKWAndArgsInfo;
295 return E;
296}
297
298OverloadExpr::OverloadExpr(StmtClass K, const ASTContext &C,
299 NestedNameSpecifierLoc QualifierLoc,
300 SourceLocation TemplateKWLoc,
301 const DeclarationNameInfo &NameInfo,
302 const TemplateArgumentListInfo *TemplateArgs,
303 UnresolvedSetIterator Begin,
304 UnresolvedSetIterator End,
305 bool KnownDependent,
306 bool KnownInstantiationDependent,
307 bool KnownContainsUnexpandedParameterPack)
308 : Expr(K, C.OverloadTy, VK_LValue, OK_Ordinary, KnownDependent,
309 KnownDependent,
310 (KnownInstantiationDependent ||
311 NameInfo.isInstantiationDependent() ||
312 (QualifierLoc &&
313 QualifierLoc.getNestedNameSpecifier()->isInstantiationDependent())),
314 (KnownContainsUnexpandedParameterPack ||
315 NameInfo.containsUnexpandedParameterPack() ||
316 (QualifierLoc &&
317 QualifierLoc.getNestedNameSpecifier()
318 ->containsUnexpandedParameterPack()))),
319 NameInfo(NameInfo), QualifierLoc(QualifierLoc), NumResults(End - Begin),
320 HasTemplateKWAndArgsInfo(TemplateArgs != nullptr ||
321 TemplateKWLoc.isValid()) {
322 NumResults = End - Begin;
323 if (NumResults) {
324 // Determine whether this expression is type-dependent.
325 for (UnresolvedSetImpl::const_iterator I = Begin; I != End; ++I) {
326 if ((*I)->getDeclContext()->isDependentContext() ||
327 isa<UnresolvedUsingValueDecl>(*I)) {
328 ExprBits.TypeDependent = true;
329 ExprBits.ValueDependent = true;
330 ExprBits.InstantiationDependent = true;
331 }
332 }
333
334 Results = static_cast<DeclAccessPair *>(C.Allocate(
335 sizeof(DeclAccessPair) * NumResults, alignof(DeclAccessPair)));
336 memcpy(Results, Begin.I, NumResults * sizeof(DeclAccessPair));
337 }
338
339 // If we have explicit template arguments, check for dependent
340 // template arguments and whether they contain any unexpanded pack
341 // expansions.
342 if (TemplateArgs) {
343 bool Dependent = false;
344 bool InstantiationDependent = false;
345 bool ContainsUnexpandedParameterPack = false;
346 getTrailingASTTemplateKWAndArgsInfo()->initializeFrom(
347 TemplateKWLoc, *TemplateArgs, getTrailingTemplateArgumentLoc(),
348 Dependent, InstantiationDependent, ContainsUnexpandedParameterPack);
349
350 if (Dependent) {
351 ExprBits.TypeDependent = true;
352 ExprBits.ValueDependent = true;
353 }
354 if (InstantiationDependent)
355 ExprBits.InstantiationDependent = true;
356 if (ContainsUnexpandedParameterPack)
357 ExprBits.ContainsUnexpandedParameterPack = true;
358 } else if (TemplateKWLoc.isValid()) {
359 getTrailingASTTemplateKWAndArgsInfo()->initializeFrom(TemplateKWLoc);
360 }
361
362 if (isTypeDependent())
363 setType(C.DependentTy);
364}
365
366void OverloadExpr::initializeResults(const ASTContext &C,
367 UnresolvedSetIterator Begin,
368 UnresolvedSetIterator End) {
369 assert(!Results && "Results already initialized!")((!Results && "Results already initialized!") ? static_cast
<void> (0) : __assert_fail ("!Results && \"Results already initialized!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 369, __PRETTY_FUNCTION__))
;
370 NumResults = End - Begin;
371 if (NumResults) {
372 Results = static_cast<DeclAccessPair *>(
373 C.Allocate(sizeof(DeclAccessPair) * NumResults,
374
375 alignof(DeclAccessPair)));
376 memcpy(Results, Begin.I, NumResults * sizeof(DeclAccessPair));
377 }
378}
379
380CXXRecordDecl *OverloadExpr::getNamingClass() const {
381 if (isa<UnresolvedLookupExpr>(this))
382 return cast<UnresolvedLookupExpr>(this)->getNamingClass();
383 else
384 return cast<UnresolvedMemberExpr>(this)->getNamingClass();
385}
386
387// DependentScopeDeclRefExpr
388DependentScopeDeclRefExpr::DependentScopeDeclRefExpr(QualType T,
389 NestedNameSpecifierLoc QualifierLoc,
390 SourceLocation TemplateKWLoc,
391 const DeclarationNameInfo &NameInfo,
392 const TemplateArgumentListInfo *Args)
393 : Expr(DependentScopeDeclRefExprClass, T, VK_LValue, OK_Ordinary,
394 true, true,
395 (NameInfo.isInstantiationDependent() ||
396 (QualifierLoc &&
397 QualifierLoc.getNestedNameSpecifier()->isInstantiationDependent())),
398 (NameInfo.containsUnexpandedParameterPack() ||
399 (QualifierLoc &&
400 QualifierLoc.getNestedNameSpecifier()
401 ->containsUnexpandedParameterPack()))),
402 QualifierLoc(QualifierLoc), NameInfo(NameInfo),
403 HasTemplateKWAndArgsInfo(Args != nullptr || TemplateKWLoc.isValid())
404{
405 if (Args) {
406 bool Dependent = true;
407 bool InstantiationDependent = true;
408 bool ContainsUnexpandedParameterPack
409 = ExprBits.ContainsUnexpandedParameterPack;
410 getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
411 TemplateKWLoc, *Args, getTrailingObjects<TemplateArgumentLoc>(),
412 Dependent, InstantiationDependent, ContainsUnexpandedParameterPack);
413 ExprBits.ContainsUnexpandedParameterPack = ContainsUnexpandedParameterPack;
414 } else if (TemplateKWLoc.isValid()) {
415 getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
416 TemplateKWLoc);
417 }
418}
419
420DependentScopeDeclRefExpr *
421DependentScopeDeclRefExpr::Create(const ASTContext &C,
422 NestedNameSpecifierLoc QualifierLoc,
423 SourceLocation TemplateKWLoc,
424 const DeclarationNameInfo &NameInfo,
425 const TemplateArgumentListInfo *Args) {
426 assert(QualifierLoc && "should be created for dependent qualifiers")((QualifierLoc && "should be created for dependent qualifiers"
) ? static_cast<void> (0) : __assert_fail ("QualifierLoc && \"should be created for dependent qualifiers\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 426, __PRETTY_FUNCTION__))
;
427 bool HasTemplateKWAndArgsInfo = Args || TemplateKWLoc.isValid();
428 std::size_t Size =
429 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
430 HasTemplateKWAndArgsInfo, Args ? Args->size() : 0);
431 void *Mem = C.Allocate(Size);
432 return new (Mem) DependentScopeDeclRefExpr(C.DependentTy, QualifierLoc,
433 TemplateKWLoc, NameInfo, Args);
434}
435
436DependentScopeDeclRefExpr *
437DependentScopeDeclRefExpr::CreateEmpty(const ASTContext &C,
438 bool HasTemplateKWAndArgsInfo,
439 unsigned NumTemplateArgs) {
440 assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo)((NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo) ? static_cast
<void> (0) : __assert_fail ("NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo"
