Bug Summary

File:tools/clang/lib/AST/ExprCXX.cpp
Warning:line 1382, column 19
Access to field 'Temporary' results in a dereference of a null pointer (loaded from variable 'ES')

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-eagerly-assume -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-7/lib/clang/7.0.0 -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-7~svn338205/build-llvm/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-7~svn338205/tools/clang/include -I /build/llvm-toolchain-snapshot-7~svn338205/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-7~svn338205/build-llvm/include -I /build/llvm-toolchain-snapshot-7~svn338205/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/x86_64-linux-gnu/c++/8 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/x86_64-linux-gnu/c++/8 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/backward -internal-isystem /usr/include/clang/7.0.0/include/ -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-7/lib/clang/7.0.0/include -internal-externc-isystem /usr/lib/gcc/x86_64-linux-gnu/8/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-class-memaccess -Wno-comment -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-7~svn338205/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-2018-07-29-043837-17923-1 -x c++ /build/llvm-toolchain-snapshot-7~svn338205/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)")(static_cast <bool> (isTypeOperand() && "Cannot call getTypeOperand for typeid(expr)"
) ? void (0) : __assert_fail ("isTypeOperand() && \"Cannot call getTypeOperand for typeid(expr)\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 78, __extension__ __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)")(static_cast <bool> (isTypeOperand() && "Cannot call getTypeOperand for __uuidof(expr)"
) ? void (0) : __assert_fail ("isTypeOperand() && \"Cannot call getTypeOperand for __uuidof(expr)\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 85, __extension__ __PRETTY_FUNCTION__))
;
86 Qualifiers Quals;
87 return Context.getUnqualifiedArrayType(
88 Operand.get<TypeSourceInfo *>()->getType().getNonReferenceType(), Quals);
89}
90
91// CXXScalarValueInitExpr
92SourceLocation CXXScalarValueInitExpr::getLocStart() 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) &&(static_cast <bool> ((initializer != nullptr || initializationStyle
== NoInit) && "Only NoInit can have no initializer."
) ? void (0) : __assert_fail ("(initializer != nullptr || initializationStyle == NoInit) && \"Only NoInit can have no initializer.\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 115, __extension__ __PRETTY_FUNCTION__))
115 "Only NoInit can have no initializer.")(static_cast <bool> ((initializer != nullptr || initializationStyle
== NoInit) && "Only NoInit can have no initializer."
) ? void (0) : __assert_fail ("(initializer != nullptr || initializationStyle == NoInit) && \"Only NoInit can have no initializer.\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 115, __extension__ __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")(static_cast <bool> (SubExprs == nullptr && "SubExprs already allocated"
) ? void (0) : __assert_fail ("SubExprs == nullptr && \"SubExprs already allocated\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 163, __extension__ __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 ||(static_cast <bool> ((ICE->getCastKind() == CK_NoOp ||
getOperatorDelete()->isDestroyingOperatorDelete()) &&
"only a destroying operator delete can have a converted arg"
) ? void (0) : __assert_fail ("(ICE->getCastKind() == CK_NoOp || getOperatorDelete()->isDestroyingOperatorDelete()) && \"only a destroying operator delete can have a converted arg\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 190, __extension__ __PRETTY_FUNCTION__))
189 getOperatorDelete()->isDestroyingOperatorDelete()) &&(static_cast <bool> ((ICE->getCastKind() == CK_NoOp ||
getOperatorDelete()->isDestroyingOperatorDelete()) &&
"only a destroying operator delete can have a converted arg"
) ? void (0) : __assert_fail ("(ICE->getCastKind() == CK_NoOp || getOperatorDelete()->isDestroyingOperatorDelete()) && \"only a destroying operator delete can have a converted arg\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 190, __extension__ __PRETTY_FUNCTION__))
190 "only a destroying operator delete can have a converted arg")(static_cast <bool> ((ICE->getCastKind() == CK_NoOp ||
getOperatorDelete()->isDestroyingOperatorDelete()) &&
"only a destroying operator delete can have a converted arg"
) ? void (0) : __assert_fail ("(ICE->getCastKind() == CK_NoOp || getOperatorDelete()->isDestroyingOperatorDelete()) && \"only a destroying operator delete can have a converted arg\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 190, __extension__ __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::getLocEnd() 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())(static_cast <bool> (Args || TemplateKWLoc.isValid()) ?
void (0) : __assert_fail ("Args || TemplateKWLoc.isValid()",
"/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 271, __extension__ __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)(static_cast <bool> (NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo
) ? void (0) : __assert_fail ("NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo"
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 288, __extension__ __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!")(static_cast <bool> (!Results && "Results already initialized!"
