Bug Summary

File:clang/lib/Serialization/ASTReaderDecl.cpp
Warning:line 2538, column 16
Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name ASTReaderDecl.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mframe-pointer=none -relaxed-aliasing -fmath-errno -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -ffunction-sections -fdata-sections -fcoverage-compilation-dir=/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/build-llvm -resource-dir /usr/lib/llvm-14/lib/clang/14.0.0 -D CLANG_ROUND_TRIP_CC1_ARGS=ON -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I tools/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/include -I tools/clang/include -I include -I /build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/llvm/include -D NDEBUG -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/x86_64-linux-gnu/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/backward -internal-isystem /usr/lib/llvm-14/lib/clang/14.0.0/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-command-line-argument -Wno-unknown-warning-option -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wno-comment -std=c++14 -fdeprecated-macro -fdebug-compilation-dir=/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/build-llvm -ferror-limit 19 -fvisibility-inlines-hidden -fgnuc-version=4.2.1 -fcolor-diagnostics -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2021-09-26-234817-15343-1 -x c++ /build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp
1//===- ASTReaderDecl.cpp - Decl Deserialization ---------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file implements the ASTReader::readDeclRecord method, which is the
10// entrypoint for loading a decl.
11//
12//===----------------------------------------------------------------------===//
13
14#include "ASTCommon.h"
15#include "ASTReaderInternals.h"
16#include "clang/AST/ASTContext.h"
17#include "clang/AST/Attr.h"
18#include "clang/AST/AttrIterator.h"
19#include "clang/AST/Decl.h"
20#include "clang/AST/DeclBase.h"
21#include "clang/AST/DeclCXX.h"
22#include "clang/AST/DeclFriend.h"
23#include "clang/AST/DeclObjC.h"
24#include "clang/AST/DeclOpenMP.h"
25#include "clang/AST/DeclTemplate.h"
26#include "clang/AST/DeclVisitor.h"
27#include "clang/AST/DeclarationName.h"
28#include "clang/AST/Expr.h"
29#include "clang/AST/ExternalASTSource.h"
30#include "clang/AST/LambdaCapture.h"
31#include "clang/AST/NestedNameSpecifier.h"
32#include "clang/AST/OpenMPClause.h"
33#include "clang/AST/Redeclarable.h"
34#include "clang/AST/Stmt.h"
35#include "clang/AST/TemplateBase.h"
36#include "clang/AST/Type.h"
37#include "clang/AST/UnresolvedSet.h"
38#include "clang/Basic/AttrKinds.h"
39#include "clang/Basic/ExceptionSpecificationType.h"
40#include "clang/Basic/IdentifierTable.h"
41#include "clang/Basic/LLVM.h"
42#include "clang/Basic/Lambda.h"
43#include "clang/Basic/LangOptions.h"
44#include "clang/Basic/Linkage.h"
45#include "clang/Basic/Module.h"
46#include "clang/Basic/PragmaKinds.h"
47#include "clang/Basic/SourceLocation.h"
48#include "clang/Basic/Specifiers.h"
49#include "clang/Sema/IdentifierResolver.h"
50#include "clang/Serialization/ASTBitCodes.h"
51#include "clang/Serialization/ASTRecordReader.h"
52#include "clang/Serialization/ContinuousRangeMap.h"
53#include "clang/Serialization/ModuleFile.h"
54#include "llvm/ADT/DenseMap.h"
55#include "llvm/ADT/FoldingSet.h"
56#include "llvm/ADT/STLExtras.h"
57#include "llvm/ADT/SmallPtrSet.h"
58#include "llvm/ADT/SmallVector.h"
59#include "llvm/ADT/iterator_range.h"
60#include "llvm/Bitstream/BitstreamReader.h"
61#include "llvm/Support/Casting.h"
62#include "llvm/Support/ErrorHandling.h"
63#include "llvm/Support/SaveAndRestore.h"
64#include <algorithm>
65#include <cassert>
66#include <cstdint>
67#include <cstring>
68#include <string>
69#include <utility>
70
71using namespace clang;
72using namespace serialization;
73
74//===----------------------------------------------------------------------===//
75// Declaration deserialization
76//===----------------------------------------------------------------------===//
77
78namespace clang {
79
80 class ASTDeclReader : public DeclVisitor<ASTDeclReader, void> {
81 ASTReader &Reader;
82 ASTRecordReader &Record;
83 ASTReader::RecordLocation Loc;
84 const DeclID ThisDeclID;
85 const SourceLocation ThisDeclLoc;
86
87 using RecordData = ASTReader::RecordData;
88
89 TypeID DeferredTypeID = 0;
90 unsigned AnonymousDeclNumber;
91 GlobalDeclID NamedDeclForTagDecl = 0;
92 IdentifierInfo *TypedefNameForLinkage = nullptr;
93
94 bool HasPendingBody = false;
95
96 ///A flag to carry the information for a decl from the entity is
97 /// used. We use it to delay the marking of the canonical decl as used until
98 /// the entire declaration is deserialized and merged.
99 bool IsDeclMarkedUsed = false;
100
101 uint64_t GetCurrentCursorOffset();
102
103 uint64_t ReadLocalOffset() {
104 uint64_t LocalOffset = Record.readInt();
105 assert(LocalOffset < Loc.Offset && "offset point after current record")(static_cast <bool> (LocalOffset < Loc.Offset &&
"offset point after current record") ? void (0) : __assert_fail
("LocalOffset < Loc.Offset && \"offset point after current record\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 105, __extension__ __PRETTY_FUNCTION__))
;
106 return LocalOffset ? Loc.Offset - LocalOffset : 0;
107 }
108
109 uint64_t ReadGlobalOffset() {
110 uint64_t Local = ReadLocalOffset();
111 return Local ? Record.getGlobalBitOffset(Local) : 0;
112 }
113
114 SourceLocation readSourceLocation() {
115 return Record.readSourceLocation();
116 }
117
118 SourceRange readSourceRange() {
119 return Record.readSourceRange();
120 }
121
122 TypeSourceInfo *readTypeSourceInfo() {
123 return Record.readTypeSourceInfo();
124 }
125
126 serialization::DeclID readDeclID() {
127 return Record.readDeclID();
128 }
129
130 std::string readString() {
131 return Record.readString();
132 }
133
134 void readDeclIDList(SmallVectorImpl<DeclID> &IDs) {
135 for (unsigned I = 0, Size = Record.readInt(); I != Size; ++I)
136 IDs.push_back(readDeclID());
137 }
138
139 Decl *readDecl() {
140 return Record.readDecl();
141 }
142
143 template<typename T>
144 T *readDeclAs() {
145 return Record.readDeclAs<T>();
146 }
147
148 serialization::SubmoduleID readSubmoduleID() {
149 if (Record.getIdx() == Record.size())
150 return 0;
151
152 return Record.getGlobalSubmoduleID(Record.readInt());
153 }
154
155 Module *readModule() {
156 return Record.getSubmodule(readSubmoduleID());
157 }
158
159 void ReadCXXRecordDefinition(CXXRecordDecl *D, bool Update);
160 void ReadCXXDefinitionData(struct CXXRecordDecl::DefinitionData &Data,
161 const CXXRecordDecl *D);
162 void MergeDefinitionData(CXXRecordDecl *D,
163 struct CXXRecordDecl::DefinitionData &&NewDD);
164 void ReadObjCDefinitionData(struct ObjCInterfaceDecl::DefinitionData &Data);
165 void MergeDefinitionData(ObjCInterfaceDecl *D,
166 struct ObjCInterfaceDecl::DefinitionData &&NewDD);
167 void ReadObjCDefinitionData(struct ObjCProtocolDecl::DefinitionData &Data);
168 void MergeDefinitionData(ObjCProtocolDecl *D,
169 struct ObjCProtocolDecl::DefinitionData &&NewDD);
170
171 static DeclContext *getPrimaryDCForAnonymousDecl(DeclContext *LexicalDC);
172
173 static NamedDecl *getAnonymousDeclForMerging(ASTReader &Reader,
174 DeclContext *DC,
175 unsigned Index);
176 static void setAnonymousDeclForMerging(ASTReader &Reader, DeclContext *DC,
177 unsigned Index, NamedDecl *D);
178
179 /// Results from loading a RedeclarableDecl.
180 class RedeclarableResult {
181 Decl *MergeWith;
182 GlobalDeclID FirstID;
183 bool IsKeyDecl;
184
185 public:
186 RedeclarableResult(Decl *MergeWith, GlobalDeclID FirstID, bool IsKeyDecl)
187 : MergeWith(MergeWith), FirstID(FirstID), IsKeyDecl(IsKeyDecl) {}
188
189 /// Retrieve the first ID.
190 GlobalDeclID getFirstID() const { return FirstID; }
191
192 /// Is this declaration a key declaration?
193 bool isKeyDecl() const { return IsKeyDecl; }
194
195 /// Get a known declaration that this should be merged with, if
196 /// any.
197 Decl *getKnownMergeTarget() const { return MergeWith; }
198 };
199
200 /// Class used to capture the result of searching for an existing
201 /// declaration of a specific kind and name, along with the ability
202 /// to update the place where this result was found (the declaration
203 /// chain hanging off an identifier or the DeclContext we searched in)
204 /// if requested.
205 class FindExistingResult {
206 ASTReader &Reader;
207 NamedDecl *New = nullptr;
208 NamedDecl *Existing = nullptr;
209 bool AddResult = false;
210 unsigned AnonymousDeclNumber = 0;
211 IdentifierInfo *TypedefNameForLinkage = nullptr;
212
213 public:
214 FindExistingResult(ASTReader &Reader) : Reader(Reader) {}
215
216 FindExistingResult(ASTReader &Reader, NamedDecl *New, NamedDecl *Existing,
217 unsigned AnonymousDeclNumber,
218 IdentifierInfo *TypedefNameForLinkage)
219 : Reader(Reader), New(New), Existing(Existing), AddResult(true),
220 AnonymousDeclNumber(AnonymousDeclNumber),
221 TypedefNameForLinkage(TypedefNameForLinkage) {}
222
223 FindExistingResult(FindExistingResult &&Other)
224 : Reader(Other.Reader), New(Other.New), Existing(Other.Existing),
225 AddResult(Other.AddResult),
226 AnonymousDeclNumber(Other.AnonymousDeclNumber),
227 TypedefNameForLinkage(Other.TypedefNameForLinkage) {
228 Other.AddResult = false;
229 }
230
231 FindExistingResult &operator=(FindExistingResult &&) = delete;
232 ~FindExistingResult();
233
234 /// Suppress the addition of this result into the known set of
235 /// names.
236 void suppress() { AddResult = false; }
237
238 operator NamedDecl*() const { return Existing; }
239
240 template<typename T>
241 operator T*() const { return dyn_cast_or_null<T>(Existing); }
242 };
243
244 static DeclContext *getPrimaryContextForMerging(ASTReader &Reader,
245 DeclContext *DC);
246 FindExistingResult findExisting(NamedDecl *D);
247
248 public:
249 ASTDeclReader(ASTReader &Reader, ASTRecordReader &Record,
250 ASTReader::RecordLocation Loc,
251 DeclID thisDeclID, SourceLocation ThisDeclLoc)
252 : Reader(Reader), Record(Record), Loc(Loc), ThisDeclID(thisDeclID),
253 ThisDeclLoc(ThisDeclLoc) {}
254
255 template <typename T> static
256 void AddLazySpecializations(T *D,
257 SmallVectorImpl<serialization::DeclID>& IDs) {
258 if (IDs.empty())
259 return;
260
261 // FIXME: We should avoid this pattern of getting the ASTContext.
262 ASTContext &C = D->getASTContext();
263
264 auto *&LazySpecializations = D->getCommonPtr()->LazySpecializations;
265
266 if (auto &Old = LazySpecializations) {
267 IDs.insert(IDs.end(), Old + 1, Old + 1 + Old[0]);
268 llvm::sort(IDs);
269 IDs.erase(std::unique(IDs.begin(), IDs.end()), IDs.end());
270 }
271
272 auto *Result = new (C) serialization::DeclID[1 + IDs.size()];
273 *Result = IDs.size();
274 std::copy(IDs.begin(), IDs.end(), Result + 1);
275
276 LazySpecializations = Result;
277 }
278
279 template <typename DeclT>
280 static Decl *getMostRecentDeclImpl(Redeclarable<DeclT> *D);
281 static Decl *getMostRecentDeclImpl(...);
282 static Decl *getMostRecentDecl(Decl *D);
283
284 static void mergeInheritableAttributes(ASTReader &Reader, Decl *D,
285 Decl *Previous);
286
287 template <typename DeclT>
288 static void attachPreviousDeclImpl(ASTReader &Reader,
289 Redeclarable<DeclT> *D, Decl *Previous,
290 Decl *Canon);
291 static void attachPreviousDeclImpl(ASTReader &Reader, ...);
292 static void attachPreviousDecl(ASTReader &Reader, Decl *D, Decl *Previous,
293 Decl *Canon);
294
295 template <typename DeclT>
296 static void attachLatestDeclImpl(Redeclarable<DeclT> *D, Decl *Latest);
297 static void attachLatestDeclImpl(...);
298 static void attachLatestDecl(Decl *D, Decl *latest);
299
300 template <typename DeclT>
301 static void markIncompleteDeclChainImpl(Redeclarable<DeclT> *D);
302 static void markIncompleteDeclChainImpl(...);
303
304 /// Determine whether this declaration has a pending body.
305 bool hasPendingBody() const { return HasPendingBody; }
306
307 void ReadFunctionDefinition(FunctionDecl *FD);
308 void Visit(Decl *D);
309
310 void UpdateDecl(Decl *D, SmallVectorImpl<serialization::DeclID> &);
311
312 static void setNextObjCCategory(ObjCCategoryDecl *Cat,
313 ObjCCategoryDecl *Next) {
314 Cat->NextClassCategory = Next;
315 }
316
317 void VisitDecl(Decl *D);
318 void VisitPragmaCommentDecl(PragmaCommentDecl *D);
319 void VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl *D);
320 void VisitTranslationUnitDecl(TranslationUnitDecl *TU);
321 void VisitNamedDecl(NamedDecl *ND);
322 void VisitLabelDecl(LabelDecl *LD);
323 void VisitNamespaceDecl(NamespaceDecl *D);
324 void VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
325 void VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
326 void VisitTypeDecl(TypeDecl *TD);
327 RedeclarableResult VisitTypedefNameDecl(TypedefNameDecl *TD);
328 void VisitTypedefDecl(TypedefDecl *TD);
329 void VisitTypeAliasDecl(TypeAliasDecl *TD);
330 void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
331 void VisitUnresolvedUsingIfExistsDecl(UnresolvedUsingIfExistsDecl *D);
332 RedeclarableResult VisitTagDecl(TagDecl *TD);
333 void VisitEnumDecl(EnumDecl *ED);
334 RedeclarableResult VisitRecordDeclImpl(RecordDecl *RD);
335 void VisitRecordDecl(RecordDecl *RD);
336 RedeclarableResult VisitCXXRecordDeclImpl(CXXRecordDecl *D);
337 void VisitCXXRecordDecl(CXXRecordDecl *D) { VisitCXXRecordDeclImpl(D); }
338 RedeclarableResult VisitClassTemplateSpecializationDeclImpl(
339 ClassTemplateSpecializationDecl *D);
340
341 void VisitClassTemplateSpecializationDecl(
342 ClassTemplateSpecializationDecl *D) {
343 VisitClassTemplateSpecializationDeclImpl(D);
344 }
345
346 void VisitClassTemplatePartialSpecializationDecl(
347 ClassTemplatePartialSpecializationDecl *D);
348 void VisitClassScopeFunctionSpecializationDecl(
349 ClassScopeFunctionSpecializationDecl *D);
350 RedeclarableResult
351 VisitVarTemplateSpecializationDeclImpl(VarTemplateSpecializationDecl *D);
352
353 void VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D) {
354 VisitVarTemplateSpecializationDeclImpl(D);
355 }
356
357 void VisitVarTemplatePartialSpecializationDecl(
358 VarTemplatePartialSpecializationDecl *D);
359 void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D);
360 void VisitValueDecl(ValueDecl *VD);
361 void VisitEnumConstantDecl(EnumConstantDecl *ECD);
362 void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
363 void VisitDeclaratorDecl(DeclaratorDecl *DD);
364 void VisitFunctionDecl(FunctionDecl *FD);
365 void VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *GD);
366 void VisitCXXMethodDecl(CXXMethodDecl *D);
367 void VisitCXXConstructorDecl(CXXConstructorDecl *D);
368 void VisitCXXDestructorDecl(CXXDestructorDecl *D);
369 void VisitCXXConversionDecl(CXXConversionDecl *D);
370 void VisitFieldDecl(FieldDecl *FD);
371 void VisitMSPropertyDecl(MSPropertyDecl *FD);
372 void VisitMSGuidDecl(MSGuidDecl *D);
373 void VisitTemplateParamObjectDecl(TemplateParamObjectDecl *D);
374 void VisitIndirectFieldDecl(IndirectFieldDecl *FD);
375 RedeclarableResult VisitVarDeclImpl(VarDecl *D);
376 void VisitVarDecl(VarDecl *VD) { VisitVarDeclImpl(VD); }
377 void VisitImplicitParamDecl(ImplicitParamDecl *PD);
378 void VisitParmVarDecl(ParmVarDecl *PD);
379 void VisitDecompositionDecl(DecompositionDecl *DD);
380 void VisitBindingDecl(BindingDecl *BD);
381 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
382 DeclID VisitTemplateDecl(TemplateDecl *D);
383 void VisitConceptDecl(ConceptDecl *D);
384 void VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D);
385 RedeclarableResult VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D);
386 void VisitClassTemplateDecl(ClassTemplateDecl *D);
387 void VisitBuiltinTemplateDecl(BuiltinTemplateDecl *D);
388 void VisitVarTemplateDecl(VarTemplateDecl *D);
389 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
390 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
391 void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D);
392 void VisitUsingDecl(UsingDecl *D);
393 void VisitUsingEnumDecl(UsingEnumDecl *D);
394 void VisitUsingPackDecl(UsingPackDecl *D);
395 void VisitUsingShadowDecl(UsingShadowDecl *D);
396 void VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl *D);
397 void VisitLinkageSpecDecl(LinkageSpecDecl *D);
398 void VisitExportDecl(ExportDecl *D);
399 void VisitFileScopeAsmDecl(FileScopeAsmDecl *AD);
400 void VisitImportDecl(ImportDecl *D);
401 void VisitAccessSpecDecl(AccessSpecDecl *D);
402 void VisitFriendDecl(FriendDecl *D);
403 void VisitFriendTemplateDecl(FriendTemplateDecl *D);
404 void VisitStaticAssertDecl(StaticAssertDecl *D);
405 void VisitBlockDecl(BlockDecl *BD);
406 void VisitCapturedDecl(CapturedDecl *CD);
407 void VisitEmptyDecl(EmptyDecl *D);
408 void VisitLifetimeExtendedTemporaryDecl(LifetimeExtendedTemporaryDecl *D);
409
410 std::pair<uint64_t, uint64_t> VisitDeclContext(DeclContext *DC);
411
412 template<typename T>
413 RedeclarableResult VisitRedeclarable(Redeclarable<T> *D);
414
415 template<typename T>
416 void mergeRedeclarable(Redeclarable<T> *D, RedeclarableResult &Redecl,
417 DeclID TemplatePatternID = 0);
418
419 template<typename T>
420 void mergeRedeclarable(Redeclarable<T> *D, T *Existing,
421 RedeclarableResult &Redecl,
422 DeclID TemplatePatternID = 0);
423
424 template<typename T>
425 void mergeMergeable(Mergeable<T> *D);
426
427 void mergeMergeable(LifetimeExtendedTemporaryDecl *D);
428
429 void mergeTemplatePattern(RedeclarableTemplateDecl *D,
430 RedeclarableTemplateDecl *Existing,
431 DeclID DsID, bool IsKeyDecl);
432
433 ObjCTypeParamList *ReadObjCTypeParamList();
434
435 // FIXME: Reorder according to DeclNodes.td?
436 void VisitObjCMethodDecl(ObjCMethodDecl *D);
437 void VisitObjCTypeParamDecl(ObjCTypeParamDecl *D);
438 void VisitObjCContainerDecl(ObjCContainerDecl *D);
439 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
440 void VisitObjCIvarDecl(ObjCIvarDecl *D);
441 void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
442 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D);
443 void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
444 void VisitObjCImplDecl(ObjCImplDecl *D);
445 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
446 void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
447 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
448 void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
449 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
450 void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D);
451 void VisitOMPAllocateDecl(OMPAllocateDecl *D);
452 void VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D);
453 void VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D);
454 void VisitOMPRequiresDecl(OMPRequiresDecl *D);
455 void VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D);
456 };
457
458} // namespace clang
459
460namespace {
461
462/// Iterator over the redeclarations of a declaration that have already
463/// been merged into the same redeclaration chain.
464template<typename DeclT>
465class MergedRedeclIterator {
466 DeclT *Start;
467 DeclT *Canonical = nullptr;
468 DeclT *Current = nullptr;
469
470public:
471 MergedRedeclIterator() = default;
472 MergedRedeclIterator(DeclT *Start) : Start(Start), Current(Start) {}
473
474 DeclT *operator*() { return Current; }
475
476 MergedRedeclIterator &operator++() {
477 if (Current->isFirstDecl()) {
478 Canonical = Current;
479 Current = Current->getMostRecentDecl();
480 } else
481 Current = Current->getPreviousDecl();
482
483 // If we started in the merged portion, we'll reach our start position
484 // eventually. Otherwise, we'll never reach it, but the second declaration
485 // we reached was the canonical declaration, so stop when we see that one
486 // again.
487 if (Current == Start || Current == Canonical)
488 Current = nullptr;
489 return *this;
490 }
491
492 friend bool operator!=(const MergedRedeclIterator &A,
493 const MergedRedeclIterator &B) {
494 return A.Current != B.Current;
495 }
496};
497
498} // namespace
499
500template <typename DeclT>
501static llvm::iterator_range<MergedRedeclIterator<DeclT>>
502merged_redecls(DeclT *D) {
503 return llvm::make_range(MergedRedeclIterator<DeclT>(D),
504 MergedRedeclIterator<DeclT>());
505}
506
507uint64_t ASTDeclReader::GetCurrentCursorOffset() {
508 return Loc.F->DeclsCursor.GetCurrentBitNo() + Loc.F->GlobalBitOffset;
509}
510
511void ASTDeclReader::ReadFunctionDefinition(FunctionDecl *FD) {
512 if (Record.readInt()) {
513 Reader.DefinitionSource[FD] =
514 Loc.F->Kind == ModuleKind::MK_MainFile ||
515 Reader.getContext().getLangOpts().BuildingPCHWithObjectFile;
516 }
517 if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) {
518 CD->setNumCtorInitializers(Record.readInt());
519 if (CD->getNumCtorInitializers())
520 CD->CtorInitializers = ReadGlobalOffset();
521 }
522 // Store the offset of the body so we can lazily load it later.
523 Reader.PendingBodies[FD] = GetCurrentCursorOffset();
524 HasPendingBody = true;
525}
526
527void ASTDeclReader::Visit(Decl *D) {
528 DeclVisitor<ASTDeclReader, void>::Visit(D);
529
530 // At this point we have deserialized and merged the decl and it is safe to
531 // update its canonical decl to signal that the entire entity is used.
532 D->getCanonicalDecl()->Used |= IsDeclMarkedUsed;
533 IsDeclMarkedUsed = false;
534
535 if (auto *DD = dyn_cast<DeclaratorDecl>(D)) {
536 if (auto *TInfo = DD->getTypeSourceInfo())
537 Record.readTypeLoc(TInfo->getTypeLoc());
538 }
539
540 if (auto *TD = dyn_cast<TypeDecl>(D)) {
541 // We have a fully initialized TypeDecl. Read its type now.
542 TD->setTypeForDecl(Reader.GetType(DeferredTypeID).getTypePtrOrNull());
543
544 // If this is a tag declaration with a typedef name for linkage, it's safe
545 // to load that typedef now.
546 if (NamedDeclForTagDecl)
547 cast<TagDecl>(D)->TypedefNameDeclOrQualifier =
548 cast<TypedefNameDecl>(Reader.GetDecl(NamedDeclForTagDecl));
549 } else if (auto *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
550 // if we have a fully initialized TypeDecl, we can safely read its type now.
551 ID->TypeForDecl = Reader.GetType(DeferredTypeID).getTypePtrOrNull();
552 } else if (auto *FD = dyn_cast<FunctionDecl>(D)) {
553 // FunctionDecl's body was written last after all other Stmts/Exprs.
554 // We only read it if FD doesn't already have a body (e.g., from another
555 // module).
556 // FIXME: Can we diagnose ODR violations somehow?
557 if (Record.readInt())
558 ReadFunctionDefinition(FD);
559 }
560}
561
562void ASTDeclReader::VisitDecl(Decl *D) {
563 if (D->isTemplateParameter() || D->isTemplateParameterPack() ||
564 isa<ParmVarDecl>(D) || isa<ObjCTypeParamDecl>(D)) {
565 // We don't want to deserialize the DeclContext of a template
566 // parameter or of a parameter of a function template immediately. These
567 // entities might be used in the formulation of its DeclContext (for
568 // example, a function parameter can be used in decltype() in trailing
569 // return type of the function). Use the translation unit DeclContext as a
570 // placeholder.
571 GlobalDeclID SemaDCIDForTemplateParmDecl = readDeclID();
572 GlobalDeclID LexicalDCIDForTemplateParmDecl = readDeclID();
573 if (!LexicalDCIDForTemplateParmDecl)
574 LexicalDCIDForTemplateParmDecl = SemaDCIDForTemplateParmDecl;
575 Reader.addPendingDeclContextInfo(D,
576 SemaDCIDForTemplateParmDecl,
577 LexicalDCIDForTemplateParmDecl);
578 D->setDeclContext(Reader.getContext().getTranslationUnitDecl());
579 } else {
580 auto *SemaDC = readDeclAs<DeclContext>();
581 auto *LexicalDC = readDeclAs<DeclContext>();
582 if (!LexicalDC)
583 LexicalDC = SemaDC;
584 DeclContext *MergedSemaDC = Reader.MergedDeclContexts.lookup(SemaDC);
585 // Avoid calling setLexicalDeclContext() directly because it uses
586 // Decl::getASTContext() internally which is unsafe during derialization.
587 D->setDeclContextsImpl(MergedSemaDC ? MergedSemaDC : SemaDC, LexicalDC,
588 Reader.getContext());
589 }
590 D->setLocation(ThisDeclLoc);
591 D->InvalidDecl = Record.readInt();
592 if (Record.readInt()) { // hasAttrs
593 AttrVec Attrs;
594 Record.readAttributes(Attrs);
595 // Avoid calling setAttrs() directly because it uses Decl::getASTContext()
596 // internally which is unsafe during derialization.
597 D->setAttrsImpl(Attrs, Reader.getContext());
598 }
599 D->setImplicit(Record.readInt());
600 D->Used = Record.readInt();
601 IsDeclMarkedUsed |= D->Used;
602 D->setReferenced(Record.readInt());
603 D->setTopLevelDeclInObjCContainer(Record.readInt());
604 D->setAccess((AccessSpecifier)Record.readInt());
605 D->FromASTFile = true;
606 bool ModulePrivate = Record.readInt();
607
608 // Determine whether this declaration is part of a (sub)module. If so, it
609 // may not yet be visible.
610 if (unsigned SubmoduleID = readSubmoduleID()) {
611 // Store the owning submodule ID in the declaration.
612 D->setModuleOwnershipKind(
613 ModulePrivate ? Decl::ModuleOwnershipKind::ModulePrivate
614 : Decl::ModuleOwnershipKind::VisibleWhenImported);
615 D->setOwningModuleID(SubmoduleID);
616
617 if (ModulePrivate) {
618 // Module-private declarations are never visible, so there is no work to
619 // do.
620 } else if (Reader.getContext().getLangOpts().ModulesLocalVisibility) {
621 // If local visibility is being tracked, this declaration will become
622 // hidden and visible as the owning module does.
623 } else if (Module *Owner = Reader.getSubmodule(SubmoduleID)) {
624 // Mark the declaration as visible when its owning module becomes visible.