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 440, __PRETTY_FUNCTION__))
;
441 std::size_t Size =
442 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
443 HasTemplateKWAndArgsInfo, NumTemplateArgs);
444 void *Mem = C.Allocate(Size);
445 auto *E =
446 new (Mem) DependentScopeDeclRefExpr(QualType(), NestedNameSpecifierLoc(),
447 SourceLocation(),
448 DeclarationNameInfo(), nullptr);
449 E->HasTemplateKWAndArgsInfo = HasTemplateKWAndArgsInfo;
450 return E;
451}
452
453SourceLocation CXXConstructExpr::getBeginLoc() const {
454 if (isa<CXXTemporaryObjectExpr>(this))
455 return cast<CXXTemporaryObjectExpr>(this)->getBeginLoc();
456 return Loc;
457}
458
459SourceLocation CXXConstructExpr::getEndLoc() const {
460 if (isa<CXXTemporaryObjectExpr>(this))
461 return cast<CXXTemporaryObjectExpr>(this)->getEndLoc();
462
463 if (ParenOrBraceRange.isValid())
464 return ParenOrBraceRange.getEnd();
465
466 SourceLocation End = Loc;
467 for (unsigned I = getNumArgs(); I > 0; --I) {
468 const Expr *Arg = getArg(I-1);
469 if (!Arg->isDefaultArgument()) {
470 SourceLocation NewEnd = Arg->getEndLoc();
471 if (NewEnd.isValid()) {
472 End = NewEnd;
473 break;
474 }
475 }
476 }
477
478 return End;
479}
480
481SourceRange CXXOperatorCallExpr::getSourceRangeImpl() const {
482 OverloadedOperatorKind Kind = getOperator();
483 if (Kind == OO_PlusPlus || Kind == OO_MinusMinus) {
484 if (getNumArgs() == 1)
485 // Prefix operator
486 return SourceRange(getOperatorLoc(), getArg(0)->getEndLoc());
487 else
488 // Postfix operator
489 return SourceRange(getArg(0)->getBeginLoc(), getOperatorLoc());
490 } else if (Kind == OO_Arrow) {
491 return getArg(0)->getSourceRange();
492 } else if (Kind == OO_Call) {
493 return SourceRange(getArg(0)->getBeginLoc(), getRParenLoc());
494 } else if (Kind == OO_Subscript) {
495 return SourceRange(getArg(0)->getBeginLoc(), getRParenLoc());
496 } else if (getNumArgs() == 1) {
497 return SourceRange(getOperatorLoc(), getArg(0)->getEndLoc());
498 } else if (getNumArgs() == 2) {
499 return SourceRange(getArg(0)->getBeginLoc(), getArg(1)->getEndLoc());
500 } else {
501 return getOperatorLoc();
502 }
503}
504
505Expr *CXXMemberCallExpr::getImplicitObjectArgument() const {
506 const Expr *Callee = getCallee()->IgnoreParens();
507 if (const auto *MemExpr = dyn_cast<MemberExpr>(Callee))
508 return MemExpr->getBase();
509 if (const auto *BO = dyn_cast<BinaryOperator>(Callee))
510 if (BO->getOpcode() == BO_PtrMemD || BO->getOpcode() == BO_PtrMemI)
511 return BO->getLHS();
512
513 // FIXME: Will eventually need to cope with member pointers.
514 return nullptr;
515}
516
517CXXMethodDecl *CXXMemberCallExpr::getMethodDecl() const {
518 if (const auto *MemExpr = dyn_cast<MemberExpr>(getCallee()->IgnoreParens()))
519 return cast<CXXMethodDecl>(MemExpr->getMemberDecl());
520
521 // FIXME: Will eventually need to cope with member pointers.
522 return nullptr;
523}
524
525CXXRecordDecl *CXXMemberCallExpr::getRecordDecl() const {
526 Expr* ThisArg = getImplicitObjectArgument();
527 if (!ThisArg)
528 return nullptr;
529
530 if (ThisArg->getType()->isAnyPointerType())
531 return ThisArg->getType()->getPointeeType()->getAsCXXRecordDecl();
532
533 return ThisArg->getType()->getAsCXXRecordDecl();
534}
535
536//===----------------------------------------------------------------------===//
537// Named casts
538//===----------------------------------------------------------------------===//
539
540/// getCastName - Get the name of the C++ cast being used, e.g.,
541/// "static_cast", "dynamic_cast", "reinterpret_cast", or
542/// "const_cast". The returned pointer must not be freed.
543const char *CXXNamedCastExpr::getCastName() const {
544 switch (getStmtClass()) {
545 case CXXStaticCastExprClass: return "static_cast";
546 case CXXDynamicCastExprClass: return "dynamic_cast";
547 case CXXReinterpretCastExprClass: return "reinterpret_cast";
548 case CXXConstCastExprClass: return "const_cast";
549 default: return "<invalid cast>";
550 }
551}
552
553CXXStaticCastExpr *CXXStaticCastExpr::Create(const ASTContext &C, QualType T,
554 ExprValueKind VK,
555 CastKind K, Expr *Op,
556 const CXXCastPath *BasePath,
557 TypeSourceInfo *WrittenTy,
558 SourceLocation L,
559 SourceLocation RParenLoc,
560 SourceRange AngleBrackets) {
561 unsigned PathSize = (BasePath ? BasePath->size() : 0);
562 void *Buffer =
563 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
564 PathSize ? 1 : 0, PathSize));
565 auto *E =
566 new (Buffer) CXXStaticCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
567 RParenLoc, AngleBrackets);
568 if (PathSize)
569 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
570 E->getTrailingObjects<CXXBaseSpecifier *>());
571 return E;
572}
573
574CXXStaticCastExpr *CXXStaticCastExpr::CreateEmpty(const ASTContext &C,
575 unsigned PathSize) {
576 void *Buffer =
577 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
578 PathSize ? 1 : 0, PathSize));
579 return new (Buffer) CXXStaticCastExpr(EmptyShell(), PathSize);
580}
581
582CXXDynamicCastExpr *CXXDynamicCastExpr::Create(const ASTContext &C, QualType T,
583 ExprValueKind VK,
584 CastKind K, Expr *Op,
585 const CXXCastPath *BasePath,
586 TypeSourceInfo *WrittenTy,
587 SourceLocation L,
588 SourceLocation RParenLoc,
589 SourceRange AngleBrackets) {
590 unsigned PathSize = (BasePath ? BasePath->size() : 0);
591 void *Buffer =
592 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
593 PathSize ? 1 : 0, PathSize));
594 auto *E =
595 new (Buffer) CXXDynamicCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
596 RParenLoc, AngleBrackets);
597 if (PathSize)
598 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
599 E->getTrailingObjects<CXXBaseSpecifier *>());
600 return E;
601}
602
603CXXDynamicCastExpr *CXXDynamicCastExpr::CreateEmpty(const ASTContext &C,
604 unsigned PathSize) {
605 void *Buffer =
606 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
607 PathSize ? 1 : 0, PathSize));
608 return new (Buffer) CXXDynamicCastExpr(EmptyShell(), PathSize);
609}
610
611/// isAlwaysNull - Return whether the result of the dynamic_cast is proven
612/// to always be null. For example:
613///
614/// struct A { };
615/// struct B final : A { };
616/// struct C { };
617///