) ? void (0) : __assert_fail ("!Results && \"Results already initialized!\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 369, __extension__ __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")(static_cast <bool> (QualifierLoc && "should be created for dependent qualifiers"
) ? void (0) : __assert_fail ("QualifierLoc && \"should be created for dependent qualifiers\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 426, __extension__ __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)(static_cast <bool> (NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo
) ? void (0) : __assert_fail ("NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo"
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 440, __extension__ __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::getLocStart() const {
454 if (isa<CXXTemporaryObjectExpr>(this))
455 return cast<CXXTemporaryObjectExpr>(this)->getLocStart();
456 return Loc;
457}
458
459SourceLocation CXXConstructExpr::getLocEnd() const {
460 if (isa<CXXTemporaryObjectExpr>(this))
461 return cast<CXXTemporaryObjectExpr>(this)->getLocEnd();
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->getLocEnd();
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)->getLocEnd());
487 else
488 // Postfix operator
489 return SourceRange(getArg(0)->getLocStart(), getOperatorLoc());
490 } else if (Kind == OO_Arrow) {
491 return getArg(0)->getSourceRange();
492 } else if (Kind == OO_Call) {
493 return SourceRange(getArg(0)->getLocStart(), getRParenLoc());
494 } else if (Kind == OO_Subscript) {
495 return SourceRange(getArg(0)->getLocStart(), getRParenLoc());
496 } else if (getNumArgs() == 1) {
497 return SourceRange(getOperatorLoc(), getArg(0)->getLocEnd());
498 } else if (getNumArgs() == 2) {
499 return SourceRange(getArg(0)->getLocStart(), getArg(1)->getLocEnd());
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 = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
563 auto *E =
564 new (Buffer) CXXStaticCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
565 RParenLoc, AngleBrackets);
566 if (PathSize)
567 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
568 E->getTrailingObjects<CXXBaseSpecifier *>());
569 return E;
570}
571
572CXXStaticCastExpr *CXXStaticCastExpr::CreateEmpty(const ASTContext &C,
573 unsigned PathSize) {
574 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
575 return new (Buffer) CXXStaticCastExpr(EmptyShell(), PathSize);
576}
577
578CXXDynamicCastExpr *CXXDynamicCastExpr::Create(const ASTContext &C, QualType T,
579 ExprValueKind VK,
580 CastKind K, Expr *Op,
581 const CXXCastPath *BasePath,
582 TypeSourceInfo *WrittenTy,
583 SourceLocation L,
584 SourceLocation RParenLoc,
585 SourceRange AngleBrackets) {
586 unsigned PathSize = (BasePath ? BasePath->size() : 0);
587 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
588 auto *E =
589 new (Buffer) CXXDynamicCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
590 RParenLoc, AngleBrackets);
591 if (PathSize)
592 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
593 E->getTrailingObjects<CXXBaseSpecifier *>());
594 return E;
595}
596
597CXXDynamicCastExpr *CXXDynamicCastExpr::CreateEmpty(const ASTContext &C,
598 unsigned PathSize) {
599 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
600 return new (Buffer) CXXDynamicCastExpr(EmptyShell(), PathSize);
601}
602
603/// isAlwaysNull - Return whether the result of the dynamic_cast is proven
604/// to always be null. For example:
605///
606/// struct A { };
607/// struct B final : A { };
608/// struct C { };
609///
610/// C *f(B* b) { return dynamic_cast<C*>(b); }
611bool CXXDynamicCastExpr::isAlwaysNull() const
612{
613 QualType SrcType = getSubExpr()->getType();
614 QualType DestType = getType();
615
616 if (const auto *SrcPTy = SrcType->getAs<PointerType>()) {
617 SrcType = SrcPTy->getPointeeType();
618 DestType = DestType->castAs<PointerType>()->getPointeeType();
619 }
620
621 if (DestType->isVoidType())
622 return false;
623
624 const auto *SrcRD =
625 cast<CXXRecordDecl>(SrcType->castAs<RecordType>()->getDecl());
626
627 if (!SrcRD->hasAttr<FinalAttr>())
628 return false;
629
630 const auto *DestRD =
631 cast<CXXRecordDecl>(DestType->castAs<RecordType>()->getDecl());
632
633 return !DestRD->isDerivedFrom(SrcRD);
634}
635
636CXXReinterpretCastExpr *
637CXXReinterpretCastExpr::Create(const ASTContext &C, QualType T,
638 ExprValueKind VK, CastKind K, Expr *Op,
639 const CXXCastPath *BasePath,
640 TypeSourceInfo *WrittenTy, SourceLocation L,
641 SourceLocation RParenLoc,
642 SourceRange AngleBrackets) {
643 unsigned PathSize = (BasePath ? BasePath->size() : 0);
644 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
645 auto *E =
646 new (Buffer) CXXReinterpretCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
647 RParenLoc, AngleBrackets);
648 if (PathSize)
649 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
650 E->getTrailingObjects<CXXBaseSpecifier *>());
651 return E;
652}
653
654CXXReinterpretCastExpr *
655CXXReinterpretCastExpr::CreateEmpty(const ASTContext &C, unsigned PathSize) {
656 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
657 return new (Buffer) CXXReinterpretCastExpr(EmptyShell(), PathSize);
658}
659
660CXXConstCastExpr *CXXConstCastExpr::Create(const ASTContext &C, QualType T,
661 ExprValueKind VK, Expr *Op,
662 TypeSourceInfo *WrittenTy,
663 SourceLocation L,
664 SourceLocation RParenLoc,
665 SourceRange AngleBrackets) {
666 return new (C) CXXConstCastExpr(T, VK, Op, WrittenTy, L, RParenLoc, AngleBrackets);
667}
668
669CXXConstCastExpr *CXXConstCastExpr::CreateEmpty(const ASTContext &C) {
670 return new (C) CXXConstCastExpr(EmptyShell());
671}
672
673CXXFunctionalCastExpr *
674CXXFunctionalCastExpr::Create(const ASTContext &C, QualType T, ExprValueKind VK,
675 TypeSourceInfo *Written, CastKind K, Expr *Op,
676 const CXXCastPath *BasePath,
677 SourceLocation L, SourceLocation R) {
678 unsigned PathSize = (BasePath ? BasePath->size() : 0);
679 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
680 auto *E =
681 new (Buffer) CXXFunctionalCastExpr(T, VK, Written, K, Op, PathSize, L, R);
682 if (PathSize)
683 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
684 E->getTrailingObjects<CXXBaseSpecifier *>());
685 return E;
686}
687
688CXXFunctionalCastExpr *
689CXXFunctionalCastExpr::CreateEmpty(const ASTContext &C, unsigned PathSize) {
690 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
691 return new (Buffer) CXXFunctionalCastExpr(EmptyShell(), PathSize);
692}
693
694SourceLocation CXXFunctionalCastExpr::getLocStart() const {
695 return getTypeInfoAsWritten()->getTypeLoc().getLocStart();
696}
697
698SourceLocation CXXFunctionalCastExpr::getLocEnd() const {
699 return RParenLoc.isValid() ? RParenLoc : getSubExpr()->getLocEnd();
700}
701
702UserDefinedLiteral::LiteralOperatorKind
703UserDefinedLiteral::getLiteralOperatorKind() const {
704 if (getNumArgs() == 0)
705 return LOK_Template;
706 if (getNumArgs() == 2)
707 return LOK_String;
708
709 assert(getNumArgs() == 1 && "unexpected #args in literal operator call")(static_cast <bool> (getNumArgs() == 1 && "unexpected #args in literal operator call"