625 if (Owner->NameVisibility == Module::AllVisible)
626 D->setVisibleDespiteOwningModule();
627 else
628 Reader.HiddenNamesMap[Owner].push_back(D);
629 }
630 } else if (ModulePrivate) {
631 D->setModuleOwnershipKind(Decl::ModuleOwnershipKind::ModulePrivate);
632 }
633}
634
635void ASTDeclReader::VisitPragmaCommentDecl(PragmaCommentDecl *D) {
636 VisitDecl(D);
637 D->setLocation(readSourceLocation());
638 D->CommentKind = (PragmaMSCommentKind)Record.readInt();
639 std::string Arg = readString();
640 memcpy(D->getTrailingObjects<char>(), Arg.data(), Arg.size());
641 D->getTrailingObjects<char>()[Arg.size()] = '\0';
642}
643
644void ASTDeclReader::VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl *D) {
645 VisitDecl(D);
646 D->setLocation(readSourceLocation());
647 std::string Name = readString();
648 memcpy(D->getTrailingObjects<char>(), Name.data(), Name.size());
649 D->getTrailingObjects<char>()[Name.size()] = '\0';
650
651 D->ValueStart = Name.size() + 1;
652 std::string Value = readString();
653 memcpy(D->getTrailingObjects<char>() + D->ValueStart, Value.data(),
654 Value.size());
655 D->getTrailingObjects<char>()[D->ValueStart + Value.size()] = '\0';
656}
657
658void ASTDeclReader::VisitTranslationUnitDecl(TranslationUnitDecl *TU) {
659 llvm_unreachable("Translation units are not serialized")::llvm::llvm_unreachable_internal("Translation units are not serialized"
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 659)
;
660}
661
662void ASTDeclReader::VisitNamedDecl(NamedDecl *ND) {
663 VisitDecl(ND);
664 ND->setDeclName(Record.readDeclarationName());
665 AnonymousDeclNumber = Record.readInt();
666}
667
668void ASTDeclReader::VisitTypeDecl(TypeDecl *TD) {
669 VisitNamedDecl(TD);
670 TD->setLocStart(readSourceLocation());
671 // Delay type reading until after we have fully initialized the decl.
672 DeferredTypeID = Record.getGlobalTypeID(Record.readInt());
673}
674
675ASTDeclReader::RedeclarableResult
676ASTDeclReader::VisitTypedefNameDecl(TypedefNameDecl *TD) {
677 RedeclarableResult Redecl = VisitRedeclarable(TD);
678 VisitTypeDecl(TD);
679 TypeSourceInfo *TInfo = readTypeSourceInfo();
680 if (Record.readInt()) { // isModed
681 QualType modedT = Record.readType();
682 TD->setModedTypeSourceInfo(TInfo, modedT);
683 } else
684 TD->setTypeSourceInfo(TInfo);
685 // Read and discard the declaration for which this is a typedef name for
686 // linkage, if it exists. We cannot rely on our type to pull in this decl,
687 // because it might have been merged with a type from another module and
688 // thus might not refer to our version of the declaration.
689 readDecl();
690 return Redecl;
691}
692
693void ASTDeclReader::VisitTypedefDecl(TypedefDecl *TD) {
694 RedeclarableResult Redecl = VisitTypedefNameDecl(TD);
695 mergeRedeclarable(TD, Redecl);
696}
697
698void ASTDeclReader::VisitTypeAliasDecl(TypeAliasDecl *TD) {
699 RedeclarableResult Redecl = VisitTypedefNameDecl(TD);
700 if (auto *Template = readDeclAs<TypeAliasTemplateDecl>())
701 // Merged when we merge the template.
702 TD->setDescribedAliasTemplate(Template);
703 else
704 mergeRedeclarable(TD, Redecl);
705}
706
707ASTDeclReader::RedeclarableResult ASTDeclReader::VisitTagDecl(TagDecl *TD) {
708 RedeclarableResult Redecl = VisitRedeclarable(TD);
709 VisitTypeDecl(TD);
710
711 TD->IdentifierNamespace = Record.readInt();
712 TD->setTagKind((TagDecl::TagKind)Record.readInt());
713 if (!isa<CXXRecordDecl>(TD))
714 TD->setCompleteDefinition(Record.readInt());
715 TD->setEmbeddedInDeclarator(Record.readInt());
716 TD->setFreeStanding(Record.readInt());
717 TD->setCompleteDefinitionRequired(Record.readInt());
718 TD->setBraceRange(readSourceRange());
719
720 switch (Record.readInt()) {
721 case 0:
722 break;
723 case 1: { // ExtInfo
724 auto *Info = new (Reader.getContext()) TagDecl::ExtInfo();
725 Record.readQualifierInfo(*Info);
726 TD->TypedefNameDeclOrQualifier = Info;
727 break;
728 }
729 case 2: // TypedefNameForAnonDecl
730 NamedDeclForTagDecl = readDeclID();
731 TypedefNameForLinkage = Record.readIdentifier();
732 break;
733 default:
734 llvm_unreachable("unexpected tag info kind")::llvm::llvm_unreachable_internal("unexpected tag info kind",
"/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 734)
;
735 }
736
737 if (!isa<CXXRecordDecl>(TD))
738 mergeRedeclarable(TD, Redecl);
739 return Redecl;
740}
741
742void ASTDeclReader::VisitEnumDecl(EnumDecl *ED) {
743 VisitTagDecl(ED);
744 if (TypeSourceInfo *TI = readTypeSourceInfo())
745 ED->setIntegerTypeSourceInfo(TI);
746 else
747 ED->setIntegerType(Record.readType());
748 ED->setPromotionType(Record.readType());
749 ED->setNumPositiveBits(Record.readInt());
750 ED->setNumNegativeBits(Record.readInt());
751 ED->setScoped(Record.readInt());
752 ED->setScopedUsingClassTag(Record.readInt());
753 ED->setFixed(Record.readInt());
754
755 ED->setHasODRHash(true);
756 ED->ODRHash = Record.readInt();
757
758 // If this is a definition subject to the ODR, and we already have a
759 // definition, merge this one into it.
760 if (ED->isCompleteDefinition() &&
761 Reader.getContext().getLangOpts().Modules &&
762 Reader.getContext().getLangOpts().CPlusPlus) {
763 EnumDecl *&OldDef = Reader.EnumDefinitions[ED->getCanonicalDecl()];
764 if (!OldDef) {
765 // This is the first time we've seen an imported definition. Look for a
766 // local definition before deciding that we are the first definition.
767 for (auto *D : merged_redecls(ED->getCanonicalDecl())) {
768 if (!D->isFromASTFile() && D->isCompleteDefinition()) {
769 OldDef = D;
770 break;
771 }
772 }
773 }
774 if (OldDef) {
775 Reader.MergedDeclContexts.insert(std::make_pair(ED, OldDef));
776 ED->setCompleteDefinition(false);
777 Reader.mergeDefinitionVisibility(OldDef, ED);
778 if (OldDef->getODRHash() != ED->getODRHash())
779 Reader.PendingEnumOdrMergeFailures[OldDef].push_back(ED);
780 } else {
781 OldDef = ED;
782 }
783 }
784
785 if (auto *InstED = readDeclAs<EnumDecl>()) {
786 auto TSK = (TemplateSpecializationKind)Record.readInt();
787 SourceLocation POI = readSourceLocation();
788 ED->setInstantiationOfMemberEnum(Reader.getContext(), InstED, TSK);
789 ED->getMemberSpecializationInfo()->setPointOfInstantiation(POI);
790 }
791}
792
793ASTDeclReader::RedeclarableResult
794ASTDeclReader::VisitRecordDeclImpl(RecordDecl *RD) {
795 RedeclarableResult Redecl = VisitTagDecl(RD);
796 RD->setHasFlexibleArrayMember(Record.readInt());
797 RD->setAnonymousStructOrUnion(Record.readInt());
798 RD->setHasObjectMember(Record.readInt());
799 RD->setHasVolatileMember(Record.readInt());
800 RD->setNonTrivialToPrimitiveDefaultInitialize(Record.readInt());
801 RD->setNonTrivialToPrimitiveCopy(Record.readInt());
802 RD->setNonTrivialToPrimitiveDestroy(Record.readInt());
803 RD->setHasNonTrivialToPrimitiveDefaultInitializeCUnion(Record.readInt());
804 RD->setHasNonTrivialToPrimitiveDestructCUnion(Record.readInt());
805 RD->setHasNonTrivialToPrimitiveCopyCUnion(Record.readInt());
806 RD->setParamDestroyedInCallee(Record.readInt());
807 RD->setArgPassingRestrictions((RecordDecl::ArgPassingKind)Record.readInt());
808 return Redecl;
809}
810
811void ASTDeclReader::VisitRecordDecl(RecordDecl *RD) {
812 VisitRecordDeclImpl(RD);
813
814 // Maintain the invariant of a redeclaration chain containing only
815 // a single definition.
816 if (RD->isCompleteDefinition()) {
817 RecordDecl *Canon = static_cast<RecordDecl *>(RD->getCanonicalDecl());
818 RecordDecl *&OldDef = Reader.RecordDefinitions[Canon];
819 if (!OldDef) {
820 // This is the first time we've seen an imported definition. Look for a
821 // local definition before deciding that we are the first definition.
822 for (auto *D : merged_redecls(Canon)) {
823 if (!D->isFromASTFile() && D->isCompleteDefinition()) {
824 OldDef = D;
825 break;
826 }
827 }
828 }
829 if (OldDef) {
830 Reader.MergedDeclContexts.insert(std::make_pair(RD, OldDef));
831 RD->setCompleteDefinition(false);
832 Reader.mergeDefinitionVisibility(OldDef, RD);
833 } else {
834 OldDef = RD;
835 }
836 }
837}
838
839void ASTDeclReader::VisitValueDecl(ValueDecl *VD) {
840 VisitNamedDecl(VD);
841 // For function declarations, defer reading the type in case the function has
842 // a deduced return type that references an entity declared within the
843 // function.
844 if (isa<FunctionDecl>(VD))
845 DeferredTypeID = Record.getGlobalTypeID(Record.readInt());
846 else
847 VD->setType(Record.readType());
848}
849
850void ASTDeclReader::VisitEnumConstantDecl(EnumConstantDecl *ECD) {
851 VisitValueDecl(ECD);
852 if (Record.readInt())
853 ECD->setInitExpr(Record.readExpr());
854 ECD->setInitVal(Record.readAPSInt());
855 mergeMergeable(ECD);
856}
857
858void ASTDeclReader::VisitDeclaratorDecl(DeclaratorDecl *DD) {
859 VisitValueDecl(DD);
860 DD->setInnerLocStart(readSourceLocation());
861 if (Record.readInt()) { // hasExtInfo
862 auto *Info = new (Reader.getContext()) DeclaratorDecl::ExtInfo();
863 Record.readQualifierInfo(*Info);
864 Info->TrailingRequiresClause = Record.readExpr();
865 DD->DeclInfo = Info;
866 }
867 QualType TSIType = Record.readType();
868 DD->setTypeSourceInfo(
869 TSIType.isNull() ? nullptr
870 : Reader.getContext().CreateTypeSourceInfo(TSIType));
871}
872
873void ASTDeclReader::VisitFunctionDecl(FunctionDecl *FD) {
874 RedeclarableResult Redecl = VisitRedeclarable(FD);
875 VisitDeclaratorDecl(FD);
876
877 // Attach a type to this function. Use the real type if possible, but fall
878 // back to the type as written if it involves a deduced return type.
879 if (FD->getTypeSourceInfo() &&
880 FD->getTypeSourceInfo()->getType()->castAs<FunctionType>()
881 ->getReturnType()->getContainedAutoType()) {
882 // We'll set up the real type in Visit, once we've finished loading the
883 // function.
884 FD->setType(FD->getTypeSourceInfo()->getType());
885 Reader.PendingFunctionTypes.push_back({FD, DeferredTypeID});
886 } else {
887 FD->setType(Reader.GetType(DeferredTypeID));
888 }
889 DeferredTypeID = 0;
890
891 FD->DNLoc = Record.readDeclarationNameLoc(FD->getDeclName());
892 FD->IdentifierNamespace = Record.readInt();
893
894 // FunctionDecl's body is handled last at ASTDeclReader::Visit,
895 // after everything else is read.
896
897 FD->setStorageClass(static_cast<StorageClass>(Record.readInt()));
898 FD->setInlineSpecified(Record.readInt());
899 FD->setImplicitlyInline(Record.readInt());
900 FD->setVirtualAsWritten(Record.readInt());
901 // We defer calling `FunctionDecl::setPure()` here as for methods of
902 // `CXXTemplateSpecializationDecl`s, we may not have connected up the
903 // definition (which is required for `setPure`).
904 const bool Pure = Record.readInt();
905 FD->setHasInheritedPrototype(Record.readInt());
906 FD->setHasWrittenPrototype(Record.readInt());
907 FD->setDeletedAsWritten(Record.readInt());
908 FD->setTrivial(Record.readInt());
909 FD->setTrivialForCall(Record.readInt());
910 FD->setDefaulted(Record.readInt());
911 FD->setExplicitlyDefaulted(Record.readInt());
912 FD->setHasImplicitReturnZero(Record.readInt());
913 FD->setConstexprKind(static_cast<ConstexprSpecKind>(Record.readInt()));
914 FD->setUsesSEHTry(Record.readInt());
915 FD->setHasSkippedBody(Record.readInt());
916 FD->setIsMultiVersion(Record.readInt());
917 FD->setLateTemplateParsed(Record.readInt());
918
919 FD->setCachedLinkage(static_cast<Linkage>(Record.readInt()));
920 FD->EndRangeLoc = readSourceLocation();
921
922 FD->ODRHash = Record.readInt();
923 FD->setHasODRHash(true);
924
925 if (FD->isDefaulted()) {
926 if (unsigned NumLookups = Record.readInt()) {
927 SmallVector<DeclAccessPair, 8> Lookups;
928 for (unsigned I = 0; I != NumLookups; ++I) {
929 NamedDecl *ND = Record.readDeclAs<NamedDecl>();
930 AccessSpecifier AS = (AccessSpecifier)Record.readInt();
931 Lookups.push_back(DeclAccessPair::make(ND, AS));
932 }
933 FD->setDefaultedFunctionInfo(FunctionDecl::DefaultedFunctionInfo::Create(
934 Reader.getContext(), Lookups));
935 }
936 }
937
938 switch ((FunctionDecl::TemplatedKind)Record.readInt()) {
939 case FunctionDecl::TK_NonTemplate:
940 mergeRedeclarable(FD, Redecl);
941 break;
942 case FunctionDecl::TK_FunctionTemplate:
943 // Merged when we merge the template.
944 FD->setDescribedFunctionTemplate(readDeclAs<FunctionTemplateDecl>());
945 break;
946 case FunctionDecl::TK_MemberSpecialization: {
947 auto *InstFD = readDeclAs<FunctionDecl>();
948 auto TSK = (TemplateSpecializationKind)Record.readInt();
949 SourceLocation POI = readSourceLocation();
950 FD->setInstantiationOfMemberFunction(Reader.getContext(), InstFD, TSK);
951 FD->getMemberSpecializationInfo()->setPointOfInstantiation(POI);
952 mergeRedeclarable(FD, Redecl);
953 break;
954 }
955 case FunctionDecl::TK_FunctionTemplateSpecialization: {
956 auto *Template = readDeclAs<FunctionTemplateDecl>();
957 auto TSK = (TemplateSpecializationKind)Record.readInt();
958
959 // Template arguments.
960 SmallVector<TemplateArgument, 8> TemplArgs;
961 Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
962
963 // Template args as written.
964 SmallVector<TemplateArgumentLoc, 8> TemplArgLocs;
965 SourceLocation LAngleLoc, RAngleLoc;
966 bool HasTemplateArgumentsAsWritten = Record.readInt();
967 if (HasTemplateArgumentsAsWritten) {
968 unsigned NumTemplateArgLocs = Record.readInt();
969 TemplArgLocs.reserve(NumTemplateArgLocs);
970 for (unsigned i = 0; i != NumTemplateArgLocs; ++i)
971 TemplArgLocs.push_back(Record.readTemplateArgumentLoc());
972
973 LAngleLoc = readSourceLocation();
974 RAngleLoc = readSourceLocation();
975 }
976
977 SourceLocation POI = readSourceLocation();
978
979 ASTContext &C = Reader.getContext();
980 TemplateArgumentList *TemplArgList
981 = TemplateArgumentList::CreateCopy(C, TemplArgs);
982 TemplateArgumentListInfo TemplArgsInfo(LAngleLoc, RAngleLoc);
983 for (unsigned i = 0, e = TemplArgLocs.size(); i != e; ++i)
984 TemplArgsInfo.addArgument(TemplArgLocs[i]);
985
986 MemberSpecializationInfo *MSInfo = nullptr;
987 if (Record.readInt()) {
988 auto *FD = readDeclAs<FunctionDecl>();
989 auto TSK = (TemplateSpecializationKind)Record.readInt();
990 SourceLocation POI = readSourceLocation();
991
992 MSInfo = new (C) MemberSpecializationInfo(FD, TSK);
993 MSInfo->setPointOfInstantiation(POI);
994 }
995
996 FunctionTemplateSpecializationInfo *FTInfo =
997 FunctionTemplateSpecializationInfo::Create(
998 C, FD, Template, TSK, TemplArgList,
999 HasTemplateArgumentsAsWritten ? &TemplArgsInfo : nullptr, POI,
1000 MSInfo);
1001 FD->TemplateOrSpecialization = FTInfo;
1002
1003 if (FD->isCanonicalDecl()) { // if canonical add to template's set.
1004 // The template that contains the specializations set. It's not safe to
1005 // use getCanonicalDecl on Template since it may still be initializing.
1006 auto *CanonTemplate = readDeclAs<FunctionTemplateDecl>();
1007 // Get the InsertPos by FindNodeOrInsertPos() instead of calling
1008 // InsertNode(FTInfo) directly to avoid the getASTContext() call in
1009 // FunctionTemplateSpecializationInfo's Profile().
1010 // We avoid getASTContext because a decl in the parent hierarchy may
1011 // be initializing.
1012 llvm::FoldingSetNodeID ID;
1013 FunctionTemplateSpecializationInfo::Profile(ID, TemplArgs, C);
1014 void *InsertPos = nullptr;
1015 FunctionTemplateDecl::Common *CommonPtr = CanonTemplate->getCommonPtr();
1016 FunctionTemplateSpecializationInfo *ExistingInfo =
1017 CommonPtr->Specializations.FindNodeOrInsertPos(ID, InsertPos);
1018 if (InsertPos)
1019 CommonPtr->Specializations.InsertNode(FTInfo, InsertPos);
1020 else {
1021 assert(Reader.getContext().getLangOpts().Modules &&(static_cast <bool> (Reader.getContext().getLangOpts().
Modules && "already deserialized this template specialization"
) ? void (0) : __assert_fail ("Reader.getContext().getLangOpts().Modules && \"already deserialized this template specialization\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 1022, __extension__ __PRETTY_FUNCTION__))
1022 "already deserialized this template specialization")(static_cast <bool> (Reader.getContext().getLangOpts().
Modules && "already deserialized this template specialization"
) ? void (0) : __assert_fail ("Reader.getContext().getLangOpts().Modules && \"already deserialized this template specialization\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 1022, __extension__ __PRETTY_FUNCTION__))
;
1023 mergeRedeclarable(FD, ExistingInfo->getFunction(), Redecl);
1024 }
1025 }
1026 break;
1027 }
1028 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: {
1029 // Templates.
1030 UnresolvedSet<8> TemplDecls;
1031 unsigned NumTemplates = Record.readInt();
1032 while (NumTemplates--)
1033 TemplDecls.addDecl(readDeclAs<NamedDecl>());
1034
1035 // Templates args.
1036 TemplateArgumentListInfo TemplArgs;
1037 unsigned NumArgs = Record.readInt();
1038 while (NumArgs--)
1039 TemplArgs.addArgument(Record.readTemplateArgumentLoc());
1040 TemplArgs.setLAngleLoc(readSourceLocation());
1041 TemplArgs.setRAngleLoc(readSourceLocation());
1042
1043 FD->setDependentTemplateSpecialization(Reader.getContext(),
1044 TemplDecls, TemplArgs);
1045 // These are not merged; we don't need to merge redeclarations of dependent
1046 // template friends.
1047 break;
1048 }
1049 }
1050
1051 // Defer calling `setPure` until merging above has guaranteed we've set
1052 // `DefinitionData` (as this will need to access it).
1053 FD->setPure(Pure);
1054
1055 // Read in the parameters.
1056 unsigned NumParams = Record.readInt();
1057 SmallVector<ParmVarDecl *, 16> Params;
1058 Params.reserve(NumParams);
1059 for (unsigned I = 0; I != NumParams; ++I)
1060 Params.push_back(readDeclAs<ParmVarDecl>());
1061 FD->setParams(Reader.getContext(), Params);
1062}
1063
1064void ASTDeclReader::VisitObjCMethodDecl(ObjCMethodDecl *MD) {
1065 VisitNamedDecl(MD);
1066 if (Record.readInt()) {
1067 // Load the body on-demand. Most clients won't care, because method
1068 // definitions rarely show up in headers.
1069 Reader.PendingBodies[MD] = GetCurrentCursorOffset();
1070 HasPendingBody = true;
1071 }
1072 MD->setSelfDecl(readDeclAs<ImplicitParamDecl>());
1073 MD->setCmdDecl(readDeclAs<ImplicitParamDecl>());
1074 MD->setInstanceMethod(Record.readInt());
1075 MD->setVariadic(Record.readInt());
1076 MD->setPropertyAccessor(Record.readInt());
1077 MD->setSynthesizedAccessorStub(Record.readInt());
1078 MD->setDefined(Record.readInt());
1079 MD->setOverriding(Record.readInt());
1080 MD->setHasSkippedBody(Record.readInt());
1081
1082 MD->setIsRedeclaration(Record.readInt());
1083 MD->setHasRedeclaration(Record.readInt());
1084 if (MD->hasRedeclaration())
1085 Reader.getContext().setObjCMethodRedeclaration(MD,
1086 readDeclAs<ObjCMethodDecl>());
1087
1088 MD->setDeclImplementation((ObjCMethodDecl::ImplementationControl)Record.readInt());
1089 MD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record.readInt());
1090 MD->setRelatedResultType(Record.readInt());
1091 MD->setReturnType(Record.readType());
1092 MD->setReturnTypeSourceInfo(readTypeSourceInfo());
1093 MD->DeclEndLoc = readSourceLocation();
1094 unsigned NumParams = Record.readInt();
1095 SmallVector<ParmVarDecl *, 16> Params;
1096 Params.reserve(NumParams);
1097 for (unsigned I = 0; I != NumParams; ++I)
1098 Params.push_back(readDeclAs<ParmVarDecl>());
1099
1100 MD->setSelLocsKind((SelectorLocationsKind)Record.readInt());
1101 unsigned NumStoredSelLocs = Record.readInt();
1102 SmallVector<SourceLocation, 16> SelLocs;
1103 SelLocs.reserve(NumStoredSelLocs);
1104 for (unsigned i = 0; i != NumStoredSelLocs; ++i)
1105 SelLocs.push_back(readSourceLocation());
1106
1107 MD->setParamsAndSelLocs(Reader.getContext(), Params, SelLocs);
1108}
1109
1110void ASTDeclReader::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) {
1111 VisitTypedefNameDecl(D);
1112
1113 D->Variance = Record.readInt();
1114 D->Index = Record.readInt();
1115 D->VarianceLoc = readSourceLocation();
1116 D->ColonLoc = readSourceLocation();
1117}
1118
1119void ASTDeclReader::VisitObjCContainerDecl(ObjCContainerDecl *CD) {
1120 VisitNamedDecl(CD);
1121 CD->setAtStartLoc(readSourceLocation());
1122 CD->setAtEndRange(readSourceRange());
1123}
1124
1125ObjCTypeParamList *ASTDeclReader::ReadObjCTypeParamList() {
1126 unsigned numParams = Record.readInt();
1127 if (numParams == 0)
1128 return nullptr;
1129
1130 SmallVector<ObjCTypeParamDecl *, 4> typeParams;
1131 typeParams.reserve(numParams);
1132 for (unsigned i = 0; i != numParams; ++i) {
1133 auto *typeParam = readDeclAs<ObjCTypeParamDecl>();
1134 if (!typeParam)
1135 return nullptr;
1136
1137 typeParams.push_back(typeParam);
1138 }
1139
1140 SourceLocation lAngleLoc = readSourceLocation();
1141 SourceLocation rAngleLoc = readSourceLocation();
1142
1143 return ObjCTypeParamList::create(Reader.getContext(), lAngleLoc,
1144 typeParams, rAngleLoc);
1145}
1146
1147void ASTDeclReader::ReadObjCDefinitionData(
1148 struct ObjCInterfaceDecl::DefinitionData &Data) {
1149 // Read the superclass.
1150 Data.SuperClassTInfo = readTypeSourceInfo();
1151
1152 Data.EndLoc = readSourceLocation();
1153 Data.HasDesignatedInitializers = Record.readInt();
1154
1155 // Read the directly referenced protocols and their SourceLocations.
1156 unsigned NumProtocols = Record.readInt();
1157 SmallVector<ObjCProtocolDecl *, 16> Protocols;
1158 Protocols.reserve(NumProtocols);
1159 for (unsigned I = 0; I != NumProtocols; ++I)
1160 Protocols.push_back(readDeclAs<ObjCProtocolDecl>());
1161 SmallVector<SourceLocation, 16> ProtoLocs;
1162 ProtoLocs.reserve(NumProtocols);
1163 for (unsigned I = 0; I != NumProtocols; ++I)
1164 ProtoLocs.push_back(readSourceLocation());
1165 Data.ReferencedProtocols.set(Protocols.data(), NumProtocols, ProtoLocs.data(),
1166 Reader.getContext());
1167
1168 // Read the transitive closure of protocols referenced by this class.
1169 NumProtocols = Record.readInt();
1170 Protocols.clear();
1171 Protocols.reserve(NumProtocols);
1172 for (unsigned I = 0; I != NumProtocols; ++I)
1173 Protocols.push_back(readDeclAs<ObjCProtocolDecl>());
1174 Data.AllReferencedProtocols.set(Protocols.data(), NumProtocols,
1175 Reader.getContext());
1176}
1177
1178void ASTDeclReader::MergeDefinitionData(ObjCInterfaceDecl *D,
1179 struct ObjCInterfaceDecl::DefinitionData &&NewDD) {
1180 // FIXME: odr checking?
1181}
1182
1183void ASTDeclReader::VisitObjCInterfaceDecl(ObjCInterfaceDecl *ID) {
1184 RedeclarableResult Redecl = VisitRedeclarable(ID);
1185 VisitObjCContainerDecl(ID);
1186 DeferredTypeID = Record.getGlobalTypeID(Record.readInt());
1187 mergeRedeclarable(ID, Redecl);
1188
1189 ID->TypeParamList = ReadObjCTypeParamList();
1190 if (Record.readInt()) {
1191 // Read the definition.
1192 ID->allocateDefinitionData();
1193
1194 ReadObjCDefinitionData(ID->data());
1195 ObjCInterfaceDecl *Canon = ID->getCanonicalDecl();
1196 if (Canon->Data.getPointer()) {
1197 // If we already have a definition, keep the definition invariant and
1198 // merge the data.
1199 MergeDefinitionData(Canon, std::move(ID->data()));
1200 ID->Data = Canon->Data;
1201 } else {
1202 // Set the definition data of the canonical declaration, so other
1203 // redeclarations will see it.
1204 ID->getCanonicalDecl()->Data = ID->Data;
1205
1206 // We will rebuild this list lazily.
1207 ID->setIvarList(nullptr);
1208 }
1209
1210 // Note that we have deserialized a definition.
1211 Reader.PendingDefinitions.insert(ID);
1212
1213 // Note that we've loaded this Objective-C class.
1214 Reader.ObjCClassesLoaded.push_back(ID);
1215 } else {
1216 ID->Data = ID->getCanonicalDecl()->Data;
1217 }
1218}
1219
1220void ASTDeclReader::VisitObjCIvarDecl(ObjCIvarDecl *IVD) {
1221 VisitFieldDecl(IVD);
1222 IVD->setAccessControl((ObjCIvarDecl::AccessControl)Record.readInt());
1223 // This field will be built lazily.
1224 IVD->setNextIvar(nullptr);
1225 bool synth = Record.readInt();
1226 IVD->setSynthesize(synth);
1227}
1228
1229void ASTDeclReader::ReadObjCDefinitionData(
1230 struct ObjCProtocolDecl::DefinitionData &Data) {
1231 unsigned NumProtoRefs = Record.readInt();
1232 SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
1233 ProtoRefs.reserve(NumProtoRefs);
1234 for (unsigned I = 0; I != NumProtoRefs; ++I)
1235 ProtoRefs.push_back(readDeclAs<ObjCProtocolDecl>());
1236 SmallVector<SourceLocation, 16> ProtoLocs;
1237 ProtoLocs.reserve(NumProtoRefs);
1238 for (unsigned I = 0; I != NumProtoRefs; ++I)
1239 ProtoLocs.push_back(readSourceLocation());
1240 Data.ReferencedProtocols.set(ProtoRefs.data(), NumProtoRefs,
1241 ProtoLocs.data(), Reader.getContext());
1242}
1243
1244void ASTDeclReader::MergeDefinitionData(ObjCProtocolDecl *D,
1245 struct ObjCProtocolDecl::DefinitionData &&NewDD) {
1246 // FIXME: odr checking?
1247}
1248
1249void ASTDeclReader::VisitObjCProtocolDecl(ObjCProtocolDecl *PD) {
1250 RedeclarableResult Redecl = VisitRedeclarable(PD);
1251 VisitObjCContainerDecl(PD);
1252 mergeRedeclarable(PD, Redecl);
1253
1254 if (Record.readInt()) {
1255 // Read the definition.
