Bug Summary

File:clang/lib/Serialization/ASTReaderDecl.cpp
Warning:line 477, column 9
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-13~++20210722111111+b115c038d2d4/build-llvm/tools/clang/lib/Serialization -resource-dir /usr/lib/llvm-13/lib/clang/13.0.0 -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 /build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/build-llvm/tools/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/clang/include -I /build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/build-llvm/include -I /build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/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-13/lib/clang/13.0.0/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-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-13~++20210722111111+b115c038d2d4/build-llvm/tools/clang/lib/Serialization -fdebug-prefix-map=/build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4=. -ferror-limit 19 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -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-2021-07-23-023125-8721-1 -x c++ /build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/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-13~++20210722111111+b115c038d2d4/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) { VisitRecordDeclImpl(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()) {
24
Taking false branch
33
Called C++ object pointer is null
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)
25
Assuming field 'Current' is equal to field 'Start'
488 Current = nullptr;
26
Null pointer value stored to '__begin1.Current'
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-13~++20210722111111+b115c038d2d4/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-13~++20210722111111+b115c038d2d4/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::VisitValueDecl(ValueDecl *VD) {
812 VisitNamedDecl(VD);
813 // For function declarations, defer reading the type in case the function has
814 // a deduced return type that references an entity declared within the
815 // function.
816 if (isa<FunctionDecl>(VD))
817 DeferredTypeID = Record.getGlobalTypeID(Record.readInt());
818 else
819 VD->setType(Record.readType());
820}
821
822void ASTDeclReader::VisitEnumConstantDecl(EnumConstantDecl *ECD) {
823 VisitValueDecl(ECD);
824 if (Record.readInt())
825 ECD->setInitExpr(Record.readExpr());
826 ECD->setInitVal(Record.readAPSInt());
827 mergeMergeable(ECD);
828}
829
830void ASTDeclReader::VisitDeclaratorDecl(DeclaratorDecl *DD) {
831 VisitValueDecl(DD);
832 DD->setInnerLocStart(readSourceLocation());
833 if (Record.readInt()) { // hasExtInfo
834 auto *Info = new (Reader.getContext()) DeclaratorDecl::ExtInfo();
835 Record.readQualifierInfo(*Info);
836 Info->TrailingRequiresClause = Record.readExpr();
837 DD->DeclInfo = Info;
838 }
839 QualType TSIType = Record.readType();
840 DD->setTypeSourceInfo(
841 TSIType.isNull() ? nullptr
842 : Reader.getContext().CreateTypeSourceInfo(TSIType));
843}
844
845void ASTDeclReader::VisitFunctionDecl(FunctionDecl *FD) {
846 RedeclarableResult Redecl = VisitRedeclarable(FD);
847 VisitDeclaratorDecl(FD);
848
849 // Attach a type to this function. Use the real type if possible, but fall
850 // back to the type as written if it involves a deduced return type.
851 if (FD->getTypeSourceInfo() &&
852 FD->getTypeSourceInfo()->getType()->castAs<FunctionType>()
853 ->getReturnType()->getContainedAutoType()) {
854 // We'll set up the real type in Visit, once we've finished loading the
855 // function.
856 FD->setType(FD->getTypeSourceInfo()->getType());
857 Reader.PendingFunctionTypes.push_back({FD, DeferredTypeID});
858 } else {
859 FD->setType(Reader.GetType(DeferredTypeID));
860 }
861 DeferredTypeID = 0;
862
863 FD->DNLoc = Record.readDeclarationNameLoc(FD->getDeclName());
864 FD->IdentifierNamespace = Record.readInt();
865
866 // FunctionDecl's body is handled last at ASTDeclReader::Visit,
867 // after everything else is read.
868
869 FD->setStorageClass(static_cast<StorageClass>(Record.readInt()));
870 FD->setInlineSpecified(Record.readInt());
871 FD->setImplicitlyInline(Record.readInt());
872 FD->setVirtualAsWritten(Record.readInt());
873 // We defer calling `FunctionDecl::setPure()` here as for methods of
874 // `CXXTemplateSpecializationDecl`s, we may not have connected up the
875 // definition (which is required for `setPure`).
876 const bool Pure = Record.readInt();
877 FD->setHasInheritedPrototype(Record.readInt());
878 FD->setHasWrittenPrototype(Record.readInt());
879 FD->setDeletedAsWritten(Record.readInt());
880 FD->setTrivial(Record.readInt());
881 FD->setTrivialForCall(Record.readInt());
882 FD->setDefaulted(Record.readInt());
883 FD->setExplicitlyDefaulted(Record.readInt());
884 FD->setHasImplicitReturnZero(Record.readInt());
885 FD->setConstexprKind(static_cast<ConstexprSpecKind>(Record.readInt()));
886 FD->setUsesSEHTry(Record.readInt());
887 FD->setHasSkippedBody(Record.readInt());
888 FD->setIsMultiVersion(Record.readInt());
889 FD->setLateTemplateParsed(Record.readInt());
890
891 FD->setCachedLinkage(static_cast<Linkage>(Record.readInt()));
892 FD->EndRangeLoc = readSourceLocation();
893
894 FD->ODRHash = Record.readInt();
895 FD->setHasODRHash(true);
896
897 if (FD->isDefaulted()) {
898 if (unsigned NumLookups = Record.readInt()) {
899 SmallVector<DeclAccessPair, 8> Lookups;
900 for (unsigned I = 0; I != NumLookups; ++I) {
901 NamedDecl *ND = Record.readDeclAs<NamedDecl>();
902 AccessSpecifier AS = (AccessSpecifier)Record.readInt();
903 Lookups.push_back(DeclAccessPair::make(ND, AS));
904 }
905 FD->setDefaultedFunctionInfo(FunctionDecl::DefaultedFunctionInfo::Create(
906 Reader.getContext(), Lookups));
907 }
908 }
909
910 switch ((FunctionDecl::TemplatedKind)Record.readInt()) {
911 case FunctionDecl::TK_NonTemplate:
912 mergeRedeclarable(FD, Redecl);
913 break;
914 case FunctionDecl::TK_FunctionTemplate:
915 // Merged when we merge the template.
916 FD->setDescribedFunctionTemplate(readDeclAs<FunctionTemplateDecl>());
917 break;
918 case FunctionDecl::TK_MemberSpecialization: {
919 auto *InstFD = readDeclAs<FunctionDecl>();
920 auto TSK = (TemplateSpecializationKind)Record.readInt();
921 SourceLocation POI = readSourceLocation();
922 FD->setInstantiationOfMemberFunction(Reader.getContext(), InstFD, TSK);
923 FD->getMemberSpecializationInfo()->setPointOfInstantiation(POI);
924 mergeRedeclarable(FD, Redecl);
925 break;
926 }
927 case FunctionDecl::TK_FunctionTemplateSpecialization: {
928 auto *Template = readDeclAs<FunctionTemplateDecl>();
929 auto TSK = (TemplateSpecializationKind)Record.readInt();
930
931 // Template arguments.
932 SmallVector<TemplateArgument, 8> TemplArgs;
933 Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
934
935 // Template args as written.
936 SmallVector<TemplateArgumentLoc, 8> TemplArgLocs;
937 SourceLocation LAngleLoc, RAngleLoc;
938 bool HasTemplateArgumentsAsWritten = Record.readInt();
939 if (HasTemplateArgumentsAsWritten) {
940 unsigned NumTemplateArgLocs = Record.readInt();
941 TemplArgLocs.reserve(NumTemplateArgLocs);
942 for (unsigned i = 0; i != NumTemplateArgLocs; ++i)
943 TemplArgLocs.push_back(Record.readTemplateArgumentLoc());
944
945 LAngleLoc = readSourceLocation();
946 RAngleLoc = readSourceLocation();
947 }
948
949 SourceLocation POI = readSourceLocation();
950
951 ASTContext &C = Reader.getContext();
952 TemplateArgumentList *TemplArgList
953 = TemplateArgumentList::CreateCopy(C, TemplArgs);
954 TemplateArgumentListInfo TemplArgsInfo(LAngleLoc, RAngleLoc);
955 for (unsigned i = 0, e = TemplArgLocs.size(); i != e; ++i)
956 TemplArgsInfo.addArgument(TemplArgLocs[i]);
957
958 MemberSpecializationInfo *MSInfo = nullptr;
959 if (Record.readInt()) {
960 auto *FD = readDeclAs<FunctionDecl>();
961 auto TSK = (TemplateSpecializationKind)Record.readInt();
962 SourceLocation POI = readSourceLocation();
963
964 MSInfo = new (C) MemberSpecializationInfo(FD, TSK);
965 MSInfo->setPointOfInstantiation(POI);
966 }
967
968 FunctionTemplateSpecializationInfo *FTInfo =
969 FunctionTemplateSpecializationInfo::Create(
970 C, FD, Template, TSK, TemplArgList,
971 HasTemplateArgumentsAsWritten ? &TemplArgsInfo : nullptr, POI,
972 MSInfo);
973 FD->TemplateOrSpecialization = FTInfo;
974
975 if (FD->isCanonicalDecl()) { // if canonical add to template's set.
976 // The template that contains the specializations set. It's not safe to
977 // use getCanonicalDecl on Template since it may still be initializing.
978 auto *CanonTemplate = readDeclAs<FunctionTemplateDecl>();
979 // Get the InsertPos by FindNodeOrInsertPos() instead of calling
980 // InsertNode(FTInfo) directly to avoid the getASTContext() call in
981 // FunctionTemplateSpecializationInfo's Profile().
982 // We avoid getASTContext because a decl in the parent hierarchy may
983 // be initializing.
984 llvm::FoldingSetNodeID ID;
985 FunctionTemplateSpecializationInfo::Profile(ID, TemplArgs, C);
986 void *InsertPos = nullptr;
987 FunctionTemplateDecl::Common *CommonPtr = CanonTemplate->getCommonPtr();
988 FunctionTemplateSpecializationInfo *ExistingInfo =
989 CommonPtr->Specializations.FindNodeOrInsertPos(ID, InsertPos);
990 if (InsertPos)
991 CommonPtr->Specializations.InsertNode(FTInfo, InsertPos);
992 else {
993 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 994, __extension__ __PRETTY_FUNCTION__))
994 "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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 994, __extension__ __PRETTY_FUNCTION__))
;
995 mergeRedeclarable(FD, ExistingInfo->getFunction(), Redecl);
996 }
997 }
998 break;
999 }
1000 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: {
1001 // Templates.
1002 UnresolvedSet<8> TemplDecls;
1003 unsigned NumTemplates = Record.readInt();
1004 while (NumTemplates--)
1005 TemplDecls.addDecl(readDeclAs<NamedDecl>());
1006
1007 // Templates args.
1008 TemplateArgumentListInfo TemplArgs;
1009 unsigned NumArgs = Record.readInt();
1010 while (NumArgs--)
1011 TemplArgs.addArgument(Record.readTemplateArgumentLoc());
1012 TemplArgs.setLAngleLoc(readSourceLocation());
1013 TemplArgs.setRAngleLoc(readSourceLocation());
1014
1015 FD->setDependentTemplateSpecialization(Reader.getContext(),
1016 TemplDecls, TemplArgs);
1017 // These are not merged; we don't need to merge redeclarations of dependent
1018 // template friends.
1019 break;
1020 }
1021 }
1022
1023 // Defer calling `setPure` until merging above has guaranteed we've set
1024 // `DefinitionData` (as this will need to access it).
1025 FD->setPure(Pure);
1026
1027 // Read in the parameters.
1028 unsigned NumParams = Record.readInt();
1029 SmallVector<ParmVarDecl *, 16> Params;
1030 Params.reserve(NumParams);
1031 for (unsigned I = 0; I != NumParams; ++I)
1032 Params.push_back(readDeclAs<ParmVarDecl>());
1033 FD->setParams(Reader.getContext(), Params);
1034}
1035
1036void ASTDeclReader::VisitObjCMethodDecl(ObjCMethodDecl *MD) {
1037 VisitNamedDecl(MD);
1038 if (Record.readInt()) {
1039 // Load the body on-demand. Most clients won't care, because method
1040 // definitions rarely show up in headers.
1041 Reader.PendingBodies[MD] = GetCurrentCursorOffset();
1042 HasPendingBody = true;
1043 }
1044 MD->setSelfDecl(readDeclAs<ImplicitParamDecl>());
1045 MD->setCmdDecl(readDeclAs<ImplicitParamDecl>());
1046 MD->setInstanceMethod(Record.readInt());
1047 MD->setVariadic(Record.readInt());
1048 MD->setPropertyAccessor(Record.readInt());
1049 MD->setSynthesizedAccessorStub(Record.readInt());
1050 MD->setDefined(Record.readInt());
1051 MD->setOverriding(Record.readInt());
1052 MD->setHasSkippedBody(Record.readInt());
1053
1054 MD->setIsRedeclaration(Record.readInt());
1055 MD->setHasRedeclaration(Record.readInt());
1056 if (MD->hasRedeclaration())
1057 Reader.getContext().setObjCMethodRedeclaration(MD,
1058 readDeclAs<ObjCMethodDecl>());
1059
1060 MD->setDeclImplementation((ObjCMethodDecl::ImplementationControl)Record.readInt());
1061 MD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record.readInt());
1062 MD->setRelatedResultType(Record.readInt());
1063 MD->setReturnType(Record.readType());
1064 MD->setReturnTypeSourceInfo(readTypeSourceInfo());
1065 MD->DeclEndLoc = readSourceLocation();
1066 unsigned NumParams = Record.readInt();
1067 SmallVector<ParmVarDecl *, 16> Params;
1068 Params.reserve(NumParams);
1069 for (unsigned I = 0; I != NumParams; ++I)
1070 Params.push_back(readDeclAs<ParmVarDecl>());
1071
1072 MD->setSelLocsKind((SelectorLocationsKind)Record.readInt());
1073 unsigned NumStoredSelLocs = Record.readInt();
1074 SmallVector<SourceLocation, 16> SelLocs;
1075 SelLocs.reserve(NumStoredSelLocs);
1076 for (unsigned i = 0; i != NumStoredSelLocs; ++i)
1077 SelLocs.push_back(readSourceLocation());
1078
1079 MD->setParamsAndSelLocs(Reader.getContext(), Params, SelLocs);
1080}
1081
1082void ASTDeclReader::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) {
1083 VisitTypedefNameDecl(D);
1084
1085 D->Variance = Record.readInt();
1086 D->Index = Record.readInt();
1087 D->VarianceLoc = readSourceLocation();
1088 D->ColonLoc = readSourceLocation();
1089}
1090
1091void ASTDeclReader::VisitObjCContainerDecl(ObjCContainerDecl *CD) {
1092 VisitNamedDecl(CD);
1093 CD->setAtStartLoc(readSourceLocation());
1094 CD->setAtEndRange(readSourceRange());
1095}
1096
1097ObjCTypeParamList *ASTDeclReader::ReadObjCTypeParamList() {
1098 unsigned numParams = Record.readInt();
1099 if (numParams == 0)
1100 return nullptr;
1101
1102 SmallVector<ObjCTypeParamDecl *, 4> typeParams;
1103 typeParams.reserve(numParams);
1104 for (unsigned i = 0; i != numParams; ++i) {
1105 auto *typeParam = readDeclAs<ObjCTypeParamDecl>();
1106 if (!typeParam)
1107 return nullptr;
1108
1109 typeParams.push_back(typeParam);
1110 }
1111
1112 SourceLocation lAngleLoc = readSourceLocation();
1113 SourceLocation rAngleLoc = readSourceLocation();
1114
1115 return ObjCTypeParamList::create(Reader.getContext(), lAngleLoc,
1116 typeParams, rAngleLoc);
1117}
1118
1119void ASTDeclReader::ReadObjCDefinitionData(
1120 struct ObjCInterfaceDecl::DefinitionData &Data) {
1121 // Read the superclass.
