Bug Summary

File:tools/clang/lib/AST/ExprCXX.cpp
Warning:line 1383, 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~svn329677/build-llvm/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include -I /build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-7~svn329677/build-llvm/include -I /build/llvm-toolchain-snapshot-7~svn329677/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/x86_64-linux-gnu/c++/7.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/x86_64-linux-gnu/c++/7.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0/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/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-7~svn329677/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-checker optin.performance.Padding -analyzer-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2018-04-11-031539-24776-1 -x c++ /build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/ExprCXX.cpp
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~svn329677/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~svn329677/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~svn329677/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~svn329677/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~svn329677/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>()->isNothrow(
173 Ctx) &&
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 (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~svn329677/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~svn329677/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~svn329677/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~svn329677/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~svn329677/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 UnresolvedLookupExpr *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~svn329677/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~svn329677/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~svn329677/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 DependentScopeDeclRefExpr *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 MemberExpr *MemExpr = dyn_cast<MemberExpr>(Callee))
508 return MemExpr->getBase();
509 if (const BinaryOperator *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 MemberExpr *MemExpr =
519 dyn_cast<MemberExpr>(getCallee()->IgnoreParens()))
520 return cast<CXXMethodDecl>(MemExpr->getMemberDecl());
521
522 // FIXME: Will eventually need to cope with member pointers.
523 return nullptr;
524}
525
526CXXRecordDecl *CXXMemberCallExpr::getRecordDecl() const {
527 Expr* ThisArg = getImplicitObjectArgument();
528 if (!ThisArg)
529 return nullptr;
530
531 if (ThisArg->getType()->isAnyPointerType())
532 return ThisArg->getType()->getPointeeType()->getAsCXXRecordDecl();
533
534 return ThisArg->getType()->getAsCXXRecordDecl();
535}
536
537//===----------------------------------------------------------------------===//
538// Named casts
539//===----------------------------------------------------------------------===//
540
541/// getCastName - Get the name of the C++ cast being used, e.g.,
542/// "static_cast", "dynamic_cast", "reinterpret_cast", or
543/// "const_cast". The returned pointer must not be freed.
544const char *CXXNamedCastExpr::getCastName() const {
545 switch (getStmtClass()) {
546 case CXXStaticCastExprClass: return "static_cast";
547 case CXXDynamicCastExprClass: return "dynamic_cast";
548 case CXXReinterpretCastExprClass: return "reinterpret_cast";
549 case CXXConstCastExprClass: return "const_cast";
550 default: return "<invalid cast>";
551 }
552}
553
554CXXStaticCastExpr *CXXStaticCastExpr::Create(const ASTContext &C, QualType T,
555 ExprValueKind VK,
556 CastKind K, Expr *Op,
557 const CXXCastPath *BasePath,
558 TypeSourceInfo *WrittenTy,
559 SourceLocation L,
560 SourceLocation RParenLoc,
561 SourceRange AngleBrackets) {
562 unsigned PathSize = (BasePath ? BasePath->size() : 0);
563 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
564 CXXStaticCastExpr *E =
565 new (Buffer) CXXStaticCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
566 RParenLoc, AngleBrackets);
567 if (PathSize)
568 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
569 E->getTrailingObjects<CXXBaseSpecifier *>());
570 return E;
571}
572
573CXXStaticCastExpr *CXXStaticCastExpr::CreateEmpty(const ASTContext &C,
574 unsigned PathSize) {
575 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
576 return new (Buffer) CXXStaticCastExpr(EmptyShell(), PathSize);
577}
578
579CXXDynamicCastExpr *CXXDynamicCastExpr::Create(const ASTContext &C, QualType T,
580 ExprValueKind VK,
581 CastKind K, Expr *Op,
582 const CXXCastPath *BasePath,
583 TypeSourceInfo *WrittenTy,
584 SourceLocation L,
585 SourceLocation RParenLoc,
586 SourceRange AngleBrackets) {
587 unsigned PathSize = (BasePath ? BasePath->size() : 0);
588 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
589 CXXDynamicCastExpr *E =
590 new (Buffer) CXXDynamicCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
591 RParenLoc, AngleBrackets);
592 if (PathSize)
593 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
594 E->getTrailingObjects<CXXBaseSpecifier *>());
595 return E;
596}
597
598CXXDynamicCastExpr *CXXDynamicCastExpr::CreateEmpty(const ASTContext &C,
599 unsigned PathSize) {
600 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
601 return new (Buffer) CXXDynamicCastExpr(EmptyShell(), PathSize);
602}
603
604/// isAlwaysNull - Return whether the result of the dynamic_cast is proven
605/// to always be null. For example:
606///
607/// struct A { };
608/// struct B final : A { };
609/// struct C { };
610///
611/// C *f(B* b) { return dynamic_cast<C*>(b); }
612bool CXXDynamicCastExpr::isAlwaysNull() const
613{