618/// C *f(B* b) { return dynamic_cast<C*>(b); }
619bool CXXDynamicCastExpr::isAlwaysNull() const
620{
621 QualType SrcType = getSubExpr()->getType();
622 QualType DestType = getType();
623
624 if (const auto *SrcPTy = SrcType->getAs<PointerType>()) {
625 SrcType = SrcPTy->getPointeeType();
626 DestType = DestType->castAs<PointerType>()->getPointeeType();
627 }
628
629 if (DestType->isVoidType())
630 return false;
631
632 const auto *SrcRD =
633 cast<CXXRecordDecl>(SrcType->castAs<RecordType>()->getDecl());
634
635 if (!SrcRD->hasAttr<FinalAttr>())
636 return false;
637
638 const auto *DestRD =
639 cast<CXXRecordDecl>(DestType->castAs<RecordType>()->getDecl());
640
641 return !DestRD->isDerivedFrom(SrcRD);
642}
643
644CXXReinterpretCastExpr *
645CXXReinterpretCastExpr::Create(const ASTContext &C, QualType T,
646 ExprValueKind VK, CastKind K, Expr *Op,
647 const CXXCastPath *BasePath,
648 TypeSourceInfo *WrittenTy, SourceLocation L,
649 SourceLocation RParenLoc,
650 SourceRange AngleBrackets) {
651 unsigned PathSize = (BasePath ? BasePath->size() : 0);
652 void *Buffer =
653 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
654 PathSize ? 1 : 0, PathSize));
655 auto *E =
656 new (Buffer) CXXReinterpretCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
657 RParenLoc, AngleBrackets);
658 if (PathSize)
659 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
660 E->getTrailingObjects<CXXBaseSpecifier *>());
661 return E;
662}
663
664CXXReinterpretCastExpr *
665CXXReinterpretCastExpr::CreateEmpty(const ASTContext &C, unsigned PathSize) {
666 void *Buffer =
667 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
668 PathSize ? 1 : 0, PathSize));
669 return new (Buffer) CXXReinterpretCastExpr(EmptyShell(), PathSize);
670}
671
672CXXConstCastExpr *CXXConstCastExpr::Create(const ASTContext &C, QualType T,
673 ExprValueKind VK, Expr *Op,
674 TypeSourceInfo *WrittenTy,
675 SourceLocation L,
676 SourceLocation RParenLoc,
677 SourceRange AngleBrackets) {
678 return new (C) CXXConstCastExpr(T, VK, Op, WrittenTy, L, RParenLoc, AngleBrackets);
679}
680
681CXXConstCastExpr *CXXConstCastExpr::CreateEmpty(const ASTContext &C) {
682 return new (C) CXXConstCastExpr(EmptyShell());
683}
684
685CXXFunctionalCastExpr *
686CXXFunctionalCastExpr::Create(const ASTContext &C, QualType T, ExprValueKind VK,
687 TypeSourceInfo *Written, CastKind K, Expr *Op,
688 const CXXCastPath *BasePath,
689 SourceLocation L, SourceLocation R) {
690 unsigned PathSize = (BasePath ? BasePath->size() : 0);
691 void *Buffer =
692 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
693 PathSize ? 1 : 0, PathSize));
694 auto *E =
695 new (Buffer) CXXFunctionalCastExpr(T, VK, Written, K, Op, PathSize, L, R);
696 if (PathSize)
697 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
698 E->getTrailingObjects<CXXBaseSpecifier *>());
699 return E;
700}
701
702CXXFunctionalCastExpr *
703CXXFunctionalCastExpr::CreateEmpty(const ASTContext &C, unsigned PathSize) {
704 void *Buffer =
705 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
706 PathSize ? 1 : 0, PathSize));
707 return new (Buffer) CXXFunctionalCastExpr(EmptyShell(), PathSize);
708}
709
710SourceLocation CXXFunctionalCastExpr::getBeginLoc() const {
711 return getTypeInfoAsWritten()->getTypeLoc().getBeginLoc();
712}
713
714SourceLocation CXXFunctionalCastExpr::getEndLoc() const {
715 return RParenLoc.isValid() ? RParenLoc : getSubExpr()->getEndLoc();
716}
717
718UserDefinedLiteral::LiteralOperatorKind
719UserDefinedLiteral::getLiteralOperatorKind() const {
720 if (getNumArgs() == 0)
721 return LOK_Template;
722 if (getNumArgs() == 2)
723 return LOK_String;
724
725 assert(getNumArgs() == 1 && "unexpected #args in literal operator call")((getNumArgs() == 1 && "unexpected #args in literal operator call"
) ? static_cast<void> (0) : __assert_fail ("getNumArgs() == 1 && \"unexpected #args in literal operator call\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 725, __PRETTY_FUNCTION__))
;
726 QualType ParamTy =
727 cast<FunctionDecl>(getCalleeDecl())->getParamDecl(0)->getType();
728 if (ParamTy->isPointerType())
729 return LOK_Raw;
730 if (ParamTy->isAnyCharacterType())
731 return LOK_Character;
732 if (ParamTy->isIntegerType())
733 return LOK_Integer;
734 if (ParamTy->isFloatingType())
735 return LOK_Floating;
736
737 llvm_unreachable("unknown kind of literal operator")::llvm::llvm_unreachable_internal("unknown kind of literal operator"
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 737)
;
738}
739
740Expr *UserDefinedLiteral::getCookedLiteral() {
741#ifndef NDEBUG
742 LiteralOperatorKind LOK = getLiteralOperatorKind();
743 assert(LOK != LOK_Template && LOK != LOK_Raw && "not a cooked literal")((LOK != LOK_Template && LOK != LOK_Raw && "not a cooked literal"
) ? static_cast<void> (0) : __assert_fail ("LOK != LOK_Template && LOK != LOK_Raw && \"not a cooked literal\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 743, __PRETTY_FUNCTION__))
;
744#endif
745 return getArg(0);
746}
747
748const IdentifierInfo *UserDefinedLiteral::getUDSuffix() const {
749 return cast<FunctionDecl>(getCalleeDecl())->getLiteralIdentifier();
750}
751
752CXXDefaultInitExpr::CXXDefaultInitExpr(const ASTContext &C, SourceLocation Loc,
753 FieldDecl *Field, QualType T)
754 : Expr(CXXDefaultInitExprClass, T.getNonLValueExprType(C),
755 T->isLValueReferenceType() ? VK_LValue : T->isRValueReferenceType()
756 ? VK_XValue
757 : VK_RValue,
758 /*FIXME*/ OK_Ordinary, false, false, false, false),
759 Field(Field), Loc(Loc) {
760 assert(Field->hasInClassInitializer())((Field->hasInClassInitializer()) ? static_cast<void>
(0) : __assert_fail ("Field->hasInClassInitializer()", "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 760, __PRETTY_FUNCTION__))
;
761}
762
763CXXTemporary *CXXTemporary::Create(const ASTContext &C,
764 const CXXDestructorDecl *Destructor) {
765 return new (C) CXXTemporary(Destructor);
766}
767
768CXXBindTemporaryExpr *CXXBindTemporaryExpr::Create(const ASTContext &C,
769 CXXTemporary *Temp,
770 Expr* SubExpr) {
771 assert((SubExpr->getType()->isRecordType() ||(((SubExpr->getType()->isRecordType() || SubExpr->getType
()->isArrayType()) && "Expression bound to a temporary must have record or array type!"