) ? void (0) : __assert_fail ("getNumArgs() == 1 && \"unexpected #args in literal operator call\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 709, __extension__ __PRETTY_FUNCTION__))
;
710 QualType ParamTy =
711 cast<FunctionDecl>(getCalleeDecl())->getParamDecl(0)->getType();
712 if (ParamTy->isPointerType())
713 return LOK_Raw;
714 if (ParamTy->isAnyCharacterType())
715 return LOK_Character;
716 if (ParamTy->isIntegerType())
717 return LOK_Integer;
718 if (ParamTy->isFloatingType())
719 return LOK_Floating;
720
721 llvm_unreachable("unknown kind of literal operator")::llvm::llvm_unreachable_internal("unknown kind of literal operator"
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 721)
;
722}
723
724Expr *UserDefinedLiteral::getCookedLiteral() {
725#ifndef NDEBUG
726 LiteralOperatorKind LOK = getLiteralOperatorKind();
727 assert(LOK != LOK_Template && LOK != LOK_Raw && "not a cooked literal")(static_cast <bool> (LOK != LOK_Template && LOK
!= LOK_Raw && "not a cooked literal") ? void (0) : __assert_fail
("LOK != LOK_Template && LOK != LOK_Raw && \"not a cooked literal\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 727, __extension__ __PRETTY_FUNCTION__))
;
728#endif
729 return getArg(0);
730}
731
732const IdentifierInfo *UserDefinedLiteral::getUDSuffix() const {
733 return cast<FunctionDecl>(getCalleeDecl())->getLiteralIdentifier();
734}
735
736CXXDefaultInitExpr::CXXDefaultInitExpr(const ASTContext &C, SourceLocation Loc,
737 FieldDecl *Field, QualType T)
738 : Expr(CXXDefaultInitExprClass, T.getNonLValueExprType(C),
739 T->isLValueReferenceType() ? VK_LValue : T->isRValueReferenceType()
740 ? VK_XValue
741 : VK_RValue,
742 /*FIXME*/ OK_Ordinary, false, false, false, false),
743 Field(Field), Loc(Loc) {
744 assert(Field->hasInClassInitializer())(static_cast <bool> (Field->hasInClassInitializer())
? void (0) : __assert_fail ("Field->hasInClassInitializer()"
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 744, __extension__ __PRETTY_FUNCTION__))
;
745}
746
747CXXTemporary *CXXTemporary::Create(const ASTContext &C,
748 const CXXDestructorDecl *Destructor) {
749 return new (C) CXXTemporary(Destructor);
750}
751
752CXXBindTemporaryExpr *CXXBindTemporaryExpr::Create(const ASTContext &C,
753 CXXTemporary *Temp,
754 Expr* SubExpr) {
755 assert((SubExpr->getType()->isRecordType() ||(static_cast <bool> ((SubExpr->getType()->isRecordType
() || SubExpr->getType()->isArrayType()) && "Expression bound to a temporary must have record or array type!"
) ? 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-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 757, __extension__ __PRETTY_FUNCTION__))
756 SubExpr->getType()->isArrayType()) &&(static_cast <bool> ((SubExpr->getType()->isRecordType
() || SubExpr->getType()->isArrayType()) && "Expression bound to a temporary must have record or array type!"
) ? 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-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 757, __extension__ __PRETTY_FUNCTION__))
757 "Expression bound to a temporary must have record or array type!")(static_cast <bool> ((SubExpr->getType()->isRecordType
() || SubExpr->getType()->isArrayType()) && "Expression bound to a temporary must have record or array type!"
) ? 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-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 757, __extension__ __PRETTY_FUNCTION__))
;
758
759 return new (C) CXXBindTemporaryExpr(Temp, SubExpr);
760}
761
762CXXTemporaryObjectExpr::CXXTemporaryObjectExpr(const ASTContext &C,
763 CXXConstructorDecl *Cons,
764 QualType Type,
765 TypeSourceInfo *TSI,
766 ArrayRef<Expr*> Args,
767 SourceRange ParenOrBraceRange,
768 bool HadMultipleCandidates,
769 bool ListInitialization,
770 bool StdInitListInitialization,
771 bool ZeroInitialization)
772 : CXXConstructExpr(C, CXXTemporaryObjectExprClass, Type,
773 TSI->getTypeLoc().getBeginLoc(), Cons, false, Args,
774 HadMultipleCandidates, ListInitialization,
775 StdInitListInitialization, ZeroInitialization,
776 CXXConstructExpr::CK_Complete, ParenOrBraceRange),
777 Type(TSI) {}
778
779SourceLocation CXXTemporaryObjectExpr::getLocStart() const {
780 return Type->getTypeLoc().getBeginLoc();
781}
782
783SourceLocation CXXTemporaryObjectExpr::getLocEnd() const {
784 SourceLocation Loc = getParenOrBraceRange().getEnd();
785 if (Loc.isInvalid() && getNumArgs())
786 Loc = getArg(getNumArgs()-1)->getLocEnd();
787 return Loc;
788}
789
790CXXConstructExpr *CXXConstructExpr::Create(const ASTContext &C, QualType T,
791 SourceLocation Loc,
792 CXXConstructorDecl *Ctor,
793 bool Elidable,
794 ArrayRef<Expr*> Args,
795 bool HadMultipleCandidates,
796 bool ListInitialization,
797 bool StdInitListInitialization,
798 bool ZeroInitialization,
799 ConstructionKind ConstructKind,
800 SourceRange ParenOrBraceRange) {
801 return new (C) CXXConstructExpr(C, CXXConstructExprClass, T, Loc,
802 Ctor, Elidable, Args,
803 HadMultipleCandidates, ListInitialization,
804 StdInitListInitialization,
805 ZeroInitialization, ConstructKind,
806 ParenOrBraceRange);
807}
808
809CXXConstructExpr::CXXConstructExpr(const ASTContext &C, StmtClass SC,
810 QualType T, SourceLocation Loc,
811 CXXConstructorDecl *Ctor,
812 bool Elidable,
813 ArrayRef<Expr*> Args,
814 bool HadMultipleCandidates,
815 bool ListInitialization,
816 bool StdInitListInitialization,
817 bool ZeroInitialization,
818 ConstructionKind ConstructKind,
819 SourceRange ParenOrBraceRange)
820 : Expr(SC, T, VK_RValue, OK_Ordinary,
821 T->isDependentType(), T->isDependentType(),
822 T->isInstantiationDependentType(),
823 T->containsUnexpandedParameterPack()),
824 Constructor(Ctor), Loc(Loc), ParenOrBraceRange(ParenOrBraceRange),
825 NumArgs(Args.size()), Elidable(Elidable),
826 HadMultipleCandidates(HadMultipleCandidates),
827 ListInitialization(ListInitialization),
828 StdInitListInitialization(StdInitListInitialization),
829 ZeroInitialization(ZeroInitialization), ConstructKind(ConstructKind) {
830 if (NumArgs) {
831 this->Args = new (C) Stmt*[Args.size()];
832
833 for (unsigned i = 0; i != Args.size(); ++i) {
834 assert(Args[i] && "NULL argument in CXXConstructExpr")(static_cast <bool> (Args[i] && "NULL argument in CXXConstructExpr"
) ? void (0) : __assert_fail ("Args[i] && \"NULL argument in CXXConstructExpr\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 834, __extension__ __PRETTY_FUNCTION__))
;
835
836 if (Args[i]->isValueDependent())
837 ExprBits.ValueDependent = true;
838 if (Args[i]->isInstantiationDependent())
839 ExprBits.InstantiationDependent = true;
840 if (Args[i]->containsUnexpandedParameterPack())
841 ExprBits.ContainsUnexpandedParameterPack = true;
842
843 this->Args[i] = Args[i];
844 }
845 }
846}
847
848LambdaCapture::LambdaCapture(SourceLocation Loc, bool Implicit,
849 LambdaCaptureKind Kind, VarDecl *Var,
850 SourceLocation EllipsisLoc)
851 : DeclAndBits(Var, 0), Loc(Loc), EllipsisLoc(EllipsisLoc) {
852 unsigned Bits = 0;
853 if (Implicit)
854 Bits |= Capture_Implicit;
855
856 switch (Kind) {
857 case LCK_StarThis:
858 Bits |= Capture_ByCopy;
859 LLVM_FALLTHROUGH[[clang::fallthrough]];
860 case LCK_This:
861 assert(!Var && "'this' capture cannot have a variable!")(static_cast <bool> (!Var && "'this' capture cannot have a variable!"