1256 PD->allocateDefinitionData();
1257
1258 ReadObjCDefinitionData(PD->data());
1259
1260 ObjCProtocolDecl *Canon = PD->getCanonicalDecl();
1261 if (Canon->Data.getPointer()) {
1262 // If we already have a definition, keep the definition invariant and
1263 // merge the data.
1264 MergeDefinitionData(Canon, std::move(PD->data()));
1265 PD->Data = Canon->Data;
1266 } else {
1267 // Set the definition data of the canonical declaration, so other
1268 // redeclarations will see it.
1269 PD->getCanonicalDecl()->Data = PD->Data;
1270 }
1271 // Note that we have deserialized a definition.
1272 Reader.PendingDefinitions.insert(PD);
1273 } else {
1274 PD->Data = PD->getCanonicalDecl()->Data;
1275 }
1276}
1277
1278void ASTDeclReader::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *FD) {
1279 VisitFieldDecl(FD);
1280}
1281
1282void ASTDeclReader::VisitObjCCategoryDecl(ObjCCategoryDecl *CD) {
1283 VisitObjCContainerDecl(CD);
1284 CD->setCategoryNameLoc(readSourceLocation());
1285 CD->setIvarLBraceLoc(readSourceLocation());
1286 CD->setIvarRBraceLoc(readSourceLocation());
1287
1288 // Note that this category has been deserialized. We do this before
1289 // deserializing the interface declaration, so that it will consider this
1290 /// category.
1291 Reader.CategoriesDeserialized.insert(CD);
1292
1293 CD->ClassInterface = readDeclAs<ObjCInterfaceDecl>();
1294 CD->TypeParamList = ReadObjCTypeParamList();
1295 unsigned NumProtoRefs = Record.readInt();
1296 SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
1297 ProtoRefs.reserve(NumProtoRefs);
1298 for (unsigned I = 0; I != NumProtoRefs; ++I)
1299 ProtoRefs.push_back(readDeclAs<ObjCProtocolDecl>());
1300 SmallVector<SourceLocation, 16> ProtoLocs;
1301 ProtoLocs.reserve(NumProtoRefs);
1302 for (unsigned I = 0; I != NumProtoRefs; ++I)
1303 ProtoLocs.push_back(readSourceLocation());
1304 CD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
1305 Reader.getContext());
1306
1307 // Protocols in the class extension belong to the class.
1308 if (NumProtoRefs > 0 && CD->ClassInterface && CD->IsClassExtension())
1309 CD->ClassInterface->mergeClassExtensionProtocolList(
1310 (ObjCProtocolDecl *const *)ProtoRefs.data(), NumProtoRefs,
1311 Reader.getContext());
1312}
1313
1314void ASTDeclReader::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *CAD) {
1315 VisitNamedDecl(CAD);
1316 CAD->setClassInterface(readDeclAs<ObjCInterfaceDecl>());
1317}
1318
1319void ASTDeclReader::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
1320 VisitNamedDecl(D);
1321 D->setAtLoc(readSourceLocation());
1322 D->setLParenLoc(readSourceLocation());
1323 QualType T = Record.readType();
1324 TypeSourceInfo *TSI = readTypeSourceInfo();
1325 D->setType(T, TSI);
1326 D->setPropertyAttributes((ObjCPropertyAttribute::Kind)Record.readInt());
1327 D->setPropertyAttributesAsWritten(
1328 (ObjCPropertyAttribute::Kind)Record.readInt());
1329 D->setPropertyImplementation(
1330 (ObjCPropertyDecl::PropertyControl)Record.readInt());
1331 DeclarationName GetterName = Record.readDeclarationName();
1332 SourceLocation GetterLoc = readSourceLocation();
1333 D->setGetterName(GetterName.getObjCSelector(), GetterLoc);
1334 DeclarationName SetterName = Record.readDeclarationName();
1335 SourceLocation SetterLoc = readSourceLocation();
1336 D->setSetterName(SetterName.getObjCSelector(), SetterLoc);
1337 D->setGetterMethodDecl(readDeclAs<ObjCMethodDecl>());
1338 D->setSetterMethodDecl(readDeclAs<ObjCMethodDecl>());
1339 D->setPropertyIvarDecl(readDeclAs<ObjCIvarDecl>());
1340}
1341
1342void ASTDeclReader::VisitObjCImplDecl(ObjCImplDecl *D) {
1343 VisitObjCContainerDecl(D);
1344 D->setClassInterface(readDeclAs<ObjCInterfaceDecl>());
1345}
1346
1347void ASTDeclReader::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
1348 VisitObjCImplDecl(D);
1349 D->CategoryNameLoc = readSourceLocation();
1350}
1351
1352void ASTDeclReader::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
1353 VisitObjCImplDecl(D);
1354 D->setSuperClass(readDeclAs<ObjCInterfaceDecl>());
1355 D->SuperLoc = readSourceLocation();
1356 D->setIvarLBraceLoc(readSourceLocation());
1357 D->setIvarRBraceLoc(readSourceLocation());
1358 D->setHasNonZeroConstructors(Record.readInt());
1359 D->setHasDestructors(Record.readInt());
1360 D->NumIvarInitializers = Record.readInt();
1361 if (D->NumIvarInitializers)
1362 D->IvarInitializers = ReadGlobalOffset();
1363}
1364
1365void ASTDeclReader::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
1366 VisitDecl(D);
1367 D->setAtLoc(readSourceLocation());
1368 D->setPropertyDecl(readDeclAs<ObjCPropertyDecl>());
1369 D->PropertyIvarDecl = readDeclAs<ObjCIvarDecl>();
1370 D->IvarLoc = readSourceLocation();
1371 D->setGetterMethodDecl(readDeclAs<ObjCMethodDecl>());
1372 D->setSetterMethodDecl(readDeclAs<ObjCMethodDecl>());
1373 D->setGetterCXXConstructor(Record.readExpr());
1374 D->setSetterCXXAssignment(Record.readExpr());
1375}
1376
1377void ASTDeclReader::VisitFieldDecl(FieldDecl *FD) {
1378 VisitDeclaratorDecl(FD);
1379 FD->Mutable = Record.readInt();
1380
1381 if (auto ISK = static_cast<FieldDecl::InitStorageKind>(Record.readInt())) {
1382 FD->InitStorage.setInt(ISK);
1383 FD->InitStorage.setPointer(ISK == FieldDecl::ISK_CapturedVLAType
1384 ? Record.readType().getAsOpaquePtr()
1385 : Record.readExpr());
1386 }
1387
1388 if (auto *BW = Record.readExpr())
1389 FD->setBitWidth(BW);
1390
1391 if (!FD->getDeclName()) {
1392 if (auto *Tmpl = readDeclAs<FieldDecl>())
1393 Reader.getContext().setInstantiatedFromUnnamedFieldDecl(FD, Tmpl);
1394 }
1395 mergeMergeable(FD);
1396}
1397
1398void ASTDeclReader::VisitMSPropertyDecl(MSPropertyDecl *PD) {
1399 VisitDeclaratorDecl(PD);
1400 PD->GetterId = Record.readIdentifier();
1401 PD->SetterId = Record.readIdentifier();
1402}
1403
1404void ASTDeclReader::VisitMSGuidDecl(MSGuidDecl *D) {
1405 VisitValueDecl(D);
1406 D->PartVal.Part1 = Record.readInt();
1407 D->PartVal.Part2 = Record.readInt();
1408 D->PartVal.Part3 = Record.readInt();
1409 for (auto &C : D->PartVal.Part4And5)
1410 C = Record.readInt();
1411
1412 // Add this GUID to the AST context's lookup structure, and merge if needed.
1413 if (MSGuidDecl *Existing = Reader.getContext().MSGuidDecls.GetOrInsertNode(D))
1414 Reader.getContext().setPrimaryMergedDecl(D, Existing->getCanonicalDecl());
1415}
1416
1417void ASTDeclReader::VisitTemplateParamObjectDecl(TemplateParamObjectDecl *D) {
1418 VisitValueDecl(D);
1419 D->Value = Record.readAPValue();
1420
1421 // Add this template parameter object to the AST context's lookup structure,
1422 // and merge if needed.
1423 if (TemplateParamObjectDecl *Existing =
1424 Reader.getContext().TemplateParamObjectDecls.GetOrInsertNode(D))
1425 Reader.getContext().setPrimaryMergedDecl(D, Existing->getCanonicalDecl());
1426}
1427
1428void ASTDeclReader::VisitIndirectFieldDecl(IndirectFieldDecl *FD) {
1429 VisitValueDecl(FD);
1430
1431 FD->ChainingSize = Record.readInt();
1432 assert(FD->ChainingSize >= 2 && "Anonymous chaining must be >= 2")(static_cast <bool> (FD->ChainingSize >= 2 &&
"Anonymous chaining must be >= 2") ? void (0) : __assert_fail
("FD->ChainingSize >= 2 && \"Anonymous chaining must be >= 2\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 1432, __extension__ __PRETTY_FUNCTION__))
;
1433 FD->Chaining = new (Reader.getContext())NamedDecl*[FD->ChainingSize];
1434
1435 for (unsigned I = 0; I != FD->ChainingSize; ++I)
1436 FD->Chaining[I] = readDeclAs<NamedDecl>();
1437
1438 mergeMergeable(FD);
1439}
1440
1441ASTDeclReader::RedeclarableResult ASTDeclReader::VisitVarDeclImpl(VarDecl *VD) {
1442 RedeclarableResult Redecl = VisitRedeclarable(VD);
1443 VisitDeclaratorDecl(VD);
1444
1445 VD->VarDeclBits.SClass = (StorageClass)Record.readInt();
1446 VD->VarDeclBits.TSCSpec = Record.readInt();
1447 VD->VarDeclBits.InitStyle = Record.readInt();
1448 VD->VarDeclBits.ARCPseudoStrong = Record.readInt();
1449 if (!isa<ParmVarDecl>(VD)) {
1450 VD->NonParmVarDeclBits.IsThisDeclarationADemotedDefinition =
1451 Record.readInt();
1452 VD->NonParmVarDeclBits.ExceptionVar = Record.readInt();
1453 VD->NonParmVarDeclBits.NRVOVariable = Record.readInt();
1454 VD->NonParmVarDeclBits.CXXForRangeDecl = Record.readInt();
1455 VD->NonParmVarDeclBits.ObjCForDecl = Record.readInt();
1456 VD->NonParmVarDeclBits.IsInline = Record.readInt();
1457 VD->NonParmVarDeclBits.IsInlineSpecified = Record.readInt();
1458 VD->NonParmVarDeclBits.IsConstexpr = Record.readInt();
1459 VD->NonParmVarDeclBits.IsInitCapture = Record.readInt();
1460 VD->NonParmVarDeclBits.PreviousDeclInSameBlockScope = Record.readInt();
1461 VD->NonParmVarDeclBits.ImplicitParamKind = Record.readInt();
1462 VD->NonParmVarDeclBits.EscapingByref = Record.readInt();
1463 }
1464 auto VarLinkage = Linkage(Record.readInt());
1465 VD->setCachedLinkage(VarLinkage);
1466
1467 // Reconstruct the one piece of the IdentifierNamespace that we need.
1468 if (VD->getStorageClass() == SC_Extern && VarLinkage != NoLinkage &&
1469 VD->getLexicalDeclContext()->isFunctionOrMethod())
1470 VD->setLocalExternDecl();
1471
1472 if (uint64_t Val = Record.readInt()) {
1473 VD->setInit(Record.readExpr());
1474 if (Val != 1) {
1475 EvaluatedStmt *Eval = VD->ensureEvaluatedStmt();
1476 Eval->HasConstantInitialization = (Val & 2) != 0;
1477 Eval->HasConstantDestruction = (Val & 4) != 0;
1478 }
1479 }
1480
1481 if (VD->hasAttr<BlocksAttr>() && VD->getType()->getAsCXXRecordDecl()) {
1482 Expr *CopyExpr = Record.readExpr();
1483 if (CopyExpr)
1484 Reader.getContext().setBlockVarCopyInit(VD, CopyExpr, Record.readInt());
1485 }
1486
1487 if (VD->getStorageDuration() == SD_Static && Record.readInt()) {
1488 Reader.DefinitionSource[VD] =
1489 Loc.F->Kind == ModuleKind::MK_MainFile ||
1490 Reader.getContext().getLangOpts().BuildingPCHWithObjectFile;
1491 }
1492
1493 enum VarKind {
1494 VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization
1495 };
1496 switch ((VarKind)Record.readInt()) {
1497 case VarNotTemplate:
1498 // Only true variables (not parameters or implicit parameters) can be
1499 // merged; the other kinds are not really redeclarable at all.
1500 if (!isa<ParmVarDecl>(VD) && !isa<ImplicitParamDecl>(VD) &&
1501 !isa<VarTemplateSpecializationDecl>(VD))
1502 mergeRedeclarable(VD, Redecl);
1503 break;
1504 case VarTemplate:
1505 // Merged when we merge the template.
1506 VD->setDescribedVarTemplate(readDeclAs<VarTemplateDecl>());
1507 break;
1508 case StaticDataMemberSpecialization: { // HasMemberSpecializationInfo.
1509 auto *Tmpl = readDeclAs<VarDecl>();
1510 auto TSK = (TemplateSpecializationKind)Record.readInt();
1511 SourceLocation POI = readSourceLocation();
1512 Reader.getContext().setInstantiatedFromStaticDataMember(VD, Tmpl, TSK,POI);
1513 mergeRedeclarable(VD, Redecl);
1514 break;
1515 }
1516 }
1517
1518 return Redecl;
1519}
1520
1521void ASTDeclReader::VisitImplicitParamDecl(ImplicitParamDecl *PD) {
1522 VisitVarDecl(PD);
1523}
1524
1525void ASTDeclReader::VisitParmVarDecl(ParmVarDecl *PD) {
1526 VisitVarDecl(PD);
1527 unsigned isObjCMethodParam = Record.readInt();
1528 unsigned scopeDepth = Record.readInt();
1529 unsigned scopeIndex = Record.readInt();
1530 unsigned declQualifier = Record.readInt();
1531 if (isObjCMethodParam) {
1532 assert(scopeDepth == 0)(static_cast <bool> (scopeDepth == 0) ? void (0) : __assert_fail
("scopeDepth == 0", "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 1532, __extension__ __PRETTY_FUNCTION__))
;
1533 PD->setObjCMethodScopeInfo(scopeIndex);
1534 PD->ParmVarDeclBits.ScopeDepthOrObjCQuals = declQualifier;
1535 } else {
1536 PD->setScopeInfo(scopeDepth, scopeIndex);
1537 }
1538 PD->ParmVarDeclBits.IsKNRPromoted = Record.readInt();
1539 PD->ParmVarDeclBits.HasInheritedDefaultArg = Record.readInt();
1540 if (Record.readInt()) // hasUninstantiatedDefaultArg.
1541 PD->setUninstantiatedDefaultArg(Record.readExpr());
1542
1543 // FIXME: If this is a redeclaration of a function from another module, handle
1544 // inheritance of default arguments.
1545}
1546
1547void ASTDeclReader::VisitDecompositionDecl(DecompositionDecl *DD) {
1548 VisitVarDecl(DD);
1549 auto **BDs = DD->getTrailingObjects<BindingDecl *>();
1550 for (unsigned I = 0; I != DD->NumBindings; ++I) {
1551 BDs[I] = readDeclAs<BindingDecl>();
1552 BDs[I]->setDecomposedDecl(DD);
1553 }
1554}
1555
1556void ASTDeclReader::VisitBindingDecl(BindingDecl *BD) {
1557 VisitValueDecl(BD);
1558 BD->Binding = Record.readExpr();
1559}
1560
1561void ASTDeclReader::VisitFileScopeAsmDecl(FileScopeAsmDecl *AD) {
1562 VisitDecl(AD);
1563 AD->setAsmString(cast<StringLiteral>(Record.readExpr()));
1564 AD->setRParenLoc(readSourceLocation());
1565}
1566
1567void ASTDeclReader::VisitBlockDecl(BlockDecl *BD) {
1568 VisitDecl(BD);
1569 BD->setBody(cast_or_null<CompoundStmt>(Record.readStmt()));
1570 BD->setSignatureAsWritten(readTypeSourceInfo());
1571 unsigned NumParams = Record.readInt();
1572 SmallVector<ParmVarDecl *, 16> Params;
1573 Params.reserve(NumParams);
1574 for (unsigned I = 0; I != NumParams; ++I)
1575 Params.push_back(readDeclAs<ParmVarDecl>());
1576 BD->setParams(Params);
1577
1578 BD->setIsVariadic(Record.readInt());
1579 BD->setBlockMissingReturnType(Record.readInt());
1580 BD->setIsConversionFromLambda(Record.readInt());
1581 BD->setDoesNotEscape(Record.readInt());
1582 BD->setCanAvoidCopyToHeap(Record.readInt());
1583
1584 bool capturesCXXThis = Record.readInt();
1585 unsigned numCaptures = Record.readInt();
1586 SmallVector<BlockDecl::Capture, 16> captures;
1587 captures.reserve(numCaptures);
1588 for (unsigned i = 0; i != numCaptures; ++i) {
1589 auto *decl = readDeclAs<VarDecl>();
1590 unsigned flags = Record.readInt();
1591 bool byRef = (flags & 1);
1592 bool nested = (flags & 2);
1593 Expr *copyExpr = ((flags & 4) ? Record.readExpr() : nullptr);
1594
1595 captures.push_back(BlockDecl::Capture(decl, byRef, nested, copyExpr));
1596 }
1597 BD->setCaptures(Reader.getContext(), captures, capturesCXXThis);
1598}
1599
1600void ASTDeclReader::VisitCapturedDecl(CapturedDecl *CD) {
1601 VisitDecl(CD);
1602 unsigned ContextParamPos = Record.readInt();
1603 CD->setNothrow(Record.readInt() != 0);
1604 // Body is set by VisitCapturedStmt.
1605 for (unsigned I = 0; I < CD->NumParams; ++I) {
1606 if (I != ContextParamPos)
1607 CD->setParam(I, readDeclAs<ImplicitParamDecl>());
1608 else
1609 CD->setContextParam(I, readDeclAs<ImplicitParamDecl>());
1610 }
1611}
1612
1613void ASTDeclReader::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
1614 VisitDecl(D);
1615 D->setLanguage((LinkageSpecDecl::LanguageIDs)Record.readInt());
1616 D->setExternLoc(readSourceLocation());
1617 D->setRBraceLoc(readSourceLocation());
1618}
1619
1620void ASTDeclReader::VisitExportDecl(ExportDecl *D) {
1621 VisitDecl(D);
1622 D->RBraceLoc = readSourceLocation();
1623}
1624
1625void ASTDeclReader::VisitLabelDecl(LabelDecl *D) {
1626 VisitNamedDecl(D);
1627 D->setLocStart(readSourceLocation());
1628}
1629
1630void ASTDeclReader::VisitNamespaceDecl(NamespaceDecl *D) {
1631 RedeclarableResult Redecl = VisitRedeclarable(D);
1632 VisitNamedDecl(D);
1633 D->setInline(Record.readInt());
1634 D->LocStart = readSourceLocation();
1635 D->RBraceLoc = readSourceLocation();
1636
1637 // Defer loading the anonymous namespace until we've finished merging
1638 // this namespace; loading it might load a later declaration of the
1639 // same namespace, and we have an invariant that older declarations
1640 // get merged before newer ones try to merge.
1641 GlobalDeclID AnonNamespace = 0;
1642 if (Redecl.getFirstID() == ThisDeclID) {
1643 AnonNamespace = readDeclID();
1644 } else {
1645 // Link this namespace back to the first declaration, which has already
1646 // been deserialized.
1647 D->AnonOrFirstNamespaceAndInline.setPointer(D->getFirstDecl());
1648 }
1649
1650 mergeRedeclarable(D, Redecl);
1651
1652 if (AnonNamespace) {
1653 // Each module has its own anonymous namespace, which is disjoint from
1654 // any other module's anonymous namespaces, so don't attach the anonymous
1655 // namespace at all.
1656 auto *Anon = cast<NamespaceDecl>(Reader.GetDecl(AnonNamespace));
1657 if (!Record.isModule())
1658 D->setAnonymousNamespace(Anon);
1659 }
1660}
1661
1662void ASTDeclReader::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
1663 RedeclarableResult Redecl = VisitRedeclarable(D);
1664 VisitNamedDecl(D);
1665 D->NamespaceLoc = readSourceLocation();
1666 D->IdentLoc = readSourceLocation();
1667 D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1668 D->Namespace = readDeclAs<NamedDecl>();
1669 mergeRedeclarable(D, Redecl);
1670}
1671
1672void ASTDeclReader::VisitUsingDecl(UsingDecl *D) {
1673 VisitNamedDecl(D);
1674 D->setUsingLoc(readSourceLocation());
1675 D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1676 D->DNLoc = Record.readDeclarationNameLoc(D->getDeclName());
1677 D->FirstUsingShadow.setPointer(readDeclAs<UsingShadowDecl>());
1678 D->setTypename(Record.readInt());
1679 if (auto *Pattern = readDeclAs<NamedDecl>())
1680 Reader.getContext().setInstantiatedFromUsingDecl(D, Pattern);
1681 mergeMergeable(D);
1682}
1683
1684void ASTDeclReader::VisitUsingEnumDecl(UsingEnumDecl *D) {
1685 VisitNamedDecl(D);
1686 D->setUsingLoc(readSourceLocation());
1687 D->setEnumLoc(readSourceLocation());
1688 D->Enum = readDeclAs<EnumDecl>();
1689 D->FirstUsingShadow.setPointer(readDeclAs<UsingShadowDecl>());
1690 if (auto *Pattern = readDeclAs<UsingEnumDecl>())
1691 Reader.getContext().setInstantiatedFromUsingEnumDecl(D, Pattern);
1692 mergeMergeable(D);
1693}
1694
1695void ASTDeclReader::VisitUsingPackDecl(UsingPackDecl *D) {
1696 VisitNamedDecl(D);
1697 D->InstantiatedFrom = readDeclAs<NamedDecl>();
1698 auto **Expansions = D->getTrailingObjects<NamedDecl *>();
1699 for (unsigned I = 0; I != D->NumExpansions; ++I)
1700 Expansions[I] = readDeclAs<NamedDecl>();
1701 mergeMergeable(D);
1702}
1703
1704void ASTDeclReader::VisitUsingShadowDecl(UsingShadowDecl *D) {
1705 RedeclarableResult Redecl = VisitRedeclarable(D);
1706 VisitNamedDecl(D);
1707 D->Underlying = readDeclAs<NamedDecl>();
1708 D->IdentifierNamespace = Record.readInt();
1709 D->UsingOrNextShadow = readDeclAs<NamedDecl>();
1710 auto *Pattern = readDeclAs<UsingShadowDecl>();
1711 if (Pattern)
1712 Reader.getContext().setInstantiatedFromUsingShadowDecl(D, Pattern);
1713 mergeRedeclarable(D, Redecl);
1714}
1715
1716void ASTDeclReader::VisitConstructorUsingShadowDecl(
1717 ConstructorUsingShadowDecl *D) {
1718 VisitUsingShadowDecl(D);
1719 D->NominatedBaseClassShadowDecl = readDeclAs<ConstructorUsingShadowDecl>();
1720 D->ConstructedBaseClassShadowDecl = readDeclAs<ConstructorUsingShadowDecl>();
1721 D->IsVirtual = Record.readInt();
1722}
1723
1724void ASTDeclReader::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
1725 VisitNamedDecl(D);
1726 D->UsingLoc = readSourceLocation();
1727 D->NamespaceLoc = readSourceLocation();
1728 D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1729 D->NominatedNamespace = readDeclAs<NamedDecl>();
1730 D->CommonAncestor = readDeclAs<DeclContext>();
1731}
1732
1733void ASTDeclReader::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
1734 VisitValueDecl(D);
1735 D->setUsingLoc(readSourceLocation());
1736 D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1737 D->DNLoc = Record.readDeclarationNameLoc(D->getDeclName());
1738 D->EllipsisLoc = readSourceLocation();
1739 mergeMergeable(D);
1740}
1741
1742void ASTDeclReader::VisitUnresolvedUsingTypenameDecl(
1743 UnresolvedUsingTypenameDecl *D) {
1744 VisitTypeDecl(D);
1745 D->TypenameLocation = readSourceLocation();
1746 D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1747 D->EllipsisLoc = readSourceLocation();
1748 mergeMergeable(D);
1749}
1750
1751void ASTDeclReader::VisitUnresolvedUsingIfExistsDecl(
1752 UnresolvedUsingIfExistsDecl *D) {
1753 VisitNamedDecl(D);
1754}
1755
1756void ASTDeclReader::ReadCXXDefinitionData(
1757 struct CXXRecordDecl::DefinitionData &Data, const CXXRecordDecl *D) {
1758 #define FIELD(Name, Width, Merge) \
1759 Data.Name = Record.readInt();
1760 #include "clang/AST/CXXRecordDeclDefinitionBits.def"
1761
1762 // Note: the caller has deserialized the IsLambda bit already.
1763 Data.ODRHash = Record.readInt();
1764 Data.HasODRHash = true;
1765
1766 if (Record.readInt()) {
1767 Reader.DefinitionSource[D] =
1768 Loc.F->Kind == ModuleKind::MK_MainFile ||
1769 Reader.getContext().getLangOpts().BuildingPCHWithObjectFile;
1770 }
1771
1772 Data.NumBases = Record.readInt();
1773 if (Data.NumBases)
1774 Data.Bases = ReadGlobalOffset();
1775 Data.NumVBases = Record.readInt();
1776 if (Data.NumVBases)
1777 Data.VBases = ReadGlobalOffset();
1778
1779 Record.readUnresolvedSet(Data.Conversions);
1780 Data.ComputedVisibleConversions = Record.readInt();
1781 if (Data.ComputedVisibleConversions)
1782 Record.readUnresolvedSet(Data.VisibleConversions);
1783 assert(Data.Definition && "Data.Definition should be already set!")(static_cast <bool> (Data.Definition && "Data.Definition should be already set!"
) ? void (0) : __assert_fail ("Data.Definition && \"Data.Definition should be already set!\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 1783, __extension__ __PRETTY_FUNCTION__))
;
1784 Data.FirstFriend = readDeclID();
1785
1786 if (Data.IsLambda) {
1787 using Capture = LambdaCapture;
1788
1789 auto &Lambda = static_cast<CXXRecordDecl::LambdaDefinitionData &>(Data);
1790 Lambda.Dependent = Record.readInt();
1791 Lambda.IsGenericLambda = Record.readInt();
1792 Lambda.CaptureDefault = Record.readInt();
1793 Lambda.NumCaptures = Record.readInt();
1794 Lambda.NumExplicitCaptures = Record.readInt();
1795 Lambda.HasKnownInternalLinkage = Record.readInt();
1796 Lambda.ManglingNumber = Record.readInt();
1797 D->setDeviceLambdaManglingNumber(Record.readInt());
1798 Lambda.ContextDecl = readDeclID();
1799 Lambda.Captures = (Capture *)Reader.getContext().Allocate(
1800 sizeof(Capture) * Lambda.NumCaptures);
1801 Capture *ToCapture = Lambda.Captures;
1802 Lambda.MethodTyInfo = readTypeSourceInfo();
1803 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
1804 SourceLocation Loc = readSourceLocation();
1805 bool IsImplicit = Record.readInt();
1806 auto Kind = static_cast<LambdaCaptureKind>(Record.readInt());
1807 switch (Kind) {
1808 case LCK_StarThis:
1809 case LCK_This:
1810 case LCK_VLAType:
1811 *ToCapture++ = Capture(Loc, IsImplicit, Kind, nullptr,SourceLocation());
1812 break;
1813 case LCK_ByCopy:
1814 case LCK_ByRef:
1815 auto *Var = readDeclAs<VarDecl>();
1816 SourceLocation EllipsisLoc = readSourceLocation();
1817 *ToCapture++ = Capture(Loc, IsImplicit, Kind, Var, EllipsisLoc);
1818 break;
1819 }
1820 }
1821 }
1822}
1823
1824void ASTDeclReader::MergeDefinitionData(
1825 CXXRecordDecl *D, struct CXXRecordDecl::DefinitionData &&MergeDD) {
1826 assert(D->DefinitionData &&(static_cast <bool> (D->DefinitionData && "merging class definition into non-definition"
) ? void (0) : __assert_fail ("D->DefinitionData && \"merging class definition into non-definition\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 1827, __extension__ __PRETTY_FUNCTION__))
1827 "merging class definition into non-definition")(static_cast <bool> (D->DefinitionData && "merging class definition into non-definition"
) ? void (0) : __assert_fail ("D->DefinitionData && \"merging class definition into non-definition\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 1827, __extension__ __PRETTY_FUNCTION__))
;
1828 auto &DD = *D->DefinitionData;
1829
1830 if (DD.Definition != MergeDD.Definition) {
1831 // Track that we merged the definitions.