) ? static_cast<void> (0) : __assert_fail ("(SubExpr->getType()->isRecordType() || SubExpr->getType()->isArrayType()) && \"Expression bound to a temporary must have record or array type!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 773, __PRETTY_FUNCTION__))
772 SubExpr->getType()->isArrayType()) &&(((SubExpr->getType()->isRecordType() || SubExpr->getType
()->isArrayType()) && "Expression bound to a temporary must have record or array type!"
) ? static_cast<void> (0) : __assert_fail ("(SubExpr->getType()->isRecordType() || SubExpr->getType()->isArrayType()) && \"Expression bound to a temporary must have record or array type!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 773, __PRETTY_FUNCTION__))
773 "Expression bound to a temporary must have record or array type!")(((SubExpr->getType()->isRecordType() || SubExpr->getType
()->isArrayType()) && "Expression bound to a temporary must have record or array type!"
) ? static_cast<void> (0) : __assert_fail ("(SubExpr->getType()->isRecordType() || SubExpr->getType()->isArrayType()) && \"Expression bound to a temporary must have record or array type!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 773, __PRETTY_FUNCTION__))
;
774
775 return new (C) CXXBindTemporaryExpr(Temp, SubExpr);
776}
777
778CXXTemporaryObjectExpr::CXXTemporaryObjectExpr(const ASTContext &C,
779 CXXConstructorDecl *Cons,
780 QualType Type,
781 TypeSourceInfo *TSI,
782 ArrayRef<Expr*> Args,
783 SourceRange ParenOrBraceRange,
784 bool HadMultipleCandidates,
785 bool ListInitialization,
786 bool StdInitListInitialization,
787 bool ZeroInitialization)
788 : CXXConstructExpr(C, CXXTemporaryObjectExprClass, Type,
789 TSI->getTypeLoc().getBeginLoc(), Cons, false, Args,
790 HadMultipleCandidates, ListInitialization,
791 StdInitListInitialization, ZeroInitialization,
792 CXXConstructExpr::CK_Complete, ParenOrBraceRange),
793 Type(TSI) {}
794
795SourceLocation CXXTemporaryObjectExpr::getBeginLoc() const {
796 return Type->getTypeLoc().getBeginLoc();
797}
798
799SourceLocation CXXTemporaryObjectExpr::getEndLoc() const {
800 SourceLocation Loc = getParenOrBraceRange().getEnd();
801 if (Loc.isInvalid() && getNumArgs())
802 Loc = getArg(getNumArgs() - 1)->getEndLoc();
803 return Loc;
804}
805
806CXXConstructExpr *CXXConstructExpr::Create(const ASTContext &C, QualType T,
807 SourceLocation Loc,
808 CXXConstructorDecl *Ctor,
809 bool Elidable,
810 ArrayRef<Expr*> Args,
811 bool HadMultipleCandidates,
812 bool ListInitialization,
813 bool StdInitListInitialization,
814 bool ZeroInitialization,
815 ConstructionKind ConstructKind,
816 SourceRange ParenOrBraceRange) {
817 return new (C) CXXConstructExpr(C, CXXConstructExprClass, T, Loc,
818 Ctor, Elidable, Args,
819 HadMultipleCandidates, ListInitialization,
820 StdInitListInitialization,
821 ZeroInitialization, ConstructKind,
822 ParenOrBraceRange);
823}
824
825CXXConstructExpr::CXXConstructExpr(const ASTContext &C, StmtClass SC,
826 QualType T, SourceLocation Loc,
827 CXXConstructorDecl *Ctor,
828 bool Elidable,
829 ArrayRef<Expr*> Args,
830 bool HadMultipleCandidates,
831 bool ListInitialization,
832 bool StdInitListInitialization,
833 bool ZeroInitialization,
834 ConstructionKind ConstructKind,
835 SourceRange ParenOrBraceRange)
836 : Expr(SC, T, VK_RValue, OK_Ordinary,
837 T->isDependentType(), T->isDependentType(),
838 T->isInstantiationDependentType(),
839 T->containsUnexpandedParameterPack()),
840 Constructor(Ctor), Loc(Loc), ParenOrBraceRange(ParenOrBraceRange),
841 NumArgs(Args.size()), Elidable(Elidable),
842 HadMultipleCandidates(HadMultipleCandidates),
843 ListInitialization(ListInitialization),
844 StdInitListInitialization(StdInitListInitialization),
845 ZeroInitialization(ZeroInitialization), ConstructKind(ConstructKind) {
846 if (NumArgs) {
847 this->Args = new (C) Stmt*[Args.size()];
848
849 for (unsigned i = 0; i != Args.size(); ++i) {
850 assert(Args[i] && "NULL argument in CXXConstructExpr")((Args[i] && "NULL argument in CXXConstructExpr") ? static_cast
<void> (0) : __assert_fail ("Args[i] && \"NULL argument in CXXConstructExpr\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 850, __PRETTY_FUNCTION__))
;
851
852 if (Args[i]->isValueDependent())
853 ExprBits.ValueDependent = true;
854 if (Args[i]->isInstantiationDependent())
855 ExprBits.InstantiationDependent = true;
856 if (Args[i]->containsUnexpandedParameterPack())
857 ExprBits.ContainsUnexpandedParameterPack = true;
858
859 this->Args[i] = Args[i];
860 }
861 }
862}
863
864LambdaCapture::LambdaCapture(SourceLocation Loc, bool Implicit,
865 LambdaCaptureKind Kind, VarDecl *Var,
866 SourceLocation EllipsisLoc)
867 : DeclAndBits(Var, 0), Loc(Loc), EllipsisLoc(EllipsisLoc) {
868 unsigned Bits = 0;
869 if (Implicit)
870 Bits |= Capture_Implicit;
871
872 switch (Kind) {
873 case LCK_StarThis:
874 Bits |= Capture_ByCopy;
875 LLVM_FALLTHROUGH[[clang::fallthrough]];
876 case LCK_This:
877 assert(!Var && "'this' capture cannot have a variable!")((!Var && "'this' capture cannot have a variable!") ?
static_cast<void> (0) : __assert_fail ("!Var && \"'this' capture cannot have a variable!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 877, __PRETTY_FUNCTION__))
;
878 Bits |= Capture_This;
879 break;
880
881 case LCK_ByCopy:
882 Bits |= Capture_ByCopy;
883 LLVM_FALLTHROUGH[[clang::fallthrough]];
884 case LCK_ByRef:
885 assert(Var && "capture must have a variable!")((Var && "capture must have a variable!") ? static_cast
<void> (0) : __assert_fail ("Var && \"capture must have a variable!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 885, __PRETTY_FUNCTION__))
;
886 break;
887 case LCK_VLAType:
888 assert(!Var && "VLA type capture cannot have a variable!")((!Var && "VLA type capture cannot have a variable!")