) ? void (0) : __assert_fail ("!Var && \"'this' capture cannot have a variable!\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 861, __extension__ __PRETTY_FUNCTION__))
;
862 Bits |= Capture_This;
863 break;
864
865 case LCK_ByCopy:
866 Bits |= Capture_ByCopy;
867 LLVM_FALLTHROUGH[[clang::fallthrough]];
868 case LCK_ByRef:
869 assert(Var && "capture must have a variable!")(static_cast <bool> (Var && "capture must have a variable!"
) ? void (0) : __assert_fail ("Var && \"capture must have a variable!\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 869, __extension__ __PRETTY_FUNCTION__))
;
870 break;
871 case LCK_VLAType:
872 assert(!Var && "VLA type capture cannot have a variable!")(static_cast <bool> (!Var && "VLA type capture cannot have a variable!"
) ? void (0) : __assert_fail ("!Var && \"VLA type capture cannot have a variable!\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 872, __extension__ __PRETTY_FUNCTION__))
;
873 break;
874 }
875 DeclAndBits.setInt(Bits);
876}
877
878LambdaCaptureKind LambdaCapture::getCaptureKind() const {
879 if (capturesVLAType())
880 return LCK_VLAType;
881 bool CapByCopy = DeclAndBits.getInt() & Capture_ByCopy;
882 if (capturesThis())
883 return CapByCopy ? LCK_StarThis : LCK_This;
884 return CapByCopy ? LCK_ByCopy : LCK_ByRef;
885}
886
887LambdaExpr::LambdaExpr(QualType T, SourceRange IntroducerRange,
888 LambdaCaptureDefault CaptureDefault,
889 SourceLocation CaptureDefaultLoc,
890 ArrayRef<LambdaCapture> Captures, bool ExplicitParams,
891 bool ExplicitResultType, ArrayRef<Expr *> CaptureInits,
892 SourceLocation ClosingBrace,
893 bool ContainsUnexpandedParameterPack)
894 : Expr(LambdaExprClass, T, VK_RValue, OK_Ordinary, T->isDependentType(),
895 T->isDependentType(), T->isDependentType(),
896 ContainsUnexpandedParameterPack),
897 IntroducerRange(IntroducerRange), CaptureDefaultLoc(CaptureDefaultLoc),
898 NumCaptures(Captures.size()), CaptureDefault(CaptureDefault),
899 ExplicitParams(ExplicitParams), ExplicitResultType(ExplicitResultType),
900 ClosingBrace(ClosingBrace) {
901 assert(CaptureInits.size() == Captures.size() && "Wrong number of arguments")(static_cast <bool> (CaptureInits.size() == Captures.size
() && "Wrong number of arguments") ? void (0) : __assert_fail
("CaptureInits.size() == Captures.size() && \"Wrong number of arguments\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 901, __extension__ __PRETTY_FUNCTION__))
;
902 CXXRecordDecl *Class = getLambdaClass();
903 CXXRecordDecl::LambdaDefinitionData &Data = Class->getLambdaData();
904
905 // FIXME: Propagate "has unexpanded parameter pack" bit.
906
907 // Copy captures.
908 const ASTContext &Context = Class->getASTContext();
909 Data.NumCaptures = NumCaptures;
910 Data.NumExplicitCaptures = 0;
911 Data.Captures =
912 (LambdaCapture *)Context.Allocate(sizeof(LambdaCapture) * NumCaptures);
913 LambdaCapture *ToCapture = Data.Captures;
914 for (unsigned I = 0, N = Captures.size(); I != N; ++I) {
915 if (Captures[I].isExplicit())
916 ++Data.NumExplicitCaptures;
917
918 *ToCapture++ = Captures[I];
919 }
920
921 // Copy initialization expressions for the non-static data members.
922 Stmt **Stored = getStoredStmts();
923 for (unsigned I = 0, N = CaptureInits.size(); I != N; ++I)
924 *Stored++ = CaptureInits[I];
925
926 // Copy the body of the lambda.
927 *Stored++ = getCallOperator()->getBody();
928}
929
930LambdaExpr *LambdaExpr::Create(
931 const ASTContext &Context, CXXRecordDecl *Class,
932 SourceRange IntroducerRange, LambdaCaptureDefault CaptureDefault,
933 SourceLocation CaptureDefaultLoc, ArrayRef<LambdaCapture> Captures,
934 bool ExplicitParams, bool ExplicitResultType, ArrayRef<Expr *> CaptureInits,
935 SourceLocation ClosingBrace, bool ContainsUnexpandedParameterPack) {
936 // Determine the type of the expression (i.e., the type of the
937 // function object we're creating).