614 QualType SrcType = getSubExpr()->getType();
615 QualType DestType = getType();
616
617 if (const PointerType *SrcPTy = SrcType->getAs<PointerType>()) {
618 SrcType = SrcPTy->getPointeeType();
619 DestType = DestType->castAs<PointerType>()->getPointeeType();
620 }
621
622 if (DestType->isVoidType())
623 return false;
624
625 const CXXRecordDecl *SrcRD =
626 cast<CXXRecordDecl>(SrcType->castAs<RecordType>()->getDecl());
627
628 if (!SrcRD->hasAttr<FinalAttr>())
629 return false;
630
631 const CXXRecordDecl *DestRD =
632 cast<CXXRecordDecl>(DestType->castAs<RecordType>()->getDecl());
633
634 return !DestRD->isDerivedFrom(SrcRD);
635}
636
637CXXReinterpretCastExpr *
638CXXReinterpretCastExpr::Create(const ASTContext &C, QualType T,
639 ExprValueKind VK, CastKind K, Expr *Op,
640 const CXXCastPath *BasePath,
641 TypeSourceInfo *WrittenTy, SourceLocation L,
642 SourceLocation RParenLoc,
643 SourceRange AngleBrackets) {
644 unsigned PathSize = (BasePath ? BasePath->size() : 0);
645 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
646 CXXReinterpretCastExpr *E =
647 new (Buffer) CXXReinterpretCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
648 RParenLoc, AngleBrackets);
649 if (PathSize)
650 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
651 E->getTrailingObjects<CXXBaseSpecifier *>());
652 return E;
653}
654
655CXXReinterpretCastExpr *
656CXXReinterpretCastExpr::CreateEmpty(const ASTContext &C, unsigned PathSize) {
657 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
658 return new (Buffer) CXXReinterpretCastExpr(EmptyShell(), PathSize);
659}
660
661CXXConstCastExpr *CXXConstCastExpr::Create(const ASTContext &C, QualType T,
662 ExprValueKind VK, Expr *Op,
663 TypeSourceInfo *WrittenTy,
664 SourceLocation L,
665 SourceLocation RParenLoc,
666 SourceRange AngleBrackets) {
667 return new (C) CXXConstCastExpr(T, VK, Op, WrittenTy, L, RParenLoc, AngleBrackets);
668}
669
670CXXConstCastExpr *CXXConstCastExpr::CreateEmpty(const ASTContext &C) {
671 return new (C) CXXConstCastExpr(EmptyShell());
672}
673
674CXXFunctionalCastExpr *
675CXXFunctionalCastExpr::Create(const ASTContext &C, QualType T, ExprValueKind VK,
676 TypeSourceInfo *Written, CastKind K, Expr *Op,
677 const CXXCastPath *BasePath,
678 SourceLocation L, SourceLocation R) {
679 unsigned PathSize = (BasePath ? BasePath->size() : 0);
680 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
681 CXXFunctionalCastExpr *E =
682 new (Buffer) CXXFunctionalCastExpr(T, VK, Written, K, Op, PathSize, L, R);
683 if (PathSize)
684 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
685 E->getTrailingObjects<CXXBaseSpecifier *>());
686 return E;
687}
688
689CXXFunctionalCastExpr *
690CXXFunctionalCastExpr::CreateEmpty(const ASTContext &C, unsigned PathSize) {
691 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
692 return new (Buffer) CXXFunctionalCastExpr(EmptyShell(), PathSize);
693}
694
695SourceLocation CXXFunctionalCastExpr::getLocStart() const {
696 return getTypeInfoAsWritten()->getTypeLoc().getLocStart();
697}
698
699SourceLocation CXXFunctionalCastExpr::getLocEnd() const {
700 return RParenLoc.isValid() ? RParenLoc : getSubExpr()->getLocEnd();
701}
702
703UserDefinedLiteral::LiteralOperatorKind
704UserDefinedLiteral::getLiteralOperatorKind() const {
705 if (getNumArgs() == 0)
706 return LOK_Template;
707 if (getNumArgs() == 2)
708 return LOK_String;
709
710 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~svn329677/tools/clang/lib/AST/ExprCXX.cpp"
, 710, __extension__ __PRETTY_FUNCTION__))
;
711 QualType ParamTy =
712 cast<FunctionDecl>(getCalleeDecl())->getParamDecl(0)->getType();
713 if (ParamTy->isPointerType())
714 return LOK_Raw;
715 if (ParamTy->isAnyCharacterType())
716 return LOK_Character;
717 if (ParamTy->isIntegerType())
718 return LOK_Integer;
719 if (ParamTy->isFloatingType())
720 return LOK_Floating;
721
722 llvm_unreachable("unknown kind of literal operator")::llvm::llvm_unreachable_internal("unknown kind of literal operator"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/ExprCXX.cpp"
, 722)
;
723}
724
725Expr *UserDefinedLiteral::getCookedLiteral() {
726#ifndef NDEBUG
727 LiteralOperatorKind LOK = getLiteralOperatorKind();
728 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~svn329677/tools/clang/lib/AST/ExprCXX.cpp"
, 728, __extension__ __PRETTY_FUNCTION__))
;
729#endif
730 return getArg(0);
731}
732
733const IdentifierInfo *UserDefinedLiteral::getUDSuffix() const {
734 return cast<FunctionDecl>(getCalleeDecl())->getLiteralIdentifier();
735}
736
737CXXDefaultInitExpr::CXXDefaultInitExpr(const ASTContext &C, SourceLocation Loc,
738 FieldDecl *Field, QualType T)
739 : Expr(CXXDefaultInitExprClass, T.getNonLValueExprType(C),
740 T->isLValueReferenceType() ? VK_LValue : T->isRValueReferenceType()
741 ? VK_XValue
742 : VK_RValue,
743 /*FIXME*/ OK_Ordinary, false, false, false, false),
744 Field(Field), Loc(Loc) {
745 assert(Field->hasInClassInitializer())(static_cast <bool> (Field->hasInClassInitializer())
? void (0) : __assert_fail ("Field->hasInClassInitializer()"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/ExprCXX.cpp"
, 745, __extension__ __PRETTY_FUNCTION__))
;
746}
747
748CXXTemporary *CXXTemporary::Create(const ASTContext &C,
749 const CXXDestructorDecl *Destructor) {
750 return new (C) CXXTemporary(Destructor);
751}
752
753CXXBindTemporaryExpr *CXXBindTemporaryExpr::Create(const ASTContext &C,
754 CXXTemporary *Temp,
755 Expr* SubExpr) {
756 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~svn329677/tools/clang/lib/AST/ExprCXX.cpp"
, 758, __extension__ __PRETTY_FUNCTION__))
757 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~svn329677/tools/clang/lib/AST/ExprCXX.cpp"
, 758, __extension__ __PRETTY_FUNCTION__))