1832 Reader.MergedDeclContexts.insert(std::make_pair(MergeDD.Definition,
1833 DD.Definition));
1834 Reader.PendingDefinitions.erase(MergeDD.Definition);
1835 MergeDD.Definition->setCompleteDefinition(false);
1836 Reader.mergeDefinitionVisibility(DD.Definition, MergeDD.Definition);
1837 assert(Reader.Lookups.find(MergeDD.Definition) == Reader.Lookups.end() &&(static_cast <bool> (Reader.Lookups.find(MergeDD.Definition
) == Reader.Lookups.end() && "already loaded pending lookups for merged definition"
) ? void (0) : __assert_fail ("Reader.Lookups.find(MergeDD.Definition) == Reader.Lookups.end() && \"already loaded pending lookups for merged definition\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 1838, __extension__ __PRETTY_FUNCTION__))
1838 "already loaded pending lookups for merged definition")(static_cast <bool> (Reader.Lookups.find(MergeDD.Definition
) == Reader.Lookups.end() && "already loaded pending lookups for merged definition"
) ? void (0) : __assert_fail ("Reader.Lookups.find(MergeDD.Definition) == Reader.Lookups.end() && \"already loaded pending lookups for merged definition\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 1838, __extension__ __PRETTY_FUNCTION__))
;
1839 }
1840
1841 auto PFDI = Reader.PendingFakeDefinitionData.find(&DD);
1842 if (PFDI != Reader.PendingFakeDefinitionData.end() &&
1843 PFDI->second == ASTReader::PendingFakeDefinitionKind::Fake) {
1844 // We faked up this definition data because we found a class for which we'd
1845 // not yet loaded the definition. Replace it with the real thing now.
1846 assert(!DD.IsLambda && !MergeDD.IsLambda && "faked up lambda definition?")(static_cast <bool> (!DD.IsLambda && !MergeDD.IsLambda
&& "faked up lambda definition?") ? void (0) : __assert_fail
("!DD.IsLambda && !MergeDD.IsLambda && \"faked up lambda definition?\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 1846, __extension__ __PRETTY_FUNCTION__))
;
1847 PFDI->second = ASTReader::PendingFakeDefinitionKind::FakeLoaded;
1848
1849 // Don't change which declaration is the definition; that is required
1850 // to be invariant once we select it.
1851 auto *Def = DD.Definition;
1852 DD = std::move(MergeDD);
1853 DD.Definition = Def;
1854 return;
1855 }
1856
1857 bool DetectedOdrViolation = false;
1858
1859 #define FIELD(Name, Width, Merge) Merge(Name)
1860 #define MERGE_OR(Field) DD.Field |= MergeDD.Field;
1861 #define NO_MERGE(Field) \
1862 DetectedOdrViolation |= DD.Field != MergeDD.Field; \
1863 MERGE_OR(Field)
1864 #include "clang/AST/CXXRecordDeclDefinitionBits.def"
1865 NO_MERGE(IsLambda)
1866 #undef NO_MERGE
1867 #undef MERGE_OR
1868
1869 if (DD.NumBases != MergeDD.NumBases || DD.NumVBases != MergeDD.NumVBases)
1870 DetectedOdrViolation = true;
1871 // FIXME: Issue a diagnostic if the base classes don't match when we come
1872 // to lazily load them.
1873
1874 // FIXME: Issue a diagnostic if the list of conversion functions doesn't
1875 // match when we come to lazily load them.
1876 if (MergeDD.ComputedVisibleConversions && !DD.ComputedVisibleConversions) {
1877 DD.VisibleConversions = std::move(MergeDD.VisibleConversions);
1878 DD.ComputedVisibleConversions = true;
1879 }
1880
1881 // FIXME: Issue a diagnostic if FirstFriend doesn't match when we come to
1882 // lazily load it.
1883
1884 if (DD.IsLambda) {
1885 // FIXME: ODR-checking for merging lambdas (this happens, for instance,
1886 // when they occur within the body of a function template specialization).
1887 }
1888
1889 if (D->getODRHash() != MergeDD.ODRHash) {
1890 DetectedOdrViolation = true;
1891 }
1892
1893 if (DetectedOdrViolation)
1894 Reader.PendingOdrMergeFailures[DD.Definition].push_back(
1895 {MergeDD.Definition, &MergeDD});
1896}
1897
1898void ASTDeclReader::ReadCXXRecordDefinition(CXXRecordDecl *D, bool Update) {
1899 struct CXXRecordDecl::DefinitionData *DD;
1900 ASTContext &C = Reader.getContext();
1901
1902 // Determine whether this is a lambda closure type, so that we can
1903 // allocate the appropriate DefinitionData structure.
1904 bool IsLambda = Record.readInt();
1905 if (IsLambda)
1906 DD = new (C) CXXRecordDecl::LambdaDefinitionData(D, nullptr, false, false,
1907 LCD_None);
1908 else
1909 DD = new (C) struct CXXRecordDecl::DefinitionData(D);
1910
1911 CXXRecordDecl *Canon = D->getCanonicalDecl();
1912 // Set decl definition data before reading it, so that during deserialization
1913 // when we read CXXRecordDecl, it already has definition data and we don't
1914 // set fake one.
1915 if (!Canon->DefinitionData)
1916 Canon->DefinitionData = DD;
1917 D->DefinitionData = Canon->DefinitionData;
1918 ReadCXXDefinitionData(*DD, D);
1919
1920 // We might already have a different definition for this record. This can
1921 // happen either because we're reading an update record, or because we've
1922 // already done some merging. Either way, just merge into it.
1923 if (Canon->DefinitionData != DD) {
1924 MergeDefinitionData(Canon, std::move(*DD));
1925 return;
1926 }
1927
1928 // Mark this declaration as being a definition.
1929 D->setCompleteDefinition(true);
1930
1931 // If this is not the first declaration or is an update record, we can have
1932 // other redeclarations already. Make a note that we need to propagate the
1933 // DefinitionData pointer onto them.
1934 if (Update || Canon != D)
1935 Reader.PendingDefinitions.insert(D);
1936}
1937
1938ASTDeclReader::RedeclarableResult
1939ASTDeclReader::VisitCXXRecordDeclImpl(CXXRecordDecl *D) {
1940 RedeclarableResult Redecl = VisitRecordDeclImpl(D);
1941
1942 ASTContext &C = Reader.getContext();
1943
1944 enum CXXRecKind {
1945 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization
1946 };
1947 switch ((CXXRecKind)Record.readInt()) {
1948 case CXXRecNotTemplate:
1949 // Merged when we merge the folding set entry in the primary template.
1950 if (!isa<ClassTemplateSpecializationDecl>(D))
1951 mergeRedeclarable(D, Redecl);
1952 break;
1953 case CXXRecTemplate: {
1954 // Merged when we merge the template.
1955 auto *Template = readDeclAs<ClassTemplateDecl>();
1956 D->TemplateOrInstantiation = Template;
1957 if (!Template->getTemplatedDecl()) {
1958 // We've not actually loaded the ClassTemplateDecl yet, because we're
1959 // currently being loaded as its pattern. Rely on it to set up our
1960 // TypeForDecl (see VisitClassTemplateDecl).
1961 //
1962 // Beware: we do not yet know our canonical declaration, and may still
1963 // get merged once the surrounding class template has got off the ground.
1964 DeferredTypeID = 0;
1965 }
1966 break;
1967 }
1968 case CXXRecMemberSpecialization: {
1969 auto *RD = readDeclAs<CXXRecordDecl>();
1970 auto TSK = (TemplateSpecializationKind)Record.readInt();
1971 SourceLocation POI = readSourceLocation();
1972 MemberSpecializationInfo *MSI = new (C) MemberSpecializationInfo(RD, TSK);
1973 MSI->setPointOfInstantiation(POI);
1974 D->TemplateOrInstantiation = MSI;
1975 mergeRedeclarable(D, Redecl);
1976 break;
1977 }
1978 }
1979
1980 bool WasDefinition = Record.readInt();
1981 if (WasDefinition)
1982 ReadCXXRecordDefinition(D, /*Update*/false);
1983 else
1984 // Propagate DefinitionData pointer from the canonical declaration.
1985 D->DefinitionData = D->getCanonicalDecl()->DefinitionData;
1986
1987 // Lazily load the key function to avoid deserializing every method so we can
1988 // compute it.
1989 if (WasDefinition) {
1990 DeclID KeyFn = readDeclID();
1991 if (KeyFn && D->isCompleteDefinition())
1992 // FIXME: This is wrong for the ARM ABI, where some other module may have
1993 // made this function no longer be a key function. We need an update
1994 // record or similar for that case.
1995 C.KeyFunctions[D] = KeyFn;
1996 }
1997
1998 return Redecl;
1999}
2000
2001void ASTDeclReader::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) {
2002 D->setExplicitSpecifier(Record.readExplicitSpec());
2003 D->Ctor = readDeclAs<CXXConstructorDecl>();
2004 VisitFunctionDecl(D);
2005 D->setIsCopyDeductionCandidate(Record.readInt());
2006}
2007
2008void ASTDeclReader::VisitCXXMethodDecl(CXXMethodDecl *D) {
2009 VisitFunctionDecl(D);
2010
2011 unsigned NumOverridenMethods = Record.readInt();
2012 if (D->isCanonicalDecl()) {
2013 while (NumOverridenMethods--) {
2014 // Avoid invariant checking of CXXMethodDecl::addOverriddenMethod,
2015 // MD may be initializing.
2016 if (auto *MD = readDeclAs<CXXMethodDecl>())
2017 Reader.getContext().addOverriddenMethod(D, MD->getCanonicalDecl());
2018 }
2019 } else {
2020 // We don't care about which declarations this used to override; we get
2021 // the relevant information from the canonical declaration.
2022 Record.skipInts(NumOverridenMethods);
2023 }
2024}
2025
2026void ASTDeclReader::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
2027 // We need the inherited constructor information to merge the declaration,
2028 // so we have to read it before we call VisitCXXMethodDecl.
2029 D->setExplicitSpecifier(Record.readExplicitSpec());
2030 if (D->isInheritingConstructor()) {
2031 auto *Shadow = readDeclAs<ConstructorUsingShadowDecl>();
2032 auto *Ctor = readDeclAs<CXXConstructorDecl>();
2033 *D->getTrailingObjects<InheritedConstructor>() =
2034 InheritedConstructor(Shadow, Ctor);
2035 }
2036
2037 VisitCXXMethodDecl(D);
2038}
2039
2040void ASTDeclReader::VisitCXXDestructorDecl(CXXDestructorDecl *D) {
2041 VisitCXXMethodDecl(D);
2042
2043 if (auto *OperatorDelete = readDeclAs<FunctionDecl>()) {
2044 CXXDestructorDecl *Canon = D->getCanonicalDecl();
2045 auto *ThisArg = Record.readExpr();
2046 // FIXME: Check consistency if we have an old and new operator delete.
2047 if (!Canon->OperatorDelete) {
2048 Canon->OperatorDelete = OperatorDelete;
2049 Canon->OperatorDeleteThisArg = ThisArg;
2050 }
2051 }
2052}
2053
2054void ASTDeclReader::VisitCXXConversionDecl(CXXConversionDecl *D) {
2055 D->setExplicitSpecifier(Record.readExplicitSpec());
2056 VisitCXXMethodDecl(D);
2057}
2058
2059void ASTDeclReader::VisitImportDecl(ImportDecl *D) {
2060 VisitDecl(D);
2061 D->ImportedModule = readModule();
2062 D->setImportComplete(Record.readInt());
2063 auto *StoredLocs = D->getTrailingObjects<SourceLocation>();
2064 for (unsigned I = 0, N = Record.back(); I != N; ++I)
2065 StoredLocs[I] = readSourceLocation();
2066 Record.skipInts(1); // The number of stored source locations.
2067}
2068
2069void ASTDeclReader::VisitAccessSpecDecl(AccessSpecDecl *D) {
2070 VisitDecl(D);
2071 D->setColonLoc(readSourceLocation());
2072}
2073
2074void ASTDeclReader::VisitFriendDecl(FriendDecl *D) {
2075 VisitDecl(D);
2076 if (Record.readInt()) // hasFriendDecl
2077 D->Friend = readDeclAs<NamedDecl>();
2078 else
2079 D->Friend = readTypeSourceInfo();
2080 for (unsigned i = 0; i != D->NumTPLists; ++i)
2081 D->getTrailingObjects<TemplateParameterList *>()[i] =
2082 Record.readTemplateParameterList();
2083 D->NextFriend = readDeclID();
2084 D->UnsupportedFriend = (Record.readInt() != 0);
2085 D->FriendLoc = readSourceLocation();
2086}
2087
2088void ASTDeclReader::VisitFriendTemplateDecl(FriendTemplateDecl *D) {
2089 VisitDecl(D);
2090 unsigned NumParams = Record.readInt();
2091 D->NumParams = NumParams;
2092 D->Params = new TemplateParameterList*[NumParams];
2093 for (unsigned i = 0; i != NumParams; ++i)
2094 D->Params[i] = Record.readTemplateParameterList();
2095 if (Record.readInt()) // HasFriendDecl
2096 D->Friend = readDeclAs<NamedDecl>();
2097 else
2098 D->Friend = readTypeSourceInfo();
2099 D->FriendLoc = readSourceLocation();
2100}
2101
2102DeclID ASTDeclReader::VisitTemplateDecl(TemplateDecl *D) {
2103 VisitNamedDecl(D);
2104
2105 DeclID PatternID = readDeclID();
2106 auto *TemplatedDecl = cast_or_null<NamedDecl>(Reader.GetDecl(PatternID));
2107 TemplateParameterList *TemplateParams = Record.readTemplateParameterList();
2108 D->init(TemplatedDecl, TemplateParams);
2109
2110 return PatternID;
2111}
2112
2113void ASTDeclReader::VisitConceptDecl(ConceptDecl *D) {
2114 VisitTemplateDecl(D);
2115 D->ConstraintExpr = Record.readExpr();
2116 mergeMergeable(D);
2117}
2118
2119void ASTDeclReader::VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D) {
2120}
2121
2122ASTDeclReader::RedeclarableResult
2123ASTDeclReader::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) {
2124 RedeclarableResult Redecl = VisitRedeclarable(D);
2125
2126 // Make sure we've allocated the Common pointer first. We do this before
2127 // VisitTemplateDecl so that getCommonPtr() can be used during initialization.
2128 RedeclarableTemplateDecl *CanonD = D->getCanonicalDecl();
2129 if (!CanonD->Common) {
2130 CanonD->Common = CanonD->newCommon(Reader.getContext());
2131 Reader.PendingDefinitions.insert(CanonD);
2132 }
2133 D->Common = CanonD->Common;
2134
2135 // If this is the first declaration of the template, fill in the information
2136 // for the 'common' pointer.
2137 if (ThisDeclID == Redecl.getFirstID()) {
2138 if (auto *RTD = readDeclAs<RedeclarableTemplateDecl>()) {
2139 assert(RTD->getKind() == D->getKind() &&(static_cast <bool> (RTD->getKind() == D->getKind
() && "InstantiatedFromMemberTemplate kind mismatch")
? void (0) : __assert_fail ("RTD->getKind() == D->getKind() && \"InstantiatedFromMemberTemplate kind mismatch\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2140, __extension__ __PRETTY_FUNCTION__))
2140 "InstantiatedFromMemberTemplate kind mismatch")(static_cast <bool> (RTD->getKind() == D->getKind
() && "InstantiatedFromMemberTemplate kind mismatch")
? void (0) : __assert_fail ("RTD->getKind() == D->getKind() && \"InstantiatedFromMemberTemplate kind mismatch\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2140, __extension__ __PRETTY_FUNCTION__))
;
2141 D->setInstantiatedFromMemberTemplate(RTD);
2142 if (Record.readInt())
2143 D->setMemberSpecialization();
2144 }
2145 }
2146
2147 DeclID PatternID = VisitTemplateDecl(D);
2148 D->IdentifierNamespace = Record.readInt();
2149
2150 mergeRedeclarable(D, Redecl, PatternID);
2151
2152 // If we merged the template with a prior declaration chain, merge the common
2153 // pointer.
2154 // FIXME: Actually merge here, don't just overwrite.
2155 D->Common = D->getCanonicalDecl()->Common;
2156
2157 return Redecl;
2158}
2159
2160void ASTDeclReader::VisitClassTemplateDecl(ClassTemplateDecl *D) {
2161 RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
2162
2163 if (ThisDeclID == Redecl.getFirstID()) {
2164 // This ClassTemplateDecl owns a CommonPtr; read it to keep track of all of
2165 // the specializations.
2166 SmallVector<serialization::DeclID, 32> SpecIDs;
2167 readDeclIDList(SpecIDs);
2168 ASTDeclReader::AddLazySpecializations(D, SpecIDs);
2169 }
2170
2171 if (D->getTemplatedDecl()->TemplateOrInstantiation) {
2172 // We were loaded before our templated declaration was. We've not set up
2173 // its corresponding type yet (see VisitCXXRecordDeclImpl), so reconstruct
2174 // it now.
2175 Reader.getContext().getInjectedClassNameType(
2176 D->getTemplatedDecl(), D->getInjectedClassNameSpecialization());
2177 }
2178}
2179
2180void ASTDeclReader::VisitBuiltinTemplateDecl(BuiltinTemplateDecl *D) {
2181 llvm_unreachable("BuiltinTemplates are not serialized")::llvm::llvm_unreachable_internal("BuiltinTemplates are not serialized"
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2181)
;
2182}
2183
2184/// TODO: Unify with ClassTemplateDecl version?
2185/// May require unifying ClassTemplateDecl and
2186/// VarTemplateDecl beyond TemplateDecl...
2187void ASTDeclReader::VisitVarTemplateDecl(VarTemplateDecl *D) {
2188 RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
2189
2190 if (ThisDeclID == Redecl.getFirstID()) {
2191 // This VarTemplateDecl owns a CommonPtr; read it to keep track of all of
2192 // the specializations.
2193 SmallVector<serialization::DeclID, 32> SpecIDs;
2194 readDeclIDList(SpecIDs);
2195 ASTDeclReader::AddLazySpecializations(D, SpecIDs);
2196 }
2197}
2198
2199ASTDeclReader::RedeclarableResult
2200ASTDeclReader::VisitClassTemplateSpecializationDeclImpl(
2201 ClassTemplateSpecializationDecl *D) {
2202 RedeclarableResult Redecl = VisitCXXRecordDeclImpl(D);
2203
2204 ASTContext &C = Reader.getContext();
2205 if (Decl *InstD = readDecl()) {
2206 if (auto *CTD = dyn_cast<ClassTemplateDecl>(InstD)) {
2207 D->SpecializedTemplate = CTD;
2208 } else {
2209 SmallVector<TemplateArgument, 8> TemplArgs;
2210 Record.readTemplateArgumentList(TemplArgs);
2211 TemplateArgumentList *ArgList
2212 = TemplateArgumentList::CreateCopy(C, TemplArgs);
2213 auto *PS =
2214 new (C) ClassTemplateSpecializationDecl::
2215 SpecializedPartialSpecialization();
2216 PS->PartialSpecialization
2217 = cast<ClassTemplatePartialSpecializationDecl>(InstD);
2218 PS->TemplateArgs = ArgList;
2219 D->SpecializedTemplate = PS;
2220 }
2221 }
2222
2223 SmallVector<TemplateArgument, 8> TemplArgs;
2224 Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
2225 D->TemplateArgs = TemplateArgumentList::CreateCopy(C, TemplArgs);
2226 D->PointOfInstantiation = readSourceLocation();
2227 D->SpecializationKind = (TemplateSpecializationKind)Record.readInt();
2228
2229 bool writtenAsCanonicalDecl = Record.readInt();
2230 if (writtenAsCanonicalDecl) {
2231 auto *CanonPattern = readDeclAs<ClassTemplateDecl>();
2232 if (D->isCanonicalDecl()) { // It's kept in the folding set.
2233 // Set this as, or find, the canonical declaration for this specialization
2234 ClassTemplateSpecializationDecl *CanonSpec;
2235 if (auto *Partial = dyn_cast<ClassTemplatePartialSpecializationDecl>(D)) {
2236 CanonSpec = CanonPattern->getCommonPtr()->PartialSpecializations
2237 .GetOrInsertNode(Partial);
2238 } else {
2239 CanonSpec =
2240 CanonPattern->getCommonPtr()->Specializations.GetOrInsertNode(D);
2241 }
2242 // If there was already a canonical specialization, merge into it.
2243 if (CanonSpec != D) {
2244 mergeRedeclarable<TagDecl>(D, CanonSpec, Redecl);
2245
2246 // This declaration might be a definition. Merge with any existing
2247 // definition.
2248 if (auto *DDD = D->DefinitionData) {
2249 if (CanonSpec->DefinitionData)
2250 MergeDefinitionData(CanonSpec, std::move(*DDD));
2251 else
2252 CanonSpec->DefinitionData = D->DefinitionData;
2253 }
2254 D->DefinitionData = CanonSpec->DefinitionData;
2255 }
2256 }
2257 }
2258
2259 // Explicit info.
2260 if (TypeSourceInfo *TyInfo = readTypeSourceInfo()) {
2261 auto *ExplicitInfo =
2262 new (C) ClassTemplateSpecializationDecl::ExplicitSpecializationInfo;
2263 ExplicitInfo->TypeAsWritten = TyInfo;
2264 ExplicitInfo->ExternLoc = readSourceLocation();
2265 ExplicitInfo->TemplateKeywordLoc = readSourceLocation();
2266 D->ExplicitInfo = ExplicitInfo;
2267 }
2268
2269 return Redecl;
2270}
2271
2272void ASTDeclReader::VisitClassTemplatePartialSpecializationDecl(
2273 ClassTemplatePartialSpecializationDecl *D) {
2274 // We need to read the template params first because redeclarable is going to
2275 // need them for profiling
2276 TemplateParameterList *Params = Record.readTemplateParameterList();
2277 D->TemplateParams = Params;
2278 D->ArgsAsWritten = Record.readASTTemplateArgumentListInfo();
2279
2280 RedeclarableResult Redecl = VisitClassTemplateSpecializationDeclImpl(D);
2281
2282 // These are read/set from/to the first declaration.
2283 if (ThisDeclID == Redecl.getFirstID()) {
2284 D->InstantiatedFromMember.setPointer(
2285 readDeclAs<ClassTemplatePartialSpecializationDecl>());
2286 D->InstantiatedFromMember.setInt(Record.readInt());
2287 }
2288}
2289
2290void ASTDeclReader::VisitClassScopeFunctionSpecializationDecl(
2291 ClassScopeFunctionSpecializationDecl *D) {
2292 VisitDecl(D);
2293 D->Specialization = readDeclAs<CXXMethodDecl>();
2294 if (Record.readInt())
2295 D->TemplateArgs = Record.readASTTemplateArgumentListInfo();
2296}
2297
2298void ASTDeclReader::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) {
2299 RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
2300
2301 if (ThisDeclID == Redecl.getFirstID()) {
2302 // This FunctionTemplateDecl owns a CommonPtr; read it.
2303 SmallVector<serialization::DeclID, 32> SpecIDs;
2304 readDeclIDList(SpecIDs);
2305 ASTDeclReader::AddLazySpecializations(D, SpecIDs);
2306 }
2307}
2308
2309/// TODO: Unify with ClassTemplateSpecializationDecl version?
2310/// May require unifying ClassTemplate(Partial)SpecializationDecl and
2311/// VarTemplate(Partial)SpecializationDecl with a new data
2312/// structure Template(Partial)SpecializationDecl, and
2313/// using Template(Partial)SpecializationDecl as input type.
2314ASTDeclReader::RedeclarableResult
2315ASTDeclReader::VisitVarTemplateSpecializationDeclImpl(
2316 VarTemplateSpecializationDecl *D) {
2317 RedeclarableResult Redecl = VisitVarDeclImpl(D);
2318
2319 ASTContext &C = Reader.getContext();
2320 if (Decl *InstD = readDecl()) {
2321 if (auto *VTD = dyn_cast<VarTemplateDecl>(InstD)) {
2322 D->SpecializedTemplate = VTD;
2323 } else {
2324 SmallVector<TemplateArgument, 8> TemplArgs;
2325 Record.readTemplateArgumentList(TemplArgs);
2326 TemplateArgumentList *ArgList = TemplateArgumentList::CreateCopy(
2327 C, TemplArgs);
2328 auto *PS =
2329 new (C)
2330 VarTemplateSpecializationDecl::SpecializedPartialSpecialization();
2331 PS->PartialSpecialization =
2332 cast<VarTemplatePartialSpecializationDecl>(InstD);
2333 PS->TemplateArgs = ArgList;
2334 D->SpecializedTemplate = PS;
2335 }
2336 }
2337
2338 // Explicit info.
2339 if (TypeSourceInfo *TyInfo = readTypeSourceInfo()) {
2340 auto *ExplicitInfo =
2341 new (C) VarTemplateSpecializationDecl::ExplicitSpecializationInfo;
2342 ExplicitInfo->TypeAsWritten = TyInfo;
2343 ExplicitInfo->ExternLoc = readSourceLocation();
2344 ExplicitInfo->TemplateKeywordLoc = readSourceLocation();
2345 D->ExplicitInfo = ExplicitInfo;
2346 }
2347
2348 SmallVector<TemplateArgument, 8> TemplArgs;
2349 Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
2350 D->TemplateArgs = TemplateArgumentList::CreateCopy(C, TemplArgs);
2351 D->PointOfInstantiation = readSourceLocation();
2352 D->SpecializationKind = (TemplateSpecializationKind)Record.readInt();
2353 D->IsCompleteDefinition = Record.readInt();
2354
2355 bool writtenAsCanonicalDecl = Record.readInt();
2356 if (writtenAsCanonicalDecl) {
2357 auto *CanonPattern = readDeclAs<VarTemplateDecl>();
2358 if (D->isCanonicalDecl()) { // It's kept in the folding set.
2359 // FIXME: If it's already present, merge it.
2360 if (auto *Partial = dyn_cast<VarTemplatePartialSpecializationDecl>(D)) {
2361 CanonPattern->getCommonPtr()->PartialSpecializations
2362 .GetOrInsertNode(Partial);
2363 } else {
2364 CanonPattern->getCommonPtr()->Specializations.GetOrInsertNode(D);
2365 }
2366 }
2367 }
2368
2369 return Redecl;
2370}
2371
2372/// TODO: Unify with ClassTemplatePartialSpecializationDecl version?
2373/// May require unifying ClassTemplate(Partial)SpecializationDecl and
2374/// VarTemplate(Partial)SpecializationDecl with a new data
2375/// structure Template(Partial)SpecializationDecl, and
2376/// using Template(Partial)SpecializationDecl as input type.
2377void ASTDeclReader::VisitVarTemplatePartialSpecializationDecl(
2378 VarTemplatePartialSpecializationDecl *D) {
2379 TemplateParameterList *Params = Record.readTemplateParameterList();
2380 D->TemplateParams = Params;
2381 D->ArgsAsWritten = Record.readASTTemplateArgumentListInfo();
2382
2383 RedeclarableResult Redecl = VisitVarTemplateSpecializationDeclImpl(D);
2384
2385 // These are read/set from/to the first declaration.
2386 if (ThisDeclID == Redecl.getFirstID()) {
2387 D->InstantiatedFromMember.setPointer(
2388 readDeclAs<VarTemplatePartialSpecializationDecl>());
2389 D->InstantiatedFromMember.setInt(Record.readInt());
2390 }
2391}
2392
2393void ASTDeclReader::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
2394 VisitTypeDecl(D);
2395
2396 D->setDeclaredWithTypename(Record.readInt());
2397
2398 if (Record.readBool()) {
2399 NestedNameSpecifierLoc NNS = Record.readNestedNameSpecifierLoc();
2400 DeclarationNameInfo DN = Record.readDeclarationNameInfo();
2401 ConceptDecl *NamedConcept = Record.readDeclAs<ConceptDecl>();
2402 const ASTTemplateArgumentListInfo *ArgsAsWritten = nullptr;
2403 if (Record.readBool())
2404 ArgsAsWritten = Record.readASTTemplateArgumentListInfo();
2405 Expr *ImmediatelyDeclaredConstraint = Record.readExpr();
2406 D->setTypeConstraint(NNS, DN, /*FoundDecl=*/nullptr, NamedConcept,
2407 ArgsAsWritten, ImmediatelyDeclaredConstraint);
2408 if ((D->ExpandedParameterPack = Record.readInt()))
2409 D->NumExpanded = Record.readInt();
2410 }
2411
2412 if (Record.readInt())
2413 D->setDefaultArgument(readTypeSourceInfo());
2414}
2415
2416void ASTDeclReader::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
2417 VisitDeclaratorDecl(D);
2418 // TemplateParmPosition.
2419 D->setDepth(Record.readInt());
2420 D->setPosition(Record.readInt());
2421 if (D->hasPlaceholderTypeConstraint())
2422 D->setPlaceholderTypeConstraint(Record.readExpr());
2423 if (D->isExpandedParameterPack()) {
2424 auto TypesAndInfos =
2425 D->getTrailingObjects<std::pair<QualType, TypeSourceInfo *>>();
2426 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) {
2427 new (&TypesAndInfos[I].first) QualType(Record.readType());
2428 TypesAndInfos[I].second = readTypeSourceInfo();
2429 }
2430 } else {
2431 // Rest of NonTypeTemplateParmDecl.