1122 Data.SuperClassTInfo = readTypeSourceInfo();
1123
1124 Data.EndLoc = readSourceLocation();
1125 Data.HasDesignatedInitializers = Record.readInt();
1126
1127 // Read the directly referenced protocols and their SourceLocations.
1128 unsigned NumProtocols = Record.readInt();
1129 SmallVector<ObjCProtocolDecl *, 16> Protocols;
1130 Protocols.reserve(NumProtocols);
1131 for (unsigned I = 0; I != NumProtocols; ++I)
1132 Protocols.push_back(readDeclAs<ObjCProtocolDecl>());
1133 SmallVector<SourceLocation, 16> ProtoLocs;
1134 ProtoLocs.reserve(NumProtocols);
1135 for (unsigned I = 0; I != NumProtocols; ++I)
1136 ProtoLocs.push_back(readSourceLocation());
1137 Data.ReferencedProtocols.set(Protocols.data(), NumProtocols, ProtoLocs.data(),
1138 Reader.getContext());
1139
1140 // Read the transitive closure of protocols referenced by this class.
1141 NumProtocols = Record.readInt();
1142 Protocols.clear();
1143 Protocols.reserve(NumProtocols);
1144 for (unsigned I = 0; I != NumProtocols; ++I)
1145 Protocols.push_back(readDeclAs<ObjCProtocolDecl>());
1146 Data.AllReferencedProtocols.set(Protocols.data(), NumProtocols,
1147 Reader.getContext());
1148}
1149
1150void ASTDeclReader::MergeDefinitionData(ObjCInterfaceDecl *D,
1151 struct ObjCInterfaceDecl::DefinitionData &&NewDD) {
1152 // FIXME: odr checking?
1153}
1154
1155void ASTDeclReader::VisitObjCInterfaceDecl(ObjCInterfaceDecl *ID) {
1156 RedeclarableResult Redecl = VisitRedeclarable(ID);
1157 VisitObjCContainerDecl(ID);
1158 DeferredTypeID = Record.getGlobalTypeID(Record.readInt());
1159 mergeRedeclarable(ID, Redecl);
1160
1161 ID->TypeParamList = ReadObjCTypeParamList();
1162 if (Record.readInt()) {
1163 // Read the definition.
1164 ID->allocateDefinitionData();
1165
1166 ReadObjCDefinitionData(ID->data());
1167 ObjCInterfaceDecl *Canon = ID->getCanonicalDecl();
1168 if (Canon->Data.getPointer()) {
1169 // If we already have a definition, keep the definition invariant and
1170 // merge the data.
1171 MergeDefinitionData(Canon, std::move(ID->data()));
1172 ID->Data = Canon->Data;
1173 } else {
1174 // Set the definition data of the canonical declaration, so other
1175 // redeclarations will see it.
1176 ID->getCanonicalDecl()->Data = ID->Data;
1177
1178 // We will rebuild this list lazily.
1179 ID->setIvarList(nullptr);
1180 }
1181
1182 // Note that we have deserialized a definition.
1183 Reader.PendingDefinitions.insert(ID);
1184
1185 // Note that we've loaded this Objective-C class.
1186 Reader.ObjCClassesLoaded.push_back(ID);
1187 } else {
1188 ID->Data = ID->getCanonicalDecl()->Data;
1189 }
1190}
1191
1192void ASTDeclReader::VisitObjCIvarDecl(ObjCIvarDecl *IVD) {
1193 VisitFieldDecl(IVD);
1194 IVD->setAccessControl((ObjCIvarDecl::AccessControl)Record.readInt());
1195 // This field will be built lazily.
1196 IVD->setNextIvar(nullptr);
1197 bool synth = Record.readInt();
1198 IVD->setSynthesize(synth);
1199}
1200
1201void ASTDeclReader::ReadObjCDefinitionData(
1202 struct ObjCProtocolDecl::DefinitionData &Data) {
1203 unsigned NumProtoRefs = Record.readInt();
1204 SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
1205 ProtoRefs.reserve(NumProtoRefs);
1206 for (unsigned I = 0; I != NumProtoRefs; ++I)
1207 ProtoRefs.push_back(readDeclAs<ObjCProtocolDecl>());
1208 SmallVector<SourceLocation, 16> ProtoLocs;
1209 ProtoLocs.reserve(NumProtoRefs);
1210 for (unsigned I = 0; I != NumProtoRefs; ++I)
1211 ProtoLocs.push_back(readSourceLocation());
1212 Data.ReferencedProtocols.set(ProtoRefs.data(), NumProtoRefs,
1213 ProtoLocs.data(), Reader.getContext());
1214}
1215
1216void ASTDeclReader::MergeDefinitionData(ObjCProtocolDecl *D,
1217 struct ObjCProtocolDecl::DefinitionData &&NewDD) {
1218 // FIXME: odr checking?
1219}
1220
1221void ASTDeclReader::VisitObjCProtocolDecl(ObjCProtocolDecl *PD) {
1222 RedeclarableResult Redecl = VisitRedeclarable(PD);
1223 VisitObjCContainerDecl(PD);
1224 mergeRedeclarable(PD, Redecl);
1225
1226 if (Record.readInt()) {
1227 // Read the definition.
1228 PD->allocateDefinitionData();
1229
1230 ReadObjCDefinitionData(PD->data());
1231
1232 ObjCProtocolDecl *Canon = PD->getCanonicalDecl();
1233 if (Canon->Data.getPointer()) {
1234 // If we already have a definition, keep the definition invariant and
1235 // merge the data.
1236 MergeDefinitionData(Canon, std::move(PD->data()));
1237 PD->Data = Canon->Data;
1238 } else {
1239 // Set the definition data of the canonical declaration, so other
1240 // redeclarations will see it.
1241 PD->getCanonicalDecl()->Data = PD->Data;
1242 }
1243 // Note that we have deserialized a definition.
1244 Reader.PendingDefinitions.insert(PD);
1245 } else {
1246 PD->Data = PD->getCanonicalDecl()->Data;
1247 }
1248}
1249
1250void ASTDeclReader::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *FD) {
1251 VisitFieldDecl(FD);
1252}
1253
1254void ASTDeclReader::VisitObjCCategoryDecl(ObjCCategoryDecl *CD) {
1255 VisitObjCContainerDecl(CD);
1256 CD->setCategoryNameLoc(readSourceLocation());
1257 CD->setIvarLBraceLoc(readSourceLocation());
1258 CD->setIvarRBraceLoc(readSourceLocation());
1259
1260 // Note that this category has been deserialized. We do this before
1261 // deserializing the interface declaration, so that it will consider this
1262 /// category.
1263 Reader.CategoriesDeserialized.insert(CD);
1264
1265 CD->ClassInterface = readDeclAs<ObjCInterfaceDecl>();
1266 CD->TypeParamList = ReadObjCTypeParamList();
1267 unsigned NumProtoRefs = Record.readInt();
1268 SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
1269 ProtoRefs.reserve(NumProtoRefs);
1270 for (unsigned I = 0; I != NumProtoRefs; ++I)
1271 ProtoRefs.push_back(readDeclAs<ObjCProtocolDecl>());
1272 SmallVector<SourceLocation, 16> ProtoLocs;
1273 ProtoLocs.reserve(NumProtoRefs);
1274 for (unsigned I = 0; I != NumProtoRefs; ++I)
1275 ProtoLocs.push_back(readSourceLocation());
1276 CD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
1277 Reader.getContext());
1278
1279 // Protocols in the class extension belong to the class.
1280 if (NumProtoRefs > 0 && CD->ClassInterface && CD->IsClassExtension())
1281 CD->ClassInterface->mergeClassExtensionProtocolList(
1282 (ObjCProtocolDecl *const *)ProtoRefs.data(), NumProtoRefs,
1283 Reader.getContext());
1284}
1285
1286void ASTDeclReader::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *CAD) {
1287 VisitNamedDecl(CAD);
1288 CAD->setClassInterface(readDeclAs<ObjCInterfaceDecl>());
1289}
1290
1291void ASTDeclReader::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
1292 VisitNamedDecl(D);
1293 D->setAtLoc(readSourceLocation());
1294 D->setLParenLoc(readSourceLocation());
1295 QualType T = Record.readType();
1296 TypeSourceInfo *TSI = readTypeSourceInfo();
1297 D->setType(T, TSI);
1298 D->setPropertyAttributes((ObjCPropertyAttribute::Kind)Record.readInt());
1299 D->setPropertyAttributesAsWritten(
1300 (ObjCPropertyAttribute::Kind)Record.readInt());
1301 D->setPropertyImplementation(
1302 (ObjCPropertyDecl::PropertyControl)Record.readInt());
1303 DeclarationName GetterName = Record.readDeclarationName();
1304 SourceLocation GetterLoc = readSourceLocation();
1305 D->setGetterName(GetterName.getObjCSelector(), GetterLoc);
1306 DeclarationName SetterName = Record.readDeclarationName();
1307 SourceLocation SetterLoc = readSourceLocation();
1308 D->setSetterName(SetterName.getObjCSelector(), SetterLoc);
1309 D->setGetterMethodDecl(readDeclAs<ObjCMethodDecl>());
1310 D->setSetterMethodDecl(readDeclAs<ObjCMethodDecl>());
1311 D->setPropertyIvarDecl(readDeclAs<ObjCIvarDecl>());
1312}
1313
1314void ASTDeclReader::VisitObjCImplDecl(ObjCImplDecl *D) {
1315 VisitObjCContainerDecl(D);
1316 D->setClassInterface(readDeclAs<ObjCInterfaceDecl>());
1317}
1318
1319void ASTDeclReader::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
1320 VisitObjCImplDecl(D);
1321 D->CategoryNameLoc = readSourceLocation();
1322}
1323
1324void ASTDeclReader::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
1325 VisitObjCImplDecl(D);
1326 D->setSuperClass(readDeclAs<ObjCInterfaceDecl>());
1327 D->SuperLoc = readSourceLocation();
1328 D->setIvarLBraceLoc(readSourceLocation());
1329 D->setIvarRBraceLoc(readSourceLocation());
1330 D->setHasNonZeroConstructors(Record.readInt());
1331 D->setHasDestructors(Record.readInt());
1332 D->NumIvarInitializers = Record.readInt();
1333 if (D->NumIvarInitializers)
1334 D->IvarInitializers = ReadGlobalOffset();
1335}
1336
1337void ASTDeclReader::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
1338 VisitDecl(D);
1339 D->setAtLoc(readSourceLocation());
1340 D->setPropertyDecl(readDeclAs<ObjCPropertyDecl>());
1341 D->PropertyIvarDecl = readDeclAs<ObjCIvarDecl>();
1342 D->IvarLoc = readSourceLocation();
1343 D->setGetterMethodDecl(readDeclAs<ObjCMethodDecl>());
1344 D->setSetterMethodDecl(readDeclAs<ObjCMethodDecl>());
1345 D->setGetterCXXConstructor(Record.readExpr());
1346 D->setSetterCXXAssignment(Record.readExpr());
1347}
1348
1349void ASTDeclReader::VisitFieldDecl(FieldDecl *FD) {
1350 VisitDeclaratorDecl(FD);
1351 FD->Mutable = Record.readInt();
1352
1353 if (auto ISK = static_cast<FieldDecl::InitStorageKind>(Record.readInt())) {
1354 FD->InitStorage.setInt(ISK);
1355 FD->InitStorage.setPointer(ISK == FieldDecl::ISK_CapturedVLAType
1356 ? Record.readType().getAsOpaquePtr()
1357 : Record.readExpr());
1358 }
1359
1360 if (auto *BW = Record.readExpr())
1361 FD->setBitWidth(BW);
1362
1363 if (!FD->getDeclName()) {
1364 if (auto *Tmpl = readDeclAs<FieldDecl>())
1365 Reader.getContext().setInstantiatedFromUnnamedFieldDecl(FD, Tmpl);
1366 }
1367 mergeMergeable(FD);
1368}
1369
1370void ASTDeclReader::VisitMSPropertyDecl(MSPropertyDecl *PD) {
1371 VisitDeclaratorDecl(PD);
1372 PD->GetterId = Record.readIdentifier();
1373 PD->SetterId = Record.readIdentifier();
1374}
1375
1376void ASTDeclReader::VisitMSGuidDecl(MSGuidDecl *D) {
1377 VisitValueDecl(D);
1378 D->PartVal.Part1 = Record.readInt();
1379 D->PartVal.Part2 = Record.readInt();
1380 D->PartVal.Part3 = Record.readInt();
1381 for (auto &C : D->PartVal.Part4And5)
1382 C = Record.readInt();
1383
1384 // Add this GUID to the AST context's lookup structure, and merge if needed.
1385 if (MSGuidDecl *Existing = Reader.getContext().MSGuidDecls.GetOrInsertNode(D))
1386 Reader.getContext().setPrimaryMergedDecl(D, Existing->getCanonicalDecl());
1387}
1388
1389void ASTDeclReader::VisitTemplateParamObjectDecl(TemplateParamObjectDecl *D) {
1390 VisitValueDecl(D);
1391 D->Value = Record.readAPValue();
1392
1393 // Add this template parameter object to the AST context's lookup structure,
1394 // and merge if needed.
1395 if (TemplateParamObjectDecl *Existing =
1396 Reader.getContext().TemplateParamObjectDecls.GetOrInsertNode(D))
1397 Reader.getContext().setPrimaryMergedDecl(D, Existing->getCanonicalDecl());
1398}
1399
1400void ASTDeclReader::VisitIndirectFieldDecl(IndirectFieldDecl *FD) {
1401 VisitValueDecl(FD);
1402
1403 FD->ChainingSize = Record.readInt();
1404 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 1404, __extension__ __PRETTY_FUNCTION__))
;
1405 FD->Chaining = new (Reader.getContext())NamedDecl*[FD->ChainingSize];
1406
1407 for (unsigned I = 0; I != FD->ChainingSize; ++I)
1408 FD->Chaining[I] = readDeclAs<NamedDecl>();
1409
1410 mergeMergeable(FD);
1411}
1412
1413ASTDeclReader::RedeclarableResult ASTDeclReader::VisitVarDeclImpl(VarDecl *VD) {
1414 RedeclarableResult Redecl = VisitRedeclarable(VD);
1415 VisitDeclaratorDecl(VD);
1416
1417 VD->VarDeclBits.SClass = (StorageClass)Record.readInt();
1418 VD->VarDeclBits.TSCSpec = Record.readInt();
1419 VD->VarDeclBits.InitStyle = Record.readInt();
1420 VD->VarDeclBits.ARCPseudoStrong = Record.readInt();
1421 if (!isa<ParmVarDecl>(VD)) {
1422 VD->NonParmVarDeclBits.IsThisDeclarationADemotedDefinition =
1423 Record.readInt();
1424 VD->NonParmVarDeclBits.ExceptionVar = Record.readInt();
1425 VD->NonParmVarDeclBits.NRVOVariable = Record.readInt();
1426 VD->NonParmVarDeclBits.CXXForRangeDecl = Record.readInt();
1427 VD->NonParmVarDeclBits.ObjCForDecl = Record.readInt();
1428 VD->NonParmVarDeclBits.IsInline = Record.readInt();
1429 VD->NonParmVarDeclBits.IsInlineSpecified = Record.readInt();
1430 VD->NonParmVarDeclBits.IsConstexpr = Record.readInt();
1431 VD->NonParmVarDeclBits.IsInitCapture = Record.readInt();
1432 VD->NonParmVarDeclBits.PreviousDeclInSameBlockScope = Record.readInt();
1433 VD->NonParmVarDeclBits.ImplicitParamKind = Record.readInt();
1434 VD->NonParmVarDeclBits.EscapingByref = Record.readInt();
1435 }
1436 auto VarLinkage = Linkage(Record.readInt());
1437 VD->setCachedLinkage(VarLinkage);
1438
1439 // Reconstruct the one piece of the IdentifierNamespace that we need.