? static_cast<void> (0) : __assert_fail ("!Var && \"VLA type capture cannot have a variable!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 888, __PRETTY_FUNCTION__))
;
889 break;
890 }
891 DeclAndBits.setInt(Bits);
892}
893
894LambdaCaptureKind LambdaCapture::getCaptureKind() const {
895 if (capturesVLAType())
896 return LCK_VLAType;
897 bool CapByCopy = DeclAndBits.getInt() & Capture_ByCopy;
898 if (capturesThis())
899 return CapByCopy ? LCK_StarThis : LCK_This;
900 return CapByCopy ? LCK_ByCopy : LCK_ByRef;
901}
902
903LambdaExpr::LambdaExpr(QualType T, SourceRange IntroducerRange,
904 LambdaCaptureDefault CaptureDefault,
905 SourceLocation CaptureDefaultLoc,
906 ArrayRef<LambdaCapture> Captures, bool ExplicitParams,
907 bool ExplicitResultType, ArrayRef<Expr *> CaptureInits,
908 SourceLocation ClosingBrace,
909 bool ContainsUnexpandedParameterPack)
910 : Expr(LambdaExprClass, T, VK_RValue, OK_Ordinary, T->isDependentType(),
911 T->isDependentType(), T->isDependentType(),
912 ContainsUnexpandedParameterPack),
913 IntroducerRange(IntroducerRange), CaptureDefaultLoc(CaptureDefaultLoc),
914 NumCaptures(Captures.size()), CaptureDefault(CaptureDefault),
915 ExplicitParams(ExplicitParams), ExplicitResultType(ExplicitResultType),
916 ClosingBrace(ClosingBrace) {
917 assert(CaptureInits.size() == Captures.size() && "Wrong number of arguments")((CaptureInits.size() == Captures.size() && "Wrong number of arguments"
) ? static_cast<void> (0) : __assert_fail ("CaptureInits.size() == Captures.size() && \"Wrong number of arguments\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 917, __PRETTY_FUNCTION__))
;
918 CXXRecordDecl *Class = getLambdaClass();
919 CXXRecordDecl::LambdaDefinitionData &Data = Class->getLambdaData();
920
921 // FIXME: Propagate "has unexpanded parameter pack" bit.
922
923 // Copy captures.
924 const ASTContext &Context = Class->getASTContext();
925 Data.NumCaptures = NumCaptures;
926 Data.NumExplicitCaptures = 0;
927 Data.Captures =
928 (LambdaCapture *)Context.Allocate(sizeof(LambdaCapture) * NumCaptures);
929 LambdaCapture *ToCapture = Data.Captures;
930 for (unsigned I = 0, N = Captures.size(); I != N; ++I) {
931 if (Captures[I].isExplicit())
932 ++Data.NumExplicitCaptures;
933
934 *ToCapture++ = Captures[I];
935 }
936
937 // Copy initialization expressions for the non-static data members.
938 Stmt **Stored = getStoredStmts();
939 for (unsigned I = 0, N = CaptureInits.size(); I != N; ++I)
940 *Stored++ = CaptureInits[I];
941
942 // Copy the body of the lambda.
943 *Stored++ = getCallOperator()->getBody();
944}
945
946LambdaExpr *LambdaExpr::Create(
947 const ASTContext &Context, CXXRecordDecl *Class,
948 SourceRange IntroducerRange, LambdaCaptureDefault CaptureDefault,
949 SourceLocation CaptureDefaultLoc, ArrayRef<LambdaCapture> Captures,
950 bool ExplicitParams, bool ExplicitResultType, ArrayRef<Expr *> CaptureInits,
951 SourceLocation ClosingBrace, bool ContainsUnexpandedParameterPack) {
952 // Determine the type of the expression (i.e., the type of the
953 // function object we're creating).
954 QualType T = Context.getTypeDeclType(Class);
955
956 unsigned Size = totalSizeToAlloc<Stmt *>(Captures.size() + 1);
957 void *Mem = Context.Allocate(Size);
958 return new (Mem)
959 LambdaExpr(T, IntroducerRange, CaptureDefault, CaptureDefaultLoc,
960 Captures, ExplicitParams, ExplicitResultType, CaptureInits,
961 ClosingBrace, ContainsUnexpandedParameterPack);
962}
963
964LambdaExpr *LambdaExpr::CreateDeserialized(const ASTContext &C,
965 unsigned NumCaptures) {
966 unsigned Size = totalSizeToAlloc<Stmt *>(NumCaptures + 1);
967 void *Mem = C.Allocate(Size);
968 return new (Mem) LambdaExpr(EmptyShell(), NumCaptures);
969}
970
971bool LambdaExpr::isInitCapture(const LambdaCapture *C) const {
972 return (C->capturesVariable() && C->getCapturedVar()->isInitCapture() &&
973 (getCallOperator() == C->getCapturedVar()->getDeclContext()));
974}
975
976LambdaExpr::capture_iterator LambdaExpr::capture_begin() const {
977 return getLambdaClass()->getLambdaData().Captures;
978}
979
980LambdaExpr::capture_iterator LambdaExpr::capture_end() const {
981 return capture_begin() + NumCaptures;
982}
983
984LambdaExpr::capture_range LambdaExpr::captures() const {
985 return capture_range(capture_begin(), capture_end());
986}
987
988LambdaExpr::capture_iterator LambdaExpr::explicit_capture_begin() const {
989 return capture_begin();
990}
991
992LambdaExpr::capture_iterator LambdaExpr::explicit_capture_end() const {
993 struct CXXRecordDecl::LambdaDefinitionData &Data
994 = getLambdaClass()->getLambdaData();
995 return Data.Captures + Data.NumExplicitCaptures;
996}
997
998LambdaExpr::capture_range LambdaExpr::explicit_captures() const {
999 return capture_range(explicit_capture_begin(), explicit_capture_end());
1000}
1001
1002LambdaExpr::capture_iterator LambdaExpr::implicit_capture_begin() const {
1003 return explicit_capture_end();
1004}
1005
1006LambdaExpr::capture_iterator LambdaExpr::implicit_capture_end() const {
1007 return capture_end();
1008}
1009
1010LambdaExpr::capture_range LambdaExpr::implicit_captures() const {
1011 return capture_range(implicit_capture_begin(), implicit_capture_end());
1012}
1013
1014CXXRecordDecl *LambdaExpr::getLambdaClass() const {
1015 return getType()->getAsCXXRecordDecl();
1016}
1017
1018CXXMethodDecl *LambdaExpr::getCallOperator() const {
1019 CXXRecordDecl *Record = getLambdaClass();
1020 return Record->getLambdaCallOperator();
1021}
1022
1023TemplateParameterList *LambdaExpr::getTemplateParameterList() const {
1024 CXXRecordDecl *Record = getLambdaClass();
1025 return Record->getGenericLambdaTemplateParameterList();
1026
1027}
1028
1029CompoundStmt *LambdaExpr::getBody() const {
1030 // FIXME: this mutation in getBody is bogus. It should be
1031 // initialized in ASTStmtReader::VisitLambdaExpr, but for reasons I
1032 // don't understand, that doesn't work.