2432 D->ParameterPack = Record.readInt();
2433 if (Record.readInt())
2434 D->setDefaultArgument(Record.readExpr());
2435 }
2436}
2437
2438void ASTDeclReader::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
2439 VisitTemplateDecl(D);
2440 // TemplateParmPosition.
2441 D->setDepth(Record.readInt());
2442 D->setPosition(Record.readInt());
2443 if (D->isExpandedParameterPack()) {
2444 auto **Data = D->getTrailingObjects<TemplateParameterList *>();
2445 for (unsigned I = 0, N = D->getNumExpansionTemplateParameters();
2446 I != N; ++I)
2447 Data[I] = Record.readTemplateParameterList();
2448 } else {
2449 // Rest of TemplateTemplateParmDecl.
2450 D->ParameterPack = Record.readInt();
2451 if (Record.readInt())
2452 D->setDefaultArgument(Reader.getContext(),
2453 Record.readTemplateArgumentLoc());
2454 }
2455}
2456
2457void ASTDeclReader::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) {
2458 VisitRedeclarableTemplateDecl(D);
2459}
2460
2461void ASTDeclReader::VisitStaticAssertDecl(StaticAssertDecl *D) {
2462 VisitDecl(D);
2463 D->AssertExprAndFailed.setPointer(Record.readExpr());
2464 D->AssertExprAndFailed.setInt(Record.readInt());
2465 D->Message = cast_or_null<StringLiteral>(Record.readExpr());
2466 D->RParenLoc = readSourceLocation();
2467}
2468
2469void ASTDeclReader::VisitEmptyDecl(EmptyDecl *D) {
2470 VisitDecl(D);
2471}
2472
2473void ASTDeclReader::VisitLifetimeExtendedTemporaryDecl(
2474 LifetimeExtendedTemporaryDecl *D) {
2475 VisitDecl(D);
2476 D->ExtendingDecl = readDeclAs<ValueDecl>();
2477 D->ExprWithTemporary = Record.readStmt();
2478 if (Record.readInt()) {
2479 D->Value = new (D->getASTContext()) APValue(Record.readAPValue());
2480 D->getASTContext().addDestruction(D->Value);
2481 }
2482 D->ManglingNumber = Record.readInt();
2483 mergeMergeable(D);
2484}
2485
2486std::pair<uint64_t, uint64_t>
2487ASTDeclReader::VisitDeclContext(DeclContext *DC) {
2488 uint64_t LexicalOffset = ReadLocalOffset();
2489 uint64_t VisibleOffset = ReadLocalOffset();
2490 return std::make_pair(LexicalOffset, VisibleOffset);
2491}
2492
2493template <typename T>
2494ASTDeclReader::RedeclarableResult
2495ASTDeclReader::VisitRedeclarable(Redeclarable<T> *D) {
2496 DeclID FirstDeclID = readDeclID();
2497 Decl *MergeWith = nullptr;
2498
2499 bool IsKeyDecl = ThisDeclID == FirstDeclID;
1
Assuming 'FirstDeclID' is not equal to field 'ThisDeclID'
2500 bool IsFirstLocalDecl = false;
2501
2502 uint64_t RedeclOffset = 0;
2503
2504 // 0 indicates that this declaration was the only declaration of its entity,
2505 // and is used for space optimization.
2506 if (FirstDeclID == 0) {
2
Assuming 'FirstDeclID' is equal to 0
3
Taking true branch
2507 FirstDeclID = ThisDeclID;
2508 IsKeyDecl = true;
2509 IsFirstLocalDecl = true;
2510 } else if (unsigned N = Record.readInt()) {
2511 // This declaration was the first local declaration, but may have imported
2512 // other declarations.
2513 IsKeyDecl = N == 1;
2514 IsFirstLocalDecl = true;
2515
2516 // We have some declarations that must be before us in our redeclaration
2517 // chain. Read them now, and remember that we ought to merge with one of
2518 // them.
2519 // FIXME: Provide a known merge target to the second and subsequent such
2520 // declaration.
2521 for (unsigned I = 0; I != N - 1; ++I)
2522 MergeWith = readDecl();
2523
2524 RedeclOffset = ReadLocalOffset();
2525 } else {
2526 // This declaration was not the first local declaration. Read the first
2527 // local declaration now, to trigger the import of other redeclarations.
2528 (void)readDecl();
2529 }
2530
2531 auto *FirstDecl = cast_or_null<T>(Reader.GetDecl(FirstDeclID));
4
Assuming null pointer is passed into cast
5
'FirstDecl' initialized to a null pointer value
2532 if (FirstDecl != D) {
6
Assuming 'FirstDecl' is not equal to 'D'
7
Taking true branch
2533 // We delay loading of the redeclaration chain to avoid deeply nested calls.
2534 // We temporarily set the first (canonical) declaration as the previous one
2535 // which is the one that matters and mark the real previous DeclID to be
2536 // loaded & attached later on.
2537 D->RedeclLink = Redeclarable<T>::PreviousDeclLink(FirstDecl);
2538 D->First = FirstDecl->getCanonicalDecl();
8
Called C++ object pointer is null
2539 }
2540
2541 auto *DAsT = static_cast<T *>(D);
2542
2543 // Note that we need to load local redeclarations of this decl and build a
2544 // decl chain for them. This must happen *after* we perform the preloading
2545 // above; this ensures that the redeclaration chain is built in the correct
2546 // order.
2547 if (IsFirstLocalDecl)
2548 Reader.PendingDeclChains.push_back(std::make_pair(DAsT, RedeclOffset));
2549
2550 return RedeclarableResult(MergeWith, FirstDeclID, IsKeyDecl);
2551}
2552
2553/// Attempts to merge the given declaration (D) with another declaration
2554/// of the same entity.
2555template<typename T>
2556void ASTDeclReader::mergeRedeclarable(Redeclarable<T> *DBase,
2557 RedeclarableResult &Redecl,
2558 DeclID TemplatePatternID) {
2559 // If modules are not available, there is no reason to perform this merge.
2560 if (!Reader.getContext().getLangOpts().Modules)
2561 return;
2562
2563 // If we're not the canonical declaration, we don't need to merge.
2564 if (!DBase->isFirstDecl())
2565 return;
2566
2567 auto *D = static_cast<T *>(DBase);
2568
2569 if (auto *Existing = Redecl.getKnownMergeTarget())
2570 // We already know of an existing declaration we should merge with.
2571 mergeRedeclarable(D, cast<T>(Existing), Redecl, TemplatePatternID);
2572 else if (FindExistingResult ExistingRes = findExisting(D))
2573 if (T *Existing = ExistingRes)
2574 mergeRedeclarable(D, Existing, Redecl, TemplatePatternID);
2575}
2576
2577/// "Cast" to type T, asserting if we don't have an implicit conversion.
2578/// We use this to put code in a template that will only be valid for certain
2579/// instantiations.
2580template<typename T> static T assert_cast(T t) { return t; }
2581template<typename T> static T assert_cast(...) {
2582 llvm_unreachable("bad assert_cast")::llvm::llvm_unreachable_internal("bad assert_cast", "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2582)
;
2583}
2584
2585/// Merge together the pattern declarations from two template
2586/// declarations.
2587void ASTDeclReader::mergeTemplatePattern(RedeclarableTemplateDecl *D,
2588 RedeclarableTemplateDecl *Existing,
2589 DeclID DsID, bool IsKeyDecl) {
2590 auto *DPattern = D->getTemplatedDecl();
2591 auto *ExistingPattern = Existing->getTemplatedDecl();
2592 RedeclarableResult Result(/*MergeWith*/ ExistingPattern,
2593 DPattern->getCanonicalDecl()->getGlobalID(),
2594 IsKeyDecl);
2595
2596 if (auto *DClass = dyn_cast<CXXRecordDecl>(DPattern)) {
2597 // Merge with any existing definition.
2598 // FIXME: This is duplicated in several places. Refactor.
2599 auto *ExistingClass =
2600 cast<CXXRecordDecl>(ExistingPattern)->getCanonicalDecl();
2601 if (auto *DDD = DClass->DefinitionData) {
2602 if (ExistingClass->DefinitionData) {
2603 MergeDefinitionData(ExistingClass, std::move(*DDD));
2604 } else {
2605 ExistingClass->DefinitionData = DClass->DefinitionData;
2606 // We may have skipped this before because we thought that DClass
2607 // was the canonical declaration.
2608 Reader.PendingDefinitions.insert(DClass);
2609 }
2610 }
2611 DClass->DefinitionData = ExistingClass->DefinitionData;
2612
2613 return mergeRedeclarable(DClass, cast<TagDecl>(ExistingPattern),
2614 Result);
2615 }
2616 if (auto *DFunction = dyn_cast<FunctionDecl>(DPattern))
2617 return mergeRedeclarable(DFunction, cast<FunctionDecl>(ExistingPattern),
2618 Result);
2619 if (auto *DVar = dyn_cast<VarDecl>(DPattern))
2620 return mergeRedeclarable(DVar, cast<VarDecl>(ExistingPattern), Result);
2621 if (auto *DAlias = dyn_cast<TypeAliasDecl>(DPattern))
2622 return mergeRedeclarable(DAlias, cast<TypedefNameDecl>(ExistingPattern),
2623 Result);
2624 llvm_unreachable("merged an unknown kind of redeclarable template")::llvm::llvm_unreachable_internal("merged an unknown kind of redeclarable template"
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2624)
;
2625}
2626
2627/// Attempts to merge the given declaration (D) with another declaration
2628/// of the same entity.
2629template<typename T>
2630void ASTDeclReader::mergeRedeclarable(Redeclarable<T> *DBase, T *Existing,
2631 RedeclarableResult &Redecl,
2632 DeclID TemplatePatternID) {
2633 auto *D = static_cast<T *>(DBase);
2634 T *ExistingCanon = Existing->getCanonicalDecl();
2635 T *DCanon = D->getCanonicalDecl();
2636 if (ExistingCanon != DCanon) {
2637 assert(DCanon->getGlobalID() == Redecl.getFirstID() &&(static_cast <bool> (DCanon->getGlobalID() == Redecl
.getFirstID() && "already merged this declaration") ?
void (0) : __assert_fail ("DCanon->getGlobalID() == Redecl.getFirstID() && \"already merged this declaration\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2638, __extension__ __PRETTY_FUNCTION__))
2638 "already merged this declaration")(static_cast <bool> (DCanon->getGlobalID() == Redecl
.getFirstID() && "already merged this declaration") ?
void (0) : __assert_fail ("DCanon->getGlobalID() == Redecl.getFirstID() && \"already merged this declaration\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2638, __extension__ __PRETTY_FUNCTION__))
;
2639
2640 // Have our redeclaration link point back at the canonical declaration
2641 // of the existing declaration, so that this declaration has the
2642 // appropriate canonical declaration.
2643 D->RedeclLink = Redeclarable<T>::PreviousDeclLink(ExistingCanon);
2644 D->First = ExistingCanon;
2645 ExistingCanon->Used |= D->Used;
2646 D->Used = false;
2647
2648 // When we merge a namespace, update its pointer to the first namespace.
2649 // We cannot have loaded any redeclarations of this declaration yet, so
2650 // there's nothing else that needs to be updated.
2651 if (auto *Namespace = dyn_cast<NamespaceDecl>(D))
2652 Namespace->AnonOrFirstNamespaceAndInline.setPointer(
2653 assert_cast<NamespaceDecl*>(ExistingCanon));
2654
2655 // When we merge a template, merge its pattern.
2656 if (auto *DTemplate = dyn_cast<RedeclarableTemplateDecl>(D))
2657 mergeTemplatePattern(
2658 DTemplate, assert_cast<RedeclarableTemplateDecl*>(ExistingCanon),
2659 TemplatePatternID, Redecl.isKeyDecl());
2660
2661 // If this declaration is a key declaration, make a note of that.
2662 if (Redecl.isKeyDecl())
2663 Reader.KeyDecls[ExistingCanon].push_back(Redecl.getFirstID());
2664 }
2665}
2666
2667/// ODR-like semantics for C/ObjC allow us to merge tag types and a structural
2668/// check in Sema guarantees the types can be merged (see C11 6.2.7/1 or C89
2669/// 6.1.2.6/1). Although most merging is done in Sema, we need to guarantee
2670/// that some types are mergeable during deserialization, otherwise name
2671/// lookup fails. This is the case for EnumConstantDecl.
2672static bool allowODRLikeMergeInC(NamedDecl *ND) {
2673 if (!ND)
2674 return false;
2675 // TODO: implement merge for other necessary decls.
2676 if (isa<EnumConstantDecl, FieldDecl, IndirectFieldDecl>(ND))
2677 return true;
2678 return false;
2679}
2680
2681/// Attempts to merge LifetimeExtendedTemporaryDecl with
2682/// identical class definitions from two different modules.
2683void ASTDeclReader::mergeMergeable(LifetimeExtendedTemporaryDecl *D) {
2684 // If modules are not available, there is no reason to perform this merge.
2685 if (!Reader.getContext().getLangOpts().Modules)
2686 return;
2687
2688 LifetimeExtendedTemporaryDecl *LETDecl = D;
2689
2690 LifetimeExtendedTemporaryDecl *&LookupResult =
2691 Reader.LETemporaryForMerging[std::make_pair(
2692 LETDecl->getExtendingDecl(), LETDecl->getManglingNumber())];
2693 if (LookupResult)
2694 Reader.getContext().setPrimaryMergedDecl(LETDecl,
2695 LookupResult->getCanonicalDecl());
2696 else
2697 LookupResult = LETDecl;
2698}
2699
2700/// Attempts to merge the given declaration (D) with another declaration
2701/// of the same entity, for the case where the entity is not actually
2702/// redeclarable. This happens, for instance, when merging the fields of
2703/// identical class definitions from two different modules.
2704template<typename T>
2705void ASTDeclReader::mergeMergeable(Mergeable<T> *D) {
2706 // If modules are not available, there is no reason to perform this merge.
2707 if (!Reader.getContext().getLangOpts().Modules)
2708 return;
2709
2710 // ODR-based merging is performed in C++ and in some cases (tag types) in C.
2711 // Note that C identically-named things in different translation units are
2712 // not redeclarations, but may still have compatible types, where ODR-like
2713 // semantics may apply.
2714 if (!Reader.getContext().getLangOpts().CPlusPlus &&
2715 !allowODRLikeMergeInC(dyn_cast<NamedDecl>(static_cast<T*>(D))))
2716 return;
2717
2718 if (FindExistingResult ExistingRes = findExisting(static_cast<T*>(D)))
2719 if (T *Existing = ExistingRes)
2720 Reader.getContext().setPrimaryMergedDecl(static_cast<T *>(D),
2721 Existing->getCanonicalDecl());
2722}
2723
2724void ASTDeclReader::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) {
2725 Record.readOMPChildren(D->Data);
2726 VisitDecl(D);
2727}
2728
2729void ASTDeclReader::VisitOMPAllocateDecl(OMPAllocateDecl *D) {
2730 Record.readOMPChildren(D->Data);
2731 VisitDecl(D);
2732}
2733
2734void ASTDeclReader::VisitOMPRequiresDecl(OMPRequiresDecl * D) {
2735 Record.readOMPChildren(D->Data);
2736 VisitDecl(D);
2737}
2738
2739void ASTDeclReader::VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D) {
2740 VisitValueDecl(D);
2741 D->setLocation(readSourceLocation());
2742 Expr *In = Record.readExpr();
2743 Expr *Out = Record.readExpr();
2744 D->setCombinerData(In, Out);
2745 Expr *Combiner = Record.readExpr();
2746 D->setCombiner(Combiner);
2747 Expr *Orig = Record.readExpr();
2748 Expr *Priv = Record.readExpr();
2749 D->setInitializerData(Orig, Priv);
2750 Expr *Init = Record.readExpr();
2751 auto IK = static_cast<OMPDeclareReductionDecl::InitKind>(Record.readInt());
2752 D->setInitializer(Init, IK);
2753 D->PrevDeclInScope = readDeclID();
2754}
2755
2756void ASTDeclReader::VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D) {
2757 Record.readOMPChildren(D->Data);
2758 VisitValueDecl(D);
2759 D->VarName = Record.readDeclarationName();
2760 D->PrevDeclInScope = readDeclID();
2761}
2762
2763void ASTDeclReader::VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D) {
2764 VisitVarDecl(D);
2765}
2766
2767//===----------------------------------------------------------------------===//
2768// Attribute Reading
2769//===----------------------------------------------------------------------===//
2770
2771namespace {
2772class AttrReader {
2773 ASTRecordReader &Reader;
2774
2775public:
2776 AttrReader(ASTRecordReader &Reader) : Reader(Reader) {}
2777
2778 uint64_t readInt() {
2779 return Reader.readInt();
2780 }
2781
2782 SourceRange readSourceRange() {
2783 return Reader.readSourceRange();
2784 }
2785
2786 SourceLocation readSourceLocation() {
2787 return Reader.readSourceLocation();
2788 }
2789
2790 Expr *readExpr() { return Reader.readExpr(); }
2791
2792 std::string readString() {
2793 return Reader.readString();
2794 }
2795
2796 TypeSourceInfo *readTypeSourceInfo() {
2797 return Reader.readTypeSourceInfo();
2798 }
2799
2800 IdentifierInfo *readIdentifier() {
2801 return Reader.readIdentifier();
2802 }
2803
2804 VersionTuple readVersionTuple() {
2805 return Reader.readVersionTuple();
2806 }
2807
2808 OMPTraitInfo *readOMPTraitInfo() { return Reader.readOMPTraitInfo(); }
2809
2810 template <typename T> T *GetLocalDeclAs(uint32_t LocalID) {
2811 return Reader.GetLocalDeclAs<T>(LocalID);
2812 }
2813};
2814}
2815
2816Attr *ASTRecordReader::readAttr() {
2817 AttrReader Record(*this);
2818 auto V = Record.readInt();
2819 if (!V)
2820 return nullptr;
2821
2822 Attr *New = nullptr;
2823 // Kind is stored as a 1-based integer because 0 is used to indicate a null
2824 // Attr pointer.
2825 auto Kind = static_cast<attr::Kind>(V - 1);
2826 ASTContext &Context = getContext();
2827
2828 IdentifierInfo *AttrName = Record.readIdentifier();
2829 IdentifierInfo *ScopeName = Record.readIdentifier();
2830 SourceRange AttrRange = Record.readSourceRange();
2831 SourceLocation ScopeLoc = Record.readSourceLocation();
2832 unsigned ParsedKind = Record.readInt();
2833 unsigned Syntax = Record.readInt();
2834 unsigned SpellingIndex = Record.readInt();
2835
2836 AttributeCommonInfo Info(AttrName, ScopeName, AttrRange, ScopeLoc,
2837 AttributeCommonInfo::Kind(ParsedKind),
2838 AttributeCommonInfo::Syntax(Syntax), SpellingIndex);
2839
2840#include "clang/Serialization/AttrPCHRead.inc"
2841
2842 assert(New && "Unable to decode attribute?")(static_cast <bool> (New && "Unable to decode attribute?"
) ? void (0) : __assert_fail ("New && \"Unable to decode attribute?\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2842, __extension__ __PRETTY_FUNCTION__))
;
2843 return New;
2844}
2845
2846/// Reads attributes from the current stream position.
2847void ASTRecordReader::readAttributes(AttrVec &Attrs) {
2848 for (unsigned I = 0, E = readInt(); I != E; ++I)
2849 Attrs.push_back(readAttr());
2850}
2851
2852//===----------------------------------------------------------------------===//
2853// ASTReader Implementation
2854//===----------------------------------------------------------------------===//
2855
2856/// Note that we have loaded the declaration with the given
2857/// Index.
2858///
2859/// This routine notes that this declaration has already been loaded,
2860/// so that future GetDecl calls will return this declaration rather
2861/// than trying to load a new declaration.
2862inline void ASTReader::LoadedDecl(unsigned Index, Decl *D) {
2863 assert(!DeclsLoaded[Index] && "Decl loaded twice?")(static_cast <bool> (!DeclsLoaded[Index] && "Decl loaded twice?"
) ? void (0) : __assert_fail ("!DeclsLoaded[Index] && \"Decl loaded twice?\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2863, __extension__ __PRETTY_FUNCTION__))
;
2864 DeclsLoaded[Index] = D;
2865}
2866
2867/// Determine whether the consumer will be interested in seeing
2868/// this declaration (via HandleTopLevelDecl).
2869///
2870/// This routine should return true for anything that might affect
2871/// code generation, e.g., inline function definitions, Objective-C
2872/// declarations with metadata, etc.
2873static bool isConsumerInterestedIn(ASTContext &Ctx, Decl *D, bool HasBody) {
2874 // An ObjCMethodDecl is never considered as "interesting" because its
2875 // implementation container always is.
2876
2877 // An ImportDecl or VarDecl imported from a module map module will get
2878 // emitted when we import the relevant module.
2879 if (isPartOfPerModuleInitializer(D)) {
2880 auto *M = D->getImportedOwningModule();
2881 if (M && M->Kind == Module::ModuleMapModule &&
2882 Ctx.DeclMustBeEmitted(D))
2883 return false;
2884 }
2885
2886 if (isa<FileScopeAsmDecl>(D) ||
2887 isa<ObjCProtocolDecl>(D) ||
2888 isa<ObjCImplDecl>(D) ||
2889 isa<ImportDecl>(D) ||
2890 isa<PragmaCommentDecl>(D) ||
2891 isa<PragmaDetectMismatchDecl>(D))
2892 return true;
2893 if (isa<OMPThreadPrivateDecl>(D) || isa<OMPDeclareReductionDecl>(D) ||
2894 isa<OMPDeclareMapperDecl>(D) || isa<OMPAllocateDecl>(D) ||
2895 isa<OMPRequiresDecl>(D))
2896 return !D->getDeclContext()->isFunctionOrMethod();
2897 if (const auto *Var = dyn_cast<VarDecl>(D))
2898 return Var->isFileVarDecl() &&
2899 (Var->isThisDeclarationADefinition() == VarDecl::Definition ||
2900 OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(Var));
2901 if (const auto *Func = dyn_cast<FunctionDecl>(D))
2902 return Func->doesThisDeclarationHaveABody() || HasBody;
2903
2904 if (auto *ES = D->getASTContext().getExternalSource())
2905 if (ES->hasExternalDefinitions(D) == ExternalASTSource::EK_Never)
2906 return true;
2907
2908 return false;
2909}
2910
2911/// Get the correct cursor and offset for loading a declaration.
2912ASTReader::RecordLocation
2913ASTReader::DeclCursorForID(DeclID ID, SourceLocation &Loc) {
2914 GlobalDeclMapType::iterator I = GlobalDeclMap.find(ID);
2915 assert(I != GlobalDeclMap.end() && "Corrupted global declaration map")(static_cast <bool> (I != GlobalDeclMap.end() &&
"Corrupted global declaration map") ? void (0) : __assert_fail
("I != GlobalDeclMap.end() && \"Corrupted global declaration map\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2915, __extension__ __PRETTY_FUNCTION__))
;
2916 ModuleFile *M = I->second;
2917 const DeclOffset &DOffs =
2918 M->DeclOffsets[ID - M->BaseDeclID - NUM_PREDEF_DECL_IDS];
2919 Loc = TranslateSourceLocation(*M, DOffs.getLocation());
2920 return RecordLocation(M, DOffs.getBitOffset(M->DeclsBlockStartOffset));
2921}
2922
2923ASTReader::RecordLocation ASTReader::getLocalBitOffset(uint64_t GlobalOffset) {
2924 auto I = GlobalBitOffsetsMap.find(GlobalOffset);
2925
2926 assert(I != GlobalBitOffsetsMap.end() && "Corrupted global bit offsets map")(static_cast <bool> (I != GlobalBitOffsetsMap.end() &&
"Corrupted global bit offsets map") ? void (0) : __assert_fail
("I != GlobalBitOffsetsMap.end() && \"Corrupted global bit offsets map\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2926, __extension__ __PRETTY_FUNCTION__))
;
2927 return RecordLocation(I->second, GlobalOffset - I->second->GlobalBitOffset);
2928}
2929
2930uint64_t ASTReader::getGlobalBitOffset(ModuleFile &M, uint64_t LocalOffset) {
2931 return LocalOffset + M.GlobalBitOffset;
2932}
2933
2934static bool isSameTemplateParameterList(const ASTContext &C,
2935 const TemplateParameterList *X,
2936 const TemplateParameterList *Y);
2937
2938/// Determine whether two template parameters are similar enough
2939/// that they may be used in declarations of the same template.
2940static bool isSameTemplateParameter(const NamedDecl *X,
2941 const NamedDecl *Y) {
2942 if (X->getKind() != Y->getKind())
2943 return false;
2944
2945 if (const auto *TX = dyn_cast<TemplateTypeParmDecl>(X)) {
2946 const auto *TY = cast<TemplateTypeParmDecl>(Y);
2947 if (TX->isParameterPack() != TY->isParameterPack())
2948 return false;
2949 if (TX->hasTypeConstraint() != TY->hasTypeConstraint())
2950 return false;
2951 const TypeConstraint *TXTC = TX->getTypeConstraint();
2952 const TypeConstraint *TYTC = TY->getTypeConstraint();
2953 if (!TXTC != !TYTC)
2954 return false;
2955 if (TXTC && TYTC) {
2956 if (TXTC->getNamedConcept() != TYTC->getNamedConcept())
2957 return false;
2958 if (TXTC->hasExplicitTemplateArgs() != TYTC->hasExplicitTemplateArgs())
2959 return false;
2960 if (TXTC->hasExplicitTemplateArgs()) {
2961 const auto *TXTCArgs = TXTC->getTemplateArgsAsWritten();
2962 const auto *TYTCArgs = TYTC->getTemplateArgsAsWritten();
2963 if (TXTCArgs->NumTemplateArgs != TYTCArgs->NumTemplateArgs)
2964 return false;
2965 llvm::FoldingSetNodeID XID, YID;
2966 for (const auto &ArgLoc : TXTCArgs->arguments())
2967 ArgLoc.getArgument().Profile(XID, X->getASTContext());
2968 for (const auto &ArgLoc : TYTCArgs->arguments())
2969 ArgLoc.getArgument().Profile(YID, Y->getASTContext());
2970 if (XID != YID)
2971 return false;
2972 }
2973 }
2974 return true;
2975 }
2976
2977 if (const auto *TX = dyn_cast<NonTypeTemplateParmDecl>(X)) {
2978 const auto *TY = cast<NonTypeTemplateParmDecl>(Y);
2979 return TX->isParameterPack() == TY->isParameterPack() &&
2980 TX->getASTContext().hasSameType(TX->getType(), TY->getType());
2981 }
2982
2983 const auto *TX = cast<TemplateTemplateParmDecl>(X);
2984 const auto *TY = cast<TemplateTemplateParmDecl>(Y);
2985 return TX->isParameterPack() == TY->isParameterPack() &&
2986 isSameTemplateParameterList(TX->getASTContext(),
2987 TX->getTemplateParameters(),
2988 TY->getTemplateParameters());
2989}
2990
2991static NamespaceDecl *getNamespace(const NestedNameSpecifier *X) {
2992 if (auto *NS = X->getAsNamespace())
2993 return NS;
2994 if (auto *NAS = X->getAsNamespaceAlias())
2995 return NAS->getNamespace();
2996 return nullptr;
2997}
2998
2999static bool isSameQualifier(const NestedNameSpecifier *X,
3000 const NestedNameSpecifier *Y) {
3001 if (auto *NSX = getNamespace(X)) {
3002 auto *NSY = getNamespace(Y);
3003 if (!NSY || NSX->getCanonicalDecl() != NSY->getCanonicalDecl())
3004 return false;
3005 } else if (X->getKind() != Y->getKind())
3006 return false;
3007
3008 // FIXME: For namespaces and types, we're permitted to check that the entity
3009 // is named via the same tokens. We should probably do so.
3010 switch (X->getKind()) {
3011 case NestedNameSpecifier::Identifier:
3012 if (X->getAsIdentifier() != Y->getAsIdentifier())
3013 return false;
3014 break;
3015 case NestedNameSpecifier::Namespace:
3016 case NestedNameSpecifier::NamespaceAlias:
3017 // We've already checked that we named the same namespace.
3018 break;
3019 case NestedNameSpecifier::TypeSpec:
3020 case NestedNameSpecifier::TypeSpecWithTemplate:
3021 if (X->getAsType()->getCanonicalTypeInternal() !=
3022 Y->getAsType()->getCanonicalTypeInternal())
3023 return false;
3024 break;
3025 case NestedNameSpecifier::Global:
3026 case NestedNameSpecifier::Super:
3027 return true;
3028 }
3029
3030 // Recurse into earlier portion of NNS, if any.