758 "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~svn329677/tools/clang/lib/AST/ExprCXX.cpp"
, 758, __extension__ __PRETTY_FUNCTION__))
;
759
760 return new (C) CXXBindTemporaryExpr(Temp, SubExpr);
761}
762
763CXXTemporaryObjectExpr::CXXTemporaryObjectExpr(const ASTContext &C,
764 CXXConstructorDecl *Cons,
765 QualType Type,
766 TypeSourceInfo *TSI,
767 ArrayRef<Expr*> Args,
768 SourceRange ParenOrBraceRange,
769 bool HadMultipleCandidates,
770 bool ListInitialization,
771 bool StdInitListInitialization,
772 bool ZeroInitialization)
773 : CXXConstructExpr(C, CXXTemporaryObjectExprClass, Type,
774 TSI->getTypeLoc().getBeginLoc(), Cons, false, Args,
775 HadMultipleCandidates, ListInitialization,
776 StdInitListInitialization, ZeroInitialization,
777 CXXConstructExpr::CK_Complete, ParenOrBraceRange),
778 Type(TSI) {}
779
780SourceLocation CXXTemporaryObjectExpr::getLocStart() const {
781 return Type->getTypeLoc().getBeginLoc();
782}
783
784SourceLocation CXXTemporaryObjectExpr::getLocEnd() const {
785 SourceLocation Loc = getParenOrBraceRange().getEnd();
786 if (Loc.isInvalid() && getNumArgs())
787 Loc = getArg(getNumArgs()-1)->getLocEnd();
788 return Loc;
789}
790
791CXXConstructExpr *CXXConstructExpr::Create(const ASTContext &C, QualType T,
792 SourceLocation Loc,
793 CXXConstructorDecl *Ctor,
794 bool Elidable,
795 ArrayRef<Expr*> Args,
796 bool HadMultipleCandidates,
797 bool ListInitialization,
798 bool StdInitListInitialization,
799 bool ZeroInitialization,
800 ConstructionKind ConstructKind,
801 SourceRange ParenOrBraceRange) {
802 return new (C) CXXConstructExpr(C, CXXConstructExprClass, T, Loc,
803 Ctor, Elidable, Args,
804 HadMultipleCandidates, ListInitialization,
805 StdInitListInitialization,
806 ZeroInitialization, ConstructKind,
807 ParenOrBraceRange);
808}
809
810CXXConstructExpr::CXXConstructExpr(const ASTContext &C, StmtClass SC,
811 QualType T, SourceLocation Loc,
812 CXXConstructorDecl *Ctor,
813 bool Elidable,
814 ArrayRef<Expr*> Args,
815 bool HadMultipleCandidates,
816 bool ListInitialization,
817 bool StdInitListInitialization,
818 bool ZeroInitialization,
819 ConstructionKind ConstructKind,
820 SourceRange ParenOrBraceRange)
821 : Expr(SC, T, VK_RValue, OK_Ordinary,
822 T->isDependentType(), T->isDependentType(),
823 T->isInstantiationDependentType(),
824 T->containsUnexpandedParameterPack()),
825 Constructor(Ctor), Loc(Loc), ParenOrBraceRange(ParenOrBraceRange),
826 NumArgs(Args.size()), Elidable(Elidable),
827 HadMultipleCandidates(HadMultipleCandidates),
828 ListInitialization(ListInitialization),
829 StdInitListInitialization(StdInitListInitialization),
830 ZeroInitialization(ZeroInitialization), ConstructKind(ConstructKind) {
831 if (NumArgs) {
832 this->Args = new (C) Stmt*[Args.size()];
833
834 for (unsigned i = 0; i != Args.size(); ++i) {
835 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~svn329677/tools/clang/lib/AST/ExprCXX.cpp"
, 835, __extension__ __PRETTY_FUNCTION__))
;
836
837 if (Args[i]->isValueDependent())
838 ExprBits.ValueDependent = true;
839 if (Args[i]->isInstantiationDependent())
840 ExprBits.InstantiationDependent = true;
841 if (Args[i]->containsUnexpandedParameterPack())
842 ExprBits.ContainsUnexpandedParameterPack = true;
843
844 this->Args[i] = Args[i];
845 }
846 }
847}
848
849LambdaCapture::LambdaCapture(SourceLocation Loc, bool Implicit,
850 LambdaCaptureKind Kind, VarDecl *Var,
851 SourceLocation EllipsisLoc)
852 : DeclAndBits(Var, 0), Loc(Loc), EllipsisLoc(EllipsisLoc) {
853 unsigned Bits = 0;
854 if (Implicit)
855 Bits |= Capture_Implicit;
856
857 switch (Kind) {
858 case LCK_StarThis:
859 Bits |= Capture_ByCopy;
860 LLVM_FALLTHROUGH[[clang::fallthrough]];
861 case LCK_This:
862 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~svn329677/tools/clang/lib/AST/ExprCXX.cpp"
, 862, __extension__ __PRETTY_FUNCTION__))
;
863 Bits |= Capture_This;
864 break;
865
866 case LCK_ByCopy:
867 Bits |= Capture_ByCopy;
868 LLVM_FALLTHROUGH[[clang::fallthrough]];
869 case LCK_ByRef:
870 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~svn329677/tools/clang/lib/AST/ExprCXX.cpp"
, 870, __extension__ __PRETTY_FUNCTION__))
;
871 break;
872 case LCK_VLAType:
873 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~svn329677/tools/clang/lib/AST/ExprCXX.cpp"
, 873, __extension__ __PRETTY_FUNCTION__))
;
874 break;
875 }
876 DeclAndBits.setInt(Bits);
877}
878
879LambdaCaptureKind LambdaCapture::getCaptureKind() const {
880 if (capturesVLAType())
881 return LCK_VLAType;
882 bool CapByCopy = DeclAndBits.getInt() & Capture_ByCopy;
883 if (capturesThis())
884 return CapByCopy ? LCK_StarThis : LCK_This;
885 return CapByCopy ? LCK_ByCopy : LCK_ByRef;
886}
887
888LambdaExpr::LambdaExpr(QualType T, SourceRange IntroducerRange,
889 LambdaCaptureDefault CaptureDefault,
890 SourceLocation CaptureDefaultLoc,
891 ArrayRef<LambdaCapture> Captures, bool ExplicitParams,
892 bool ExplicitResultType, ArrayRef<Expr *> CaptureInits,
893 SourceLocation ClosingBrace,
894 bool ContainsUnexpandedParameterPack)
895 : Expr(LambdaExprClass, T, VK_RValue, OK_Ordinary, T->isDependentType(),
896 T->isDependentType(), T->isDependentType(),
897 ContainsUnexpandedParameterPack),
898 IntroducerRange(IntroducerRange), CaptureDefaultLoc(CaptureDefaultLoc),
899 NumCaptures(Captures.size()), CaptureDefault(CaptureDefault),
900 ExplicitParams(ExplicitParams), ExplicitResultType(ExplicitResultType),
901 ClosingBrace(ClosingBrace) {
902 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~svn329677/tools/clang/lib/AST/ExprCXX.cpp"
, 902, __extension__ __PRETTY_FUNCTION__))
;
903 CXXRecordDecl *Class = getLambdaClass();
904 CXXRecordDecl::LambdaDefinitionData &Data = Class->getLambdaData();
905
906 // FIXME: Propagate "has unexpanded parameter pack" bit.