1033 if (!getStoredStmts()[NumCaptures])
1034 *const_cast<Stmt **>(&getStoredStmts()[NumCaptures]) =
1035 getCallOperator()->getBody();
1036
1037 return static_cast<CompoundStmt *>(getStoredStmts()[NumCaptures]);
1038}
1039
1040bool LambdaExpr::isMutable() const {
1041 return !getCallOperator()->isConst();
1042}
1043
1044ExprWithCleanups::ExprWithCleanups(Expr *subexpr,
1045 bool CleanupsHaveSideEffects,
1046 ArrayRef<CleanupObject> objects)
1047 : Expr(ExprWithCleanupsClass, subexpr->getType(),
1048 subexpr->getValueKind(), subexpr->getObjectKind(),
1049 subexpr->isTypeDependent(), subexpr->isValueDependent(),
1050 subexpr->isInstantiationDependent(),
1051 subexpr->containsUnexpandedParameterPack()),
1052 SubExpr(subexpr) {
1053 ExprWithCleanupsBits.CleanupsHaveSideEffects = CleanupsHaveSideEffects;
1054 ExprWithCleanupsBits.NumObjects = objects.size();
1055 for (unsigned i = 0, e = objects.size(); i != e; ++i)
1056 getTrailingObjects<CleanupObject>()[i] = objects[i];
1057}
1058
1059ExprWithCleanups *ExprWithCleanups::Create(const ASTContext &C, Expr *subexpr,
1060 bool CleanupsHaveSideEffects,
1061 ArrayRef<CleanupObject> objects) {
1062 void *buffer = C.Allocate(totalSizeToAlloc<CleanupObject>(objects.size()),
1063 alignof(ExprWithCleanups));
1064 return new (buffer)
1065 ExprWithCleanups(subexpr, CleanupsHaveSideEffects, objects);
1066}
1067
1068ExprWithCleanups::ExprWithCleanups(EmptyShell empty, unsigned numObjects)
1069 : Expr(ExprWithCleanupsClass, empty) {
1070 ExprWithCleanupsBits.NumObjects = numObjects;
1071}
1072
1073ExprWithCleanups *ExprWithCleanups::Create(const ASTContext &C,
1074 EmptyShell empty,
1075 unsigned numObjects) {
1076 void *buffer = C.Allocate(totalSizeToAlloc<CleanupObject>(numObjects),
1077 alignof(ExprWithCleanups));
1078 return new (buffer) ExprWithCleanups(empty, numObjects);
1079}
1080
1081CXXUnresolvedConstructExpr::CXXUnresolvedConstructExpr(TypeSourceInfo *Type,
1082 SourceLocation LParenLoc,
1083 ArrayRef<Expr*> Args,
1084 SourceLocation RParenLoc)
1085 : Expr(CXXUnresolvedConstructExprClass,
1086 Type->getType().getNonReferenceType(),
1087 (Type->getType()->isLValueReferenceType()
1088 ? VK_LValue
1089 : Type->getType()->isRValueReferenceType() ? VK_XValue
1090 : VK_RValue),
1091 OK_Ordinary,
1092 Type->getType()->isDependentType() ||
1093 Type->getType()->getContainedDeducedType(),
1094 true, true, Type->getType()->containsUnexpandedParameterPack()),
1095 Type(Type), LParenLoc(LParenLoc), RParenLoc(RParenLoc),
1096 NumArgs(Args.size()) {
1097 auto **StoredArgs = getTrailingObjects<Expr *>();
1098 for (unsigned I = 0; I != Args.size(); ++I) {
1099 if (Args[I]->containsUnexpandedParameterPack())
1100 ExprBits.ContainsUnexpandedParameterPack = true;
1101
1102 StoredArgs[I] = Args[I];
1103 }
1104}
1105
1106CXXUnresolvedConstructExpr *
1107CXXUnresolvedConstructExpr::Create(const ASTContext &C,
1108 TypeSourceInfo *Type,
1109 SourceLocation LParenLoc,
1110 ArrayRef<Expr*> Args,
1111 SourceLocation RParenLoc) {
1112 void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(Args.size()));
1113 return new (Mem) CXXUnresolvedConstructExpr(Type, LParenLoc, Args, RParenLoc);
1114}
1115
1116CXXUnresolvedConstructExpr *
1117CXXUnresolvedConstructExpr::CreateEmpty(const ASTContext &C, unsigned NumArgs) {
1118 Stmt::EmptyShell Empty;
1119 void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(NumArgs));
1120 return new (Mem) CXXUnresolvedConstructExpr(Empty, NumArgs);
1121}
1122
1123SourceLocation CXXUnresolvedConstructExpr::getBeginLoc() const {
1124 return Type->getTypeLoc().getBeginLoc();
1125}
1126
1127CXXDependentScopeMemberExpr::CXXDependentScopeMemberExpr(
1128 const ASTContext &C, Expr *Base, QualType BaseType, bool IsArrow,
1129 SourceLocation OperatorLoc, NestedNameSpecifierLoc QualifierLoc,
1130 SourceLocation TemplateKWLoc, NamedDecl *FirstQualifierFoundInScope,
1131 DeclarationNameInfo MemberNameInfo,
1132 const TemplateArgumentListInfo *TemplateArgs)
1133 : Expr(CXXDependentScopeMemberExprClass, C.DependentTy, VK_LValue,
1134 OK_Ordinary, true, true, true,
1135 ((Base && Base->containsUnexpandedParameterPack()) ||
1136 (QualifierLoc &&
1137 QualifierLoc.getNestedNameSpecifier()
1138 ->containsUnexpandedParameterPack()) ||
1139 MemberNameInfo.containsUnexpandedParameterPack())),
1140 Base(Base), BaseType(BaseType), IsArrow(IsArrow),
1141 HasTemplateKWAndArgsInfo(TemplateArgs != nullptr ||
1142 TemplateKWLoc.isValid()),
1143 OperatorLoc(OperatorLoc), QualifierLoc(QualifierLoc),
1144 FirstQualifierFoundInScope(FirstQualifierFoundInScope),
1145 MemberNameInfo(MemberNameInfo) {
1146 if (TemplateArgs) {
1147 bool Dependent = true;
1148 bool InstantiationDependent = true;
1149 bool ContainsUnexpandedParameterPack = false;
1150 getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
1151 TemplateKWLoc, *TemplateArgs, getTrailingObjects<TemplateArgumentLoc>(),
1152 Dependent, InstantiationDependent, ContainsUnexpandedParameterPack);
1153 if (ContainsUnexpandedParameterPack)
1154 ExprBits.ContainsUnexpandedParameterPack = true;
1155 } else if (TemplateKWLoc.isValid()) {
1156 getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
1157 TemplateKWLoc);
1158 }
1159}
1160
1161CXXDependentScopeMemberExpr *
1162CXXDependentScopeMemberExpr::Create(const ASTContext &C,
1163 Expr *Base, QualType BaseType, bool IsArrow,
1164 SourceLocation OperatorLoc,
1165 NestedNameSpecifierLoc QualifierLoc,
1166 SourceLocation TemplateKWLoc,
1167 NamedDecl *FirstQualifierFoundInScope,
1168 DeclarationNameInfo MemberNameInfo,
1169 const TemplateArgumentListInfo *TemplateArgs) {
1170 bool HasTemplateKWAndArgsInfo = TemplateArgs || TemplateKWLoc.isValid();
1171 unsigned NumTemplateArgs = TemplateArgs ? TemplateArgs->size() : 0;
1172 std::size_t Size =
1173 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1174 HasTemplateKWAndArgsInfo, NumTemplateArgs);
1175
1176 void *Mem = C.Allocate(Size, alignof(CXXDependentScopeMemberExpr));
1177 return new (Mem) CXXDependentScopeMemberExpr(C, Base, BaseType,
1178 IsArrow, OperatorLoc,
1179 QualifierLoc,
1180 TemplateKWLoc,
1181 FirstQualifierFoundInScope,
1182 MemberNameInfo, TemplateArgs);
1183}
1184
1185CXXDependentScopeMemberExpr *
1186CXXDependentScopeMemberExpr::CreateEmpty(const ASTContext &C,
1187 bool HasTemplateKWAndArgsInfo,
1188 unsigned NumTemplateArgs) {
1189 assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo)((NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo) ? static_cast
<void> (0) : __assert_fail ("NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo"
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 1189, __PRETTY_FUNCTION__))
;
1190 std::size_t Size =
1191 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1192 HasTemplateKWAndArgsInfo, NumTemplateArgs);
1193 void *Mem = C.Allocate(Size, alignof(CXXDependentScopeMemberExpr));
1194 auto *E =
1195 new (Mem) CXXDependentScopeMemberExpr(C, nullptr, QualType(),
1196 false, SourceLocation(),
1197 NestedNameSpecifierLoc(),
1198 SourceLocation(), nullptr,
1199 DeclarationNameInfo(), nullptr);
1200 E->HasTemplateKWAndArgsInfo = HasTemplateKWAndArgsInfo;
1201 return E;
1202}
1203
1204bool CXXDependentScopeMemberExpr::isImplicitAccess() const {
1205 if (!Base)
1206 return true;
1207
1208 return cast<Expr>(Base)->isImplicitCXXThis();
1209}
1210
1211static bool hasOnlyNonStaticMemberFunctions(UnresolvedSetIterator begin,
1212 UnresolvedSetIterator end) {
1213 do {
1214 NamedDecl *decl = *begin;
1215 if (isa<UnresolvedUsingValueDecl>(decl))
1216 return false;
1217
1218 // Unresolved member expressions should only contain methods and
1219 // method templates.