3031 auto *PX = X->getPrefix();
3032 auto *PY = Y->getPrefix();
3033 if (PX && PY)
3034 return isSameQualifier(PX, PY);
3035 return !PX && !PY;
3036}
3037
3038/// Determine whether two template parameter lists are similar enough
3039/// that they may be used in declarations of the same template.
3040static bool isSameTemplateParameterList(const ASTContext &C,
3041 const TemplateParameterList *X,
3042 const TemplateParameterList *Y) {
3043 if (X->size() != Y->size())
3044 return false;
3045
3046 for (unsigned I = 0, N = X->size(); I != N; ++I)
3047 if (!isSameTemplateParameter(X->getParam(I), Y->getParam(I)))
3048 return false;
3049
3050 const Expr *XRC = X->getRequiresClause();
3051 const Expr *YRC = Y->getRequiresClause();
3052 if (!XRC != !YRC)
3053 return false;
3054 if (XRC) {
3055 llvm::FoldingSetNodeID XRCID, YRCID;
3056 XRC->Profile(XRCID, C, /*Canonical=*/true);
3057 YRC->Profile(YRCID, C, /*Canonical=*/true);
3058 if (XRCID != YRCID)
3059 return false;
3060 }
3061
3062 return true;
3063}
3064
3065/// Determine whether the attributes we can overload on are identical for A and
3066/// B. Will ignore any overloadable attrs represented in the type of A and B.
3067static bool hasSameOverloadableAttrs(const FunctionDecl *A,
3068 const FunctionDecl *B) {
3069 // Note that pass_object_size attributes are represented in the function's
3070 // ExtParameterInfo, so we don't need to check them here.
3071
3072 llvm::FoldingSetNodeID Cand1ID, Cand2ID;
3073 auto AEnableIfAttrs = A->specific_attrs<EnableIfAttr>();
3074 auto BEnableIfAttrs = B->specific_attrs<EnableIfAttr>();
3075
3076 for (auto Pair : zip_longest(AEnableIfAttrs, BEnableIfAttrs)) {
3077 Optional<EnableIfAttr *> Cand1A = std::get<0>(Pair);
3078 Optional<EnableIfAttr *> Cand2A = std::get<1>(Pair);
3079
3080 // Return false if the number of enable_if attributes is different.
3081 if (!Cand1A || !Cand2A)
3082 return false;
3083
3084 Cand1ID.clear();
3085 Cand2ID.clear();
3086
3087 (*Cand1A)->getCond()->Profile(Cand1ID, A->getASTContext(), true);
3088 (*Cand2A)->getCond()->Profile(Cand2ID, B->getASTContext(), true);
3089
3090 // Return false if any of the enable_if expressions of A and B are
3091 // different.
3092 if (Cand1ID != Cand2ID)
3093 return false;
3094 }
3095 return true;
3096}
3097
3098/// Determine whether the two declarations refer to the same entity.
3099static bool isSameEntity(NamedDecl *X, NamedDecl *Y) {
3100 assert(X->getDeclName() == Y->getDeclName() && "Declaration name mismatch!")(static_cast <bool> (X->getDeclName() == Y->getDeclName
() && "Declaration name mismatch!") ? void (0) : __assert_fail
("X->getDeclName() == Y->getDeclName() && \"Declaration name mismatch!\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3100, __extension__ __PRETTY_FUNCTION__))
;
3101
3102 if (X == Y)
3103 return true;
3104
3105 // Must be in the same context.
3106 //
3107 // Note that we can't use DeclContext::Equals here, because the DeclContexts
3108 // could be two different declarations of the same function. (We will fix the
3109 // semantic DC to refer to the primary definition after merging.)
3110 if (!declaresSameEntity(cast<Decl>(X->getDeclContext()->getRedeclContext()),
3111 cast<Decl>(Y->getDeclContext()->getRedeclContext())))
3112 return false;
3113
3114 // Two typedefs refer to the same entity if they have the same underlying
3115 // type.
3116 if (const auto *TypedefX = dyn_cast<TypedefNameDecl>(X))
3117 if (const auto *TypedefY = dyn_cast<TypedefNameDecl>(Y))
3118 return X->getASTContext().hasSameType(TypedefX->getUnderlyingType(),
3119 TypedefY->getUnderlyingType());
3120
3121 // Must have the same kind.
3122 if (X->getKind() != Y->getKind())
3123 return false;
3124
3125 // Objective-C classes and protocols with the same name always match.
3126 if (isa<ObjCInterfaceDecl>(X) || isa<ObjCProtocolDecl>(X))
3127 return true;
3128
3129 if (isa<ClassTemplateSpecializationDecl>(X)) {
3130 // No need to handle these here: we merge them when adding them to the
3131 // template.
3132 return false;
3133 }
3134
3135 // Compatible tags match.
3136 if (const auto *TagX = dyn_cast<TagDecl>(X)) {
3137 const auto *TagY = cast<TagDecl>(Y);
3138 return (TagX->getTagKind() == TagY->getTagKind()) ||
3139 ((TagX->getTagKind() == TTK_Struct || TagX->getTagKind() == TTK_Class ||
3140 TagX->getTagKind() == TTK_Interface) &&
3141 (TagY->getTagKind() == TTK_Struct || TagY->getTagKind() == TTK_Class ||
3142 TagY->getTagKind() == TTK_Interface));
3143 }
3144
3145 // Functions with the same type and linkage match.
3146 // FIXME: This needs to cope with merging of prototyped/non-prototyped
3147 // functions, etc.
3148 if (const auto *FuncX = dyn_cast<FunctionDecl>(X)) {
3149 const auto *FuncY = cast<FunctionDecl>(Y);
3150 if (const auto *CtorX = dyn_cast<CXXConstructorDecl>(X)) {
3151 const auto *CtorY = cast<CXXConstructorDecl>(Y);
3152 if (CtorX->getInheritedConstructor() &&
3153 !isSameEntity(CtorX->getInheritedConstructor().getConstructor(),
3154 CtorY->getInheritedConstructor().getConstructor()))
3155 return false;
3156 }
3157
3158 if (FuncX->isMultiVersion() != FuncY->isMultiVersion())
3159 return false;
3160
3161 // Multiversioned functions with different feature strings are represented
3162 // as separate declarations.
3163 if (FuncX->isMultiVersion()) {
3164 const auto *TAX = FuncX->getAttr<TargetAttr>();
3165 const auto *TAY = FuncY->getAttr<TargetAttr>();
3166 assert(TAX && TAY && "Multiversion Function without target attribute")(static_cast <bool> (TAX && TAY && "Multiversion Function without target attribute"
) ? void (0) : __assert_fail ("TAX && TAY && \"Multiversion Function without target attribute\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3166, __extension__ __PRETTY_FUNCTION__))
;
3167
3168 if (TAX->getFeaturesStr() != TAY->getFeaturesStr())
3169 return false;
3170 }
3171
3172 ASTContext &C = FuncX->getASTContext();
3173
3174 const Expr *XRC = FuncX->getTrailingRequiresClause();
3175 const Expr *YRC = FuncY->getTrailingRequiresClause();
3176 if (!XRC != !YRC)
3177 return false;
3178 if (XRC) {
3179 llvm::FoldingSetNodeID XRCID, YRCID;
3180 XRC->Profile(XRCID, C, /*Canonical=*/true);
3181 YRC->Profile(YRCID, C, /*Canonical=*/true);
3182 if (XRCID != YRCID)
3183 return false;
3184 }
3185
3186 auto GetTypeAsWritten = [](const FunctionDecl *FD) {
3187 // Map to the first declaration that we've already merged into this one.
3188 // The TSI of redeclarations might not match (due to calling conventions
3189 // being inherited onto the type but not the TSI), but the TSI type of
3190 // the first declaration of the function should match across modules.
3191 FD = FD->getCanonicalDecl();
3192 return FD->getTypeSourceInfo() ? FD->getTypeSourceInfo()->getType()
3193 : FD->getType();
3194 };
3195 QualType XT = GetTypeAsWritten(FuncX), YT = GetTypeAsWritten(FuncY);
3196 if (!C.hasSameType(XT, YT)) {
3197 // We can get functions with different types on the redecl chain in C++17
3198 // if they have differing exception specifications and at least one of
3199 // the excpetion specs is unresolved.
3200 auto *XFPT = XT->getAs<FunctionProtoType>();
3201 auto *YFPT = YT->getAs<FunctionProtoType>();
3202 if (C.getLangOpts().CPlusPlus17 && XFPT && YFPT &&
3203 (isUnresolvedExceptionSpec(XFPT->getExceptionSpecType()) ||
3204 isUnresolvedExceptionSpec(YFPT->getExceptionSpecType())) &&
3205 C.hasSameFunctionTypeIgnoringExceptionSpec(XT, YT))
3206 return true;
3207 return false;
3208 }
3209
3210 return FuncX->getLinkageInternal() == FuncY->getLinkageInternal() &&
3211 hasSameOverloadableAttrs(FuncX, FuncY);
3212 }
3213
3214 // Variables with the same type and linkage match.
3215 if (const auto *VarX = dyn_cast<VarDecl>(X)) {
3216 const auto *VarY = cast<VarDecl>(Y);
3217 if (VarX->getLinkageInternal() == VarY->getLinkageInternal()) {
3218 ASTContext &C = VarX->getASTContext();
3219 if (C.hasSameType(VarX->getType(), VarY->getType()))
3220 return true;
3221
3222 // We can get decls with different types on the redecl chain. Eg.
3223 // template <typename T> struct S { static T Var[]; }; // #1
3224 // template <typename T> T S<T>::Var[sizeof(T)]; // #2
3225 // Only? happens when completing an incomplete array type. In this case
3226 // when comparing #1 and #2 we should go through their element type.
3227 const ArrayType *VarXTy = C.getAsArrayType(VarX->getType());
3228 const ArrayType *VarYTy = C.getAsArrayType(VarY->getType());
3229 if (!VarXTy || !VarYTy)
3230 return false;
3231 if (VarXTy->isIncompleteArrayType() || VarYTy->isIncompleteArrayType())
3232 return C.hasSameType(VarXTy->getElementType(), VarYTy->getElementType());
3233 }
3234 return false;
3235 }
3236
3237 // Namespaces with the same name and inlinedness match.
3238 if (const auto *NamespaceX = dyn_cast<NamespaceDecl>(X)) {
3239 const auto *NamespaceY = cast<NamespaceDecl>(Y);
3240 return NamespaceX->isInline() == NamespaceY->isInline();
3241 }
3242
3243 // Identical template names and kinds match if their template parameter lists
3244 // and patterns match.
3245 if (const auto *TemplateX = dyn_cast<TemplateDecl>(X)) {
3246 const auto *TemplateY = cast<TemplateDecl>(Y);
3247 return isSameEntity(TemplateX->getTemplatedDecl(),
3248 TemplateY->getTemplatedDecl()) &&
3249 isSameTemplateParameterList(TemplateX->getASTContext(),
3250 TemplateX->getTemplateParameters(),
3251 TemplateY->getTemplateParameters());
3252 }
3253
3254 // Fields with the same name and the same type match.
3255 if (const auto *FDX = dyn_cast<FieldDecl>(X)) {
3256 const auto *FDY = cast<FieldDecl>(Y);
3257 // FIXME: Also check the bitwidth is odr-equivalent, if any.
3258 return X->getASTContext().hasSameType(FDX->getType(), FDY->getType());
3259 }
3260
3261 // Indirect fields with the same target field match.
3262 if (const auto *IFDX = dyn_cast<IndirectFieldDecl>(X)) {
3263 const auto *IFDY = cast<IndirectFieldDecl>(Y);
3264 return IFDX->getAnonField()->getCanonicalDecl() ==
3265 IFDY->getAnonField()->getCanonicalDecl();
3266 }
3267
3268 // Enumerators with the same name match.
3269 if (isa<EnumConstantDecl>(X))
3270 // FIXME: Also check the value is odr-equivalent.
3271 return true;
3272
3273 // Using shadow declarations with the same target match.
3274 if (const auto *USX = dyn_cast<UsingShadowDecl>(X)) {
3275 const auto *USY = cast<UsingShadowDecl>(Y);
3276 return USX->getTargetDecl() == USY->getTargetDecl();
3277 }
3278
3279 // Using declarations with the same qualifier match. (We already know that
3280 // the name matches.)
3281 if (const auto *UX = dyn_cast<UsingDecl>(X)) {
3282 const auto *UY = cast<UsingDecl>(Y);
3283 return isSameQualifier(UX->getQualifier(), UY->getQualifier()) &&
3284 UX->hasTypename() == UY->hasTypename() &&
3285 UX->isAccessDeclaration() == UY->isAccessDeclaration();
3286 }
3287 if (const auto *UX = dyn_cast<UnresolvedUsingValueDecl>(X)) {
3288 const auto *UY = cast<UnresolvedUsingValueDecl>(Y);
3289 return isSameQualifier(UX->getQualifier(), UY->getQualifier()) &&
3290 UX->isAccessDeclaration() == UY->isAccessDeclaration();
3291 }
3292 if (const auto *UX = dyn_cast<UnresolvedUsingTypenameDecl>(X)) {
3293 return isSameQualifier(
3294 UX->getQualifier(),
3295 cast<UnresolvedUsingTypenameDecl>(Y)->getQualifier());
3296 }
3297
3298 // Using-pack declarations are only created by instantiation, and match if
3299 // they're instantiated from matching UnresolvedUsing...Decls.
3300 if (const auto *UX = dyn_cast<UsingPackDecl>(X)) {
3301 return declaresSameEntity(
3302 UX->getInstantiatedFromUsingDecl(),
3303 cast<UsingPackDecl>(Y)->getInstantiatedFromUsingDecl());
3304 }
3305
3306 // Namespace alias definitions with the same target match.
3307 if (const auto *NAX = dyn_cast<NamespaceAliasDecl>(X)) {
3308 const auto *NAY = cast<NamespaceAliasDecl>(Y);
3309 return NAX->getNamespace()->Equals(NAY->getNamespace());
3310 }
3311
3312 return false;
3313}
3314
3315/// Find the context in which we should search for previous declarations when
3316/// looking for declarations to merge.
3317DeclContext *ASTDeclReader::getPrimaryContextForMerging(ASTReader &Reader,
3318 DeclContext *DC) {
3319 if (auto *ND = dyn_cast<NamespaceDecl>(DC))
3320 return ND->getOriginalNamespace();
3321
3322 if (auto *RD = dyn_cast<CXXRecordDecl>(DC)) {
3323 // Try to dig out the definition.
3324 auto *DD = RD->DefinitionData;
3325 if (!DD)
3326 DD = RD->getCanonicalDecl()->DefinitionData;
3327
3328 // If there's no definition yet, then DC's definition is added by an update
3329 // record, but we've not yet loaded that update record. In this case, we
3330 // commit to DC being the canonical definition now, and will fix this when
3331 // we load the update record.
3332 if (!DD) {
3333 DD = new (Reader.getContext()) struct CXXRecordDecl::DefinitionData(RD);
3334 RD->setCompleteDefinition(true);
3335 RD->DefinitionData = DD;
3336 RD->getCanonicalDecl()->DefinitionData = DD;
3337
3338 // Track that we did this horrible thing so that we can fix it later.
3339 Reader.PendingFakeDefinitionData.insert(
3340 std::make_pair(DD, ASTReader::PendingFakeDefinitionKind::Fake));
3341 }
3342
3343 return DD->Definition;
3344 }
3345
3346 if (auto *RD = dyn_cast<RecordDecl>(DC))
3347 return RD->getDefinition();
3348
3349 if (auto *ED = dyn_cast<EnumDecl>(DC))
3350 return ED->getASTContext().getLangOpts().CPlusPlus? ED->getDefinition()
3351 : nullptr;
3352
3353 // We can see the TU here only if we have no Sema object. In that case,
3354 // there's no TU scope to look in, so using the DC alone is sufficient.
3355 if (auto *TU = dyn_cast<TranslationUnitDecl>(DC))
3356 return TU;
3357
3358 return nullptr;
3359}
3360
3361ASTDeclReader::FindExistingResult::~FindExistingResult() {
3362 // Record that we had a typedef name for linkage whether or not we merge
3363 // with that declaration.
3364 if (TypedefNameForLinkage) {
3365 DeclContext *DC = New->getDeclContext()->getRedeclContext();
3366 Reader.ImportedTypedefNamesForLinkage.insert(
3367 std::make_pair(std::make_pair(DC, TypedefNameForLinkage), New));
3368 return;
3369 }
3370
3371 if (!AddResult || Existing)
3372 return;
3373
3374 DeclarationName Name = New->getDeclName();
3375 DeclContext *DC = New->getDeclContext()->getRedeclContext();
3376 if (needsAnonymousDeclarationNumber(New)) {
3377 setAnonymousDeclForMerging(Reader, New->getLexicalDeclContext(),
3378 AnonymousDeclNumber, New);
3379 } else if (DC->isTranslationUnit() &&
3380 !Reader.getContext().getLangOpts().CPlusPlus) {
3381 if (Reader.getIdResolver().tryAddTopLevelDecl(New, Name))
3382 Reader.PendingFakeLookupResults[Name.getAsIdentifierInfo()]
3383 .push_back(New);
3384 } else if (DeclContext *MergeDC = getPrimaryContextForMerging(Reader, DC)) {
3385 // Add the declaration to its redeclaration context so later merging
3386 // lookups will find it.
3387 MergeDC->makeDeclVisibleInContextImpl(New, /*Internal*/true);
3388 }
3389}
3390
3391/// Find the declaration that should be merged into, given the declaration found
3392/// by name lookup. If we're merging an anonymous declaration within a typedef,
3393/// we need a matching typedef, and we merge with the type inside it.
3394static NamedDecl *getDeclForMerging(NamedDecl *Found,
3395 bool IsTypedefNameForLinkage) {
3396 if (!IsTypedefNameForLinkage)
3397 return Found;
3398
3399 // If we found a typedef declaration that gives a name to some other
3400 // declaration, then we want that inner declaration. Declarations from
3401 // AST files are handled via ImportedTypedefNamesForLinkage.
3402 if (Found->isFromASTFile())
3403 return nullptr;
3404
3405 if (auto *TND = dyn_cast<TypedefNameDecl>(Found))
3406 return TND->getAnonDeclWithTypedefName(/*AnyRedecl*/true);
3407
3408 return nullptr;
3409}
3410
3411/// Find the declaration to use to populate the anonymous declaration table
3412/// for the given lexical DeclContext. We only care about finding local
3413/// definitions of the context; we'll merge imported ones as we go.
3414DeclContext *
3415ASTDeclReader::getPrimaryDCForAnonymousDecl(DeclContext *LexicalDC) {
3416 // For classes, we track the definition as we merge.
3417 if (auto *RD = dyn_cast<CXXRecordDecl>(LexicalDC)) {
3418 auto *DD = RD->getCanonicalDecl()->DefinitionData;
3419 return DD ? DD->Definition : nullptr;
3420 }
3421
3422 // For anything else, walk its merged redeclarations looking for a definition.
3423 // Note that we can't just call getDefinition here because the redeclaration
3424 // chain isn't wired up.
3425 for (auto *D : merged_redecls(cast<Decl>(LexicalDC))) {
3426 if (auto *FD = dyn_cast<FunctionDecl>(D))
3427 if (FD->isThisDeclarationADefinition())
3428 return FD;
3429 if (auto *MD = dyn_cast<ObjCMethodDecl>(D))
3430 if (MD->isThisDeclarationADefinition())
3431 return MD;
3432 if (auto *RD = dyn_cast<RecordDecl>(D))
3433 if (RD->isThisDeclarationADefinition())
3434 return RD;
3435 }
3436
3437 // No merged definition yet.
3438 return nullptr;
3439}
3440
3441NamedDecl *ASTDeclReader::getAnonymousDeclForMerging(ASTReader &Reader,
3442 DeclContext *DC,
3443 unsigned Index) {
3444 // If the lexical context has been merged, look into the now-canonical
3445 // definition.
3446 auto *CanonDC = cast<Decl>(DC)->getCanonicalDecl();
3447
3448 // If we've seen this before, return the canonical declaration.
3449 auto &Previous = Reader.AnonymousDeclarationsForMerging[CanonDC];
3450 if (Index < Previous.size() && Previous[Index])
3451 return Previous[Index];
3452
3453 // If this is the first time, but we have parsed a declaration of the context,
3454 // build the anonymous declaration list from the parsed declaration.
3455 auto *PrimaryDC = getPrimaryDCForAnonymousDecl(DC);
3456 if (PrimaryDC && !cast<Decl>(PrimaryDC)->isFromASTFile()) {
3457 numberAnonymousDeclsWithin(PrimaryDC, [&](NamedDecl *ND, unsigned Number) {
3458 if (Previous.size() == Number)
3459 Previous.push_back(cast<NamedDecl>(ND->getCanonicalDecl()));
3460 else
3461 Previous[Number] = cast<NamedDecl>(ND->getCanonicalDecl());
3462 });
3463 }
3464
3465 return Index < Previous.size() ? Previous[Index] : nullptr;
3466}
3467
3468void ASTDeclReader::setAnonymousDeclForMerging(ASTReader &Reader,
3469 DeclContext *DC, unsigned Index,
3470 NamedDecl *D) {
3471 auto *CanonDC = cast<Decl>(DC)->getCanonicalDecl();
3472
3473 auto &Previous = Reader.AnonymousDeclarationsForMerging[CanonDC];
3474 if (Index >= Previous.size())
3475 Previous.resize(Index + 1);
3476 if (!Previous[Index])
3477 Previous[Index] = D;
3478}
3479
3480ASTDeclReader::FindExistingResult ASTDeclReader::findExisting(NamedDecl *D) {
3481 DeclarationName Name = TypedefNameForLinkage ? TypedefNameForLinkage
3482 : D->getDeclName();
3483
3484 if (!Name && !needsAnonymousDeclarationNumber(D)) {
3485 // Don't bother trying to find unnamed declarations that are in
3486 // unmergeable contexts.
3487 FindExistingResult Result(Reader, D, /*Existing=*/nullptr,
3488 AnonymousDeclNumber, TypedefNameForLinkage);
3489 Result.suppress();
3490 return Result;
3491 }
3492
3493 DeclContext *DC = D->getDeclContext()->getRedeclContext();
3494 if (TypedefNameForLinkage) {
3495 auto It = Reader.ImportedTypedefNamesForLinkage.find(
3496 std::make_pair(DC, TypedefNameForLinkage));
3497 if (It != Reader.ImportedTypedefNamesForLinkage.end())
3498 if (isSameEntity(It->second, D))
3499 return FindExistingResult(Reader, D, It->second, AnonymousDeclNumber,
3500 TypedefNameForLinkage);
3501 // Go on to check in other places in case an existing typedef name
3502 // was not imported.
3503 }
3504
3505 if (needsAnonymousDeclarationNumber(D)) {
3506 // This is an anonymous declaration that we may need to merge. Look it up
3507 // in its context by number.
3508 if (auto *Existing = getAnonymousDeclForMerging(
3509 Reader, D->getLexicalDeclContext(), AnonymousDeclNumber))
3510 if (isSameEntity(Existing, D))
3511 return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,
3512 TypedefNameForLinkage);
3513 } else if (DC->isTranslationUnit() &&
3514 !Reader.getContext().getLangOpts().CPlusPlus) {
3515 IdentifierResolver &IdResolver = Reader.getIdResolver();
3516
3517 // Temporarily consider the identifier to be up-to-date. We don't want to
3518 // cause additional lookups here.
3519 class UpToDateIdentifierRAII {
3520 IdentifierInfo *II;
3521 bool WasOutToDate = false;
3522
3523 public:
3524 explicit UpToDateIdentifierRAII(IdentifierInfo *II) : II(II) {
3525 if (II) {
3526 WasOutToDate = II->isOutOfDate();
3527 if (WasOutToDate)
3528 II->setOutOfDate(false);
3529 }
3530 }
3531
3532 ~UpToDateIdentifierRAII() {
3533 if (WasOutToDate)
3534 II->setOutOfDate(true);
3535 }
3536 } UpToDate(Name.getAsIdentifierInfo());
3537
3538 for (IdentifierResolver::iterator I = IdResolver.begin(Name),
3539 IEnd = IdResolver.end();
3540 I != IEnd; ++I) {
3541 if (NamedDecl *Existing = getDeclForMerging(*I, TypedefNameForLinkage))
3542 if (isSameEntity(Existing, D))
3543 return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,
3544 TypedefNameForLinkage);
3545 }
3546 } else if (DeclContext *MergeDC = getPrimaryContextForMerging(Reader, DC)) {
3547 DeclContext::lookup_result R = MergeDC->noload_lookup(Name);
3548 for (DeclContext::lookup_iterator I = R.begin(), E = R.end(); I != E; ++I) {
3549 if (NamedDecl *Existing = getDeclForMerging(*I, TypedefNameForLinkage))
3550 if (isSameEntity(Existing, D))
3551 return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,
3552 TypedefNameForLinkage);
3553 }
3554 } else {
3555 // Not in a mergeable context.
3556 return FindExistingResult(Reader);
3557 }
3558
3559 // If this declaration is from a merged context, make a note that we need to
3560 // check that the canonical definition of that context contains the decl.
3561 //
3562 // FIXME: We should do something similar if we merge two definitions of the
3563 // same template specialization into the same CXXRecordDecl.
3564 auto MergedDCIt = Reader.MergedDeclContexts.find(D->getLexicalDeclContext());
3565 if (MergedDCIt != Reader.MergedDeclContexts.end() &&
3566 MergedDCIt->second == D->getDeclContext())
3567 Reader.PendingOdrMergeChecks.push_back(D);
3568
3569 return FindExistingResult(Reader, D, /*Existing=*/nullptr,
3570 AnonymousDeclNumber, TypedefNameForLinkage);
3571}
3572
3573template<typename DeclT>
3574Decl *ASTDeclReader::getMostRecentDeclImpl(Redeclarable<DeclT> *D) {
3575 return D->RedeclLink.getLatestNotUpdated();
3576}
3577
3578Decl *ASTDeclReader::getMostRecentDeclImpl(...) {
3579 llvm_unreachable("getMostRecentDecl on non-redeclarable declaration")::llvm::llvm_unreachable_internal("getMostRecentDecl on non-redeclarable declaration"
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3579)
;
3580}
3581
3582Decl *ASTDeclReader::getMostRecentDecl(Decl *D) {
3583 assert(D)(static_cast <bool> (D) ? void (0) : __assert_fail ("D"
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3583, __extension__ __PRETTY_FUNCTION__))
;
3584
3585 switch (D->getKind()) {
3586#define ABSTRACT_DECL(TYPE)
3587#define DECL(TYPE, BASE) \
3588 case Decl::TYPE: \
3589 return getMostRecentDeclImpl(cast<TYPE##Decl>(D));
3590#include "clang/AST/DeclNodes.inc"
3591 }
3592 llvm_unreachable("unknown decl kind")::llvm::llvm_unreachable_internal("unknown decl kind", "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3592)
;
3593}
3594
3595Decl *ASTReader::getMostRecentExistingDecl(Decl *D) {
3596 return ASTDeclReader::getMostRecentDecl(D->getCanonicalDecl());
3597}
3598
3599void ASTDeclReader::mergeInheritableAttributes(ASTReader &Reader, Decl *D,
3600 Decl *Previous) {
3601 InheritableAttr *NewAttr = nullptr;
3602 ASTContext &Context = Reader.getContext();
3603 const auto *IA = Previous->getAttr<MSInheritanceAttr>();
3604
3605 if (IA && !D->hasAttr<MSInheritanceAttr>()) {
3606 NewAttr = cast<InheritableAttr>(IA->clone(Context));
3607 NewAttr->setInherited(true);
3608 D->addAttr(NewAttr);
3609 }
3610}
3611
3612template<typename DeclT>
3613void ASTDeclReader::attachPreviousDeclImpl(ASTReader &Reader,
3614 Redeclarable<DeclT> *D,
3615 Decl *Previous, Decl *Canon) {
3616 D->RedeclLink.setPrevious(cast<DeclT>(Previous));
3617 D->First = cast<DeclT>(Previous)->First;
3618}
3619
3620namespace clang {
3621
3622template<>
3623void ASTDeclReader::attachPreviousDeclImpl(ASTReader &Reader,
3624 Redeclarable<VarDecl> *D,
3625 Decl *Previous, Decl *Canon) {
3626 auto *VD = static_cast<VarDecl *>(D);
3627 auto *PrevVD = cast<VarDecl>(Previous);
3628 D->RedeclLink.setPrevious(PrevVD);
3629 D->First = PrevVD->First;
3630
3631 // We should keep at most one definition on the chain.
3632 // FIXME: Cache the definition once we've found it. Building a chain with
3633 // N definitions currently takes O(N^2) time here.