907
908 // Copy captures.
909 const ASTContext &Context = Class->getASTContext();
910 Data.NumCaptures = NumCaptures;
911 Data.NumExplicitCaptures = 0;
912 Data.Captures =
913 (LambdaCapture *)Context.Allocate(sizeof(LambdaCapture) * NumCaptures);
914 LambdaCapture *ToCapture = Data.Captures;
915 for (unsigned I = 0, N = Captures.size(); I != N; ++I) {
916 if (Captures[I].isExplicit())
917 ++Data.NumExplicitCaptures;
918
919 *ToCapture++ = Captures[I];
920 }
921
922 // Copy initialization expressions for the non-static data members.
923 Stmt **Stored = getStoredStmts();
924 for (unsigned I = 0, N = CaptureInits.size(); I != N; ++I)
925 *Stored++ = CaptureInits[I];
926
927 // Copy the body of the lambda.
928 *Stored++ = getCallOperator()->getBody();
929}
930
931LambdaExpr *LambdaExpr::Create(
932 const ASTContext &Context, CXXRecordDecl *Class,
933 SourceRange IntroducerRange, LambdaCaptureDefault CaptureDefault,
934 SourceLocation CaptureDefaultLoc, ArrayRef<LambdaCapture> Captures,
935 bool ExplicitParams, bool ExplicitResultType, ArrayRef<Expr *> CaptureInits,
936 SourceLocation ClosingBrace, bool ContainsUnexpandedParameterPack) {
937 // Determine the type of the expression (i.e., the type of the
938 // function object we're creating).
939 QualType T = Context.getTypeDeclType(Class);
940
941 unsigned Size = totalSizeToAlloc<Stmt *>(Captures.size() + 1);
942 void *Mem = Context.Allocate(Size);
943 return new (Mem)
944 LambdaExpr(T, IntroducerRange, CaptureDefault, CaptureDefaultLoc,
945 Captures, ExplicitParams, ExplicitResultType, CaptureInits,
946 ClosingBrace, ContainsUnexpandedParameterPack);
947}
948
949LambdaExpr *LambdaExpr::CreateDeserialized(const ASTContext &C,
950 unsigned NumCaptures) {
951 unsigned Size = totalSizeToAlloc<Stmt *>(NumCaptures + 1);
952 void *Mem = C.Allocate(Size);
953 return new (Mem) LambdaExpr(EmptyShell(), NumCaptures);
954}
955
956bool LambdaExpr::isInitCapture(const LambdaCapture *C) const {
957 return (C->capturesVariable() && C->getCapturedVar()->isInitCapture() &&
958 (getCallOperator() == C->getCapturedVar()->getDeclContext()));
959}
960
961LambdaExpr::capture_iterator LambdaExpr::capture_begin() const {
962 return getLambdaClass()->getLambdaData().Captures;
963}
964
965LambdaExpr::capture_iterator LambdaExpr::capture_end() const {
966 return capture_begin() + NumCaptures;
967}
968
969LambdaExpr::capture_range LambdaExpr::captures() const {
970 return capture_range(capture_begin(), capture_end());
971}
972
973LambdaExpr::capture_iterator LambdaExpr::explicit_capture_begin() const {
974 return capture_begin();
975}
976
977LambdaExpr::capture_iterator LambdaExpr::explicit_capture_end() const {
978 struct CXXRecordDecl::LambdaDefinitionData &Data
979 = getLambdaClass()->getLambdaData();
980 return Data.Captures + Data.NumExplicitCaptures;
981}
982
983LambdaExpr::capture_range LambdaExpr::explicit_captures() const {
984 return capture_range(explicit_capture_begin(), explicit_capture_end());
985}
986
987LambdaExpr::capture_iterator LambdaExpr::implicit_capture_begin() const {
988 return explicit_capture_end();
989}
990
991LambdaExpr::capture_iterator LambdaExpr::implicit_capture_end() const {
992 return capture_end();
993}
994
995LambdaExpr::capture_range LambdaExpr::implicit_captures() const {
996 return capture_range(implicit_capture_begin(), implicit_capture_end());
997}
998
999CXXRecordDecl *LambdaExpr::getLambdaClass() const {
1000 return getType()->getAsCXXRecordDecl();
1001}
1002
1003CXXMethodDecl *LambdaExpr::getCallOperator() const {
1004 CXXRecordDecl *Record = getLambdaClass();
1005 return Record->getLambdaCallOperator();
1006}
1007
1008TemplateParameterList *LambdaExpr::getTemplateParameterList() const {
1009 CXXRecordDecl *Record = getLambdaClass();
1010 return Record->getGenericLambdaTemplateParameterList();
1011
1012}
1013
1014CompoundStmt *LambdaExpr::getBody() const {
1015 // FIXME: this mutation in getBody is bogus. It should be
1016 // initialized in ASTStmtReader::VisitLambdaExpr, but for reasons I
1017 // don't understand, that doesn't work.