1440 if (VD->getStorageClass() == SC_Extern && VarLinkage != NoLinkage &&
1441 VD->getLexicalDeclContext()->isFunctionOrMethod())
1442 VD->setLocalExternDecl();
1443
1444 if (uint64_t Val = Record.readInt()) {
1445 VD->setInit(Record.readExpr());
1446 if (Val != 1) {
1447 EvaluatedStmt *Eval = VD->ensureEvaluatedStmt();
1448 Eval->HasConstantInitialization = (Val & 2) != 0;
1449 Eval->HasConstantDestruction = (Val & 4) != 0;
1450 }
1451 }
1452
1453 if (VD->hasAttr<BlocksAttr>() && VD->getType()->getAsCXXRecordDecl()) {
1454 Expr *CopyExpr = Record.readExpr();
1455 if (CopyExpr)
1456 Reader.getContext().setBlockVarCopyInit(VD, CopyExpr, Record.readInt());
1457 }
1458
1459 if (VD->getStorageDuration() == SD_Static && Record.readInt()) {
1460 Reader.DefinitionSource[VD] =
1461 Loc.F->Kind == ModuleKind::MK_MainFile ||
1462 Reader.getContext().getLangOpts().BuildingPCHWithObjectFile;
1463 }
1464
1465 enum VarKind {
1466 VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization
1467 };
1468 switch ((VarKind)Record.readInt()) {
1469 case VarNotTemplate:
1470 // Only true variables (not parameters or implicit parameters) can be
1471 // merged; the other kinds are not really redeclarable at all.
1472 if (!isa<ParmVarDecl>(VD) && !isa<ImplicitParamDecl>(VD) &&
1473 !isa<VarTemplateSpecializationDecl>(VD))
1474 mergeRedeclarable(VD, Redecl);
1475 break;
1476 case VarTemplate:
1477 // Merged when we merge the template.
1478 VD->setDescribedVarTemplate(readDeclAs<VarTemplateDecl>());
1479 break;
1480 case StaticDataMemberSpecialization: { // HasMemberSpecializationInfo.
1481 auto *Tmpl = readDeclAs<VarDecl>();
1482 auto TSK = (TemplateSpecializationKind)Record.readInt();
1483 SourceLocation POI = readSourceLocation();
1484 Reader.getContext().setInstantiatedFromStaticDataMember(VD, Tmpl, TSK,POI);
1485 mergeRedeclarable(VD, Redecl);
1486 break;
1487 }
1488 }
1489
1490 return Redecl;
1491}
1492
1493void ASTDeclReader::VisitImplicitParamDecl(ImplicitParamDecl *PD) {
1494 VisitVarDecl(PD);
1495}
1496
1497void ASTDeclReader::VisitParmVarDecl(ParmVarDecl *PD) {
1498 VisitVarDecl(PD);
1499 unsigned isObjCMethodParam = Record.readInt();
1500 unsigned scopeDepth = Record.readInt();
1501 unsigned scopeIndex = Record.readInt();
1502 unsigned declQualifier = Record.readInt();
1503 if (isObjCMethodParam) {
1504 assert(scopeDepth == 0)(static_cast <bool> (scopeDepth == 0) ? void (0) : __assert_fail
("scopeDepth == 0", "/build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 1504, __extension__ __PRETTY_FUNCTION__))
;
1505 PD->setObjCMethodScopeInfo(scopeIndex);
1506 PD->ParmVarDeclBits.ScopeDepthOrObjCQuals = declQualifier;
1507 } else {
1508 PD->setScopeInfo(scopeDepth, scopeIndex);
1509 }
1510 PD->ParmVarDeclBits.IsKNRPromoted = Record.readInt();
1511 PD->ParmVarDeclBits.HasInheritedDefaultArg = Record.readInt();
1512 if (Record.readInt()) // hasUninstantiatedDefaultArg.
1513 PD->setUninstantiatedDefaultArg(Record.readExpr());
1514
1515 // FIXME: If this is a redeclaration of a function from another module, handle
1516 // inheritance of default arguments.
1517}
1518
1519void ASTDeclReader::VisitDecompositionDecl(DecompositionDecl *DD) {
1520 VisitVarDecl(DD);
1521 auto **BDs = DD->getTrailingObjects<BindingDecl *>();
1522 for (unsigned I = 0; I != DD->NumBindings; ++I) {
1523 BDs[I] = readDeclAs<BindingDecl>();
1524 BDs[I]->setDecomposedDecl(DD);
1525 }
1526}
1527
1528void ASTDeclReader::VisitBindingDecl(BindingDecl *BD) {
1529 VisitValueDecl(BD);
1530 BD->Binding = Record.readExpr();
1531}
1532
1533void ASTDeclReader::VisitFileScopeAsmDecl(FileScopeAsmDecl *AD) {
1534 VisitDecl(AD);
1535 AD->setAsmString(cast<StringLiteral>(Record.readExpr()));
1536 AD->setRParenLoc(readSourceLocation());
1537}
1538
1539void ASTDeclReader::VisitBlockDecl(BlockDecl *BD) {
1540 VisitDecl(BD);
1541 BD->setBody(cast_or_null<CompoundStmt>(Record.readStmt()));
1542 BD->setSignatureAsWritten(readTypeSourceInfo());
1543 unsigned NumParams = Record.readInt();
1544 SmallVector<ParmVarDecl *, 16> Params;
1545 Params.reserve(NumParams);
1546 for (unsigned I = 0; I != NumParams; ++I)
1547 Params.push_back(readDeclAs<ParmVarDecl>());
1548 BD->setParams(Params);
1549
1550 BD->setIsVariadic(Record.readInt());
1551 BD->setBlockMissingReturnType(Record.readInt());
1552 BD->setIsConversionFromLambda(Record.readInt());
1553 BD->setDoesNotEscape(Record.readInt());
1554 BD->setCanAvoidCopyToHeap(Record.readInt());
1555
1556 bool capturesCXXThis = Record.readInt();
1557 unsigned numCaptures = Record.readInt();
1558 SmallVector<BlockDecl::Capture, 16> captures;
1559 captures.reserve(numCaptures);
1560 for (unsigned i = 0; i != numCaptures; ++i) {
1561 auto *decl = readDeclAs<VarDecl>();
1562 unsigned flags = Record.readInt();
1563 bool byRef = (flags & 1);
1564 bool nested = (flags & 2);
1565 Expr *copyExpr = ((flags & 4) ? Record.readExpr() : nullptr);
1566
1567 captures.push_back(BlockDecl::Capture(decl, byRef, nested, copyExpr));
1568 }
1569 BD->setCaptures(Reader.getContext(), captures, capturesCXXThis);
1570}
1571
1572void ASTDeclReader::VisitCapturedDecl(CapturedDecl *CD) {
1573 VisitDecl(CD);
1574 unsigned ContextParamPos = Record.readInt();
1575 CD->setNothrow(Record.readInt() != 0);
1576 // Body is set by VisitCapturedStmt.
1577 for (unsigned I = 0; I < CD->NumParams; ++I) {
1578 if (I != ContextParamPos)
1579 CD->setParam(I, readDeclAs<ImplicitParamDecl>());
1580 else
1581 CD->setContextParam(I, readDeclAs<ImplicitParamDecl>());
1582 }
1583}
1584
1585void ASTDeclReader::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
1586 VisitDecl(D);
1587 D->setLanguage((LinkageSpecDecl::LanguageIDs)Record.readInt());
1588 D->setExternLoc(readSourceLocation());
1589 D->setRBraceLoc(readSourceLocation());
1590}
1591
1592void ASTDeclReader::VisitExportDecl(ExportDecl *D) {
1593 VisitDecl(D);
1594 D->RBraceLoc = readSourceLocation();
1595}
1596
1597void ASTDeclReader::VisitLabelDecl(LabelDecl *D) {
1598 VisitNamedDecl(D);
1599 D->setLocStart(readSourceLocation());
1600}
1601
1602void ASTDeclReader::VisitNamespaceDecl(NamespaceDecl *D) {
1603 RedeclarableResult Redecl = VisitRedeclarable(D);
1604 VisitNamedDecl(D);
1605 D->setInline(Record.readInt());
1606 D->LocStart = readSourceLocation();
1607 D->RBraceLoc = readSourceLocation();
1608
1609 // Defer loading the anonymous namespace until we've finished merging
1610 // this namespace; loading it might load a later declaration of the
1611 // same namespace, and we have an invariant that older declarations
1612 // get merged before newer ones try to merge.
1613 GlobalDeclID AnonNamespace = 0;
1614 if (Redecl.getFirstID() == ThisDeclID) {
1615 AnonNamespace = readDeclID();
1616 } else {
1617 // Link this namespace back to the first declaration, which has already
1618 // been deserialized.
1619 D->AnonOrFirstNamespaceAndInline.setPointer(D->getFirstDecl());
1620 }
1621
1622 mergeRedeclarable(D, Redecl);
1623
1624 if (AnonNamespace) {
1625 // Each module has its own anonymous namespace, which is disjoint from
1626 // any other module's anonymous namespaces, so don't attach the anonymous
1627 // namespace at all.
1628 auto *Anon = cast<NamespaceDecl>(Reader.GetDecl(AnonNamespace));
1629 if (!Record.isModule())
1630 D->setAnonymousNamespace(Anon);
1631 }
1632}
1633
1634void ASTDeclReader::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
1635 RedeclarableResult Redecl = VisitRedeclarable(D);
1636 VisitNamedDecl(D);
1637 D->NamespaceLoc = readSourceLocation();
1638 D->IdentLoc = readSourceLocation();
1639 D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1640 D->Namespace = readDeclAs<NamedDecl>();
1641 mergeRedeclarable(D, Redecl);
1642}
1643
1644void ASTDeclReader::VisitUsingDecl(UsingDecl *D) {
1645 VisitNamedDecl(D);
1646 D->setUsingLoc(readSourceLocation());
1647 D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1648 D->DNLoc = Record.readDeclarationNameLoc(D->getDeclName());
1649 D->FirstUsingShadow.setPointer(readDeclAs<UsingShadowDecl>());
1650 D->setTypename(Record.readInt());
1651 if (auto *Pattern = readDeclAs<NamedDecl>())
1652 Reader.getContext().setInstantiatedFromUsingDecl(D, Pattern);
1653 mergeMergeable(D);
1654}
1655
1656void ASTDeclReader::VisitUsingEnumDecl(UsingEnumDecl *D) {
1657 VisitNamedDecl(D);
1658 D->setUsingLoc(readSourceLocation());
1659 D->setEnumLoc(readSourceLocation());
1660 D->Enum = readDeclAs<EnumDecl>();
1661 D->FirstUsingShadow.setPointer(readDeclAs<UsingShadowDecl>());
1662 if (auto *Pattern = readDeclAs<UsingEnumDecl>())
1663 Reader.getContext().setInstantiatedFromUsingEnumDecl(D, Pattern);
1664 mergeMergeable(D);
1665}
1666
1667void ASTDeclReader::VisitUsingPackDecl(UsingPackDecl *D) {
1668 VisitNamedDecl(D);
1669 D->InstantiatedFrom = readDeclAs<NamedDecl>();
1670 auto **Expansions = D->getTrailingObjects<NamedDecl *>();
1671 for (unsigned I = 0; I != D->NumExpansions; ++I)
1672 Expansions[I] = readDeclAs<NamedDecl>();
1673 mergeMergeable(D);
1674}
1675
1676void ASTDeclReader::VisitUsingShadowDecl(UsingShadowDecl *D) {
1677 RedeclarableResult Redecl = VisitRedeclarable(D);
1678 VisitNamedDecl(D);
1679 D->Underlying = readDeclAs<NamedDecl>();
1680 D->IdentifierNamespace = Record.readInt();
1681 D->UsingOrNextShadow = readDeclAs<NamedDecl>();
1682 auto *Pattern = readDeclAs<UsingShadowDecl>();
1683 if (Pattern)
1684 Reader.getContext().setInstantiatedFromUsingShadowDecl(D, Pattern);
1685 mergeRedeclarable(D, Redecl);
1686}
1687
1688void ASTDeclReader::VisitConstructorUsingShadowDecl(
1689 ConstructorUsingShadowDecl *D) {
1690 VisitUsingShadowDecl(D);
1691 D->NominatedBaseClassShadowDecl = readDeclAs<ConstructorUsingShadowDecl>();
1692 D->ConstructedBaseClassShadowDecl = readDeclAs<ConstructorUsingShadowDecl>();
1693 D->IsVirtual = Record.readInt();
1694}
1695
1696void ASTDeclReader::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
1697 VisitNamedDecl(D);
1698 D->UsingLoc = readSourceLocation();
1699 D->NamespaceLoc = readSourceLocation();
1700 D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1701 D->NominatedNamespace = readDeclAs<NamedDecl>();
1702 D->CommonAncestor = readDeclAs<DeclContext>();
1703}
1704
1705void ASTDeclReader::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
1706 VisitValueDecl(D);
1707 D->setUsingLoc(readSourceLocation());
1708 D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1709 D->DNLoc = Record.readDeclarationNameLoc(D->getDeclName());
1710 D->EllipsisLoc = readSourceLocation();
1711 mergeMergeable(D);
1712}
1713
1714void ASTDeclReader::VisitUnresolvedUsingTypenameDecl(
1715 UnresolvedUsingTypenameDecl *D) {
1716 VisitTypeDecl(D);
1717 D->TypenameLocation = readSourceLocation();
1718 D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1719 D->EllipsisLoc = readSourceLocation();
1720 mergeMergeable(D);
1721}
1722
1723void ASTDeclReader::VisitUnresolvedUsingIfExistsDecl(
1724 UnresolvedUsingIfExistsDecl *D) {
1725 VisitNamedDecl(D);
1726}
1727
1728void ASTDeclReader::ReadCXXDefinitionData(
1729 struct CXXRecordDecl::DefinitionData &Data, const CXXRecordDecl *D) {
1730 #define FIELD(Name, Width, Merge) \
1731 Data.Name = Record.readInt();
1732 #include "clang/AST/CXXRecordDeclDefinitionBits.def"
1733
1734 // Note: the caller has deserialized the IsLambda bit already.