1220 if (cast<CXXMethodDecl>(decl->getUnderlyingDecl()->getAsFunction())
1221 ->isStatic())
1222 return false;
1223 } while (++begin != end);
1224
1225 return true;
1226}
1227
1228UnresolvedMemberExpr::UnresolvedMemberExpr(const ASTContext &C,
1229 bool HasUnresolvedUsing,
1230 Expr *Base, QualType BaseType,
1231 bool IsArrow,
1232 SourceLocation OperatorLoc,
1233 NestedNameSpecifierLoc QualifierLoc,
1234 SourceLocation TemplateKWLoc,
1235 const DeclarationNameInfo &MemberNameInfo,
1236 const TemplateArgumentListInfo *TemplateArgs,
1237 UnresolvedSetIterator Begin,
1238 UnresolvedSetIterator End)
1239 : OverloadExpr(
1240 UnresolvedMemberExprClass, C, QualifierLoc, TemplateKWLoc,
1241 MemberNameInfo, TemplateArgs, Begin, End,
1242 // Dependent
1243 ((Base && Base->isTypeDependent()) || BaseType->isDependentType()),
1244 ((Base && Base->isInstantiationDependent()) ||
1245 BaseType->isInstantiationDependentType()),
1246 // Contains unexpanded parameter pack
1247 ((Base && Base->containsUnexpandedParameterPack()) ||
1248 BaseType->containsUnexpandedParameterPack())),
1249 IsArrow(IsArrow), HasUnresolvedUsing(HasUnresolvedUsing), Base(Base),
1250 BaseType(BaseType), OperatorLoc(OperatorLoc) {
1251 // Check whether all of the members are non-static member functions,
1252 // and if so, mark give this bound-member type instead of overload type.
1253 if (hasOnlyNonStaticMemberFunctions(Begin, End))
1254 setType(C.BoundMemberTy);
1255}
1256
1257bool UnresolvedMemberExpr::isImplicitAccess() const {
1258 if (!Base)
1259 return true;
1260
1261 return cast<Expr>(Base)->isImplicitCXXThis();
1262}
1263
1264UnresolvedMemberExpr *UnresolvedMemberExpr::Create(
1265 const ASTContext &C, bool HasUnresolvedUsing, Expr *Base, QualType BaseType,
1266 bool IsArrow, SourceLocation OperatorLoc,
1267 NestedNameSpecifierLoc QualifierLoc, SourceLocation TemplateKWLoc,
1268 const DeclarationNameInfo &MemberNameInfo,
1269 const TemplateArgumentListInfo *TemplateArgs, UnresolvedSetIterator Begin,
1270 UnresolvedSetIterator End) {
1271 bool HasTemplateKWAndArgsInfo = TemplateArgs || TemplateKWLoc.isValid();
1272 std::size_t Size =
1273 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1274 HasTemplateKWAndArgsInfo, TemplateArgs ? TemplateArgs->size() : 0);
1275
1276 void *Mem = C.Allocate(Size, alignof(UnresolvedMemberExpr));
1277 return new (Mem) UnresolvedMemberExpr(
1278 C, HasUnresolvedUsing, Base, BaseType, IsArrow, OperatorLoc, QualifierLoc,
1279 TemplateKWLoc, MemberNameInfo, TemplateArgs, Begin, End);
1280}
1281
1282UnresolvedMemberExpr *
1283UnresolvedMemberExpr::CreateEmpty(const ASTContext &C,
1284 bool HasTemplateKWAndArgsInfo,
1285 unsigned NumTemplateArgs) {
1286 assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo)((NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo) ? static_cast
<void> (0) : __assert_fail ("NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo"
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 1286, __PRETTY_FUNCTION__))
;
1287 std::size_t Size =
1288 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1289 HasTemplateKWAndArgsInfo, NumTemplateArgs);
1290
1291 void *Mem = C.Allocate(Size, alignof(UnresolvedMemberExpr));
1292 auto *E = new (Mem) UnresolvedMemberExpr(EmptyShell());
1
'E' initialized to a null pointer value
1293 E->HasTemplateKWAndArgsInfo = HasTemplateKWAndArgsInfo;
2
Access to field 'HasTemplateKWAndArgsInfo' results in a dereference of a null pointer (loaded from variable 'E')
1294 return E;
1295}
1296
1297CXXRecordDecl *UnresolvedMemberExpr::getNamingClass() const {
1298 // Unlike for UnresolvedLookupExpr, it is very easy to re-derive this.
1299
1300 // If there was a nested name specifier, it names the naming class.
1301 // It can't be dependent: after all, we were actually able to do the
1302 // lookup.
1303 CXXRecordDecl *Record = nullptr;
1304 auto *NNS = getQualifier();
1305 if (NNS && NNS->getKind() != NestedNameSpecifier::Super) {
1306 const Type *T = getQualifier()->getAsType();
1307 assert(T && "qualifier in member expression does not name type")((T && "qualifier in member expression does not name type"
) ? static_cast<void> (0) : __assert_fail ("T && \"qualifier in member expression does not name type\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 1307, __PRETTY_FUNCTION__))
;
1308 Record = T->getAsCXXRecordDecl();
1309 assert(Record && "qualifier in member expression does not name record")((Record && "qualifier in member expression does not name record"
) ? static_cast<void> (0) : __assert_fail ("Record && \"qualifier in member expression does not name record\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 1309, __PRETTY_FUNCTION__))
;
1310 }
1311 // Otherwise the naming class must have been the base class.