938 QualType T = Context.getTypeDeclType(Class);
939
940 unsigned Size = totalSizeToAlloc<Stmt *>(Captures.size() + 1);
941 void *Mem = Context.Allocate(Size);
942 return new (Mem)
943 LambdaExpr(T, IntroducerRange, CaptureDefault, CaptureDefaultLoc,
944 Captures, ExplicitParams, ExplicitResultType, CaptureInits,
945 ClosingBrace, ContainsUnexpandedParameterPack);
946}
947
948LambdaExpr *LambdaExpr::CreateDeserialized(const ASTContext &C,
949 unsigned NumCaptures) {
950 unsigned Size = totalSizeToAlloc<Stmt *>(NumCaptures + 1);
951 void *Mem = C.Allocate(Size);
952 return new (Mem) LambdaExpr(EmptyShell(), NumCaptures);
953}
954
955bool LambdaExpr::isInitCapture(const LambdaCapture *C) const {
956 return (C->capturesVariable() && C->getCapturedVar()->isInitCapture() &&
957 (getCallOperator() == C->getCapturedVar()->getDeclContext()));
958}
959
960LambdaExpr::capture_iterator LambdaExpr::capture_begin() const {
961 return getLambdaClass()->getLambdaData().Captures;
962}
963
964LambdaExpr::capture_iterator LambdaExpr::capture_end() const {
965 return capture_begin() + NumCaptures;
966}
967
968LambdaExpr::capture_range LambdaExpr::captures() const {
969 return capture_range(capture_begin(), capture_end());
970}
971
972LambdaExpr::capture_iterator LambdaExpr::explicit_capture_begin() const {
973 return capture_begin();
974}
975
976LambdaExpr::capture_iterator LambdaExpr::explicit_capture_end() const {
977 struct CXXRecordDecl::LambdaDefinitionData &Data
978 = getLambdaClass()->getLambdaData();
979 return Data.Captures + Data.NumExplicitCaptures;
980}
981
982LambdaExpr::capture_range LambdaExpr::explicit_captures() const {
983 return capture_range(explicit_capture_begin(), explicit_capture_end());
984}
985
986LambdaExpr::capture_iterator LambdaExpr::implicit_capture_begin() const {
987 return explicit_capture_end();
988}
989
990LambdaExpr::capture_iterator LambdaExpr::implicit_capture_end() const {
991 return capture_end();
992}
993
994LambdaExpr::capture_range LambdaExpr::implicit_captures() const {
995 return capture_range(implicit_capture_begin(), implicit_capture_end());
996}
997
998CXXRecordDecl *LambdaExpr::getLambdaClass() const {
999 return getType()->getAsCXXRecordDecl();
1000}
1001
1002CXXMethodDecl *LambdaExpr::getCallOperator() const {
1003 CXXRecordDecl *Record = getLambdaClass();
1004 return Record->getLambdaCallOperator();
1005}
1006
1007TemplateParameterList *LambdaExpr::getTemplateParameterList() const {
1008 CXXRecordDecl *Record = getLambdaClass();
1009 return Record->getGenericLambdaTemplateParameterList();
1010
1011}
1012
1013CompoundStmt *LambdaExpr::getBody() const {
1014 // FIXME: this mutation in getBody is bogus. It should be
1015 // initialized in ASTStmtReader::VisitLambdaExpr, but for reasons I
1016 // don't understand, that doesn't work.
1017 if (!getStoredStmts()[NumCaptures])
1018 *const_cast<Stmt **>(&getStoredStmts()[NumCaptures]) =
1019 getCallOperator()->getBody();
1020
1021 return static_cast<CompoundStmt *>(getStoredStmts()[NumCaptures]);
1022}
1023
1024bool LambdaExpr::isMutable() const {
1025 return !getCallOperator()->isConst();
1026}
1027
1028ExprWithCleanups::ExprWithCleanups(Expr *subexpr,
1029 bool CleanupsHaveSideEffects,
1030 ArrayRef<CleanupObject> objects)
1031 : Expr(ExprWithCleanupsClass, subexpr->getType(),
1032 subexpr->getValueKind(), subexpr->getObjectKind(),
1033 subexpr->isTypeDependent(), subexpr->isValueDependent(),
1034 subexpr->isInstantiationDependent(),
1035 subexpr->containsUnexpandedParameterPack()),
1036 SubExpr(subexpr) {
1037 ExprWithCleanupsBits.CleanupsHaveSideEffects = CleanupsHaveSideEffects;
1038 ExprWithCleanupsBits.NumObjects = objects.size();
1039 for (unsigned i = 0, e = objects.size(); i != e; ++i)
1040 getTrailingObjects<CleanupObject>()[i] = objects[i];
1041}
1042
1043ExprWithCleanups *ExprWithCleanups::Create(const ASTContext &C, Expr *subexpr,
1044 bool CleanupsHaveSideEffects,
1045 ArrayRef<CleanupObject> objects) {
1046 void *buffer = C.Allocate(totalSizeToAlloc<CleanupObject>(objects.size()),
1047 alignof(ExprWithCleanups));
1048 return new (buffer)
1049 ExprWithCleanups(subexpr, CleanupsHaveSideEffects, objects);
1050}
1051
1052ExprWithCleanups::ExprWithCleanups(EmptyShell empty, unsigned numObjects)
1053 : Expr(ExprWithCleanupsClass, empty) {
1054 ExprWithCleanupsBits.NumObjects = numObjects;
1055}
1056
1057ExprWithCleanups *ExprWithCleanups::Create(const ASTContext &C,
1058 EmptyShell empty,
1059 unsigned numObjects) {
1060 void *buffer = C.Allocate(totalSizeToAlloc<CleanupObject>(numObjects),
1061 alignof(ExprWithCleanups));
1062 return new (buffer) ExprWithCleanups(empty, numObjects);
1063}
1064
1065CXXUnresolvedConstructExpr::CXXUnresolvedConstructExpr(TypeSourceInfo *Type,
1066 SourceLocation LParenLoc,
1067 ArrayRef<Expr*> Args,
1068 SourceLocation RParenLoc)
1069 : Expr(CXXUnresolvedConstructExprClass,
1070 Type->getType().getNonReferenceType(),
1071 (Type->getType()->isLValueReferenceType()
1072 ? VK_LValue
1073 : Type->getType()->isRValueReferenceType() ? VK_XValue
1074 : VK_RValue),
1075 OK_Ordinary,
1076 Type->getType()->isDependentType() ||
1077 Type->getType()->getContainedDeducedType(),
1078 true, true, Type->getType()->containsUnexpandedParameterPack()),