1735 Data.ODRHash = Record.readInt();
1736 Data.HasODRHash = true;
1737
1738 if (Record.readInt()) {
1739 Reader.DefinitionSource[D] =
1740 Loc.F->Kind == ModuleKind::MK_MainFile ||
1741 Reader.getContext().getLangOpts().BuildingPCHWithObjectFile;
1742 }
1743
1744 Data.NumBases = Record.readInt();
1745 if (Data.NumBases)
1746 Data.Bases = ReadGlobalOffset();
1747 Data.NumVBases = Record.readInt();
1748 if (Data.NumVBases)
1749 Data.VBases = ReadGlobalOffset();
1750
1751 Record.readUnresolvedSet(Data.Conversions);
1752 Data.ComputedVisibleConversions = Record.readInt();
1753 if (Data.ComputedVisibleConversions)
1754 Record.readUnresolvedSet(Data.VisibleConversions);
1755 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 1755, __extension__ __PRETTY_FUNCTION__))
;
1756 Data.FirstFriend = readDeclID();
1757
1758 if (Data.IsLambda) {
1759 using Capture = LambdaCapture;
1760
1761 auto &Lambda = static_cast<CXXRecordDecl::LambdaDefinitionData &>(Data);
1762 Lambda.Dependent = Record.readInt();
1763 Lambda.IsGenericLambda = Record.readInt();
1764 Lambda.CaptureDefault = Record.readInt();
1765 Lambda.NumCaptures = Record.readInt();
1766 Lambda.NumExplicitCaptures = Record.readInt();
1767 Lambda.HasKnownInternalLinkage = Record.readInt();
1768 Lambda.ManglingNumber = Record.readInt();
1769 D->setDeviceLambdaManglingNumber(Record.readInt());
1770 Lambda.ContextDecl = readDeclID();
1771 Lambda.Captures = (Capture *)Reader.getContext().Allocate(
1772 sizeof(Capture) * Lambda.NumCaptures);
1773 Capture *ToCapture = Lambda.Captures;
1774 Lambda.MethodTyInfo = readTypeSourceInfo();
1775 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
1776 SourceLocation Loc = readSourceLocation();
1777 bool IsImplicit = Record.readInt();
1778 auto Kind = static_cast<LambdaCaptureKind>(Record.readInt());
1779 switch (Kind) {
1780 case LCK_StarThis:
1781 case LCK_This:
1782 case LCK_VLAType:
1783 *ToCapture++ = Capture(Loc, IsImplicit, Kind, nullptr,SourceLocation());
1784 break;
1785 case LCK_ByCopy:
1786 case LCK_ByRef:
1787 auto *Var = readDeclAs<VarDecl>();
1788 SourceLocation EllipsisLoc = readSourceLocation();
1789 *ToCapture++ = Capture(Loc, IsImplicit, Kind, Var, EllipsisLoc);
1790 break;
1791 }
1792 }
1793 }
1794}
1795
1796void ASTDeclReader::MergeDefinitionData(
1797 CXXRecordDecl *D, struct CXXRecordDecl::DefinitionData &&MergeDD) {
1798 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 1799, __extension__ __PRETTY_FUNCTION__))
1799 "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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 1799, __extension__ __PRETTY_FUNCTION__))
;
1800 auto &DD = *D->DefinitionData;
1801
1802 if (DD.Definition != MergeDD.Definition) {
1803 // Track that we merged the definitions.
1804 Reader.MergedDeclContexts.insert(std::make_pair(MergeDD.Definition,
1805 DD.Definition));
1806 Reader.PendingDefinitions.erase(MergeDD.Definition);
1807 MergeDD.Definition->setCompleteDefinition(false);
1808 Reader.mergeDefinitionVisibility(DD.Definition, MergeDD.Definition);
1809 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 1810, __extension__ __PRETTY_FUNCTION__))
1810 "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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 1810, __extension__ __PRETTY_FUNCTION__))
;
1811 }
1812
1813 auto PFDI = Reader.PendingFakeDefinitionData.find(&DD);
1814 if (PFDI != Reader.PendingFakeDefinitionData.end() &&
1815 PFDI->second == ASTReader::PendingFakeDefinitionKind::Fake) {
1816 // We faked up this definition data because we found a class for which we'd
1817 // not yet loaded the definition. Replace it with the real thing now.
1818 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 1818, __extension__ __PRETTY_FUNCTION__))
;
1819 PFDI->second = ASTReader::PendingFakeDefinitionKind::FakeLoaded;
1820
1821 // Don't change which declaration is the definition; that is required
1822 // to be invariant once we select it.
1823 auto *Def = DD.Definition;
1824 DD = std::move(MergeDD);
1825 DD.Definition = Def;
1826 return;
1827 }
1828
1829 bool DetectedOdrViolation = false;
1830
1831 #define FIELD(Name, Width, Merge) Merge(Name)
1832 #define MERGE_OR(Field) DD.Field |= MergeDD.Field;
1833 #define NO_MERGE(Field) \
1834 DetectedOdrViolation |= DD.Field != MergeDD.Field; \
1835 MERGE_OR(Field)
1836 #include "clang/AST/CXXRecordDeclDefinitionBits.def"
1837 NO_MERGE(IsLambda)
1838 #undef NO_MERGE
1839 #undef MERGE_OR
1840
1841 if (DD.NumBases != MergeDD.NumBases || DD.NumVBases != MergeDD.NumVBases)
1842 DetectedOdrViolation = true;
1843 // FIXME: Issue a diagnostic if the base classes don't match when we come
1844 // to lazily load them.
1845
1846 // FIXME: Issue a diagnostic if the list of conversion functions doesn't
1847 // match when we come to lazily load them.
1848 if (MergeDD.ComputedVisibleConversions && !DD.ComputedVisibleConversions) {
1849 DD.VisibleConversions = std::move(MergeDD.VisibleConversions);
1850 DD.ComputedVisibleConversions = true;
1851 }
1852
1853 // FIXME: Issue a diagnostic if FirstFriend doesn't match when we come to
1854 // lazily load it.
1855
1856 if (DD.IsLambda) {
1857 // FIXME: ODR-checking for merging lambdas (this happens, for instance,
1858 // when they occur within the body of a function template specialization).
1859 }
1860
1861 if (D->getODRHash() != MergeDD.ODRHash) {
1862 DetectedOdrViolation = true;
1863 }
1864
1865 if (DetectedOdrViolation)
1866 Reader.PendingOdrMergeFailures[DD.Definition].push_back(
1867 {MergeDD.Definition, &MergeDD});
1868}
1869
1870void ASTDeclReader::ReadCXXRecordDefinition(CXXRecordDecl *D, bool Update) {
1871 struct CXXRecordDecl::DefinitionData *DD;
1872 ASTContext &C = Reader.getContext();
1873
1874 // Determine whether this is a lambda closure type, so that we can
1875 // allocate the appropriate DefinitionData structure.
1876 bool IsLambda = Record.readInt();
1877 if (IsLambda)
1878 DD = new (C) CXXRecordDecl::LambdaDefinitionData(D, nullptr, false, false,
1879 LCD_None);
1880 else
1881 DD = new (C) struct CXXRecordDecl::DefinitionData(D);
1882
1883 CXXRecordDecl *Canon = D->getCanonicalDecl();
1884 // Set decl definition data before reading it, so that during deserialization
1885 // when we read CXXRecordDecl, it already has definition data and we don't
1886 // set fake one.
1887 if (!Canon->DefinitionData)
1888 Canon->DefinitionData = DD;
1889 D->DefinitionData = Canon->DefinitionData;
1890 ReadCXXDefinitionData(*DD, D);
1891
1892 // We might already have a different definition for this record. This can
1893 // happen either because we're reading an update record, or because we've
1894 // already done some merging. Either way, just merge into it.
1895 if (Canon->DefinitionData != DD) {
1896 MergeDefinitionData(Canon, std::move(*DD));
1897 return;
1898 }
1899
1900 // Mark this declaration as being a definition.
1901 D->setCompleteDefinition(true);
1902
1903 // If this is not the first declaration or is an update record, we can have
1904 // other redeclarations already. Make a note that we need to propagate the
1905 // DefinitionData pointer onto them.
1906 if (Update || Canon != D)
1907 Reader.PendingDefinitions.insert(D);
1908}
1909
1910ASTDeclReader::RedeclarableResult
1911ASTDeclReader::VisitCXXRecordDeclImpl(CXXRecordDecl *D) {
1912 RedeclarableResult Redecl = VisitRecordDeclImpl(D);
1913
1914 ASTContext &C = Reader.getContext();
1915
1916 enum CXXRecKind {
1917 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization
1918 };
1919 switch ((CXXRecKind)Record.readInt()) {
1920 case CXXRecNotTemplate:
1921 // Merged when we merge the folding set entry in the primary template.
1922 if (!isa<ClassTemplateSpecializationDecl>(D))
1923 mergeRedeclarable(D, Redecl);
1924 break;
1925 case CXXRecTemplate: {
1926 // Merged when we merge the template.
1927 auto *Template = readDeclAs<ClassTemplateDecl>();
1928 D->TemplateOrInstantiation = Template;
1929 if (!Template->getTemplatedDecl()) {
1930 // We've not actually loaded the ClassTemplateDecl yet, because we're
1931 // currently being loaded as its pattern. Rely on it to set up our
1932 // TypeForDecl (see VisitClassTemplateDecl).
1933 //
1934 // Beware: we do not yet know our canonical declaration, and may still
1935 // get merged once the surrounding class template has got off the ground.
1936 DeferredTypeID = 0;
1937 }
1938 break;
1939 }
1940 case CXXRecMemberSpecialization: {
1941 auto *RD = readDeclAs<CXXRecordDecl>();
1942 auto TSK = (TemplateSpecializationKind)Record.readInt();
1943 SourceLocation POI = readSourceLocation();
1944 MemberSpecializationInfo *MSI = new (C) MemberSpecializationInfo(RD, TSK);
1945 MSI->setPointOfInstantiation(POI);
1946 D->TemplateOrInstantiation = MSI;
1947 mergeRedeclarable(D, Redecl);
1948 break;
1949 }
1950 }
1951
1952 bool WasDefinition = Record.readInt();
1953 if (WasDefinition)
1954 ReadCXXRecordDefinition(D, /*Update*/false);
1955 else
1956 // Propagate DefinitionData pointer from the canonical declaration.
1957 D->DefinitionData = D->getCanonicalDecl()->DefinitionData;
1958
1959 // Lazily load the key function to avoid deserializing every method so we can
1960 // compute it.
1961 if (WasDefinition) {
1962 DeclID KeyFn = readDeclID();
1963 if (KeyFn && D->isCompleteDefinition())
1964 // FIXME: This is wrong for the ARM ABI, where some other module may have
1965 // made this function no longer be a key function. We need an update
1966 // record or similar for that case.
1967 C.KeyFunctions[D] = KeyFn;
1968 }
1969
1970 return Redecl;
1971}
1972
1973void ASTDeclReader::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) {
1974 D->setExplicitSpecifier(Record.readExplicitSpec());
1975 D->Ctor = readDeclAs<CXXConstructorDecl>();
1976 VisitFunctionDecl(D);
1977 D->setIsCopyDeductionCandidate(Record.readInt());
1978}
1979
1980void ASTDeclReader::VisitCXXMethodDecl(CXXMethodDecl *D) {
1981 VisitFunctionDecl(D);
1982
1983 unsigned NumOverridenMethods = Record.readInt();
1984 if (D->isCanonicalDecl()) {
1985 while (NumOverridenMethods--) {
1986 // Avoid invariant checking of CXXMethodDecl::addOverriddenMethod,
1987 // MD may be initializing.
1988 if (auto *MD = readDeclAs<CXXMethodDecl>())
1989 Reader.getContext().addOverriddenMethod(D, MD->getCanonicalDecl());
1990 }
1991 } else {
1992 // We don't care about which declarations this used to override; we get
1993 // the relevant information from the canonical declaration.
1994 Record.skipInts(NumOverridenMethods);
1995 }
1996}
1997
1998void ASTDeclReader::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
1999 // We need the inherited constructor information to merge the declaration,
2000 // so we have to read it before we call VisitCXXMethodDecl.
2001 D->setExplicitSpecifier(Record.readExplicitSpec());
2002 if (D->isInheritingConstructor()) {
2003 auto *Shadow = readDeclAs<ConstructorUsingShadowDecl>();
2004 auto *Ctor = readDeclAs<CXXConstructorDecl>();
2005 *D->getTrailingObjects<InheritedConstructor>() =
2006 InheritedConstructor(Shadow, Ctor);
2007 }
2008
2009 VisitCXXMethodDecl(D);
2010}
2011
2012void ASTDeclReader::VisitCXXDestructorDecl(CXXDestructorDecl *D) {
2013 VisitCXXMethodDecl(D);
2014
2015 if (auto *OperatorDelete = readDeclAs<FunctionDecl>()) {
2016 CXXDestructorDecl *Canon = D->getCanonicalDecl();
2017 auto *ThisArg = Record.readExpr();
2018 // FIXME: Check consistency if we have an old and new operator delete.
2019 if (!Canon->OperatorDelete) {
2020 Canon->OperatorDelete = OperatorDelete;
2021 Canon->OperatorDeleteThisArg = ThisArg;
2022 }
2023 }
2024}
2025
2026void ASTDeclReader::VisitCXXConversionDecl(CXXConversionDecl *D) {
2027 D->setExplicitSpecifier(Record.readExplicitSpec());
2028 VisitCXXMethodDecl(D);
2029}
2030
2031void ASTDeclReader::VisitImportDecl(ImportDecl *D) {
2032 VisitDecl(D);
2033 D->ImportedModule = readModule();
2034 D->setImportComplete(Record.readInt());
2035 auto *StoredLocs = D->getTrailingObjects<SourceLocation>();
2036 for (unsigned I = 0, N = Record.back(); I != N; ++I)
2037 StoredLocs[I] = readSourceLocation();
2038 Record.skipInts(1); // The number of stored source locations.
2039}
2040
2041void ASTDeclReader::VisitAccessSpecDecl(AccessSpecDecl *D) {
2042 VisitDecl(D);
2043 D->setColonLoc(readSourceLocation());
2044}
2045
2046void ASTDeclReader::VisitFriendDecl(FriendDecl *D) {
2047 VisitDecl(D);
2048 if (Record.readInt()) // hasFriendDecl
2049 D->Friend = readDeclAs<NamedDecl>();
2050 else
2051 D->Friend = readTypeSourceInfo();
2052 for (unsigned i = 0; i != D->NumTPLists; ++i)
2053 D->getTrailingObjects<TemplateParameterList *>()[i] =
2054 Record.readTemplateParameterList();
2055 D->NextFriend = readDeclID();
2056 D->UnsupportedFriend = (Record.readInt() != 0);
2057 D->FriendLoc = readSourceLocation();
2058}
2059
2060void ASTDeclReader::VisitFriendTemplateDecl(FriendTemplateDecl *D) {
2061 VisitDecl(D);
2062 unsigned NumParams = Record.readInt();
2063 D->NumParams = NumParams;
2064 D->Params = new TemplateParameterList*[NumParams];
2065 for (unsigned i = 0; i != NumParams; ++i)
2066 D->Params[i] = Record.readTemplateParameterList();
2067 if (Record.readInt()) // HasFriendDecl
2068 D->Friend = readDeclAs<NamedDecl>();
2069 else
2070 D->Friend = readTypeSourceInfo();
2071 D->FriendLoc = readSourceLocation();
2072}
2073
2074DeclID ASTDeclReader::VisitTemplateDecl(TemplateDecl *D) {
2075 VisitNamedDecl(D);
2076
2077 DeclID PatternID = readDeclID();
2078 auto *TemplatedDecl = cast_or_null<NamedDecl>(Reader.GetDecl(PatternID));
2079 TemplateParameterList *TemplateParams = Record.readTemplateParameterList();
2080 D->init(TemplatedDecl, TemplateParams);
2081
2082 return PatternID;
2083}
2084
2085void ASTDeclReader::VisitConceptDecl(ConceptDecl *D) {
2086 VisitTemplateDecl(D);
2087 D->ConstraintExpr = Record.readExpr();
2088 mergeMergeable(D);
2089}
2090
2091void ASTDeclReader::VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D) {
2092}
2093
2094ASTDeclReader::RedeclarableResult
2095ASTDeclReader::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) {
2096 RedeclarableResult Redecl = VisitRedeclarable(D);
2097
2098 // Make sure we've allocated the Common pointer first. We do this before
2099 // VisitTemplateDecl so that getCommonPtr() can be used during initialization.