1018 if (!getStoredStmts()[NumCaptures])
1019 *const_cast<Stmt **>(&getStoredStmts()[NumCaptures]) =
1020 getCallOperator()->getBody();
1021
1022 return static_cast<CompoundStmt *>(getStoredStmts()[NumCaptures]);
1023}
1024
1025bool LambdaExpr::isMutable() const {
1026 return !getCallOperator()->isConst();
1027}
1028
1029ExprWithCleanups::ExprWithCleanups(Expr *subexpr,
1030 bool CleanupsHaveSideEffects,
1031 ArrayRef<CleanupObject> objects)
1032 : Expr(ExprWithCleanupsClass, subexpr->getType(),
1033 subexpr->getValueKind(), subexpr->getObjectKind(),
1034 subexpr->isTypeDependent(), subexpr->isValueDependent(),
1035 subexpr->isInstantiationDependent(),
1036 subexpr->containsUnexpandedParameterPack()),
1037 SubExpr(subexpr) {
1038 ExprWithCleanupsBits.CleanupsHaveSideEffects = CleanupsHaveSideEffects;
1039 ExprWithCleanupsBits.NumObjects = objects.size();
1040 for (unsigned i = 0, e = objects.size(); i != e; ++i)
1041 getTrailingObjects<CleanupObject>()[i] = objects[i];
1042}
1043
1044ExprWithCleanups *ExprWithCleanups::Create(const ASTContext &C, Expr *subexpr,
1045 bool CleanupsHaveSideEffects,
1046 ArrayRef<CleanupObject> objects) {
1047 void *buffer = C.Allocate(totalSizeToAlloc<CleanupObject>(objects.size()),
1048 alignof(ExprWithCleanups));
1049 return new (buffer)
1050 ExprWithCleanups(subexpr, CleanupsHaveSideEffects, objects);
1051}
1052
1053ExprWithCleanups::ExprWithCleanups(EmptyShell empty, unsigned numObjects)
1054 : Expr(ExprWithCleanupsClass, empty) {
1055 ExprWithCleanupsBits.NumObjects = numObjects;
1056}
1057
1058ExprWithCleanups *ExprWithCleanups::Create(const ASTContext &C,
1059 EmptyShell empty,
1060 unsigned numObjects) {
1061 void *buffer = C.Allocate(totalSizeToAlloc<CleanupObject>(numObjects),
1062 alignof(ExprWithCleanups));
1063 return new (buffer) ExprWithCleanups(empty, numObjects);
1064}
1065
1066CXXUnresolvedConstructExpr::CXXUnresolvedConstructExpr(TypeSourceInfo *Type,
1067 SourceLocation LParenLoc,
1068 ArrayRef<Expr*> Args,
1069 SourceLocation RParenLoc)
1070 : Expr(CXXUnresolvedConstructExprClass,
1071 Type->getType().getNonReferenceType(),
1072 (Type->getType()->isLValueReferenceType()
1073 ? VK_LValue
1074 : Type->getType()->isRValueReferenceType() ? VK_XValue
1075 : VK_RValue),
1076 OK_Ordinary,
1077 Type->getType()->isDependentType() ||
1078 Type->getType()->getContainedDeducedType(),
1079 true, true, Type->getType()->containsUnexpandedParameterPack()),
1080 Type(Type), LParenLoc(LParenLoc), RParenLoc(RParenLoc),
1081 NumArgs(Args.size()) {
1082 Expr **StoredArgs = getTrailingObjects<Expr *>();
1083 for (unsigned I = 0; I != Args.size(); ++I) {
1084 if (Args[I]->containsUnexpandedParameterPack())
1085 ExprBits.ContainsUnexpandedParameterPack = true;
1086
1087 StoredArgs[I] = Args[I];
1088 }
1089}
1090
1091CXXUnresolvedConstructExpr *
1092CXXUnresolvedConstructExpr::Create(const ASTContext &C,
1093 TypeSourceInfo *Type,
1094 SourceLocation LParenLoc,
1095 ArrayRef<Expr*> Args,
1096 SourceLocation RParenLoc) {
1097 void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(Args.size()));
1098 return new (Mem) CXXUnresolvedConstructExpr(Type, LParenLoc, Args, RParenLoc);
1099}
1100
1101CXXUnresolvedConstructExpr *
1102CXXUnresolvedConstructExpr::CreateEmpty(const ASTContext &C, unsigned NumArgs) {
1103 Stmt::EmptyShell Empty;
1104 void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(NumArgs));
1105 return new (Mem) CXXUnresolvedConstructExpr(Empty, NumArgs);
1106}
1107
1108SourceLocation CXXUnresolvedConstructExpr::getLocStart() const {
1109 return Type->getTypeLoc().getBeginLoc();
1110}
1111
1112CXXDependentScopeMemberExpr::CXXDependentScopeMemberExpr(
1113 const ASTContext &C, Expr *Base, QualType BaseType, bool IsArrow,
1114 SourceLocation OperatorLoc, NestedNameSpecifierLoc QualifierLoc,
1115 SourceLocation TemplateKWLoc, NamedDecl *FirstQualifierFoundInScope,
1116 DeclarationNameInfo MemberNameInfo,
1117 const TemplateArgumentListInfo *TemplateArgs)
1118 : Expr(CXXDependentScopeMemberExprClass, C.DependentTy, VK_LValue,
1119 OK_Ordinary, true, true, true,
1120 ((Base && Base->containsUnexpandedParameterPack()) ||
1121 (QualifierLoc &&
1122 QualifierLoc.getNestedNameSpecifier()
1123 ->containsUnexpandedParameterPack()) ||
1124 MemberNameInfo.containsUnexpandedParameterPack())),
1125 Base(Base), BaseType(BaseType), IsArrow(IsArrow),
1126 HasTemplateKWAndArgsInfo(TemplateArgs != nullptr ||
1127 TemplateKWLoc.isValid()),
1128 OperatorLoc(OperatorLoc), QualifierLoc(QualifierLoc),