1079 Type(Type), LParenLoc(LParenLoc), RParenLoc(RParenLoc),
1080 NumArgs(Args.size()) {
1081 auto **StoredArgs = getTrailingObjects<Expr *>();
1082 for (unsigned I = 0; I != Args.size(); ++I) {
1083 if (Args[I]->containsUnexpandedParameterPack())
1084 ExprBits.ContainsUnexpandedParameterPack = true;
1085
1086 StoredArgs[I] = Args[I];
1087 }
1088}
1089
1090CXXUnresolvedConstructExpr *
1091CXXUnresolvedConstructExpr::Create(const ASTContext &C,
1092 TypeSourceInfo *Type,
1093 SourceLocation LParenLoc,
1094 ArrayRef<Expr*> Args,
1095 SourceLocation RParenLoc) {
1096 void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(Args.size()));
1097 return new (Mem) CXXUnresolvedConstructExpr(Type, LParenLoc, Args, RParenLoc);
1098}
1099
1100CXXUnresolvedConstructExpr *
1101CXXUnresolvedConstructExpr::CreateEmpty(const ASTContext &C, unsigned NumArgs) {
1102 Stmt::EmptyShell Empty;
1103 void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(NumArgs));
1104 return new (Mem) CXXUnresolvedConstructExpr(Empty, NumArgs);
1105}
1106
1107SourceLocation CXXUnresolvedConstructExpr::getLocStart() const {
1108 return Type->getTypeLoc().getBeginLoc();
1109}
1110
1111CXXDependentScopeMemberExpr::CXXDependentScopeMemberExpr(
1112 const ASTContext &C, Expr *Base, QualType BaseType, bool IsArrow,
1113 SourceLocation OperatorLoc, NestedNameSpecifierLoc QualifierLoc,
1114 SourceLocation TemplateKWLoc, NamedDecl *FirstQualifierFoundInScope,
1115 DeclarationNameInfo MemberNameInfo,
1116 const TemplateArgumentListInfo *TemplateArgs)
1117 : Expr(CXXDependentScopeMemberExprClass, C.DependentTy, VK_LValue,
1118 OK_Ordinary, true, true, true,
1119 ((Base && Base->containsUnexpandedParameterPack()) ||
1120 (QualifierLoc &&
1121 QualifierLoc.getNestedNameSpecifier()
1122 ->containsUnexpandedParameterPack()) ||
1123 MemberNameInfo.containsUnexpandedParameterPack())),
1124 Base(Base), BaseType(BaseType), IsArrow(IsArrow),
1125 HasTemplateKWAndArgsInfo(TemplateArgs != nullptr ||
1126 TemplateKWLoc.isValid()),
1127 OperatorLoc(OperatorLoc), QualifierLoc(QualifierLoc),
1128 FirstQualifierFoundInScope(FirstQualifierFoundInScope),
1129 MemberNameInfo(MemberNameInfo) {
1130 if (TemplateArgs) {
1131 bool Dependent = true;
1132 bool InstantiationDependent = true;
1133 bool ContainsUnexpandedParameterPack = false;
1134 getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
1135 TemplateKWLoc, *TemplateArgs, getTrailingObjects<TemplateArgumentLoc>(),
1136 Dependent, InstantiationDependent, ContainsUnexpandedParameterPack);
1137 if (ContainsUnexpandedParameterPack)
1138 ExprBits.ContainsUnexpandedParameterPack = true;
1139 } else if (TemplateKWLoc.isValid()) {
1140 getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
1141 TemplateKWLoc);
1142 }
1143}
1144
1145CXXDependentScopeMemberExpr *
1146CXXDependentScopeMemberExpr::Create(const ASTContext &C,
1147 Expr *Base, QualType BaseType, bool IsArrow,
1148 SourceLocation OperatorLoc,
1149 NestedNameSpecifierLoc QualifierLoc,
1150 SourceLocation TemplateKWLoc,
1151 NamedDecl *FirstQualifierFoundInScope,
1152 DeclarationNameInfo MemberNameInfo,
1153 const TemplateArgumentListInfo *TemplateArgs) {
1154 bool HasTemplateKWAndArgsInfo = TemplateArgs || TemplateKWLoc.isValid();
1155 unsigned NumTemplateArgs = TemplateArgs ? TemplateArgs->size() : 0;
1156 std::size_t Size =
1157 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1158 HasTemplateKWAndArgsInfo, NumTemplateArgs);
1159
1160 void *Mem = C.Allocate(Size, alignof(CXXDependentScopeMemberExpr));
1161 return new (Mem) CXXDependentScopeMemberExpr(C, Base, BaseType,
1162 IsArrow, OperatorLoc,
1163 QualifierLoc,
1164 TemplateKWLoc,
1165 FirstQualifierFoundInScope,
1166 MemberNameInfo, TemplateArgs);
1167}
1168
1169CXXDependentScopeMemberExpr *
1170CXXDependentScopeMemberExpr::CreateEmpty(const ASTContext &C,
1171 bool HasTemplateKWAndArgsInfo,
1172 unsigned NumTemplateArgs) {
1173 assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo)(static_cast <bool> (NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo
) ? void (0) : __assert_fail ("NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo"
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 1173, __extension__ __PRETTY_FUNCTION__))
;
1174 std::size_t Size =
1175 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1176 HasTemplateKWAndArgsInfo, NumTemplateArgs);
1177 void *Mem = C.Allocate(Size, alignof(CXXDependentScopeMemberExpr));
1178 auto *E =
1179 new (Mem) CXXDependentScopeMemberExpr(C, nullptr, QualType(),
1180 false, SourceLocation(),
1181 NestedNameSpecifierLoc(),
1182 SourceLocation(), nullptr,
1183 DeclarationNameInfo(), nullptr);
1184 E->HasTemplateKWAndArgsInfo = HasTemplateKWAndArgsInfo;
1185 return E;
1186}
1187
1188bool CXXDependentScopeMemberExpr::isImplicitAccess() const {
1189 if (!Base)
1190 return true;
1191
1192 return cast<Expr>(Base)->isImplicitCXXThis();
1193}
1194
1195static bool hasOnlyNonStaticMemberFunctions(UnresolvedSetIterator begin,
1196 UnresolvedSetIterator end) {
1197 do {
1198 NamedDecl *decl = *begin;
1199 if (isa<UnresolvedUsingValueDecl>(decl))
1200 return false;
1201
1202 // Unresolved member expressions should only contain methods and
1203 // method templates.