2100 RedeclarableTemplateDecl *CanonD = D->getCanonicalDecl();
2101 if (!CanonD->Common) {
2102 CanonD->Common = CanonD->newCommon(Reader.getContext());
2103 Reader.PendingDefinitions.insert(CanonD);
2104 }
2105 D->Common = CanonD->Common;
2106
2107 // If this is the first declaration of the template, fill in the information
2108 // for the 'common' pointer.
2109 if (ThisDeclID == Redecl.getFirstID()) {
2110 if (auto *RTD = readDeclAs<RedeclarableTemplateDecl>()) {
2111 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2112, __extension__ __PRETTY_FUNCTION__))
2112 "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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2112, __extension__ __PRETTY_FUNCTION__))
;
2113 D->setInstantiatedFromMemberTemplate(RTD);
2114 if (Record.readInt())
2115 D->setMemberSpecialization();
2116 }
2117 }
2118
2119 DeclID PatternID = VisitTemplateDecl(D);
2120 D->IdentifierNamespace = Record.readInt();
2121
2122 mergeRedeclarable(D, Redecl, PatternID);
2123
2124 // If we merged the template with a prior declaration chain, merge the common
2125 // pointer.
2126 // FIXME: Actually merge here, don't just overwrite.
2127 D->Common = D->getCanonicalDecl()->Common;
2128
2129 return Redecl;
2130}
2131
2132void ASTDeclReader::VisitClassTemplateDecl(ClassTemplateDecl *D) {
2133 RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
2134
2135 if (ThisDeclID == Redecl.getFirstID()) {
2136 // This ClassTemplateDecl owns a CommonPtr; read it to keep track of all of
2137 // the specializations.
2138 SmallVector<serialization::DeclID, 32> SpecIDs;
2139 readDeclIDList(SpecIDs);
2140 ASTDeclReader::AddLazySpecializations(D, SpecIDs);
2141 }
2142
2143 if (D->getTemplatedDecl()->TemplateOrInstantiation) {
2144 // We were loaded before our templated declaration was. We've not set up
2145 // its corresponding type yet (see VisitCXXRecordDeclImpl), so reconstruct
2146 // it now.
2147 Reader.getContext().getInjectedClassNameType(
2148 D->getTemplatedDecl(), D->getInjectedClassNameSpecialization());
2149 }
2150}
2151
2152void ASTDeclReader::VisitBuiltinTemplateDecl(BuiltinTemplateDecl *D) {
2153 llvm_unreachable("BuiltinTemplates are not serialized")::llvm::llvm_unreachable_internal("BuiltinTemplates are not serialized"
, "/build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2153)
;
2154}
2155
2156/// TODO: Unify with ClassTemplateDecl version?
2157/// May require unifying ClassTemplateDecl and
2158/// VarTemplateDecl beyond TemplateDecl...
2159void ASTDeclReader::VisitVarTemplateDecl(VarTemplateDecl *D) {
2160 RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
2161
2162 if (ThisDeclID == Redecl.getFirstID()) {
2163 // This VarTemplateDecl owns a CommonPtr; read it to keep track of all of
2164 // the specializations.
2165 SmallVector<serialization::DeclID, 32> SpecIDs;
2166 readDeclIDList(SpecIDs);
2167 ASTDeclReader::AddLazySpecializations(D, SpecIDs);
2168 }
2169}
2170
2171ASTDeclReader::RedeclarableResult
2172ASTDeclReader::VisitClassTemplateSpecializationDeclImpl(
2173 ClassTemplateSpecializationDecl *D) {
2174 RedeclarableResult Redecl = VisitCXXRecordDeclImpl(D);
2175
2176 ASTContext &C = Reader.getContext();
2177 if (Decl *InstD = readDecl()) {
2178 if (auto *CTD = dyn_cast<ClassTemplateDecl>(InstD)) {
2179 D->SpecializedTemplate = CTD;
2180 } else {
2181 SmallVector<TemplateArgument, 8> TemplArgs;
2182 Record.readTemplateArgumentList(TemplArgs);
2183 TemplateArgumentList *ArgList
2184 = TemplateArgumentList::CreateCopy(C, TemplArgs);
2185 auto *PS =
2186 new (C) ClassTemplateSpecializationDecl::
2187 SpecializedPartialSpecialization();
2188 PS->PartialSpecialization
2189 = cast<ClassTemplatePartialSpecializationDecl>(InstD);
2190 PS->TemplateArgs = ArgList;
2191 D->SpecializedTemplate = PS;
2192 }
2193 }
2194
2195 SmallVector<TemplateArgument, 8> TemplArgs;
2196 Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
2197 D->TemplateArgs = TemplateArgumentList::CreateCopy(C, TemplArgs);
2198 D->PointOfInstantiation = readSourceLocation();
2199 D->SpecializationKind = (TemplateSpecializationKind)Record.readInt();
2200
2201 bool writtenAsCanonicalDecl = Record.readInt();
2202 if (writtenAsCanonicalDecl) {
2203 auto *CanonPattern = readDeclAs<ClassTemplateDecl>();
2204 if (D->isCanonicalDecl()) { // It's kept in the folding set.
2205 // Set this as, or find, the canonical declaration for this specialization
2206 ClassTemplateSpecializationDecl *CanonSpec;
2207 if (auto *Partial = dyn_cast<ClassTemplatePartialSpecializationDecl>(D)) {
2208 CanonSpec = CanonPattern->getCommonPtr()->PartialSpecializations
2209 .GetOrInsertNode(Partial);
2210 } else {
2211 CanonSpec =
2212 CanonPattern->getCommonPtr()->Specializations.GetOrInsertNode(D);
2213 }
2214 // If there was already a canonical specialization, merge into it.
2215 if (CanonSpec != D) {
2216 mergeRedeclarable<TagDecl>(D, CanonSpec, Redecl);
2217
2218 // This declaration might be a definition. Merge with any existing
2219 // definition.
2220 if (auto *DDD = D->DefinitionData) {
2221 if (CanonSpec->DefinitionData)
2222 MergeDefinitionData(CanonSpec, std::move(*DDD));
2223 else
2224 CanonSpec->DefinitionData = D->DefinitionData;
2225 }
2226 D->DefinitionData = CanonSpec->DefinitionData;
2227 }
2228 }
2229 }
2230
2231 // Explicit info.
2232 if (TypeSourceInfo *TyInfo = readTypeSourceInfo()) {
2233 auto *ExplicitInfo =
2234 new (C) ClassTemplateSpecializationDecl::ExplicitSpecializationInfo;
2235 ExplicitInfo->TypeAsWritten = TyInfo;
2236 ExplicitInfo->ExternLoc = readSourceLocation();
2237 ExplicitInfo->TemplateKeywordLoc = readSourceLocation();
2238 D->ExplicitInfo = ExplicitInfo;
2239 }
2240
2241 return Redecl;
2242}
2243
2244void ASTDeclReader::VisitClassTemplatePartialSpecializationDecl(
2245 ClassTemplatePartialSpecializationDecl *D) {
2246 // We need to read the template params first because redeclarable is going to
2247 // need them for profiling
2248 TemplateParameterList *Params = Record.readTemplateParameterList();
2249 D->TemplateParams = Params;
2250 D->ArgsAsWritten = Record.readASTTemplateArgumentListInfo();
2251
2252 RedeclarableResult Redecl = VisitClassTemplateSpecializationDeclImpl(D);
2253
2254 // These are read/set from/to the first declaration.
2255 if (ThisDeclID == Redecl.getFirstID()) {
2256 D->InstantiatedFromMember.setPointer(
2257 readDeclAs<ClassTemplatePartialSpecializationDecl>());
2258 D->InstantiatedFromMember.setInt(Record.readInt());
2259 }
2260}
2261
2262void ASTDeclReader::VisitClassScopeFunctionSpecializationDecl(
2263 ClassScopeFunctionSpecializationDecl *D) {
2264 VisitDecl(D);
2265 D->Specialization = readDeclAs<CXXMethodDecl>();
2266 if (Record.readInt())
2267 D->TemplateArgs = Record.readASTTemplateArgumentListInfo();
2268}
2269
2270void ASTDeclReader::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) {
2271 RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
2272
2273 if (ThisDeclID == Redecl.getFirstID()) {
2274 // This FunctionTemplateDecl owns a CommonPtr; read it.
2275 SmallVector<serialization::DeclID, 32> SpecIDs;
2276 readDeclIDList(SpecIDs);
2277 ASTDeclReader::AddLazySpecializations(D, SpecIDs);
2278 }
2279}
2280
2281/// TODO: Unify with ClassTemplateSpecializationDecl version?
2282/// May require unifying ClassTemplate(Partial)SpecializationDecl and
2283/// VarTemplate(Partial)SpecializationDecl with a new data
2284/// structure Template(Partial)SpecializationDecl, and
2285/// using Template(Partial)SpecializationDecl as input type.
2286ASTDeclReader::RedeclarableResult
2287ASTDeclReader::VisitVarTemplateSpecializationDeclImpl(
2288 VarTemplateSpecializationDecl *D) {
2289 RedeclarableResult Redecl = VisitVarDeclImpl(D);
2290
2291 ASTContext &C = Reader.getContext();
2292 if (Decl *InstD = readDecl()) {
2293 if (auto *VTD = dyn_cast<VarTemplateDecl>(InstD)) {
2294 D->SpecializedTemplate = VTD;
2295 } else {
2296 SmallVector<TemplateArgument, 8> TemplArgs;
2297 Record.readTemplateArgumentList(TemplArgs);
2298 TemplateArgumentList *ArgList = TemplateArgumentList::CreateCopy(
2299 C, TemplArgs);
2300 auto *PS =
2301 new (C)
2302 VarTemplateSpecializationDecl::SpecializedPartialSpecialization();
2303 PS->PartialSpecialization =
2304 cast<VarTemplatePartialSpecializationDecl>(InstD);
2305 PS->TemplateArgs = ArgList;
2306 D->SpecializedTemplate = PS;
2307 }
2308 }
2309
2310 // Explicit info.
2311 if (TypeSourceInfo *TyInfo = readTypeSourceInfo()) {
2312 auto *ExplicitInfo =
2313 new (C) VarTemplateSpecializationDecl::ExplicitSpecializationInfo;
2314 ExplicitInfo->TypeAsWritten = TyInfo;
2315 ExplicitInfo->ExternLoc = readSourceLocation();
2316 ExplicitInfo->TemplateKeywordLoc = readSourceLocation();
2317 D->ExplicitInfo = ExplicitInfo;
2318 }
2319
2320 SmallVector<TemplateArgument, 8> TemplArgs;
2321 Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
2322 D->TemplateArgs = TemplateArgumentList::CreateCopy(C, TemplArgs);
2323 D->PointOfInstantiation = readSourceLocation();
2324 D->SpecializationKind = (TemplateSpecializationKind)Record.readInt();
2325 D->IsCompleteDefinition = Record.readInt();
2326
2327 bool writtenAsCanonicalDecl = Record.readInt();
2328 if (writtenAsCanonicalDecl) {
2329 auto *CanonPattern = readDeclAs<VarTemplateDecl>();
2330 if (D->isCanonicalDecl()) { // It's kept in the folding set.
2331 // FIXME: If it's already present, merge it.
2332 if (auto *Partial = dyn_cast<VarTemplatePartialSpecializationDecl>(D)) {
2333 CanonPattern->getCommonPtr()->PartialSpecializations
2334 .GetOrInsertNode(Partial);
2335 } else {
2336 CanonPattern->getCommonPtr()->Specializations.GetOrInsertNode(D);
2337 }
2338 }
2339 }
2340
2341 return Redecl;
2342}
2343
2344/// TODO: Unify with ClassTemplatePartialSpecializationDecl version?
2345/// May require unifying ClassTemplate(Partial)SpecializationDecl and
2346/// VarTemplate(Partial)SpecializationDecl with a new data
2347/// structure Template(Partial)SpecializationDecl, and
2348/// using Template(Partial)SpecializationDecl as input type.
2349void ASTDeclReader::VisitVarTemplatePartialSpecializationDecl(
2350 VarTemplatePartialSpecializationDecl *D) {
2351 TemplateParameterList *Params = Record.readTemplateParameterList();
2352 D->TemplateParams = Params;
2353 D->ArgsAsWritten = Record.readASTTemplateArgumentListInfo();
2354
2355 RedeclarableResult Redecl = VisitVarTemplateSpecializationDeclImpl(D);
2356
2357 // These are read/set from/to the first declaration.
2358 if (ThisDeclID == Redecl.getFirstID()) {
2359 D->InstantiatedFromMember.setPointer(
2360 readDeclAs<VarTemplatePartialSpecializationDecl>());
2361 D->InstantiatedFromMember.setInt(Record.readInt());
2362 }
2363}
2364
2365void ASTDeclReader::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
2366 VisitTypeDecl(D);
2367
2368 D->setDeclaredWithTypename(Record.readInt());
2369
2370 if (Record.readBool()) {
2371 NestedNameSpecifierLoc NNS = Record.readNestedNameSpecifierLoc();
2372 DeclarationNameInfo DN = Record.readDeclarationNameInfo();
2373 ConceptDecl *NamedConcept = Record.readDeclAs<ConceptDecl>();
2374 const ASTTemplateArgumentListInfo *ArgsAsWritten = nullptr;
2375 if (Record.readBool())
2376 ArgsAsWritten = Record.readASTTemplateArgumentListInfo();
2377 Expr *ImmediatelyDeclaredConstraint = Record.readExpr();
2378 D->setTypeConstraint(NNS, DN, /*FoundDecl=*/nullptr, NamedConcept,
2379 ArgsAsWritten, ImmediatelyDeclaredConstraint);
2380 if ((D->ExpandedParameterPack = Record.readInt()))
2381 D->NumExpanded = Record.readInt();
2382 }
2383
2384 if (Record.readInt())
2385 D->setDefaultArgument(readTypeSourceInfo());
2386}
2387
2388void ASTDeclReader::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
2389 VisitDeclaratorDecl(D);
2390 // TemplateParmPosition.
2391 D->setDepth(Record.readInt());
2392 D->setPosition(Record.readInt());
2393 if (D->hasPlaceholderTypeConstraint())
2394 D->setPlaceholderTypeConstraint(Record.readExpr());
2395 if (D->isExpandedParameterPack()) {
2396 auto TypesAndInfos =
2397 D->getTrailingObjects<std::pair<QualType, TypeSourceInfo *>>();
2398 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) {
2399 new (&TypesAndInfos[I].first) QualType(Record.readType());
2400 TypesAndInfos[I].second = readTypeSourceInfo();
2401 }
2402 } else {
2403 // Rest of NonTypeTemplateParmDecl.
2404 D->ParameterPack = Record.readInt();
2405 if (Record.readInt())
2406 D->setDefaultArgument(Record.readExpr());
2407 }
2408}
2409
2410void ASTDeclReader::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
2411 VisitTemplateDecl(D);
2412 // TemplateParmPosition.
2413 D->setDepth(Record.readInt());
2414 D->setPosition(Record.readInt());
2415 if (D->isExpandedParameterPack()) {
2416 auto **Data = D->getTrailingObjects<TemplateParameterList *>();
2417 for (unsigned I = 0, N = D->getNumExpansionTemplateParameters();
2418 I != N; ++I)
2419 Data[I] = Record.readTemplateParameterList();
2420 } else {
2421 // Rest of TemplateTemplateParmDecl.