3634 if (VD->isThisDeclarationADefinition() == VarDecl::Definition) {
3635 for (VarDecl *CurD = PrevVD; CurD; CurD = CurD->getPreviousDecl()) {
3636 if (CurD->isThisDeclarationADefinition() == VarDecl::Definition) {
3637 Reader.mergeDefinitionVisibility(CurD, VD);
3638 VD->demoteThisDefinitionToDeclaration();
3639 break;
3640 }
3641 }
3642 }
3643}
3644
3645static bool isUndeducedReturnType(QualType T) {
3646 auto *DT = T->getContainedDeducedType();
3647 return DT && !DT->isDeduced();
3648}
3649
3650template<>
3651void ASTDeclReader::attachPreviousDeclImpl(ASTReader &Reader,
3652 Redeclarable<FunctionDecl> *D,
3653 Decl *Previous, Decl *Canon) {
3654 auto *FD = static_cast<FunctionDecl *>(D);
3655 auto *PrevFD = cast<FunctionDecl>(Previous);
3656
3657 FD->RedeclLink.setPrevious(PrevFD);
3658 FD->First = PrevFD->First;
3659
3660 // If the previous declaration is an inline function declaration, then this
3661 // declaration is too.
3662 if (PrevFD->isInlined() != FD->isInlined()) {
3663 // FIXME: [dcl.fct.spec]p4:
3664 // If a function with external linkage is declared inline in one
3665 // translation unit, it shall be declared inline in all translation
3666 // units in which it appears.
3667 //
3668 // Be careful of this case:
3669 //
3670 // module A:
3671 // template<typename T> struct X { void f(); };
3672 // template<typename T> inline void X<T>::f() {}
3673 //
3674 // module B instantiates the declaration of X<int>::f
3675 // module C instantiates the definition of X<int>::f
3676 //
3677 // If module B and C are merged, we do not have a violation of this rule.
3678 FD->setImplicitlyInline(true);
3679 }
3680
3681 auto *FPT = FD->getType()->getAs<FunctionProtoType>();
3682 auto *PrevFPT = PrevFD->getType()->getAs<FunctionProtoType>();
3683 if (FPT && PrevFPT) {
3684 // If we need to propagate an exception specification along the redecl
3685 // chain, make a note of that so that we can do so later.
3686 bool IsUnresolved = isUnresolvedExceptionSpec(FPT->getExceptionSpecType());
3687 bool WasUnresolved =
3688 isUnresolvedExceptionSpec(PrevFPT->getExceptionSpecType());
3689 if (IsUnresolved != WasUnresolved)
3690 Reader.PendingExceptionSpecUpdates.insert(
3691 {Canon, IsUnresolved ? PrevFD : FD});
3692
3693 // If we need to propagate a deduced return type along the redecl chain,
3694 // make a note of that so that we can do it later.
3695 bool IsUndeduced = isUndeducedReturnType(FPT->getReturnType());
3696 bool WasUndeduced = isUndeducedReturnType(PrevFPT->getReturnType());
3697 if (IsUndeduced != WasUndeduced)
3698 Reader.PendingDeducedTypeUpdates.insert(
3699 {cast<FunctionDecl>(Canon),
3700 (IsUndeduced ? PrevFPT : FPT)->getReturnType()});
3701 }
3702}
3703
3704} // namespace clang
3705
3706void ASTDeclReader::attachPreviousDeclImpl(ASTReader &Reader, ...) {
3707 llvm_unreachable("attachPreviousDecl on non-redeclarable declaration")::llvm::llvm_unreachable_internal("attachPreviousDecl on non-redeclarable declaration"
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3707)
;
3708}
3709
3710/// Inherit the default template argument from \p From to \p To. Returns
3711/// \c false if there is no default template for \p From.
3712template <typename ParmDecl>
3713static bool inheritDefaultTemplateArgument(ASTContext &Context, ParmDecl *From,
3714 Decl *ToD) {
3715 auto *To = cast<ParmDecl>(ToD);
3716 if (!From->hasDefaultArgument())
3717 return false;
3718 To->setInheritedDefaultArgument(Context, From);
3719 return true;
3720}
3721
3722static void inheritDefaultTemplateArguments(ASTContext &Context,
3723 TemplateDecl *From,
3724 TemplateDecl *To) {
3725 auto *FromTP = From->getTemplateParameters();
3726 auto *ToTP = To->getTemplateParameters();
3727 assert(FromTP->size() == ToTP->size() && "merged mismatched templates?")(static_cast <bool> (FromTP->size() == ToTP->size
() && "merged mismatched templates?") ? void (0) : __assert_fail
("FromTP->size() == ToTP->size() && \"merged mismatched templates?\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3727, __extension__ __PRETTY_FUNCTION__))
;
3728
3729 for (unsigned I = 0, N = FromTP->size(); I != N; ++I) {
3730 NamedDecl *FromParam = FromTP->getParam(I);
3731 NamedDecl *ToParam = ToTP->getParam(I);
3732
3733 if (auto *FTTP = dyn_cast<TemplateTypeParmDecl>(FromParam))
3734 inheritDefaultTemplateArgument(Context, FTTP, ToParam);
3735 else if (auto *FNTTP = dyn_cast<NonTypeTemplateParmDecl>(FromParam))
3736 inheritDefaultTemplateArgument(Context, FNTTP, ToParam);
3737 else
3738 inheritDefaultTemplateArgument(
3739 Context, cast<TemplateTemplateParmDecl>(FromParam), ToParam);
3740 }
3741}
3742
3743void ASTDeclReader::attachPreviousDecl(ASTReader &Reader, Decl *D,
3744 Decl *Previous, Decl *Canon) {
3745 assert(D && Previous)(static_cast <bool> (D && Previous) ? void (0) :
__assert_fail ("D && Previous", "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3745, __extension__ __PRETTY_FUNCTION__))
;
3746
3747 switch (D->getKind()) {
3748#define ABSTRACT_DECL(TYPE)
3749#define DECL(TYPE, BASE) \
3750 case Decl::TYPE: \
3751 attachPreviousDeclImpl(Reader, cast<TYPE##Decl>(D), Previous, Canon); \
3752 break;
3753#include "clang/AST/DeclNodes.inc"
3754 }
3755
3756 // If the declaration was visible in one module, a redeclaration of it in
3757 // another module remains visible even if it wouldn't be visible by itself.
3758 //
3759 // FIXME: In this case, the declaration should only be visible if a module
3760 // that makes it visible has been imported.
3761 D->IdentifierNamespace |=
3762 Previous->IdentifierNamespace &
3763 (Decl::IDNS_Ordinary | Decl::IDNS_Tag | Decl::IDNS_Type);
3764
3765 // If the declaration declares a template, it may inherit default arguments
3766 // from the previous declaration.
3767 if (auto *TD = dyn_cast<TemplateDecl>(D))
3768 inheritDefaultTemplateArguments(Reader.getContext(),
3769 cast<TemplateDecl>(Previous), TD);
3770
3771 // If any of the declaration in the chain contains an Inheritable attribute,
3772 // it needs to be added to all the declarations in the redeclarable chain.
3773 // FIXME: Only the logic of merging MSInheritableAttr is present, it should
3774 // be extended for all inheritable attributes.
3775 mergeInheritableAttributes(Reader, D, Previous);
3776}
3777
3778template<typename DeclT>
3779void ASTDeclReader::attachLatestDeclImpl(Redeclarable<DeclT> *D, Decl *Latest) {
3780 D->RedeclLink.setLatest(cast<DeclT>(Latest));
3781}
3782
3783void ASTDeclReader::attachLatestDeclImpl(...) {
3784 llvm_unreachable("attachLatestDecl on non-redeclarable declaration")::llvm::llvm_unreachable_internal("attachLatestDecl on non-redeclarable declaration"
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3784)
;
3785}
3786
3787void ASTDeclReader::attachLatestDecl(Decl *D, Decl *Latest) {
3788 assert(D && Latest)(static_cast <bool> (D && Latest) ? void (0) : __assert_fail
("D && Latest", "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3788, __extension__ __PRETTY_FUNCTION__))
;
3789
3790 switch (D->getKind()) {
3791#define ABSTRACT_DECL(TYPE)
3792#define DECL(TYPE, BASE) \
3793 case Decl::TYPE: \
3794 attachLatestDeclImpl(cast<TYPE##Decl>(D), Latest); \
3795 break;
3796#include "clang/AST/DeclNodes.inc"
3797 }
3798}
3799
3800template<typename DeclT>
3801void ASTDeclReader::markIncompleteDeclChainImpl(Redeclarable<DeclT> *D) {
3802 D->RedeclLink.markIncomplete();
3803}
3804
3805void ASTDeclReader::markIncompleteDeclChainImpl(...) {
3806 llvm_unreachable("markIncompleteDeclChain on non-redeclarable declaration")::llvm::llvm_unreachable_internal("markIncompleteDeclChain on non-redeclarable declaration"
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3806)
;
3807}
3808
3809void ASTReader::markIncompleteDeclChain(Decl *D) {
3810 switch (D->getKind()) {
3811#define ABSTRACT_DECL(TYPE)
3812#define DECL(TYPE, BASE) \
3813 case Decl::TYPE: \
3814 ASTDeclReader::markIncompleteDeclChainImpl(cast<TYPE##Decl>(D)); \
3815 break;
3816#include "clang/AST/DeclNodes.inc"
3817 }
3818}
3819
3820/// Read the declaration at the given offset from the AST file.
3821Decl *ASTReader::ReadDeclRecord(DeclID ID) {
3822 unsigned Index = ID - NUM_PREDEF_DECL_IDS;
3823 SourceLocation DeclLoc;
3824 RecordLocation Loc = DeclCursorForID(ID, DeclLoc);
3825 llvm::BitstreamCursor &DeclsCursor = Loc.F->DeclsCursor;
3826 // Keep track of where we are in the stream, then jump back there
3827 // after reading this declaration.
3828 SavedStreamPosition SavedPosition(DeclsCursor);
3829
3830 ReadingKindTracker ReadingKind(Read_Decl, *this);
3831
3832 // Note that we are loading a declaration record.
3833 Deserializing ADecl(this);
3834
3835 auto Fail = [](const char *what, llvm::Error &&Err) {
3836 llvm::report_fatal_error(Twine("ASTReader::readDeclRecord failed ") + what +
3837 ": " + toString(std::move(Err)));
3838 };
3839
3840 if (llvm::Error JumpFailed = DeclsCursor.JumpToBit(Loc.Offset))
3841 Fail("jumping", std::move(JumpFailed));
3842 ASTRecordReader Record(*this, *Loc.F);
3843 ASTDeclReader Reader(*this, Record, Loc, ID, DeclLoc);
3844 Expected<unsigned> MaybeCode = DeclsCursor.ReadCode();
3845 if (!MaybeCode)
3846 Fail("reading code", MaybeCode.takeError());
3847 unsigned Code = MaybeCode.get();
3848
3849 ASTContext &Context = getContext();
3850 Decl *D = nullptr;
3851 Expected<unsigned> MaybeDeclCode = Record.readRecord(DeclsCursor, Code);
3852 if (!MaybeDeclCode)
3853 llvm::report_fatal_error(
3854 "ASTReader::readDeclRecord failed reading decl code: " +
3855 toString(MaybeDeclCode.takeError()));
3856 switch ((DeclCode)MaybeDeclCode.get()) {
3857 case DECL_CONTEXT_LEXICAL:
3858 case DECL_CONTEXT_VISIBLE:
3859 llvm_unreachable("Record cannot be de-serialized with readDeclRecord")::llvm::llvm_unreachable_internal("Record cannot be de-serialized with readDeclRecord"
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3859)
;
3860 case DECL_TYPEDEF:
3861 D = TypedefDecl::CreateDeserialized(Context, ID);
3862 break;
3863 case DECL_TYPEALIAS:
3864 D = TypeAliasDecl::CreateDeserialized(Context, ID);
3865 break;
3866 case DECL_ENUM:
3867 D = EnumDecl::CreateDeserialized(Context, ID);
3868 break;
3869 case DECL_RECORD:
3870 D = RecordDecl::CreateDeserialized(Context, ID);
3871 break;
3872 case DECL_ENUM_CONSTANT:
3873 D = EnumConstantDecl::CreateDeserialized(Context, ID);
3874 break;
3875 case DECL_FUNCTION:
3876 D = FunctionDecl::CreateDeserialized(Context, ID);
3877 break;
3878 case DECL_LINKAGE_SPEC:
3879 D = LinkageSpecDecl::CreateDeserialized(Context, ID);
3880 break;
3881 case DECL_EXPORT:
3882 D = ExportDecl::CreateDeserialized(Context, ID);
3883 break;
3884 case DECL_LABEL:
3885 D = LabelDecl::CreateDeserialized(Context, ID);
3886 break;
3887 case DECL_NAMESPACE:
3888 D = NamespaceDecl::CreateDeserialized(Context, ID);
3889 break;
3890 case DECL_NAMESPACE_ALIAS:
3891 D = NamespaceAliasDecl::CreateDeserialized(Context, ID);
3892 break;
3893 case DECL_USING:
3894 D = UsingDecl::CreateDeserialized(Context, ID);
3895 break;
3896 case DECL_USING_PACK:
3897 D = UsingPackDecl::CreateDeserialized(Context, ID, Record.readInt());
3898 break;
3899 case DECL_USING_SHADOW:
3900 D = UsingShadowDecl::CreateDeserialized(Context, ID);
3901 break;
3902 case DECL_USING_ENUM:
3903 D = UsingEnumDecl::CreateDeserialized(Context, ID);
3904 break;
3905 case DECL_CONSTRUCTOR_USING_SHADOW:
3906 D = ConstructorUsingShadowDecl::CreateDeserialized(Context, ID);
3907 break;
3908 case DECL_USING_DIRECTIVE:
3909 D = UsingDirectiveDecl::CreateDeserialized(Context, ID);
3910 break;
3911 case DECL_UNRESOLVED_USING_VALUE:
3912 D = UnresolvedUsingValueDecl::CreateDeserialized(Context, ID);
3913 break;
3914 case DECL_UNRESOLVED_USING_TYPENAME:
3915 D = UnresolvedUsingTypenameDecl::CreateDeserialized(Context, ID);
3916 break;
3917 case DECL_UNRESOLVED_USING_IF_EXISTS:
3918 D = UnresolvedUsingIfExistsDecl::CreateDeserialized(Context, ID);
3919 break;
3920 case DECL_CXX_RECORD:
3921 D = CXXRecordDecl::CreateDeserialized(Context, ID);
3922 break;
3923 case DECL_CXX_DEDUCTION_GUIDE:
3924 D = CXXDeductionGuideDecl::CreateDeserialized(Context, ID);
3925 break;
3926 case DECL_CXX_METHOD:
3927 D = CXXMethodDecl::CreateDeserialized(Context, ID);
3928 break;
3929 case DECL_CXX_CONSTRUCTOR:
3930 D = CXXConstructorDecl::CreateDeserialized(Context, ID, Record.readInt());
3931 break;
3932 case DECL_CXX_DESTRUCTOR:
3933 D = CXXDestructorDecl::CreateDeserialized(Context, ID);
3934 break;
3935 case DECL_CXX_CONVERSION:
3936 D = CXXConversionDecl::CreateDeserialized(Context, ID);
3937 break;
3938 case DECL_ACCESS_SPEC:
3939 D = AccessSpecDecl::CreateDeserialized(Context, ID);
3940 break;
3941 case DECL_FRIEND:
3942 D = FriendDecl::CreateDeserialized(Context, ID, Record.readInt());
3943 break;
3944 case DECL_FRIEND_TEMPLATE:
3945 D = FriendTemplateDecl::CreateDeserialized(Context, ID);
3946 break;
3947 case DECL_CLASS_TEMPLATE:
3948 D = ClassTemplateDecl::CreateDeserialized(Context, ID);
3949 break;
3950 case DECL_CLASS_TEMPLATE_SPECIALIZATION:
3951 D = ClassTemplateSpecializationDecl::CreateDeserialized(Context, ID);
3952 break;
3953 case DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION:
3954 D = ClassTemplatePartialSpecializationDecl::CreateDeserialized(Context, ID);
3955 break;
3956 case DECL_VAR_TEMPLATE:
3957 D = VarTemplateDecl::CreateDeserialized(Context, ID);
3958 break;
3959 case DECL_VAR_TEMPLATE_SPECIALIZATION:
3960 D = VarTemplateSpecializationDecl::CreateDeserialized(Context, ID);
3961 break;
3962 case DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION:
3963 D = VarTemplatePartialSpecializationDecl::CreateDeserialized(Context, ID);
3964 break;
3965 case DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION:
3966 D = ClassScopeFunctionSpecializationDecl::CreateDeserialized(Context, ID);
3967 break;
3968 case DECL_FUNCTION_TEMPLATE:
3969 D = FunctionTemplateDecl::CreateDeserialized(Context, ID);
3970 break;
3971 case DECL_TEMPLATE_TYPE_PARM: {
3972 bool HasTypeConstraint = Record.readInt();
3973 D = TemplateTypeParmDecl::CreateDeserialized(Context, ID,
3974 HasTypeConstraint);
3975 break;
3976 }
3977 case DECL_NON_TYPE_TEMPLATE_PARM: {
3978 bool HasTypeConstraint = Record.readInt();
3979 D = NonTypeTemplateParmDecl::CreateDeserialized(Context, ID,
3980 HasTypeConstraint);
3981 break;
3982 }
3983 case DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK: {
3984 bool HasTypeConstraint = Record.readInt();
3985 D = NonTypeTemplateParmDecl::CreateDeserialized(Context, ID,
3986 Record.readInt(),
3987 HasTypeConstraint);
3988 break;
3989 }
3990 case DECL_TEMPLATE_TEMPLATE_PARM:
3991 D = TemplateTemplateParmDecl::CreateDeserialized(Context, ID);
3992 break;
3993 case DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK:
3994 D = TemplateTemplateParmDecl::CreateDeserialized(Context, ID,
3995 Record.readInt());
3996 break;
3997 case DECL_TYPE_ALIAS_TEMPLATE:
3998 D = TypeAliasTemplateDecl::CreateDeserialized(Context, ID);
3999 break;
4000 case DECL_CONCEPT:
4001 D = ConceptDecl::CreateDeserialized(Context, ID);
4002 break;
4003 case DECL_REQUIRES_EXPR_BODY:
4004 D = RequiresExprBodyDecl::CreateDeserialized(Context, ID);
4005 break;
4006 case DECL_STATIC_ASSERT:
4007 D = StaticAssertDecl::CreateDeserialized(Context, ID);
4008 break;
4009 case DECL_OBJC_METHOD:
4010 D = ObjCMethodDecl::CreateDeserialized(Context, ID);
4011 break;
4012 case DECL_OBJC_INTERFACE:
4013 D = ObjCInterfaceDecl::CreateDeserialized(Context, ID);
4014 break;
4015 case DECL_OBJC_IVAR:
4016 D = ObjCIvarDecl::CreateDeserialized(Context, ID);
4017 break;
4018 case DECL_OBJC_PROTOCOL:
4019 D = ObjCProtocolDecl::CreateDeserialized(Context, ID);
4020 break;
4021 case DECL_OBJC_AT_DEFS_FIELD:
4022 D = ObjCAtDefsFieldDecl::CreateDeserialized(Context, ID);
4023 break;
4024 case DECL_OBJC_CATEGORY:
4025 D = ObjCCategoryDecl::CreateDeserialized(Context, ID);
4026 break;
4027 case DECL_OBJC_CATEGORY_IMPL:
4028 D = ObjCCategoryImplDecl::CreateDeserialized(Context, ID);
4029 break;
4030 case DECL_OBJC_IMPLEMENTATION:
4031 D = ObjCImplementationDecl::CreateDeserialized(Context, ID);
4032 break;
4033 case DECL_OBJC_COMPATIBLE_ALIAS:
4034 D = ObjCCompatibleAliasDecl::CreateDeserialized(Context, ID);
4035 break;
4036 case DECL_OBJC_PROPERTY:
4037 D = ObjCPropertyDecl::CreateDeserialized(Context, ID);
4038 break;
4039 case DECL_OBJC_PROPERTY_IMPL:
4040 D = ObjCPropertyImplDecl::CreateDeserialized(Context, ID);
4041 break;
4042 case DECL_FIELD:
4043 D = FieldDecl::CreateDeserialized(Context, ID);
4044 break;
4045 case DECL_INDIRECTFIELD:
4046 D = IndirectFieldDecl::CreateDeserialized(Context, ID);
4047 break;
4048 case DECL_VAR:
4049 D = VarDecl::CreateDeserialized(Context, ID);
4050 break;
4051 case DECL_IMPLICIT_PARAM:
4052 D = ImplicitParamDecl::CreateDeserialized(Context, ID);
4053 break;
4054 case DECL_PARM_VAR:
4055 D = ParmVarDecl::CreateDeserialized(Context, ID);
4056 break;
4057 case DECL_DECOMPOSITION:
4058 D = DecompositionDecl::CreateDeserialized(Context, ID, Record.readInt());
4059 break;
4060 case DECL_BINDING:
4061 D = BindingDecl::CreateDeserialized(Context, ID);
4062 break;
4063 case DECL_FILE_SCOPE_ASM:
4064 D = FileScopeAsmDecl::CreateDeserialized(Context, ID);
4065 break;
4066 case DECL_BLOCK:
4067 D = BlockDecl::CreateDeserialized(Context, ID);
4068 break;
4069 case DECL_MS_PROPERTY:
4070 D = MSPropertyDecl::CreateDeserialized(Context, ID);
4071 break;
4072 case DECL_MS_GUID:
4073 D = MSGuidDecl::CreateDeserialized(Context, ID);
4074 break;
4075 case DECL_TEMPLATE_PARAM_OBJECT:
4076 D = TemplateParamObjectDecl::CreateDeserialized(Context, ID);
4077 break;
4078 case DECL_CAPTURED:
4079 D = CapturedDecl::CreateDeserialized(Context, ID, Record.readInt());
4080 break;
4081 case DECL_CXX_BASE_SPECIFIERS:
4082 Error("attempt to read a C++ base-specifier record as a declaration");
4083 return nullptr;
4084 case DECL_CXX_CTOR_INITIALIZERS:
4085 Error("attempt to read a C++ ctor initializer record as a declaration");
4086 return nullptr;
4087 case DECL_IMPORT:
4088 // Note: last entry of the ImportDecl record is the number of stored source
4089 // locations.
4090 D = ImportDecl::CreateDeserialized(Context, ID, Record.back());
4091 break;
4092 case DECL_OMP_THREADPRIVATE: {
4093 Record.skipInts(1);
4094 unsigned NumChildren = Record.readInt();
4095 Record.skipInts(1);
4096 D = OMPThreadPrivateDecl::CreateDeserialized(Context, ID, NumChildren);
4097 break;
4098 }
4099 case DECL_OMP_ALLOCATE: {
4100 unsigned NumClauses = Record.readInt();
4101 unsigned NumVars = Record.readInt();
4102 Record.skipInts(1);
4103 D = OMPAllocateDecl::CreateDeserialized(Context, ID, NumVars, NumClauses);
4104 break;
4105 }
4106 case DECL_OMP_REQUIRES: {
4107 unsigned NumClauses = Record.readInt();
4108 Record.skipInts(2);
4109 D = OMPRequiresDecl::CreateDeserialized(Context, ID, NumClauses);
4110 break;
4111 }
4112 case DECL_OMP_DECLARE_REDUCTION:
4113 D = OMPDeclareReductionDecl::CreateDeserialized(Context, ID);
4114 break;
4115 case DECL_OMP_DECLARE_MAPPER: {
4116 unsigned NumClauses = Record.readInt();
4117 Record.skipInts(2);
4118 D = OMPDeclareMapperDecl::CreateDeserialized(Context, ID, NumClauses);
4119 break;
4120 }
4121 case DECL_OMP_CAPTUREDEXPR:
4122 D = OMPCapturedExprDecl::CreateDeserialized(Context, ID);
4123 break;
4124 case DECL_PRAGMA_COMMENT:
4125 D = PragmaCommentDecl::CreateDeserialized(Context, ID, Record.readInt());
4126 break;
4127 case DECL_PRAGMA_DETECT_MISMATCH:
4128 D = PragmaDetectMismatchDecl::CreateDeserialized(Context, ID,
4129 Record.readInt());
4130 break;
4131 case DECL_EMPTY:
4132 D = EmptyDecl::CreateDeserialized(Context, ID);
4133 break;
4134 case DECL_LIFETIME_EXTENDED_TEMPORARY:
4135 D = LifetimeExtendedTemporaryDecl::CreateDeserialized(Context, ID);
4136 break;
4137 case DECL_OBJC_TYPE_PARAM:
4138 D = ObjCTypeParamDecl::CreateDeserialized(Context, ID);
4139 break;
4140 }
4141
4142 assert(D && "Unknown declaration reading AST file")(static_cast <bool> (D && "Unknown declaration reading AST file"
) ? void (0) : __assert_fail ("D && \"Unknown declaration reading AST file\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4142, __extension__ __PRETTY_FUNCTION__))
;
4143 LoadedDecl(Index, D);
4144 // Set the DeclContext before doing any deserialization, to make sure internal
4145 // calls to Decl::getASTContext() by Decl's methods will find the
4146 // TranslationUnitDecl without crashing.
4147 D->setDeclContext(Context.getTranslationUnitDecl());
4148 Reader.Visit(D);
4149
4150 // If this declaration is also a declaration context, get the
4151 // offsets for its tables of lexical and visible declarations.
4152 if (auto *DC = dyn_cast<DeclContext>(D)) {
4153 std::pair<uint64_t, uint64_t> Offsets = Reader.VisitDeclContext(DC);
4154 if (Offsets.first &&
4155 ReadLexicalDeclContextStorage(*Loc.F, DeclsCursor, Offsets.first, DC))
4156 return nullptr;
4157 if (Offsets.second &&
4158 ReadVisibleDeclContextStorage(*Loc.F, DeclsCursor, Offsets.second, ID))
4159 return nullptr;
4160 }
4161 assert(Record.getIdx() == Record.size())(static_cast <bool> (Record.getIdx() == Record.size()) ?
void (0) : __assert_fail ("Record.getIdx() == Record.size()"
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4161, __extension__ __PRETTY_FUNCTION__))
;
4162
4163 // Load any relevant update records.
4164 PendingUpdateRecords.push_back(
4165 PendingUpdateRecord(ID, D, /*JustLoaded=*/true));
4166
4167 // Load the categories after recursive loading is finished.
4168 if (auto *Class = dyn_cast<ObjCInterfaceDecl>(D))
4169 // If we already have a definition when deserializing the ObjCInterfaceDecl,
4170 // we put the Decl in PendingDefinitions so we can pull the categories here.
4171 if (Class->isThisDeclarationADefinition() ||
4172 PendingDefinitions.count(Class))
4173 loadObjCCategories(ID, Class);
4174
4175 // If we have deserialized a declaration that has a definition the
4176 // AST consumer might need to know about, queue it.
4177 // We don't pass it to the consumer immediately because we may be in recursive
4178 // loading, and some declarations may still be initializing.
4179 PotentiallyInterestingDecls.push_back(
4180 InterestingDecl(D, Reader.hasPendingBody()));
4181
4182 return D;
4183}
4184
4185void ASTReader::PassInterestingDeclsToConsumer() {
4186 assert(Consumer)(static_cast <bool> (Consumer) ? void (0) : __assert_fail
("Consumer", "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4186, __extension__ __PRETTY_FUNCTION__))
;
4187
4188 if (PassingDeclsToConsumer)
4189 return;
4190
4191 // Guard variable to avoid recursively redoing the process of passing
4192 // decls to consumer.
4193 SaveAndRestore<bool> GuardPassingDeclsToConsumer(PassingDeclsToConsumer,
4194 true);
4195
4196 // Ensure that we've loaded all potentially-interesting declarations
4197 // that need to be eagerly loaded.
4198 for (auto ID : EagerlyDeserializedDecls)
4199 GetDecl(ID);
4200 EagerlyDeserializedDecls.clear();
4201
4202 while (!PotentiallyInterestingDecls.empty()) {
4203 InterestingDecl D = PotentiallyInterestingDecls.front();
4204 PotentiallyInterestingDecls.pop_front();
4205 if (isConsumerInterestedIn(getContext(), D.getDecl(), D.hasPendingBody()))
4206 PassInterestingDeclToConsumer(D.getDecl());
4207 }
4208}
4209
4210void ASTReader::loadDeclUpdateRecords(PendingUpdateRecord &Record) {
4211 // The declaration may have been modified by files later in the chain.
4212 // If this is the case, read the record containing the updates from each file
4213 // and pass it to ASTDeclReader to make the modifications.
4214 serialization::GlobalDeclID ID = Record.ID;
4215 Decl *D = Record.D;
4216 ProcessingUpdatesRAIIObj ProcessingUpdates(*this);
4217 DeclUpdateOffsetsMap::iterator UpdI = DeclUpdateOffsets.find(ID);
4218
4219 SmallVector<serialization::DeclID, 8> PendingLazySpecializationIDs;
4220
4221 if (UpdI != DeclUpdateOffsets.end()) {
4222 auto UpdateOffsets = std::move(UpdI->second);
4223 DeclUpdateOffsets.erase(UpdI);
4224
4225 // Check if this decl was interesting to the consumer. If we just loaded
4226 // the declaration, then we know it was interesting and we skip the call
4227 // to isConsumerInterestedIn because it is unsafe to call in the
4228 // current ASTReader state.