1129 FirstQualifierFoundInScope(FirstQualifierFoundInScope),
1130 MemberNameInfo(MemberNameInfo) {
1131 if (TemplateArgs) {
1132 bool Dependent = true;
1133 bool InstantiationDependent = true;
1134 bool ContainsUnexpandedParameterPack = false;
1135 getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
1136 TemplateKWLoc, *TemplateArgs, getTrailingObjects<TemplateArgumentLoc>(),
1137 Dependent, InstantiationDependent, ContainsUnexpandedParameterPack);
1138 if (ContainsUnexpandedParameterPack)
1139 ExprBits.ContainsUnexpandedParameterPack = true;
1140 } else if (TemplateKWLoc.isValid()) {
1141 getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
1142 TemplateKWLoc);
1143 }
1144}
1145
1146CXXDependentScopeMemberExpr *
1147CXXDependentScopeMemberExpr::Create(const ASTContext &C,
1148 Expr *Base, QualType BaseType, bool IsArrow,
1149 SourceLocation OperatorLoc,
1150 NestedNameSpecifierLoc QualifierLoc,
1151 SourceLocation TemplateKWLoc,
1152 NamedDecl *FirstQualifierFoundInScope,
1153 DeclarationNameInfo MemberNameInfo,
1154 const TemplateArgumentListInfo *TemplateArgs) {
1155 bool HasTemplateKWAndArgsInfo = TemplateArgs || TemplateKWLoc.isValid();
1156 unsigned NumTemplateArgs = TemplateArgs ? TemplateArgs->size() : 0;
1157 std::size_t Size =
1158 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1159 HasTemplateKWAndArgsInfo, NumTemplateArgs);
1160
1161 void *Mem = C.Allocate(Size, alignof(CXXDependentScopeMemberExpr));
1162 return new (Mem) CXXDependentScopeMemberExpr(C, Base, BaseType,
1163 IsArrow, OperatorLoc,
1164 QualifierLoc,
1165 TemplateKWLoc,
1166 FirstQualifierFoundInScope,
1167 MemberNameInfo, TemplateArgs);
1168}
1169
1170CXXDependentScopeMemberExpr *
1171CXXDependentScopeMemberExpr::CreateEmpty(const ASTContext &C,
1172 bool HasTemplateKWAndArgsInfo,
1173 unsigned NumTemplateArgs) {
1174 assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo)(static_cast <bool> (NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo
) ? void (0) : __assert_fail ("NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/ExprCXX.cpp"
, 1174, __extension__ __PRETTY_FUNCTION__))
;
1175 std::size_t Size =
1176 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1177 HasTemplateKWAndArgsInfo, NumTemplateArgs);
1178 void *Mem = C.Allocate(Size, alignof(CXXDependentScopeMemberExpr));
1179 CXXDependentScopeMemberExpr *E
1180 = new (Mem) CXXDependentScopeMemberExpr(C, nullptr, QualType(),
1181 false, SourceLocation(),
1182 NestedNameSpecifierLoc(),
1183 SourceLocation(), nullptr,
1184 DeclarationNameInfo(), nullptr);
1185 E->HasTemplateKWAndArgsInfo = HasTemplateKWAndArgsInfo;
1186 return E;
1187}
1188
1189bool CXXDependentScopeMemberExpr::isImplicitAccess() const {
1190 if (!Base)
1191 return true;
1192
1193 return cast<Expr>(Base)->isImplicitCXXThis();
1194}
1195
1196static bool hasOnlyNonStaticMemberFunctions(UnresolvedSetIterator begin,
1197 UnresolvedSetIterator end) {
1198 do {
1199 NamedDecl *decl = *begin;
1200 if (isa<UnresolvedUsingValueDecl>(decl))
1201 return false;
1202
1203 // Unresolved member expressions should only contain methods and
1204 // method templates.
1205 if (cast<CXXMethodDecl>(decl->getUnderlyingDecl()->getAsFunction())
1206 ->isStatic())
1207 return false;
1208 } while (++begin != end);
1209
1210 return true;
1211}
1212
1213UnresolvedMemberExpr::UnresolvedMemberExpr(const ASTContext &C,
1214 bool HasUnresolvedUsing,
1215 Expr *Base, QualType BaseType,
1216 bool IsArrow,
1217 SourceLocation OperatorLoc,
1218 NestedNameSpecifierLoc QualifierLoc,
1219 SourceLocation TemplateKWLoc,
1220 const DeclarationNameInfo &MemberNameInfo,
1221 const TemplateArgumentListInfo *TemplateArgs,
1222 UnresolvedSetIterator Begin,
1223 UnresolvedSetIterator End)
1224 : OverloadExpr(
1225 UnresolvedMemberExprClass, C, QualifierLoc, TemplateKWLoc,
1226 MemberNameInfo, TemplateArgs, Begin, End,
1227 // Dependent
1228 ((Base && Base->isTypeDependent()) || BaseType->isDependentType()),
1229 ((Base && Base->isInstantiationDependent()) ||
1230 BaseType->isInstantiationDependentType()),
1231 // Contains unexpanded parameter pack
1232 ((Base && Base->containsUnexpandedParameterPack()) ||
1233 BaseType->containsUnexpandedParameterPack())),
1234 IsArrow(IsArrow), HasUnresolvedUsing(HasUnresolvedUsing), Base(Base),
1235 BaseType(BaseType), OperatorLoc(OperatorLoc) {
1236 // Check whether all of the members are non-static member functions,
1237 // and if so, mark give this bound-member type instead of overload type.