2422 D->ParameterPack = Record.readInt();
2423 if (Record.readInt())
2424 D->setDefaultArgument(Reader.getContext(),
2425 Record.readTemplateArgumentLoc());
2426 }
2427}
2428
2429void ASTDeclReader::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) {
2430 VisitRedeclarableTemplateDecl(D);
2431}
2432
2433void ASTDeclReader::VisitStaticAssertDecl(StaticAssertDecl *D) {
2434 VisitDecl(D);
2435 D->AssertExprAndFailed.setPointer(Record.readExpr());
2436 D->AssertExprAndFailed.setInt(Record.readInt());
2437 D->Message = cast_or_null<StringLiteral>(Record.readExpr());
2438 D->RParenLoc = readSourceLocation();
2439}
2440
2441void ASTDeclReader::VisitEmptyDecl(EmptyDecl *D) {
2442 VisitDecl(D);
2443}
2444
2445void ASTDeclReader::VisitLifetimeExtendedTemporaryDecl(
2446 LifetimeExtendedTemporaryDecl *D) {
2447 VisitDecl(D);
2448 D->ExtendingDecl = readDeclAs<ValueDecl>();
2449 D->ExprWithTemporary = Record.readStmt();
2450 if (Record.readInt()) {
2451 D->Value = new (D->getASTContext()) APValue(Record.readAPValue());
2452 D->getASTContext().addDestruction(D->Value);
2453 }
2454 D->ManglingNumber = Record.readInt();
2455 mergeMergeable(D);
2456}
2457
2458std::pair<uint64_t, uint64_t>
2459ASTDeclReader::VisitDeclContext(DeclContext *DC) {
2460 uint64_t LexicalOffset = ReadLocalOffset();
2461 uint64_t VisibleOffset = ReadLocalOffset();
2462 return std::make_pair(LexicalOffset, VisibleOffset);
2463}
2464
2465template <typename T>
2466ASTDeclReader::RedeclarableResult
2467ASTDeclReader::VisitRedeclarable(Redeclarable<T> *D) {
2468 DeclID FirstDeclID = readDeclID();
2469 Decl *MergeWith = nullptr;
2470
2471 bool IsKeyDecl = ThisDeclID == FirstDeclID;
2472 bool IsFirstLocalDecl = false;
2473
2474 uint64_t RedeclOffset = 0;
2475
2476 // 0 indicates that this declaration was the only declaration of its entity,
2477 // and is used for space optimization.
2478 if (FirstDeclID == 0) {
2479 FirstDeclID = ThisDeclID;
2480 IsKeyDecl = true;
2481 IsFirstLocalDecl = true;
2482 } else if (unsigned N = Record.readInt()) {
2483 // This declaration was the first local declaration, but may have imported
2484 // other declarations.
2485 IsKeyDecl = N == 1;
2486 IsFirstLocalDecl = true;
2487
2488 // We have some declarations that must be before us in our redeclaration
2489 // chain. Read them now, and remember that we ought to merge with one of
2490 // them.
2491 // FIXME: Provide a known merge target to the second and subsequent such
2492 // declaration.
2493 for (unsigned I = 0; I != N - 1; ++I)
2494 MergeWith = readDecl();
2495
2496 RedeclOffset = ReadLocalOffset();
2497 } else {
2498 // This declaration was not the first local declaration. Read the first
2499 // local declaration now, to trigger the import of other redeclarations.
2500 (void)readDecl();
2501 }
2502
2503 auto *FirstDecl = cast_or_null<T>(Reader.GetDecl(FirstDeclID));
2504 if (FirstDecl != D) {
2505 // We delay loading of the redeclaration chain to avoid deeply nested calls.
2506 // We temporarily set the first (canonical) declaration as the previous one
2507 // which is the one that matters and mark the real previous DeclID to be
2508 // loaded & attached later on.
2509 D->RedeclLink = Redeclarable<T>::PreviousDeclLink(FirstDecl);
2510 D->First = FirstDecl->getCanonicalDecl();
2511 }
2512
2513 auto *DAsT = static_cast<T *>(D);
2514
2515 // Note that we need to load local redeclarations of this decl and build a
2516 // decl chain for them. This must happen *after* we perform the preloading
2517 // above; this ensures that the redeclaration chain is built in the correct
2518 // order.
2519 if (IsFirstLocalDecl)
2520 Reader.PendingDeclChains.push_back(std::make_pair(DAsT, RedeclOffset));
2521
2522 return RedeclarableResult(MergeWith, FirstDeclID, IsKeyDecl);
2523}
2524
2525/// Attempts to merge the given declaration (D) with another declaration
2526/// of the same entity.
2527template<typename T>
2528void ASTDeclReader::mergeRedeclarable(Redeclarable<T> *DBase,
2529 RedeclarableResult &Redecl,
2530 DeclID TemplatePatternID) {
2531 // If modules are not available, there is no reason to perform this merge.
2532 if (!Reader.getContext().getLangOpts().Modules)
2533 return;
2534
2535 // If we're not the canonical declaration, we don't need to merge.
2536 if (!DBase->isFirstDecl())
2537 return;
2538
2539 auto *D = static_cast<T *>(DBase);
2540
2541 if (auto *Existing = Redecl.getKnownMergeTarget())
2542 // We already know of an existing declaration we should merge with.
2543 mergeRedeclarable(D, cast<T>(Existing), Redecl, TemplatePatternID);
2544 else if (FindExistingResult ExistingRes = findExisting(D))
2545 if (T *Existing = ExistingRes)
2546 mergeRedeclarable(D, Existing, Redecl, TemplatePatternID);
2547}
2548
2549/// "Cast" to type T, asserting if we don't have an implicit conversion.
2550/// We use this to put code in a template that will only be valid for certain
2551/// instantiations.
2552template<typename T> static T assert_cast(T t) { return t; }
2553template<typename T> static T assert_cast(...) {
2554 llvm_unreachable("bad assert_cast")::llvm::llvm_unreachable_internal("bad assert_cast", "/build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2554)
;
2555}
2556
2557/// Merge together the pattern declarations from two template
2558/// declarations.
2559void ASTDeclReader::mergeTemplatePattern(RedeclarableTemplateDecl *D,
2560 RedeclarableTemplateDecl *Existing,
2561 DeclID DsID, bool IsKeyDecl) {
2562 auto *DPattern = D->getTemplatedDecl();
2563 auto *ExistingPattern = Existing->getTemplatedDecl();
2564 RedeclarableResult Result(/*MergeWith*/ ExistingPattern,
2565 DPattern->getCanonicalDecl()->getGlobalID(),
2566 IsKeyDecl);
2567
2568 if (auto *DClass = dyn_cast<CXXRecordDecl>(DPattern)) {
2569 // Merge with any existing definition.
2570 // FIXME: This is duplicated in several places. Refactor.
2571 auto *ExistingClass =
2572 cast<CXXRecordDecl>(ExistingPattern)->getCanonicalDecl();
2573 if (auto *DDD = DClass->DefinitionData) {
2574 if (ExistingClass->DefinitionData) {
2575 MergeDefinitionData(ExistingClass, std::move(*DDD));
2576 } else {
2577 ExistingClass->DefinitionData = DClass->DefinitionData;
2578 // We may have skipped this before because we thought that DClass
2579 // was the canonical declaration.
2580 Reader.PendingDefinitions.insert(DClass);
2581 }
2582 }
2583 DClass->DefinitionData = ExistingClass->DefinitionData;
2584
2585 return mergeRedeclarable(DClass, cast<TagDecl>(ExistingPattern),
2586 Result);
2587 }
2588 if (auto *DFunction = dyn_cast<FunctionDecl>(DPattern))
2589 return mergeRedeclarable(DFunction, cast<FunctionDecl>(ExistingPattern),
2590 Result);
2591 if (auto *DVar = dyn_cast<VarDecl>(DPattern))
2592 return mergeRedeclarable(DVar, cast<VarDecl>(ExistingPattern), Result);
2593 if (auto *DAlias = dyn_cast<TypeAliasDecl>(DPattern))
2594 return mergeRedeclarable(DAlias, cast<TypedefNameDecl>(ExistingPattern),
2595 Result);
2596 llvm_unreachable("merged an unknown kind of redeclarable template")::llvm::llvm_unreachable_internal("merged an unknown kind of redeclarable template"
, "/build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2596)
;
2597}
2598
2599/// Attempts to merge the given declaration (D) with another declaration
2600/// of the same entity.
2601template<typename T>
2602void ASTDeclReader::mergeRedeclarable(Redeclarable<T> *DBase, T *Existing,
2603 RedeclarableResult &Redecl,
2604 DeclID TemplatePatternID) {
2605 auto *D = static_cast<T *>(DBase);
2606 T *ExistingCanon = Existing->getCanonicalDecl();
2607 T *DCanon = D->getCanonicalDecl();
2608 if (ExistingCanon != DCanon) {
2609 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2610, __extension__ __PRETTY_FUNCTION__))
2610 "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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2610, __extension__ __PRETTY_FUNCTION__))
;
2611
2612 // Have our redeclaration link point back at the canonical declaration
2613 // of the existing declaration, so that this declaration has the
2614 // appropriate canonical declaration.
2615 D->RedeclLink = Redeclarable<T>::PreviousDeclLink(ExistingCanon);
2616 D->First = ExistingCanon;
2617 ExistingCanon->Used |= D->Used;
2618 D->Used = false;
2619
2620 // When we merge a namespace, update its pointer to the first namespace.
2621 // We cannot have loaded any redeclarations of this declaration yet, so
2622 // there's nothing else that needs to be updated.
2623 if (auto *Namespace = dyn_cast<NamespaceDecl>(D))
2624 Namespace->AnonOrFirstNamespaceAndInline.setPointer(
2625 assert_cast<NamespaceDecl*>(ExistingCanon));
2626
2627 // When we merge a template, merge its pattern.
2628 if (auto *DTemplate = dyn_cast<RedeclarableTemplateDecl>(D))
2629 mergeTemplatePattern(
2630 DTemplate, assert_cast<RedeclarableTemplateDecl*>(ExistingCanon),
2631 TemplatePatternID, Redecl.isKeyDecl());
2632
2633 // If this declaration is a key declaration, make a note of that.
2634 if (Redecl.isKeyDecl())
2635 Reader.KeyDecls[ExistingCanon].push_back(Redecl.getFirstID());
2636 }
2637}
2638
2639/// ODR-like semantics for C/ObjC allow us to merge tag types and a structural
2640/// check in Sema guarantees the types can be merged (see C11 6.2.7/1 or C89
2641/// 6.1.2.6/1). Although most merging is done in Sema, we need to guarantee
2642/// that some types are mergeable during deserialization, otherwise name
2643/// lookup fails. This is the case for EnumConstantDecl.
2644static bool allowODRLikeMergeInC(NamedDecl *ND) {
2645 if (!ND)
2646 return false;
2647 // TODO: implement merge for other necessary decls.
2648 if (isa<EnumConstantDecl>(ND))
2649 return true;
2650 return false;
2651}
2652
2653/// Attempts to merge LifetimeExtendedTemporaryDecl with
2654/// identical class definitions from two different modules.
2655void ASTDeclReader::mergeMergeable(LifetimeExtendedTemporaryDecl *D) {
2656 // If modules are not available, there is no reason to perform this merge.
2657 if (!Reader.getContext().getLangOpts().Modules)
2658 return;
2659
2660 LifetimeExtendedTemporaryDecl *LETDecl = D;
2661
2662 LifetimeExtendedTemporaryDecl *&LookupResult =
2663 Reader.LETemporaryForMerging[std::make_pair(
2664 LETDecl->getExtendingDecl(), LETDecl->getManglingNumber())];
2665 if (LookupResult)
2666 Reader.getContext().setPrimaryMergedDecl(LETDecl,
2667 LookupResult->getCanonicalDecl());
2668 else
2669 LookupResult = LETDecl;
2670}
2671
2672/// Attempts to merge the given declaration (D) with another declaration
2673/// of the same entity, for the case where the entity is not actually
2674/// redeclarable. This happens, for instance, when merging the fields of
2675/// identical class definitions from two different modules.
2676template<typename T>
2677void ASTDeclReader::mergeMergeable(Mergeable<T> *D) {
2678 // If modules are not available, there is no reason to perform this merge.
2679 if (!Reader.getContext().getLangOpts().Modules)
1
Assuming field 'Modules' is not equal to 0
2
Taking false branch
2680 return;
2681
2682 // ODR-based merging is performed in C++ and in some cases (tag types) in C.
2683 // Note that C identically-named things in different translation units are
2684 // not redeclarations, but may still have compatible types, where ODR-like
2685 // semantics may apply.
2686 if (!Reader.getContext().getLangOpts().CPlusPlus &&
3
Assuming field 'CPlusPlus' is not equal to 0
2687 !allowODRLikeMergeInC(dyn_cast<NamedDecl>(static_cast<T*>(D))))
2688 return;
2689
2690 if (FindExistingResult ExistingRes = findExisting(static_cast<T*>(D)))
4
Calling 'ASTDeclReader::findExisting'
2691 if (T *Existing = ExistingRes)
2692 Reader.getContext().setPrimaryMergedDecl(static_cast<T *>(D),
2693 Existing->getCanonicalDecl());
2694}
2695
2696void ASTDeclReader::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) {
2697 Record.readOMPChildren(D->Data);
2698 VisitDecl(D);
2699}
2700
2701void ASTDeclReader::VisitOMPAllocateDecl(OMPAllocateDecl *D) {
2702 Record.readOMPChildren(D->Data);
2703 VisitDecl(D);
2704}
2705
2706void ASTDeclReader::VisitOMPRequiresDecl(OMPRequiresDecl * D) {
2707 Record.readOMPChildren(D->Data);
2708 VisitDecl(D);
2709}
2710
2711void ASTDeclReader::VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D) {
2712 VisitValueDecl(D);
2713 D->setLocation(readSourceLocation());
2714 Expr *In = Record.readExpr();
2715 Expr *Out = Record.readExpr();
2716 D->setCombinerData(In, Out);
2717 Expr *Combiner = Record.readExpr();
2718 D->setCombiner(Combiner);
2719 Expr *Orig = Record.readExpr();
2720 Expr *Priv = Record.readExpr();
2721 D->setInitializerData(Orig, Priv);
2722 Expr *Init = Record.readExpr();
2723 auto IK = static_cast<OMPDeclareReductionDecl::InitKind>(Record.readInt());
2724 D->setInitializer(Init, IK);
2725 D->PrevDeclInScope = readDeclID();
2726}
2727
2728void ASTDeclReader::VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D) {
2729 Record.readOMPChildren(D->Data);
2730 VisitValueDecl(D);
2731 D->VarName = Record.readDeclarationName();
2732 D->PrevDeclInScope = readDeclID();
2733}
2734
2735void ASTDeclReader::VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D) {
2736 VisitVarDecl(D);
2737}
2738
2739//===----------------------------------------------------------------------===//
2740// Attribute Reading
2741//===----------------------------------------------------------------------===//
2742
2743namespace {
2744class AttrReader {
2745 ASTRecordReader &Reader;
2746
2747public:
2748 AttrReader(ASTRecordReader &Reader) : Reader(Reader) {}
2749
2750 uint64_t readInt() {
2751 return Reader.readInt();
2752 }
2753
2754 SourceRange readSourceRange() {
2755 return Reader.readSourceRange();
2756 }
2757
2758 SourceLocation readSourceLocation() {
2759 return Reader.readSourceLocation();
2760 }
2761
2762 Expr *readExpr() { return Reader.readExpr(); }
2763
2764 std::string readString() {
2765 return Reader.readString();
2766 }
2767
2768 TypeSourceInfo *readTypeSourceInfo() {
2769 return Reader.readTypeSourceInfo();
2770 }
2771
2772 IdentifierInfo *readIdentifier() {
2773 return Reader.readIdentifier();
2774 }
2775
2776 VersionTuple readVersionTuple() {
2777 return Reader.readVersionTuple();
2778 }
2779
2780 OMPTraitInfo *readOMPTraitInfo() { return Reader.readOMPTraitInfo(); }
2781
2782 template <typename T> T *GetLocalDeclAs(uint32_t LocalID) {
2783 return Reader.GetLocalDeclAs<T>(LocalID);
2784 }
2785};
2786}
2787
2788Attr *ASTRecordReader::readAttr() {
2789 AttrReader Record(*this);
2790 auto V = Record.readInt();
2791 if (!V)
2792 return nullptr;
2793
2794 Attr *New = nullptr;
2795 // Kind is stored as a 1-based integer because 0 is used to indicate a null
2796 // Attr pointer.