4229 bool WasInteresting =
4230 Record.JustLoaded || isConsumerInterestedIn(getContext(), D, false);
4231 for (auto &FileAndOffset : UpdateOffsets) {
4232 ModuleFile *F = FileAndOffset.first;
4233 uint64_t Offset = FileAndOffset.second;
4234 llvm::BitstreamCursor &Cursor = F->DeclsCursor;
4235 SavedStreamPosition SavedPosition(Cursor);
4236 if (llvm::Error JumpFailed = Cursor.JumpToBit(Offset))
4237 // FIXME don't do a fatal error.
4238 llvm::report_fatal_error(
4239 "ASTReader::loadDeclUpdateRecords failed jumping: " +
4240 toString(std::move(JumpFailed)));
4241 Expected<unsigned> MaybeCode = Cursor.ReadCode();
4242 if (!MaybeCode)
4243 llvm::report_fatal_error(
4244 "ASTReader::loadDeclUpdateRecords failed reading code: " +
4245 toString(MaybeCode.takeError()));
4246 unsigned Code = MaybeCode.get();
4247 ASTRecordReader Record(*this, *F);
4248 if (Expected<unsigned> MaybeRecCode = Record.readRecord(Cursor, Code))
4249 assert(MaybeRecCode.get() == DECL_UPDATES &&(static_cast <bool> (MaybeRecCode.get() == DECL_UPDATES
&& "Expected DECL_UPDATES record!") ? void (0) : __assert_fail
("MaybeRecCode.get() == DECL_UPDATES && \"Expected DECL_UPDATES record!\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4250, __extension__ __PRETTY_FUNCTION__))
4250 "Expected DECL_UPDATES record!")(static_cast <bool> (MaybeRecCode.get() == DECL_UPDATES
&& "Expected DECL_UPDATES record!") ? void (0) : __assert_fail
("MaybeRecCode.get() == DECL_UPDATES && \"Expected DECL_UPDATES record!\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4250, __extension__ __PRETTY_FUNCTION__))
;
4251 else
4252 llvm::report_fatal_error(
4253 "ASTReader::loadDeclUpdateRecords failed reading rec code: " +
4254 toString(MaybeCode.takeError()));
4255
4256 ASTDeclReader Reader(*this, Record, RecordLocation(F, Offset), ID,
4257 SourceLocation());
4258 Reader.UpdateDecl(D, PendingLazySpecializationIDs);
4259
4260 // We might have made this declaration interesting. If so, remember that
4261 // we need to hand it off to the consumer.
4262 if (!WasInteresting &&
4263 isConsumerInterestedIn(getContext(), D, Reader.hasPendingBody())) {
4264 PotentiallyInterestingDecls.push_back(
4265 InterestingDecl(D, Reader.hasPendingBody()));
4266 WasInteresting = true;
4267 }
4268 }
4269 }
4270 // Add the lazy specializations to the template.
4271 assert((PendingLazySpecializationIDs.empty() || isa<ClassTemplateDecl>(D) ||(static_cast <bool> ((PendingLazySpecializationIDs.empty
() || isa<ClassTemplateDecl>(D) || isa<FunctionTemplateDecl
>(D) || isa<VarTemplateDecl>(D)) && "Must not have pending specializations"
) ? void (0) : __assert_fail ("(PendingLazySpecializationIDs.empty() || isa<ClassTemplateDecl>(D) || isa<FunctionTemplateDecl>(D) || isa<VarTemplateDecl>(D)) && \"Must not have pending specializations\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4273, __extension__ __PRETTY_FUNCTION__))
4272 isa<FunctionTemplateDecl>(D) || isa<VarTemplateDecl>(D)) &&(static_cast <bool> ((PendingLazySpecializationIDs.empty
() || isa<ClassTemplateDecl>(D) || isa<FunctionTemplateDecl
>(D) || isa<VarTemplateDecl>(D)) && "Must not have pending specializations"
) ? void (0) : __assert_fail ("(PendingLazySpecializationIDs.empty() || isa<ClassTemplateDecl>(D) || isa<FunctionTemplateDecl>(D) || isa<VarTemplateDecl>(D)) && \"Must not have pending specializations\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4273, __extension__ __PRETTY_FUNCTION__))
4273 "Must not have pending specializations")(static_cast <bool> ((PendingLazySpecializationIDs.empty
() || isa<ClassTemplateDecl>(D) || isa<FunctionTemplateDecl
>(D) || isa<VarTemplateDecl>(D)) && "Must not have pending specializations"
) ? void (0) : __assert_fail ("(PendingLazySpecializationIDs.empty() || isa<ClassTemplateDecl>(D) || isa<FunctionTemplateDecl>(D) || isa<VarTemplateDecl>(D)) && \"Must not have pending specializations\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4273, __extension__ __PRETTY_FUNCTION__))
;
4274 if (auto *CTD = dyn_cast<ClassTemplateDecl>(D))
4275 ASTDeclReader::AddLazySpecializations(CTD, PendingLazySpecializationIDs);
4276 else if (auto *FTD = dyn_cast<FunctionTemplateDecl>(D))
4277 ASTDeclReader::AddLazySpecializations(FTD, PendingLazySpecializationIDs);
4278 else if (auto *VTD = dyn_cast<VarTemplateDecl>(D))
4279 ASTDeclReader::AddLazySpecializations(VTD, PendingLazySpecializationIDs);
4280 PendingLazySpecializationIDs.clear();
4281
4282 // Load the pending visible updates for this decl context, if it has any.
4283 auto I = PendingVisibleUpdates.find(ID);
4284 if (I != PendingVisibleUpdates.end()) {
4285 auto VisibleUpdates = std::move(I->second);
4286 PendingVisibleUpdates.erase(I);
4287
4288 auto *DC = cast<DeclContext>(D)->getPrimaryContext();
4289 for (const auto &Update : VisibleUpdates)
4290 Lookups[DC].Table.add(
4291 Update.Mod, Update.Data,
4292 reader::ASTDeclContextNameLookupTrait(*this, *Update.Mod));
4293 DC->setHasExternalVisibleStorage(true);
4294 }
4295}
4296
4297void ASTReader::loadPendingDeclChain(Decl *FirstLocal, uint64_t LocalOffset) {
4298 // Attach FirstLocal to the end of the decl chain.
4299 Decl *CanonDecl = FirstLocal->getCanonicalDecl();
4300 if (FirstLocal != CanonDecl) {
4301 Decl *PrevMostRecent = ASTDeclReader::getMostRecentDecl(CanonDecl);
4302 ASTDeclReader::attachPreviousDecl(
4303 *this, FirstLocal, PrevMostRecent ? PrevMostRecent : CanonDecl,
4304 CanonDecl);
4305 }
4306
4307 if (!LocalOffset) {
4308 ASTDeclReader::attachLatestDecl(CanonDecl, FirstLocal);
4309 return;
4310 }
4311
4312 // Load the list of other redeclarations from this module file.
4313 ModuleFile *M = getOwningModuleFile(FirstLocal);
4314 assert(M && "imported decl from no module file")(static_cast <bool> (M && "imported decl from no module file"
) ? void (0) : __assert_fail ("M && \"imported decl from no module file\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4314, __extension__ __PRETTY_FUNCTION__))
;
4315
4316 llvm::BitstreamCursor &Cursor = M->DeclsCursor;
4317 SavedStreamPosition SavedPosition(Cursor);
4318 if (llvm::Error JumpFailed = Cursor.JumpToBit(LocalOffset))
4319 llvm::report_fatal_error(
4320 "ASTReader::loadPendingDeclChain failed jumping: " +
4321 toString(std::move(JumpFailed)));
4322
4323 RecordData Record;
4324 Expected<unsigned> MaybeCode = Cursor.ReadCode();
4325 if (!MaybeCode)
4326 llvm::report_fatal_error(
4327 "ASTReader::loadPendingDeclChain failed reading code: " +
4328 toString(MaybeCode.takeError()));
4329 unsigned Code = MaybeCode.get();
4330 if (Expected<unsigned> MaybeRecCode = Cursor.readRecord(Code, Record))
4331 assert(MaybeRecCode.get() == LOCAL_REDECLARATIONS &&(static_cast <bool> (MaybeRecCode.get() == LOCAL_REDECLARATIONS
&& "expected LOCAL_REDECLARATIONS record!") ? void (
0) : __assert_fail ("MaybeRecCode.get() == LOCAL_REDECLARATIONS && \"expected LOCAL_REDECLARATIONS record!\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4332, __extension__ __PRETTY_FUNCTION__))
4332 "expected LOCAL_REDECLARATIONS record!")(static_cast <bool> (MaybeRecCode.get() == LOCAL_REDECLARATIONS
&& "expected LOCAL_REDECLARATIONS record!") ? void (
0) : __assert_fail ("MaybeRecCode.get() == LOCAL_REDECLARATIONS && \"expected LOCAL_REDECLARATIONS record!\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4332, __extension__ __PRETTY_FUNCTION__))
;
4333 else
4334 llvm::report_fatal_error(
4335 "ASTReader::loadPendingDeclChain failed reading rec code: " +
4336 toString(MaybeCode.takeError()));
4337
4338 // FIXME: We have several different dispatches on decl kind here; maybe
4339 // we should instead generate one loop per kind and dispatch up-front?
4340 Decl *MostRecent = FirstLocal;
4341 for (unsigned I = 0, N = Record.size(); I != N; ++I) {
4342 auto *D = GetLocalDecl(*M, Record[N - I - 1]);
4343 ASTDeclReader::attachPreviousDecl(*this, D, MostRecent, CanonDecl);
4344 MostRecent = D;
4345 }
4346 ASTDeclReader::attachLatestDecl(CanonDecl, MostRecent);
4347}
4348
4349namespace {
4350
4351 /// Given an ObjC interface, goes through the modules and links to the
4352 /// interface all the categories for it.
4353 class ObjCCategoriesVisitor {
4354 ASTReader &Reader;
4355 ObjCInterfaceDecl *Interface;
4356 llvm::SmallPtrSetImpl<ObjCCategoryDecl *> &Deserialized;
4357 ObjCCategoryDecl *Tail = nullptr;
4358 llvm::DenseMap<DeclarationName, ObjCCategoryDecl *> NameCategoryMap;
4359 serialization::GlobalDeclID InterfaceID;
4360 unsigned PreviousGeneration;
4361
4362 void add(ObjCCategoryDecl *Cat) {
4363 // Only process each category once.
4364 if (!Deserialized.erase(Cat))
4365 return;
4366
4367 // Check for duplicate categories.
4368 if (Cat->getDeclName()) {
4369 ObjCCategoryDecl *&Existing = NameCategoryMap[Cat->getDeclName()];
4370 if (Existing &&
4371 Reader.getOwningModuleFile(Existing)
4372 != Reader.getOwningModuleFile(Cat)) {
4373 // FIXME: We should not warn for duplicates in diamond:
4374 //
4375 // MT //
4376 // / \ //
4377 // ML MR //
4378 // \ / //
4379 // MB //
4380 //
4381 // If there are duplicates in ML/MR, there will be warning when
4382 // creating MB *and* when importing MB. We should not warn when
4383 // importing.
4384 Reader.Diag(Cat->getLocation(), diag::warn_dup_category_def)
4385 << Interface->getDeclName() << Cat->getDeclName();
4386 Reader.Diag(Existing->getLocation(), diag::note_previous_definition);
4387 } else if (!Existing) {
4388 // Record this category.
4389 Existing = Cat;
4390 }
4391 }
4392
4393 // Add this category to the end of the chain.
4394 if (Tail)
4395 ASTDeclReader::setNextObjCCategory(Tail, Cat);
4396 else
4397 Interface->setCategoryListRaw(Cat);
4398 Tail = Cat;
4399 }
4400
4401 public:
4402 ObjCCategoriesVisitor(ASTReader &Reader,
4403 ObjCInterfaceDecl *Interface,
4404 llvm::SmallPtrSetImpl<ObjCCategoryDecl *> &Deserialized,
4405 serialization::GlobalDeclID InterfaceID,
4406 unsigned PreviousGeneration)
4407 : Reader(Reader), Interface(Interface), Deserialized(Deserialized),
4408 InterfaceID(InterfaceID), PreviousGeneration(PreviousGeneration) {
4409 // Populate the name -> category map with the set of known categories.
4410 for (auto *Cat : Interface->known_categories()) {
4411 if (Cat->getDeclName())
4412 NameCategoryMap[Cat->getDeclName()] = Cat;
4413
4414 // Keep track of the tail of the category list.
4415 Tail = Cat;
4416 }
4417 }
4418
4419 bool operator()(ModuleFile &M) {
4420 // If we've loaded all of the category information we care about from
4421 // this module file, we're done.
4422 if (M.Generation <= PreviousGeneration)
4423 return true;
4424
4425 // Map global ID of the definition down to the local ID used in this
4426 // module file. If there is no such mapping, we'll find nothing here
4427 // (or in any module it imports).
4428 DeclID LocalID = Reader.mapGlobalIDToModuleFileGlobalID(M, InterfaceID);
4429 if (!LocalID)
4430 return true;
4431
4432 // Perform a binary search to find the local redeclarations for this
4433 // declaration (if any).
4434 const ObjCCategoriesInfo Compare = { LocalID, 0 };
4435 const ObjCCategoriesInfo *Result
4436 = std::lower_bound(M.ObjCCategoriesMap,
4437 M.ObjCCategoriesMap + M.LocalNumObjCCategoriesInMap,
4438 Compare);
4439 if (Result == M.ObjCCategoriesMap + M.LocalNumObjCCategoriesInMap ||
4440 Result->DefinitionID != LocalID) {
4441 // We didn't find anything. If the class definition is in this module
4442 // file, then the module files it depends on cannot have any categories,
4443 // so suppress further lookup.
4444 return Reader.isDeclIDFromModule(InterfaceID, M);
4445 }
4446
4447 // We found something. Dig out all of the categories.
4448 unsigned Offset = Result->Offset;
4449 unsigned N = M.ObjCCategories[Offset];
4450 M.ObjCCategories[Offset++] = 0; // Don't try to deserialize again
4451 for (unsigned I = 0; I != N; ++I)
4452 add(cast_or_null<ObjCCategoryDecl>(
4453 Reader.GetLocalDecl(M, M.ObjCCategories[Offset++])));
4454 return true;
4455 }
4456 };
4457
4458} // namespace
4459
4460void ASTReader::loadObjCCategories(serialization::GlobalDeclID ID,
4461 ObjCInterfaceDecl *D,
4462 unsigned PreviousGeneration) {
4463 ObjCCategoriesVisitor Visitor(*this, D, CategoriesDeserialized, ID,
4464 PreviousGeneration);
4465 ModuleMgr.visit(Visitor);
4466}
4467
4468template<typename DeclT, typename Fn>
4469static void forAllLaterRedecls(DeclT *D, Fn F) {
4470 F(D);
4471
4472 // Check whether we've already merged D into its redeclaration chain.
4473 // MostRecent may or may not be nullptr if D has not been merged. If
4474 // not, walk the merged redecl chain and see if it's there.
4475 auto *MostRecent = D->getMostRecentDecl();
4476 bool Found = false;
4477 for (auto *Redecl = MostRecent; Redecl && !Found;
4478 Redecl = Redecl->getPreviousDecl())
4479 Found = (Redecl == D);
4480
4481 // If this declaration is merged, apply the functor to all later decls.
4482 if (Found) {
4483 for (auto *Redecl = MostRecent; Redecl != D;
4484 Redecl = Redecl->getPreviousDecl())
4485 F(Redecl);
4486 }
4487}
4488
4489void ASTDeclReader::UpdateDecl(Decl *D,
4490 llvm::SmallVectorImpl<serialization::DeclID> &PendingLazySpecializationIDs) {
4491 while (Record.getIdx() < Record.size()) {
4492 switch ((DeclUpdateKind)Record.readInt()) {
4493 case UPD_CXX_ADDED_IMPLICIT_MEMBER: {
4494 auto *RD = cast<CXXRecordDecl>(D);
4495 // FIXME: If we also have an update record for instantiating the
4496 // definition of D, we need that to happen before we get here.
4497 Decl *MD = Record.readDecl();
4498 assert(MD && "couldn't read decl from update record")(static_cast <bool> (MD && "couldn't read decl from update record"
) ? void (0) : __assert_fail ("MD && \"couldn't read decl from update record\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4498, __extension__ __PRETTY_FUNCTION__))
;
4499 // FIXME: We should call addHiddenDecl instead, to add the member
4500 // to its DeclContext.
4501 RD->addedMember(MD);
4502 break;
4503 }
4504
4505 case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
4506 // It will be added to the template's lazy specialization set.
4507 PendingLazySpecializationIDs.push_back(readDeclID());
4508 break;
4509
4510 case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE: {
4511 auto *Anon = readDeclAs<NamespaceDecl>();
4512
4513 // Each module has its own anonymous namespace, which is disjoint from
4514 // any other module's anonymous namespaces, so don't attach the anonymous
4515 // namespace at all.
4516 if (!Record.isModule()) {
4517 if (auto *TU = dyn_cast<TranslationUnitDecl>(D))
4518 TU->setAnonymousNamespace(Anon);
4519 else
4520 cast<NamespaceDecl>(D)->setAnonymousNamespace(Anon);
4521 }
4522 break;
4523 }
4524
4525 case UPD_CXX_ADDED_VAR_DEFINITION: {
4526 auto *VD = cast<VarDecl>(D);
4527 VD->NonParmVarDeclBits.IsInline = Record.readInt();
4528 VD->NonParmVarDeclBits.IsInlineSpecified = Record.readInt();
4529 uint64_t Val = Record.readInt();
4530 if (Val && !VD->getInit()) {
4531 VD->setInit(Record.readExpr());
4532 if (Val != 1) {
4533 EvaluatedStmt *Eval = VD->ensureEvaluatedStmt();
4534 Eval->HasConstantInitialization = (Val & 2) != 0;
4535 Eval->HasConstantDestruction = (Val & 4) != 0;
4536 }
4537 }
4538 break;
4539 }
4540
4541 case UPD_CXX_POINT_OF_INSTANTIATION: {
4542 SourceLocation POI = Record.readSourceLocation();
4543 if (auto *VTSD = dyn_cast<VarTemplateSpecializationDecl>(D)) {
4544 VTSD->setPointOfInstantiation(POI);
4545 } else if (auto *VD = dyn_cast<VarDecl>(D)) {
4546 VD->getMemberSpecializationInfo()->setPointOfInstantiation(POI);
4547 } else {
4548 auto *FD = cast<FunctionDecl>(D);
4549 if (auto *FTSInfo = FD->TemplateOrSpecialization
4550 .dyn_cast<FunctionTemplateSpecializationInfo *>())
4551 FTSInfo->setPointOfInstantiation(POI);
4552 else
4553 FD->TemplateOrSpecialization.get<MemberSpecializationInfo *>()
4554 ->setPointOfInstantiation(POI);
4555 }
4556 break;
4557 }
4558
4559 case UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT: {
4560 auto *Param = cast<ParmVarDecl>(D);
4561
4562 // We have to read the default argument regardless of whether we use it
4563 // so that hypothetical further update records aren't messed up.
4564 // TODO: Add a function to skip over the next expr record.
4565 auto *DefaultArg = Record.readExpr();
4566
4567 // Only apply the update if the parameter still has an uninstantiated
4568 // default argument.
4569 if (Param->hasUninstantiatedDefaultArg())
4570 Param->setDefaultArg(DefaultArg);
4571 break;
4572 }
4573
4574 case UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER: {
4575 auto *FD = cast<FieldDecl>(D);
4576 auto *DefaultInit = Record.readExpr();
4577
4578 // Only apply the update if the field still has an uninstantiated
4579 // default member initializer.
4580 if (FD->hasInClassInitializer() && !FD->getInClassInitializer()) {
4581 if (DefaultInit)
4582 FD->setInClassInitializer(DefaultInit);
4583 else
4584 // Instantiation failed. We can get here if we serialized an AST for
4585 // an invalid program.
4586 FD->removeInClassInitializer();
4587 }
4588 break;
4589 }
4590
4591 case UPD_CXX_ADDED_FUNCTION_DEFINITION: {
4592 auto *FD = cast<FunctionDecl>(D);
4593 if (Reader.PendingBodies[FD]) {
4594 // FIXME: Maybe check for ODR violations.
4595 // It's safe to stop now because this update record is always last.
4596 return;
4597 }
4598
4599 if (Record.readInt()) {
4600 // Maintain AST consistency: any later redeclarations of this function
4601 // are inline if this one is. (We might have merged another declaration
4602 // into this one.)
4603 forAllLaterRedecls(FD, [](FunctionDecl *FD) {
4604 FD->setImplicitlyInline();
4605 });
4606 }
4607 FD->setInnerLocStart(readSourceLocation());
4608 ReadFunctionDefinition(FD);
4609 assert(Record.getIdx() == Record.size() && "lazy body must be last")(static_cast <bool> (Record.getIdx() == Record.size() &&
"lazy body must be last") ? void (0) : __assert_fail ("Record.getIdx() == Record.size() && \"lazy body must be last\""
, "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4609, __extension__ __PRETTY_FUNCTION__))
;
4610 break;
4611 }
4612
4613 case UPD_CXX_INSTANTIATED_CLASS_DEFINITION: {
4614 auto *RD = cast<CXXRecordDecl>(D);
4615 auto *OldDD = RD->getCanonicalDecl()->DefinitionData;
4616 bool HadRealDefinition =
4617 OldDD && (OldDD->Definition != RD ||
4618 !Reader.PendingFakeDefinitionData.count(OldDD));
4619 RD->setParamDestroyedInCallee(Record.readInt());
4620 RD->setArgPassingRestrictions(
4621 (RecordDecl::ArgPassingKind)Record.readInt());
4622 ReadCXXRecordDefinition(RD, /*Update*/true);
4623
4624 // Visible update is handled separately.
4625 uint64_t LexicalOffset = ReadLocalOffset();
4626 if (!HadRealDefinition && LexicalOffset) {
4627 Record.readLexicalDeclContextStorage(LexicalOffset, RD);
4628 Reader.PendingFakeDefinitionData.erase(OldDD);
4629 }
4630
4631 auto TSK = (TemplateSpecializationKind)Record.readInt();
4632 SourceLocation POI = readSourceLocation();
4633 if (MemberSpecializationInfo *MSInfo =
4634 RD->getMemberSpecializationInfo()) {
4635 MSInfo->setTemplateSpecializationKind(TSK);
4636 MSInfo->setPointOfInstantiation(POI);
4637 } else {
4638 auto *Spec = cast<ClassTemplateSpecializationDecl>(RD);
4639 Spec->setTemplateSpecializationKind(TSK);
4640 Spec->setPointOfInstantiation(POI);
4641
4642 if (Record.readInt()) {
4643 auto *PartialSpec =
4644 readDeclAs<ClassTemplatePartialSpecializationDecl>();
4645 SmallVector<TemplateArgument, 8> TemplArgs;
4646 Record.readTemplateArgumentList(TemplArgs);
4647 auto *TemplArgList = TemplateArgumentList::CreateCopy(
4648 Reader.getContext(), TemplArgs);
4649
4650 // FIXME: If we already have a partial specialization set,
4651 // check that it matches.
4652 if (!Spec->getSpecializedTemplateOrPartial()
4653 .is<ClassTemplatePartialSpecializationDecl *>())
4654 Spec->setInstantiationOf(PartialSpec, TemplArgList);
4655 }
4656 }
4657
4658 RD->setTagKind((TagTypeKind)Record.readInt());
4659 RD->setLocation(readSourceLocation());
4660 RD->setLocStart(readSourceLocation());
4661 RD->setBraceRange(readSourceRange());
4662
4663 if (Record.readInt()) {
4664 AttrVec Attrs;
4665 Record.readAttributes(Attrs);
4666 // If the declaration already has attributes, we assume that some other
4667 // AST file already loaded them.
4668 if (!D->hasAttrs())
4669 D->setAttrsImpl(Attrs, Reader.getContext());
4670 }
4671 break;
4672 }
4673
4674 case UPD_CXX_RESOLVED_DTOR_DELETE: {
4675 // Set the 'operator delete' directly to avoid emitting another update
4676 // record.
4677 auto *Del = readDeclAs<FunctionDecl>();
4678 auto *First = cast<CXXDestructorDecl>(D->getCanonicalDecl());
4679 auto *ThisArg = Record.readExpr();
4680 // FIXME: Check consistency if we have an old and new operator delete.
4681 if (!First->OperatorDelete) {
4682 First->OperatorDelete = Del;
4683 First->OperatorDeleteThisArg = ThisArg;
4684 }
4685 break;
4686 }
4687
4688 case UPD_CXX_RESOLVED_EXCEPTION_SPEC: {
4689 SmallVector<QualType, 8> ExceptionStorage;
4690 auto ESI = Record.readExceptionSpecInfo(ExceptionStorage);
4691
4692 // Update this declaration's exception specification, if needed.
4693 auto *FD = cast<FunctionDecl>(D);
4694 auto *FPT = FD->getType()->castAs<FunctionProtoType>();
4695 // FIXME: If the exception specification is already present, check that it
4696 // matches.
4697 if (isUnresolvedExceptionSpec(FPT->getExceptionSpecType())) {
4698 FD->setType(Reader.getContext().getFunctionType(
4699 FPT->getReturnType(), FPT->getParamTypes(),
4700 FPT->getExtProtoInfo().withExceptionSpec(ESI)));
4701
4702 // When we get to the end of deserializing, see if there are other decls
4703 // that we need to propagate this exception specification onto.
4704 Reader.PendingExceptionSpecUpdates.insert(
4705 std::make_pair(FD->getCanonicalDecl(), FD));
4706 }
4707 break;
4708 }
4709
4710 case UPD_CXX_DEDUCED_RETURN_TYPE: {
4711 auto *FD = cast<FunctionDecl>(D);
4712 QualType DeducedResultType = Record.readType();
4713 Reader.PendingDeducedTypeUpdates.insert(
4714 {FD->getCanonicalDecl(), DeducedResultType});
4715 break;
4716 }
4717
4718 case UPD_DECL_MARKED_USED:
4719 // Maintain AST consistency: any later redeclarations are used too.
4720 D->markUsed(Reader.getContext());
4721 break;
4722
4723 case UPD_MANGLING_NUMBER:
4724 Reader.getContext().setManglingNumber(cast<NamedDecl>(D),
4725 Record.readInt());
4726 break;
4727
4728 case UPD_STATIC_LOCAL_NUMBER:
4729 Reader.getContext().setStaticLocalNumber(cast<VarDecl>(D),
4730 Record.readInt());
4731 break;
4732
4733 case UPD_DECL_MARKED_OPENMP_THREADPRIVATE:
4734 D->addAttr(OMPThreadPrivateDeclAttr::CreateImplicit(
4735 Reader.getContext(), readSourceRange(),
4736 AttributeCommonInfo::AS_Pragma));
4737 break;
4738
4739 case UPD_DECL_MARKED_OPENMP_ALLOCATE: {
4740 auto AllocatorKind =
4741 static_cast<OMPAllocateDeclAttr::AllocatorTypeTy>(Record.readInt());
4742 Expr *Allocator = Record.readExpr();
4743 SourceRange SR = readSourceRange();
4744 D->addAttr(OMPAllocateDeclAttr::CreateImplicit(
4745 Reader.getContext(), AllocatorKind, Allocator, SR,
4746 AttributeCommonInfo::AS_Pragma));
4747 break;
4748 }
4749
4750 case UPD_DECL_EXPORTED: {
4751 unsigned SubmoduleID = readSubmoduleID();
4752 auto *Exported = cast<NamedDecl>(D);
4753 Module *Owner = SubmoduleID ? Reader.getSubmodule(SubmoduleID) : nullptr;
4754 Reader.getContext().mergeDefinitionIntoModule(Exported, Owner);
4755 Reader.PendingMergedDefinitionsToDeduplicate.insert(Exported);
4756 break;
4757 }
4758
4759 case UPD_DECL_MARKED_OPENMP_DECLARETARGET: {
4760 auto MapType = Record.readEnum<OMPDeclareTargetDeclAttr::MapTypeTy>();
4761 auto DevType = Record.readEnum<OMPDeclareTargetDeclAttr::DevTypeTy>();
4762 unsigned Level = Record.readInt();
4763 D->addAttr(OMPDeclareTargetDeclAttr::CreateImplicit(
4764 Reader.getContext(), MapType, DevType, Level, readSourceRange(),
4765 AttributeCommonInfo::AS_Pragma));
4766 break;
4767 }
4768
4769 case UPD_ADDED_ATTR_TO_RECORD:
4770 AttrVec Attrs;
4771 Record.readAttributes(Attrs);
4772 assert(Attrs.size() == 1)(static_cast <bool> (Attrs.size() == 1) ? void (0) : __assert_fail
("Attrs.size() == 1", "/build/llvm-toolchain-snapshot-14~++20210926122410+d23fd8ae8906/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4772, __extension__ __PRETTY_FUNCTION__))
;
4773 D->addAttr(Attrs[0]);
4774 break;
4775 }
4776 }
4777}