1238 if (hasOnlyNonStaticMemberFunctions(Begin, End))
1239 setType(C.BoundMemberTy);
1240}
1241
1242bool UnresolvedMemberExpr::isImplicitAccess() const {
1243 if (!Base)
1244 return true;
1245
1246 return cast<Expr>(Base)->isImplicitCXXThis();
1247}
1248
1249UnresolvedMemberExpr *UnresolvedMemberExpr::Create(
1250 const ASTContext &C, bool HasUnresolvedUsing, Expr *Base, QualType BaseType,
1251 bool IsArrow, SourceLocation OperatorLoc,
1252 NestedNameSpecifierLoc QualifierLoc, SourceLocation TemplateKWLoc,
1253 const DeclarationNameInfo &MemberNameInfo,
1254 const TemplateArgumentListInfo *TemplateArgs, UnresolvedSetIterator Begin,
1255 UnresolvedSetIterator End) {
1256 bool HasTemplateKWAndArgsInfo = TemplateArgs || TemplateKWLoc.isValid();
1257 std::size_t Size =
1258 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1259 HasTemplateKWAndArgsInfo, TemplateArgs ? TemplateArgs->size() : 0);
1260
1261 void *Mem = C.Allocate(Size, alignof(UnresolvedMemberExpr));
1262 return new (Mem) UnresolvedMemberExpr(
1263 C, HasUnresolvedUsing, Base, BaseType, IsArrow, OperatorLoc, QualifierLoc,
1264 TemplateKWLoc, MemberNameInfo, TemplateArgs, Begin, End);
1265}
1266
1267UnresolvedMemberExpr *
1268UnresolvedMemberExpr::CreateEmpty(const ASTContext &C,
1269 bool HasTemplateKWAndArgsInfo,
1270 unsigned NumTemplateArgs) {
1271 assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo)(static_cast <bool> (NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo
) ? void (0) : __assert_fail ("NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/ExprCXX.cpp"
, 1271, __extension__ __PRETTY_FUNCTION__))
;
1272 std::size_t Size =
1273 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1274 HasTemplateKWAndArgsInfo, NumTemplateArgs);
1275
1276 void *Mem = C.Allocate(Size, alignof(UnresolvedMemberExpr));
1277 UnresolvedMemberExpr *E = new (Mem) UnresolvedMemberExpr(EmptyShell());
1278 E->HasTemplateKWAndArgsInfo = HasTemplateKWAndArgsInfo;
1279 return E;
1280}
1281
1282CXXRecordDecl *UnresolvedMemberExpr::getNamingClass() const {
1283 // Unlike for UnresolvedLookupExpr, it is very easy to re-derive this.
1284
1285 // If there was a nested name specifier, it names the naming class.
1286 // It can't be dependent: after all, we were actually able to do the
1287 // lookup.
1288 CXXRecordDecl *Record = nullptr;
1289 auto *NNS = getQualifier();
1290 if (NNS && NNS->getKind() != NestedNameSpecifier::Super) {
1291 const Type *T = getQualifier()->getAsType();
1292 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~svn329677/tools/clang/lib/AST/ExprCXX.cpp"
, 1292, __extension__ __PRETTY_FUNCTION__))
;
1293 Record = T->getAsCXXRecordDecl();
1294 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~svn329677/tools/clang/lib/AST/ExprCXX.cpp"
, 1294, __extension__ __PRETTY_FUNCTION__))
;
1295 }
1296 // Otherwise the naming class must have been the base class.