1204 if (cast<CXXMethodDecl>(decl->getUnderlyingDecl()->getAsFunction())
1205 ->isStatic())
1206 return false;
1207 } while (++begin != end);
1208
1209 return true;
1210}
1211
1212UnresolvedMemberExpr::UnresolvedMemberExpr(const ASTContext &C,
1213 bool HasUnresolvedUsing,
1214 Expr *Base, QualType BaseType,
1215 bool IsArrow,
1216 SourceLocation OperatorLoc,
1217 NestedNameSpecifierLoc QualifierLoc,
1218 SourceLocation TemplateKWLoc,
1219 const DeclarationNameInfo &MemberNameInfo,
1220 const TemplateArgumentListInfo *TemplateArgs,
1221 UnresolvedSetIterator Begin,
1222 UnresolvedSetIterator End)
1223 : OverloadExpr(
1224 UnresolvedMemberExprClass, C, QualifierLoc, TemplateKWLoc,
1225 MemberNameInfo, TemplateArgs, Begin, End,
1226 // Dependent
1227 ((Base && Base->isTypeDependent()) || BaseType->isDependentType()),
1228 ((Base && Base->isInstantiationDependent()) ||
1229 BaseType->isInstantiationDependentType()),
1230 // Contains unexpanded parameter pack
1231 ((Base && Base->containsUnexpandedParameterPack()) ||
1232 BaseType->containsUnexpandedParameterPack())),
1233 IsArrow(IsArrow), HasUnresolvedUsing(HasUnresolvedUsing), Base(Base),
1234 BaseType(BaseType), OperatorLoc(OperatorLoc) {
1235 // Check whether all of the members are non-static member functions,
1236 // and if so, mark give this bound-member type instead of overload type.
1237 if (hasOnlyNonStaticMemberFunctions(Begin, End))
1238 setType(C.BoundMemberTy);
1239}
1240
1241bool UnresolvedMemberExpr::isImplicitAccess() const {
1242 if (!Base)
1243 return true;
1244
1245 return cast<Expr>(Base)->isImplicitCXXThis();
1246}
1247
1248UnresolvedMemberExpr *UnresolvedMemberExpr::Create(
1249 const ASTContext &C, bool HasUnresolvedUsing, Expr *Base, QualType BaseType,
1250 bool IsArrow, SourceLocation OperatorLoc,
1251 NestedNameSpecifierLoc QualifierLoc, SourceLocation TemplateKWLoc,
1252 const DeclarationNameInfo &MemberNameInfo,
1253 const TemplateArgumentListInfo *TemplateArgs, UnresolvedSetIterator Begin,
1254 UnresolvedSetIterator End) {
1255 bool HasTemplateKWAndArgsInfo = TemplateArgs || TemplateKWLoc.isValid();
1256 std::size_t Size =
1257 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1258 HasTemplateKWAndArgsInfo, TemplateArgs ? TemplateArgs->size() : 0);
1259
1260 void *Mem = C.Allocate(Size, alignof(UnresolvedMemberExpr));
1261 return new (Mem) UnresolvedMemberExpr(
1262 C, HasUnresolvedUsing, Base, BaseType, IsArrow, OperatorLoc, QualifierLoc,
1263 TemplateKWLoc, MemberNameInfo, TemplateArgs, Begin, End);
1264}
1265
1266UnresolvedMemberExpr *
1267UnresolvedMemberExpr::CreateEmpty(const ASTContext &C,
1268 bool HasTemplateKWAndArgsInfo,
1269 unsigned NumTemplateArgs) {
1270 assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo)(static_cast <bool> (NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo
) ? void (0) : __assert_fail ("NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo"
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 1270, __extension__ __PRETTY_FUNCTION__))
;
1271 std::size_t Size =
1272 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1273 HasTemplateKWAndArgsInfo, NumTemplateArgs);
1274
1275 void *Mem = C.Allocate(Size, alignof(UnresolvedMemberExpr));
1276 auto *E = new (Mem) UnresolvedMemberExpr(EmptyShell());
1277 E->HasTemplateKWAndArgsInfo = HasTemplateKWAndArgsInfo;
1278 return E;
1279}
1280
1281CXXRecordDecl *UnresolvedMemberExpr::getNamingClass() const {
1282 // Unlike for UnresolvedLookupExpr, it is very easy to re-derive this.
1283
1284 // If there was a nested name specifier, it names the naming class.
1285 // It can't be dependent: after all, we were actually able to do the
1286 // lookup.
1287 CXXRecordDecl *Record = nullptr;
1288 auto *NNS = getQualifier();
1289 if (NNS && NNS->getKind() != NestedNameSpecifier::Super) {
1290 const Type *T = getQualifier()->getAsType();
1291 assert(T && "qualifier in member expression does not name type")(static_cast <bool> (T && "qualifier in member expression does not name type"
) ? void (0) : __assert_fail ("T && \"qualifier in member expression does not name type\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 1291, __extension__ __PRETTY_FUNCTION__))
;
1292 Record = T->getAsCXXRecordDecl();
1293 assert(Record && "qualifier in member expression does not name record")(static_cast <bool> (Record && "qualifier in member expression does not name record"
) ? void (0) : __assert_fail ("Record && \"qualifier in member expression does not name record\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 1293, __extension__ __PRETTY_FUNCTION__))
;
1294 }
1295 // Otherwise the naming class must have been the base class.