2797 auto Kind = static_cast<attr::Kind>(V - 1);
2798 ASTContext &Context = getContext();
2799
2800 IdentifierInfo *AttrName = Record.readIdentifier();
2801 IdentifierInfo *ScopeName = Record.readIdentifier();
2802 SourceRange AttrRange = Record.readSourceRange();
2803 SourceLocation ScopeLoc = Record.readSourceLocation();
2804 unsigned ParsedKind = Record.readInt();
2805 unsigned Syntax = Record.readInt();
2806 unsigned SpellingIndex = Record.readInt();
2807
2808 AttributeCommonInfo Info(AttrName, ScopeName, AttrRange, ScopeLoc,
2809 AttributeCommonInfo::Kind(ParsedKind),
2810 AttributeCommonInfo::Syntax(Syntax), SpellingIndex);
2811
2812#include "clang/Serialization/AttrPCHRead.inc"
2813
2814 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2814, __extension__ __PRETTY_FUNCTION__))
;
2815 return New;
2816}
2817
2818/// Reads attributes from the current stream position.
2819void ASTRecordReader::readAttributes(AttrVec &Attrs) {
2820 for (unsigned I = 0, E = readInt(); I != E; ++I)
2821 Attrs.push_back(readAttr());
2822}
2823
2824//===----------------------------------------------------------------------===//
2825// ASTReader Implementation
2826//===----------------------------------------------------------------------===//
2827
2828/// Note that we have loaded the declaration with the given
2829/// Index.
2830///
2831/// This routine notes that this declaration has already been loaded,
2832/// so that future GetDecl calls will return this declaration rather
2833/// than trying to load a new declaration.
2834inline void ASTReader::LoadedDecl(unsigned Index, Decl *D) {
2835 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2835, __extension__ __PRETTY_FUNCTION__))
;
2836 DeclsLoaded[Index] = D;
2837}
2838
2839/// Determine whether the consumer will be interested in seeing
2840/// this declaration (via HandleTopLevelDecl).
2841///
2842/// This routine should return true for anything that might affect
2843/// code generation, e.g., inline function definitions, Objective-C
2844/// declarations with metadata, etc.
2845static bool isConsumerInterestedIn(ASTContext &Ctx, Decl *D, bool HasBody) {
2846 // An ObjCMethodDecl is never considered as "interesting" because its
2847 // implementation container always is.
2848
2849 // An ImportDecl or VarDecl imported from a module map module will get
2850 // emitted when we import the relevant module.
2851 if (isPartOfPerModuleInitializer(D)) {
2852 auto *M = D->getImportedOwningModule();
2853 if (M && M->Kind == Module::ModuleMapModule &&
2854 Ctx.DeclMustBeEmitted(D))
2855 return false;
2856 }
2857
2858 if (isa<FileScopeAsmDecl>(D) ||
2859 isa<ObjCProtocolDecl>(D) ||
2860 isa<ObjCImplDecl>(D) ||
2861 isa<ImportDecl>(D) ||
2862 isa<PragmaCommentDecl>(D) ||
2863 isa<PragmaDetectMismatchDecl>(D))
2864 return true;
2865 if (isa<OMPThreadPrivateDecl>(D) || isa<OMPDeclareReductionDecl>(D) ||
2866 isa<OMPDeclareMapperDecl>(D) || isa<OMPAllocateDecl>(D) ||
2867 isa<OMPRequiresDecl>(D))
2868 return !D->getDeclContext()->isFunctionOrMethod();
2869 if (const auto *Var = dyn_cast<VarDecl>(D))
2870 return Var->isFileVarDecl() &&
2871 (Var->isThisDeclarationADefinition() == VarDecl::Definition ||
2872 OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(Var));
2873 if (const auto *Func = dyn_cast<FunctionDecl>(D))
2874 return Func->doesThisDeclarationHaveABody() || HasBody;
2875
2876 if (auto *ES = D->getASTContext().getExternalSource())
2877 if (ES->hasExternalDefinitions(D) == ExternalASTSource::EK_Never)
2878 return true;
2879
2880 return false;
2881}
2882
2883/// Get the correct cursor and offset for loading a declaration.
2884ASTReader::RecordLocation
2885ASTReader::DeclCursorForID(DeclID ID, SourceLocation &Loc) {
2886 GlobalDeclMapType::iterator I = GlobalDeclMap.find(ID);
2887 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2887, __extension__ __PRETTY_FUNCTION__))
;
2888 ModuleFile *M = I->second;
2889 const DeclOffset &DOffs =
2890 M->DeclOffsets[ID - M->BaseDeclID - NUM_PREDEF_DECL_IDS];
2891 Loc = TranslateSourceLocation(*M, DOffs.getLocation());
2892 return RecordLocation(M, DOffs.getBitOffset(M->DeclsBlockStartOffset));
2893}
2894
2895ASTReader::RecordLocation ASTReader::getLocalBitOffset(uint64_t GlobalOffset) {
2896 auto I = GlobalBitOffsetsMap.find(GlobalOffset);
2897
2898 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 2898, __extension__ __PRETTY_FUNCTION__))
;
2899 return RecordLocation(I->second, GlobalOffset - I->second->GlobalBitOffset);
2900}
2901
2902uint64_t ASTReader::getGlobalBitOffset(ModuleFile &M, uint64_t LocalOffset) {
2903 return LocalOffset + M.GlobalBitOffset;
2904}
2905
2906static bool isSameTemplateParameterList(const ASTContext &C,
2907 const TemplateParameterList *X,
2908 const TemplateParameterList *Y);
2909
2910/// Determine whether two template parameters are similar enough
2911/// that they may be used in declarations of the same template.
2912static bool isSameTemplateParameter(const NamedDecl *X,
2913 const NamedDecl *Y) {
2914 if (X->getKind() != Y->getKind())
2915 return false;
2916
2917 if (const auto *TX = dyn_cast<TemplateTypeParmDecl>(X)) {
2918 const auto *TY = cast<TemplateTypeParmDecl>(Y);
2919 if (TX->isParameterPack() != TY->isParameterPack())
2920 return false;
2921 if (TX->hasTypeConstraint() != TY->hasTypeConstraint())
2922 return false;
2923 const TypeConstraint *TXTC = TX->getTypeConstraint();
2924 const TypeConstraint *TYTC = TY->getTypeConstraint();
2925 if (!TXTC != !TYTC)
2926 return false;
2927 if (TXTC && TYTC) {
2928 if (TXTC->getNamedConcept() != TYTC->getNamedConcept())
2929 return false;
2930 if (TXTC->hasExplicitTemplateArgs() != TYTC->hasExplicitTemplateArgs())
2931 return false;
2932 if (TXTC->hasExplicitTemplateArgs()) {
2933 const auto *TXTCArgs = TXTC->getTemplateArgsAsWritten();
2934 const auto *TYTCArgs = TYTC->getTemplateArgsAsWritten();
2935 if (TXTCArgs->NumTemplateArgs != TYTCArgs->NumTemplateArgs)
2936 return false;
2937 llvm::FoldingSetNodeID XID, YID;
2938 for (const auto &ArgLoc : TXTCArgs->arguments())
2939 ArgLoc.getArgument().Profile(XID, X->getASTContext());
2940 for (const auto &ArgLoc : TYTCArgs->arguments())
2941 ArgLoc.getArgument().Profile(YID, Y->getASTContext());
2942 if (XID != YID)
2943 return false;
2944 }
2945 }
2946 return true;
2947 }
2948
2949 if (const auto *TX = dyn_cast<NonTypeTemplateParmDecl>(X)) {
2950 const auto *TY = cast<NonTypeTemplateParmDecl>(Y);
2951 return TX->isParameterPack() == TY->isParameterPack() &&
2952 TX->getASTContext().hasSameType(TX->getType(), TY->getType());
2953 }
2954
2955 const auto *TX = cast<TemplateTemplateParmDecl>(X);
2956 const auto *TY = cast<TemplateTemplateParmDecl>(Y);
2957 return TX->isParameterPack() == TY->isParameterPack() &&
2958 isSameTemplateParameterList(TX->getASTContext(),
2959 TX->getTemplateParameters(),
2960 TY->getTemplateParameters());
2961}
2962
2963static NamespaceDecl *getNamespace(const NestedNameSpecifier *X) {
2964 if (auto *NS = X->getAsNamespace())
2965 return NS;
2966 if (auto *NAS = X->getAsNamespaceAlias())
2967 return NAS->getNamespace();
2968 return nullptr;
2969}
2970
2971static bool isSameQualifier(const NestedNameSpecifier *X,
2972 const NestedNameSpecifier *Y) {
2973 if (auto *NSX = getNamespace(X)) {
2974 auto *NSY = getNamespace(Y);
2975 if (!NSY || NSX->getCanonicalDecl() != NSY->getCanonicalDecl())
2976 return false;
2977 } else if (X->getKind() != Y->getKind())
2978 return false;
2979
2980 // FIXME: For namespaces and types, we're permitted to check that the entity
2981 // is named via the same tokens. We should probably do so.
2982 switch (X->getKind()) {
2983 case NestedNameSpecifier::Identifier:
2984 if (X->getAsIdentifier() != Y->getAsIdentifier())
2985 return false;
2986 break;
2987 case NestedNameSpecifier::Namespace:
2988 case NestedNameSpecifier::NamespaceAlias:
2989 // We've already checked that we named the same namespace.
2990 break;
2991 case NestedNameSpecifier::TypeSpec:
2992 case NestedNameSpecifier::TypeSpecWithTemplate:
2993 if (X->getAsType()->getCanonicalTypeInternal() !=
2994 Y->getAsType()->getCanonicalTypeInternal())
2995 return false;
2996 break;
2997 case NestedNameSpecifier::Global:
2998 case NestedNameSpecifier::Super:
2999 return true;
3000 }
3001
3002 // Recurse into earlier portion of NNS, if any.
3003 auto *PX = X->getPrefix();
3004 auto *PY = Y->getPrefix();
3005 if (PX && PY)
3006 return isSameQualifier(PX, PY);
3007 return !PX && !PY;
3008}
3009
3010/// Determine whether two template parameter lists are similar enough
3011/// that they may be used in declarations of the same template.
3012static bool isSameTemplateParameterList(const ASTContext &C,
3013 const TemplateParameterList *X,
3014 const TemplateParameterList *Y) {
3015 if (X->size() != Y->size())
3016 return false;
3017
3018 for (unsigned I = 0, N = X->size(); I != N; ++I)
3019 if (!isSameTemplateParameter(X->getParam(I), Y->getParam(I)))
3020 return false;
3021
3022 const Expr *XRC = X->getRequiresClause();
3023 const Expr *YRC = Y->getRequiresClause();
3024 if (!XRC != !YRC)
3025 return false;
3026 if (XRC) {
3027 llvm::FoldingSetNodeID XRCID, YRCID;
3028 XRC->Profile(XRCID, C, /*Canonical=*/true);
3029 YRC->Profile(YRCID, C, /*Canonical=*/true);
3030 if (XRCID != YRCID)
3031 return false;
3032 }
3033
3034 return true;
3035}
3036
3037/// Determine whether the attributes we can overload on are identical for A and
3038/// B. Will ignore any overloadable attrs represented in the type of A and B.
3039static bool hasSameOverloadableAttrs(const FunctionDecl *A,
3040 const FunctionDecl *B) {
3041 // Note that pass_object_size attributes are represented in the function's
3042 // ExtParameterInfo, so we don't need to check them here.
3043
3044 llvm::FoldingSetNodeID Cand1ID, Cand2ID;
3045 auto AEnableIfAttrs = A->specific_attrs<EnableIfAttr>();
3046 auto BEnableIfAttrs = B->specific_attrs<EnableIfAttr>();
3047
3048 for (auto Pair : zip_longest(AEnableIfAttrs, BEnableIfAttrs)) {
3049 Optional<EnableIfAttr *> Cand1A = std::get<0>(Pair);
3050 Optional<EnableIfAttr *> Cand2A = std::get<1>(Pair);
3051
3052 // Return false if the number of enable_if attributes is different.
3053 if (!Cand1A || !Cand2A)
3054 return false;
3055
3056 Cand1ID.clear();
3057 Cand2ID.clear();
3058
3059 (*Cand1A)->getCond()->Profile(Cand1ID, A->getASTContext(), true);
3060 (*Cand2A)->getCond()->Profile(Cand2ID, B->getASTContext(), true);
3061
3062 // Return false if any of the enable_if expressions of A and B are
3063 // different.
3064 if (Cand1ID != Cand2ID)
3065 return false;
3066 }
3067 return true;
3068}
3069
3070/// Determine whether the two declarations refer to the same entity.
3071static bool isSameEntity(NamedDecl *X, NamedDecl *Y) {
3072 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3072, __extension__ __PRETTY_FUNCTION__))
;
3073
3074 if (X == Y)
3075 return true;
3076
3077 // Must be in the same context.
3078 //
3079 // Note that we can't use DeclContext::Equals here, because the DeclContexts
3080 // could be two different declarations of the same function. (We will fix the
3081 // semantic DC to refer to the primary definition after merging.)
3082 if (!declaresSameEntity(cast<Decl>(X->getDeclContext()->getRedeclContext()),
3083 cast<Decl>(Y->getDeclContext()->getRedeclContext())))
3084 return false;
3085
3086 // Two typedefs refer to the same entity if they have the same underlying
3087 // type.
3088 if (const auto *TypedefX = dyn_cast<TypedefNameDecl>(X))
3089 if (const auto *TypedefY = dyn_cast<TypedefNameDecl>(Y))
3090 return X->getASTContext().hasSameType(TypedefX->getUnderlyingType(),
3091 TypedefY->getUnderlyingType());
3092
3093 // Must have the same kind.
3094 if (X->getKind() != Y->getKind())
3095 return false;
3096
3097 // Objective-C classes and protocols with the same name always match.
3098 if (isa<ObjCInterfaceDecl>(X) || isa<ObjCProtocolDecl>(X))
3099 return true;
3100
3101 if (isa<ClassTemplateSpecializationDecl>(X)) {
3102 // No need to handle these here: we merge them when adding them to the
3103 // template.
3104 return false;
3105 }
3106
3107 // Compatible tags match.
3108 if (const auto *TagX = dyn_cast<TagDecl>(X)) {
3109 const auto *TagY = cast<TagDecl>(Y);
3110 return (TagX->getTagKind() == TagY->getTagKind()) ||
3111 ((TagX->getTagKind() == TTK_Struct || TagX->getTagKind() == TTK_Class ||
3112 TagX->getTagKind() == TTK_Interface) &&
3113 (TagY->getTagKind() == TTK_Struct || TagY->getTagKind() == TTK_Class ||
3114 TagY->getTagKind() == TTK_Interface));
3115 }
3116
3117 // Functions with the same type and linkage match.
3118 // FIXME: This needs to cope with merging of prototyped/non-prototyped
3119 // functions, etc.