1297 else {
1298 QualType BaseType = getBaseType().getNonReferenceType();
1299 if (isArrow()) {
1300 const PointerType *PT = BaseType->getAs<PointerType>();
1301 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~svn329677/tools/clang/lib/AST/ExprCXX.cpp"
, 1301, __extension__ __PRETTY_FUNCTION__))
;
1302 BaseType = PT->getPointeeType();
1303 }
1304
1305 Record = BaseType->getAsCXXRecordDecl();
1306 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~svn329677/tools/clang/lib/AST/ExprCXX.cpp"
, 1306, __extension__ __PRETTY_FUNCTION__))
;
1307 }
1308
1309 return Record;
1310}
1311
1312SizeOfPackExpr *
1313SizeOfPackExpr::Create(ASTContext &Context, SourceLocation OperatorLoc,
1314 NamedDecl *Pack, SourceLocation PackLoc,
1315 SourceLocation RParenLoc,
1316 Optional<unsigned> Length,
1317 ArrayRef<TemplateArgument> PartialArgs) {
1318 void *Storage =
1319 Context.Allocate(totalSizeToAlloc<TemplateArgument>(PartialArgs.size()));
1320 return new (Storage) SizeOfPackExpr(Context.getSizeType(), OperatorLoc, Pack,
1321 PackLoc, RParenLoc, Length, PartialArgs);
1322}
1323
1324SizeOfPackExpr *SizeOfPackExpr::CreateDeserialized(ASTContext &Context,
1325 unsigned NumPartialArgs) {
1326 void *Storage =
1327 Context.Allocate(totalSizeToAlloc<TemplateArgument>(NumPartialArgs));
1328 return new (Storage) SizeOfPackExpr(EmptyShell(), NumPartialArgs);
1329}
1330
1331SubstNonTypeTemplateParmPackExpr::
1332SubstNonTypeTemplateParmPackExpr(QualType T,
1333 ExprValueKind ValueKind,
1334 NonTypeTemplateParmDecl *Param,
1335 SourceLocation NameLoc,
1336 const TemplateArgument &ArgPack)
1337 : Expr(SubstNonTypeTemplateParmPackExprClass, T, ValueKind, OK_Ordinary,
1338 true, true, true, true),
1339 Param(Param), Arguments(ArgPack.pack_begin()),
1340 NumArguments(ArgPack.pack_size()), NameLoc(NameLoc) {}
1341
1342TemplateArgument SubstNonTypeTemplateParmPackExpr::getArgumentPack() const {
1343 return TemplateArgument(llvm::makeArrayRef(Arguments, NumArguments));
1344}
1345
1346FunctionParmPackExpr::FunctionParmPackExpr(QualType T, ParmVarDecl *ParamPack,
1347 SourceLocation NameLoc,
1348 unsigned NumParams,
1349 ParmVarDecl *const *Params)
1350 : Expr(FunctionParmPackExprClass, T, VK_LValue, OK_Ordinary, true, true,
1351 true, true),
1352 ParamPack(ParamPack), NameLoc(NameLoc), NumParameters(NumParams) {
1353 if (Params)
1354 std::uninitialized_copy(Params, Params + NumParams,
1355 getTrailingObjects<ParmVarDecl *>());
1356}
1357
1358FunctionParmPackExpr *
1359FunctionParmPackExpr::Create(const ASTContext &Context, QualType T,
1360 ParmVarDecl *ParamPack, SourceLocation NameLoc,
1361 ArrayRef<ParmVarDecl *> Params) {
1362 return new (Context.Allocate(totalSizeToAlloc<ParmVarDecl *>(Params.size())))
1363 FunctionParmPackExpr(T, ParamPack, NameLoc, Params.size(), Params.data());
1364}
1365
1366FunctionParmPackExpr *
1367FunctionParmPackExpr::CreateEmpty(const ASTContext &Context,
1368 unsigned NumParams) {
1369 return new (Context.Allocate(totalSizeToAlloc<ParmVarDecl *>(NumParams)))
1370 FunctionParmPackExpr(QualType(), nullptr, SourceLocation(), 0, nullptr);
1371}
1372
1373void MaterializeTemporaryExpr::setExtendingDecl(const ValueDecl *ExtendedBy,
1374 unsigned ManglingNumber) {
1375 // We only need extra state if we have to remember more than just the Stmt.
1376 if (!ExtendedBy)
1
Assuming 'ExtendedBy' is non-null
2
Taking false branch
1377 return;
1378
1379 // We may need to allocate extra storage for the mangling number and the
1380 // extended-by ValueDecl.
1381 if (!State.is<ExtraState *>()) {
3
Taking true branch
1382 auto ES = new (ExtendedBy->getASTContext()) ExtraState;
4
'ES' initialized to a null pointer value
1383 ES->Temporary = State.get<Stmt *>();
5
Access to field 'Temporary' results in a dereference of a null pointer (loaded from variable 'ES')
1384 State = ES;
1385 }
1386
1387 auto ES = State.get<ExtraState *>();
1388 ES->ExtendingDecl = ExtendedBy;
1389 ES->ManglingNumber = ManglingNumber;
1390}
1391
1392TypeTraitExpr::TypeTraitExpr(QualType T, SourceLocation Loc, TypeTrait Kind,
1393 ArrayRef<TypeSourceInfo *> Args,
1394 SourceLocation RParenLoc,
1395 bool Value)
1396 : Expr(TypeTraitExprClass, T, VK_RValue, OK_Ordinary,
1397 /*TypeDependent=*/false,
1398 /*ValueDependent=*/false,
1399 /*InstantiationDependent=*/false,
1400 /*ContainsUnexpandedParameterPack=*/false),
1401 Loc(Loc), RParenLoc(RParenLoc) {
1402 TypeTraitExprBits.Kind = Kind;
1403 TypeTraitExprBits.Value = Value;
1404 TypeTraitExprBits.NumArgs = Args.size();
1405
1406 TypeSourceInfo **ToArgs = getTrailingObjects<TypeSourceInfo *>();
1407
1408 for (unsigned I = 0, N = Args.size(); I != N; ++I) {
1409 if (Args[I]->getType()->isDependentType())
1410 setValueDependent(true);
1411 if (Args[I]->getType()->isInstantiationDependentType())
1412 setInstantiationDependent(true);
1413 if (Args[I]->getType()->containsUnexpandedParameterPack())
1414 setContainsUnexpandedParameterPack(true);
1415
1416 ToArgs[I] = Args[I];
1417 }
1418}
1419
1420TypeTraitExpr *TypeTraitExpr::Create(const ASTContext &C, QualType T,
1421 SourceLocation Loc,
1422 TypeTrait Kind,
1423 ArrayRef<TypeSourceInfo *> Args,
1424 SourceLocation RParenLoc,
1425 bool Value) {
1426 void *Mem = C.Allocate(totalSizeToAlloc<TypeSourceInfo *>(Args.size()));
1427 return new (Mem) TypeTraitExpr(T, Loc, Kind, Args, RParenLoc, Value);
1428}
1429
1430TypeTraitExpr *TypeTraitExpr::CreateDeserialized(const ASTContext &C,
1431 unsigned NumArgs) {
1432 void *Mem = C.Allocate(totalSizeToAlloc<TypeSourceInfo *>(NumArgs));
1433 return new (Mem) TypeTraitExpr(EmptyShell());
1434}
1435
1436void ArrayTypeTraitExpr::anchor() {}