1296 else {
1297 QualType BaseType = getBaseType().getNonReferenceType();
1298 if (isArrow()) {
1299 const auto *PT = BaseType->getAs<PointerType>();
1300 assert(PT && "base of arrow member access is not pointer")(static_cast <bool> (PT && "base of arrow member access is not pointer"
) ? void (0) : __assert_fail ("PT && \"base of arrow member access is not pointer\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 1300, __extension__ __PRETTY_FUNCTION__))
;
1301 BaseType = PT->getPointeeType();
1302 }
1303
1304 Record = BaseType->getAsCXXRecordDecl();
1305 assert(Record && "base of member expression does not name record")(static_cast <bool> (Record && "base of member expression does not name record"
) ? void (0) : __assert_fail ("Record && \"base of member expression does not name record\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/AST/ExprCXX.cpp"
, 1305, __extension__ __PRETTY_FUNCTION__))
;
1306 }
1307
1308 return Record;
1309}
1310
1311SizeOfPackExpr *
1312SizeOfPackExpr::Create(ASTContext &Context, SourceLocation OperatorLoc,
1313 NamedDecl *Pack, SourceLocation PackLoc,
1314 SourceLocation RParenLoc,
1315 Optional<unsigned> Length,
1316 ArrayRef<TemplateArgument> PartialArgs) {
1317 void *Storage =
1318 Context.Allocate(totalSizeToAlloc<TemplateArgument>(PartialArgs.size()));
1319 return new (Storage) SizeOfPackExpr(Context.getSizeType(), OperatorLoc, Pack,
1320 PackLoc, RParenLoc, Length, PartialArgs);
1321}
1322
1323SizeOfPackExpr *SizeOfPackExpr::CreateDeserialized(ASTContext &Context,
1324 unsigned NumPartialArgs) {
1325 void *Storage =
1326 Context.Allocate(totalSizeToAlloc<TemplateArgument>(NumPartialArgs));
1327 return new (Storage) SizeOfPackExpr(EmptyShell(), NumPartialArgs);
1328}
1329
1330SubstNonTypeTemplateParmPackExpr::
1331SubstNonTypeTemplateParmPackExpr(QualType T,
1332 ExprValueKind ValueKind,
1333 NonTypeTemplateParmDecl *Param,
1334 SourceLocation NameLoc,
1335 const TemplateArgument &ArgPack)
1336 : Expr(SubstNonTypeTemplateParmPackExprClass, T, ValueKind, OK_Ordinary,
1337 true, true, true, true),
1338 Param(Param), Arguments(ArgPack.pack_begin()),
1339 NumArguments(ArgPack.pack_size()), NameLoc(NameLoc) {}
1340
1341TemplateArgument SubstNonTypeTemplateParmPackExpr::getArgumentPack() const {
1342 return TemplateArgument(llvm::makeArrayRef(Arguments, NumArguments));
1343}
1344
1345FunctionParmPackExpr::FunctionParmPackExpr(QualType T, ParmVarDecl *ParamPack,
1346 SourceLocation NameLoc,
1347 unsigned NumParams,
1348 ParmVarDecl *const *Params)
1349 : Expr(FunctionParmPackExprClass, T, VK_LValue, OK_Ordinary, true, true,
1350 true, true),
1351 ParamPack(ParamPack), NameLoc(NameLoc), NumParameters(NumParams) {
1352 if (Params)
1353 std::uninitialized_copy(Params, Params + NumParams,
1354 getTrailingObjects<ParmVarDecl *>());
1355}
1356
1357FunctionParmPackExpr *
1358FunctionParmPackExpr::Create(const ASTContext &Context, QualType T,
1359 ParmVarDecl *ParamPack, SourceLocation NameLoc,
1360 ArrayRef<ParmVarDecl *> Params) {
1361 return new (Context.Allocate(totalSizeToAlloc<ParmVarDecl *>(Params.size())))
1362 FunctionParmPackExpr(T, ParamPack, NameLoc, Params.size(), Params.data());
1363}
1364
1365FunctionParmPackExpr *
1366FunctionParmPackExpr::CreateEmpty(const ASTContext &Context,
1367 unsigned NumParams) {
1368 return new (Context.Allocate(totalSizeToAlloc<ParmVarDecl *>(NumParams)))
1369 FunctionParmPackExpr(QualType(), nullptr, SourceLocation(), 0, nullptr);
1370}
1371
1372void MaterializeTemporaryExpr::setExtendingDecl(const ValueDecl *ExtendedBy,
1373 unsigned ManglingNumber) {
1374 // We only need extra state if we have to remember more than just the Stmt.
1375 if (!ExtendedBy)
1
Assuming 'ExtendedBy' is non-null
2
Taking false branch
1376 return;
1377
1378 // We may need to allocate extra storage for the mangling number and the
1379 // extended-by ValueDecl.
1380 if (!State.is<ExtraState *>()) {
3
Taking true branch
1381 auto *ES = new (ExtendedBy->getASTContext()) ExtraState;
4
'ES' initialized to a null pointer value
1382 ES->Temporary = State.get<Stmt *>();
5
Access to field 'Temporary' results in a dereference of a null pointer (loaded from variable 'ES')
1383 State = ES;
1384 }
1385
1386 auto ES = State.get<ExtraState *>();
1387 ES->ExtendingDecl = ExtendedBy;
1388 ES->ManglingNumber = ManglingNumber;
1389}
1390
1391TypeTraitExpr::TypeTraitExpr(QualType T, SourceLocation Loc, TypeTrait Kind,
1392 ArrayRef<TypeSourceInfo *> Args,
1393 SourceLocation RParenLoc,
1394 bool Value)
1395 : Expr(TypeTraitExprClass, T, VK_RValue, OK_Ordinary,
1396 /*TypeDependent=*/false,
1397 /*ValueDependent=*/false,
1398 /*InstantiationDependent=*/false,
1399 /*ContainsUnexpandedParameterPack=*/false),
1400 Loc(Loc), RParenLoc(RParenLoc) {
1401 TypeTraitExprBits.Kind = Kind;
1402 TypeTraitExprBits.Value = Value;
1403 TypeTraitExprBits.NumArgs = Args.size();
1404
1405 auto **ToArgs = getTrailingObjects<TypeSourceInfo *>();
1406
1407 for (unsigned I = 0, N = Args.size(); I != N; ++I) {
1408 if (Args[I]->getType()->isDependentType())
1409 setValueDependent(true);
1410 if (Args[I]->getType()->isInstantiationDependentType())
1411 setInstantiationDependent(true);
1412 if (Args[I]->getType()->containsUnexpandedParameterPack())
1413 setContainsUnexpandedParameterPack(true);
1414
1415 ToArgs[I] = Args[I];
1416 }
1417}
1418
1419TypeTraitExpr *TypeTraitExpr::Create(const ASTContext &C, QualType T,
1420 SourceLocation Loc,
1421 TypeTrait Kind,
1422 ArrayRef<TypeSourceInfo *> Args,
1423 SourceLocation RParenLoc,
1424 bool Value) {
1425 void *Mem = C.Allocate(totalSizeToAlloc<TypeSourceInfo *>(Args.size()));
1426 return new (Mem) TypeTraitExpr(T, Loc, Kind, Args, RParenLoc, Value);
1427}
1428
1429TypeTraitExpr *TypeTraitExpr::CreateDeserialized(const ASTContext &C,
1430 unsigned NumArgs) {
1431 void *Mem = C.Allocate(totalSizeToAlloc<TypeSourceInfo *>(NumArgs));
1432 return new (Mem) TypeTraitExpr(EmptyShell());
1433}
1434
1435void ArrayTypeTraitExpr::anchor() {}