1312 else {
1313 QualType BaseType = getBaseType().getNonReferenceType();
1314 if (isArrow()) {
1315 const auto *PT = BaseType->getAs<PointerType>();
1316 assert(PT && "base of arrow member access is not pointer")((PT && "base of arrow member access is not pointer")
? static_cast<void> (0) : __assert_fail ("PT && \"base of arrow member access is not pointer\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 1316, __PRETTY_FUNCTION__))
;
1317 BaseType = PT->getPointeeType();
1318 }
1319
1320 Record = BaseType->getAsCXXRecordDecl();
1321 assert(Record && "base of member expression does not name record")((Record && "base of member expression does not name record"
) ? static_cast<void> (0) : __assert_fail ("Record && \"base of member expression does not name record\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/AST/ExprCXX.cpp"
, 1321, __PRETTY_FUNCTION__))
;
1322 }
1323
1324 return Record;
1325}
1326
1327SizeOfPackExpr *
1328SizeOfPackExpr::Create(ASTContext &Context, SourceLocation OperatorLoc,
1329 NamedDecl *Pack, SourceLocation PackLoc,
1330 SourceLocation RParenLoc,
1331 Optional<unsigned> Length,
1332 ArrayRef<TemplateArgument> PartialArgs) {
1333 void *Storage =
1334 Context.Allocate(totalSizeToAlloc<TemplateArgument>(PartialArgs.size()));
1335 return new (Storage) SizeOfPackExpr(Context.getSizeType(), OperatorLoc, Pack,
1336 PackLoc, RParenLoc, Length, PartialArgs);
1337}
1338
1339SizeOfPackExpr *SizeOfPackExpr::CreateDeserialized(ASTContext &Context,
1340 unsigned NumPartialArgs) {
1341 void *Storage =
1342 Context.Allocate(totalSizeToAlloc<TemplateArgument>(NumPartialArgs));
1343 return new (Storage) SizeOfPackExpr(EmptyShell(), NumPartialArgs);
1344}
1345
1346SubstNonTypeTemplateParmPackExpr::
1347SubstNonTypeTemplateParmPackExpr(QualType T,
1348 ExprValueKind ValueKind,
1349 NonTypeTemplateParmDecl *Param,
1350 SourceLocation NameLoc,
1351 const TemplateArgument &ArgPack)
1352 : Expr(SubstNonTypeTemplateParmPackExprClass, T, ValueKind, OK_Ordinary,
1353 true, true, true, true),
1354 Param(Param), Arguments(ArgPack.pack_begin()),
1355 NumArguments(ArgPack.pack_size()), NameLoc(NameLoc) {}
1356
1357TemplateArgument SubstNonTypeTemplateParmPackExpr::getArgumentPack() const {
1358 return TemplateArgument(llvm::makeArrayRef(Arguments, NumArguments));
1359}
1360
1361FunctionParmPackExpr::FunctionParmPackExpr(QualType T, ParmVarDecl *ParamPack,
1362 SourceLocation NameLoc,
1363 unsigned NumParams,
1364 ParmVarDecl *const *Params)
1365 : Expr(FunctionParmPackExprClass, T, VK_LValue, OK_Ordinary, true, true,
1366 true, true),
1367 ParamPack(ParamPack), NameLoc(NameLoc), NumParameters(NumParams) {
1368 if (Params)
1369 std::uninitialized_copy(Params, Params + NumParams,
1370 getTrailingObjects<ParmVarDecl *>());
1371}
1372
1373FunctionParmPackExpr *
1374FunctionParmPackExpr::Create(const ASTContext &Context, QualType T,
1375 ParmVarDecl *ParamPack, SourceLocation NameLoc,
1376 ArrayRef<ParmVarDecl *> Params) {
1377 return new (Context.Allocate(totalSizeToAlloc<ParmVarDecl *>(Params.size())))
1378 FunctionParmPackExpr(T, ParamPack, NameLoc, Params.size(), Params.data());
1379}
1380
1381FunctionParmPackExpr *
1382FunctionParmPackExpr::CreateEmpty(const ASTContext &Context,
1383 unsigned NumParams) {
1384 return new (Context.Allocate(totalSizeToAlloc<ParmVarDecl *>(NumParams)))
1385 FunctionParmPackExpr(QualType(), nullptr, SourceLocation(), 0, nullptr);
1386}
1387
1388void MaterializeTemporaryExpr::setExtendingDecl(const ValueDecl *ExtendedBy,
1389 unsigned ManglingNumber) {
1390 // We only need extra state if we have to remember more than just the Stmt.
1391 if (!ExtendedBy)
1392 return;
1393
1394 // We may need to allocate extra storage for the mangling number and the
1395 // extended-by ValueDecl.
1396 if (!State.is<ExtraState *>()) {
1397 auto *ES = new (ExtendedBy->getASTContext()) ExtraState;
1398 ES->Temporary = State.get<Stmt *>();
1399 State = ES;
1400 }
1401
1402 auto ES = State.get<ExtraState *>();
1403 ES->ExtendingDecl = ExtendedBy;
1404 ES->ManglingNumber = ManglingNumber;
1405}
1406
1407TypeTraitExpr::TypeTraitExpr(QualType T, SourceLocation Loc, TypeTrait Kind,
1408 ArrayRef<TypeSourceInfo *> Args,
1409 SourceLocation RParenLoc,
1410 bool Value)
1411 : Expr(TypeTraitExprClass, T, VK_RValue, OK_Ordinary,
1412 /*TypeDependent=*/false,
1413 /*ValueDependent=*/false,
1414 /*InstantiationDependent=*/false,
1415 /*ContainsUnexpandedParameterPack=*/false),
1416 Loc(Loc), RParenLoc(RParenLoc) {
1417 TypeTraitExprBits.Kind = Kind;
1418 TypeTraitExprBits.Value = Value;
1419 TypeTraitExprBits.NumArgs = Args.size();
1420
1421 auto **ToArgs = getTrailingObjects<TypeSourceInfo *>();
1422
1423 for (unsigned I = 0, N = Args.size(); I != N; ++I) {
1424 if (Args[I]->getType()->isDependentType())
1425 setValueDependent(true);
1426 if (Args[I]->getType()->isInstantiationDependentType())
1427 setInstantiationDependent(true);
1428 if (Args[I]->getType()->containsUnexpandedParameterPack())
1429 setContainsUnexpandedParameterPack(true);
1430
1431 ToArgs[I] = Args[I];
1432 }
1433}
1434
1435TypeTraitExpr *TypeTraitExpr::Create(const ASTContext &C, QualType T,
1436 SourceLocation Loc,
1437 TypeTrait Kind,
1438 ArrayRef<TypeSourceInfo *> Args,
1439 SourceLocation RParenLoc,
1440 bool Value) {
1441 void *Mem = C.Allocate(totalSizeToAlloc<TypeSourceInfo *>(Args.size()));
1442 return new (Mem) TypeTraitExpr(T, Loc, Kind, Args, RParenLoc, Value);
1443}
1444
1445TypeTraitExpr *TypeTraitExpr::CreateDeserialized(const ASTContext &C,
1446 unsigned NumArgs) {
1447 void *Mem = C.Allocate(totalSizeToAlloc<TypeSourceInfo *>(NumArgs));
1448 return new (Mem) TypeTraitExpr(EmptyShell());
1449}
1450
1451void ArrayTypeTraitExpr::anchor() {}