3120 if (const auto *FuncX = dyn_cast<FunctionDecl>(X)) {
3121 const auto *FuncY = cast<FunctionDecl>(Y);
3122 if (const auto *CtorX = dyn_cast<CXXConstructorDecl>(X)) {
3123 const auto *CtorY = cast<CXXConstructorDecl>(Y);
3124 if (CtorX->getInheritedConstructor() &&
3125 !isSameEntity(CtorX->getInheritedConstructor().getConstructor(),
3126 CtorY->getInheritedConstructor().getConstructor()))
3127 return false;
3128 }
3129
3130 if (FuncX->isMultiVersion() != FuncY->isMultiVersion())
3131 return false;
3132
3133 // Multiversioned functions with different feature strings are represented
3134 // as separate declarations.
3135 if (FuncX->isMultiVersion()) {
3136 const auto *TAX = FuncX->getAttr<TargetAttr>();
3137 const auto *TAY = FuncY->getAttr<TargetAttr>();
3138 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3138, __extension__ __PRETTY_FUNCTION__))
;
3139
3140 if (TAX->getFeaturesStr() != TAY->getFeaturesStr())
3141 return false;
3142 }
3143
3144 ASTContext &C = FuncX->getASTContext();
3145
3146 const Expr *XRC = FuncX->getTrailingRequiresClause();
3147 const Expr *YRC = FuncY->getTrailingRequiresClause();
3148 if (!XRC != !YRC)
3149 return false;
3150 if (XRC) {
3151 llvm::FoldingSetNodeID XRCID, YRCID;
3152 XRC->Profile(XRCID, C, /*Canonical=*/true);
3153 YRC->Profile(YRCID, C, /*Canonical=*/true);
3154 if (XRCID != YRCID)
3155 return false;
3156 }
3157
3158 auto GetTypeAsWritten = [](const FunctionDecl *FD) {
3159 // Map to the first declaration that we've already merged into this one.
3160 // The TSI of redeclarations might not match (due to calling conventions
3161 // being inherited onto the type but not the TSI), but the TSI type of
3162 // the first declaration of the function should match across modules.
3163 FD = FD->getCanonicalDecl();
3164 return FD->getTypeSourceInfo() ? FD->getTypeSourceInfo()->getType()
3165 : FD->getType();
3166 };
3167 QualType XT = GetTypeAsWritten(FuncX), YT = GetTypeAsWritten(FuncY);
3168 if (!C.hasSameType(XT, YT)) {
3169 // We can get functions with different types on the redecl chain in C++17
3170 // if they have differing exception specifications and at least one of
3171 // the excpetion specs is unresolved.
3172 auto *XFPT = XT->getAs<FunctionProtoType>();
3173 auto *YFPT = YT->getAs<FunctionProtoType>();
3174 if (C.getLangOpts().CPlusPlus17 && XFPT && YFPT &&
3175 (isUnresolvedExceptionSpec(XFPT->getExceptionSpecType()) ||
3176 isUnresolvedExceptionSpec(YFPT->getExceptionSpecType())) &&
3177 C.hasSameFunctionTypeIgnoringExceptionSpec(XT, YT))
3178 return true;
3179 return false;
3180 }
3181
3182 return FuncX->getLinkageInternal() == FuncY->getLinkageInternal() &&
3183 hasSameOverloadableAttrs(FuncX, FuncY);
3184 }
3185
3186 // Variables with the same type and linkage match.
3187 if (const auto *VarX = dyn_cast<VarDecl>(X)) {
3188 const auto *VarY = cast<VarDecl>(Y);
3189 if (VarX->getLinkageInternal() == VarY->getLinkageInternal()) {
3190 ASTContext &C = VarX->getASTContext();
3191 if (C.hasSameType(VarX->getType(), VarY->getType()))
3192 return true;
3193
3194 // We can get decls with different types on the redecl chain. Eg.
3195 // template <typename T> struct S { static T Var[]; }; // #1
3196 // template <typename T> T S<T>::Var[sizeof(T)]; // #2
3197 // Only? happens when completing an incomplete array type. In this case
3198 // when comparing #1 and #2 we should go through their element type.
3199 const ArrayType *VarXTy = C.getAsArrayType(VarX->getType());
3200 const ArrayType *VarYTy = C.getAsArrayType(VarY->getType());
3201 if (!VarXTy || !VarYTy)
3202 return false;
3203 if (VarXTy->isIncompleteArrayType() || VarYTy->isIncompleteArrayType())
3204 return C.hasSameType(VarXTy->getElementType(), VarYTy->getElementType());
3205 }
3206 return false;
3207 }
3208
3209 // Namespaces with the same name and inlinedness match.
3210 if (const auto *NamespaceX = dyn_cast<NamespaceDecl>(X)) {
3211 const auto *NamespaceY = cast<NamespaceDecl>(Y);
3212 return NamespaceX->isInline() == NamespaceY->isInline();
3213 }
3214
3215 // Identical template names and kinds match if their template parameter lists
3216 // and patterns match.
3217 if (const auto *TemplateX = dyn_cast<TemplateDecl>(X)) {
3218 const auto *TemplateY = cast<TemplateDecl>(Y);
3219 return isSameEntity(TemplateX->getTemplatedDecl(),
3220 TemplateY->getTemplatedDecl()) &&
3221 isSameTemplateParameterList(TemplateX->getASTContext(),
3222 TemplateX->getTemplateParameters(),
3223 TemplateY->getTemplateParameters());
3224 }
3225
3226 // Fields with the same name and the same type match.
3227 if (const auto *FDX = dyn_cast<FieldDecl>(X)) {
3228 const auto *FDY = cast<FieldDecl>(Y);
3229 // FIXME: Also check the bitwidth is odr-equivalent, if any.
3230 return X->getASTContext().hasSameType(FDX->getType(), FDY->getType());
3231 }
3232
3233 // Indirect fields with the same target field match.
3234 if (const auto *IFDX = dyn_cast<IndirectFieldDecl>(X)) {
3235 const auto *IFDY = cast<IndirectFieldDecl>(Y);
3236 return IFDX->getAnonField()->getCanonicalDecl() ==
3237 IFDY->getAnonField()->getCanonicalDecl();
3238 }
3239
3240 // Enumerators with the same name match.
3241 if (isa<EnumConstantDecl>(X))
3242 // FIXME: Also check the value is odr-equivalent.
3243 return true;
3244
3245 // Using shadow declarations with the same target match.
3246 if (const auto *USX = dyn_cast<UsingShadowDecl>(X)) {
3247 const auto *USY = cast<UsingShadowDecl>(Y);
3248 return USX->getTargetDecl() == USY->getTargetDecl();
3249 }
3250
3251 // Using declarations with the same qualifier match. (We already know that
3252 // the name matches.)
3253 if (const auto *UX = dyn_cast<UsingDecl>(X)) {
3254 const auto *UY = cast<UsingDecl>(Y);
3255 return isSameQualifier(UX->getQualifier(), UY->getQualifier()) &&
3256 UX->hasTypename() == UY->hasTypename() &&
3257 UX->isAccessDeclaration() == UY->isAccessDeclaration();
3258 }
3259 if (const auto *UX = dyn_cast<UnresolvedUsingValueDecl>(X)) {
3260 const auto *UY = cast<UnresolvedUsingValueDecl>(Y);
3261 return isSameQualifier(UX->getQualifier(), UY->getQualifier()) &&
3262 UX->isAccessDeclaration() == UY->isAccessDeclaration();
3263 }
3264 if (const auto *UX = dyn_cast<UnresolvedUsingTypenameDecl>(X)) {
3265 return isSameQualifier(
3266 UX->getQualifier(),
3267 cast<UnresolvedUsingTypenameDecl>(Y)->getQualifier());
3268 }
3269
3270 // Using-pack declarations are only created by instantiation, and match if
3271 // they're instantiated from matching UnresolvedUsing...Decls.
3272 if (const auto *UX = dyn_cast<UsingPackDecl>(X)) {
3273 return declaresSameEntity(
3274 UX->getInstantiatedFromUsingDecl(),
3275 cast<UsingPackDecl>(Y)->getInstantiatedFromUsingDecl());
3276 }
3277
3278 // Namespace alias definitions with the same target match.
3279 if (const auto *NAX = dyn_cast<NamespaceAliasDecl>(X)) {
3280 const auto *NAY = cast<NamespaceAliasDecl>(Y);
3281 return NAX->getNamespace()->Equals(NAY->getNamespace());
3282 }
3283
3284 return false;
3285}
3286
3287/// Find the context in which we should search for previous declarations when
3288/// looking for declarations to merge.
3289DeclContext *ASTDeclReader::getPrimaryContextForMerging(ASTReader &Reader,
3290 DeclContext *DC) {
3291 if (auto *ND = dyn_cast<NamespaceDecl>(DC))
3292 return ND->getOriginalNamespace();
3293
3294 if (auto *RD = dyn_cast<CXXRecordDecl>(DC)) {
3295 // Try to dig out the definition.
3296 auto *DD = RD->DefinitionData;
3297 if (!DD)
3298 DD = RD->getCanonicalDecl()->DefinitionData;
3299
3300 // If there's no definition yet, then DC's definition is added by an update
3301 // record, but we've not yet loaded that update record. In this case, we
3302 // commit to DC being the canonical definition now, and will fix this when
3303 // we load the update record.
3304 if (!DD) {
3305 DD = new (Reader.getContext()) struct CXXRecordDecl::DefinitionData(RD);
3306 RD->setCompleteDefinition(true);
3307 RD->DefinitionData = DD;
3308 RD->getCanonicalDecl()->DefinitionData = DD;
3309
3310 // Track that we did this horrible thing so that we can fix it later.
3311 Reader.PendingFakeDefinitionData.insert(
3312 std::make_pair(DD, ASTReader::PendingFakeDefinitionKind::Fake));
3313 }
3314
3315 return DD->Definition;
3316 }
3317
3318 if (auto *ED = dyn_cast<EnumDecl>(DC))
3319 return ED->getASTContext().getLangOpts().CPlusPlus? ED->getDefinition()
3320 : nullptr;
3321
3322 // We can see the TU here only if we have no Sema object. In that case,
3323 // there's no TU scope to look in, so using the DC alone is sufficient.
3324 if (auto *TU = dyn_cast<TranslationUnitDecl>(DC))
3325 return TU;
3326
3327 return nullptr;
3328}
3329
3330ASTDeclReader::FindExistingResult::~FindExistingResult() {
3331 // Record that we had a typedef name for linkage whether or not we merge
3332 // with that declaration.
3333 if (TypedefNameForLinkage) {
3334 DeclContext *DC = New->getDeclContext()->getRedeclContext();
3335 Reader.ImportedTypedefNamesForLinkage.insert(
3336 std::make_pair(std::make_pair(DC, TypedefNameForLinkage), New));
3337 return;
3338 }
3339
3340 if (!AddResult || Existing)
3341 return;
3342
3343 DeclarationName Name = New->getDeclName();
3344 DeclContext *DC = New->getDeclContext()->getRedeclContext();
3345 if (needsAnonymousDeclarationNumber(New)) {
3346 setAnonymousDeclForMerging(Reader, New->getLexicalDeclContext(),
3347 AnonymousDeclNumber, New);
3348 } else if (DC->isTranslationUnit() &&
3349 !Reader.getContext().getLangOpts().CPlusPlus) {
3350 if (Reader.getIdResolver().tryAddTopLevelDecl(New, Name))
3351 Reader.PendingFakeLookupResults[Name.getAsIdentifierInfo()]
3352 .push_back(New);
3353 } else if (DeclContext *MergeDC = getPrimaryContextForMerging(Reader, DC)) {
3354 // Add the declaration to its redeclaration context so later merging
3355 // lookups will find it.
3356 MergeDC->makeDeclVisibleInContextImpl(New, /*Internal*/true);
3357 }
3358}
3359
3360/// Find the declaration that should be merged into, given the declaration found
3361/// by name lookup. If we're merging an anonymous declaration within a typedef,
3362/// we need a matching typedef, and we merge with the type inside it.
3363static NamedDecl *getDeclForMerging(NamedDecl *Found,
3364 bool IsTypedefNameForLinkage) {
3365 if (!IsTypedefNameForLinkage)
3366 return Found;
3367
3368 // If we found a typedef declaration that gives a name to some other
3369 // declaration, then we want that inner declaration. Declarations from
3370 // AST files are handled via ImportedTypedefNamesForLinkage.
3371 if (Found->isFromASTFile())
3372 return nullptr;
3373
3374 if (auto *TND = dyn_cast<TypedefNameDecl>(Found))
3375 return TND->getAnonDeclWithTypedefName(/*AnyRedecl*/true);
3376
3377 return nullptr;
3378}
3379
3380/// Find the declaration to use to populate the anonymous declaration table
3381/// for the given lexical DeclContext. We only care about finding local
3382/// definitions of the context; we'll merge imported ones as we go.
3383DeclContext *
3384ASTDeclReader::getPrimaryDCForAnonymousDecl(DeclContext *LexicalDC) {
3385 // For classes, we track the definition as we merge.
3386 if (auto *RD
16.1
'RD' is null
= dyn_cast<CXXRecordDecl>(LexicalDC)) {
16
Assuming 'LexicalDC' is not a 'CXXRecordDecl'
17
Taking false branch
3387 auto *DD = RD->getCanonicalDecl()->DefinitionData;
3388 return DD ? DD->Definition : nullptr;
3389 }
3390
3391 // For anything else, walk its merged redeclarations looking for a definition.
3392 // Note that we can't just call getDefinition here because the redeclaration
3393 // chain isn't wired up.
3394 for (auto *D : merged_redecls(cast<Decl>(LexicalDC))) {
18
'LexicalDC' is a 'Decl'
23
Calling 'MergedRedeclIterator::operator++'
27
Returning from 'MergedRedeclIterator::operator++'
32
Calling 'MergedRedeclIterator::operator++'
3395 if (auto *FD
19.1
'FD' is null
= dyn_cast<FunctionDecl>(D))
19
Assuming 'D' is not a 'FunctionDecl'
20
Taking false branch
28
Assuming 'FD' is null
29
Taking false branch
3396 if (FD->isThisDeclarationADefinition())
3397 return FD;
3398 if (auto *MD
21.1
'MD' is null
= dyn_cast<ObjCMethodDecl>(D))
21
Assuming 'D' is not a 'ObjCMethodDecl'
22
Taking false branch
30
Assuming 'MD' is null
31
Taking false branch
3399 if (MD->isThisDeclarationADefinition())
3400 return MD;
3401 }
3402
3403 // No merged definition yet.
3404 return nullptr;
3405}
3406
3407NamedDecl *ASTDeclReader::getAnonymousDeclForMerging(ASTReader &Reader,
3408 DeclContext *DC,
3409 unsigned Index) {
3410 // If the lexical context has been merged, look into the now-canonical
3411 // definition.
3412 auto *CanonDC = cast<Decl>(DC)->getCanonicalDecl();
13
'DC' is a 'Decl'
3413
3414 // If we've seen this before, return the canonical declaration.
3415 auto &Previous = Reader.AnonymousDeclarationsForMerging[CanonDC];
3416 if (Index < Previous.size() && Previous[Index])
14
Assuming the condition is false
3417 return Previous[Index];
3418
3419 // If this is the first time, but we have parsed a declaration of the context,
3420 // build the anonymous declaration list from the parsed declaration.
3421 auto *PrimaryDC = getPrimaryDCForAnonymousDecl(DC);
15
Calling 'ASTDeclReader::getPrimaryDCForAnonymousDecl'
3422 if (PrimaryDC && !cast<Decl>(PrimaryDC)->isFromASTFile()) {
3423 numberAnonymousDeclsWithin(PrimaryDC, [&](NamedDecl *ND, unsigned Number) {
3424 if (Previous.size() == Number)
3425 Previous.push_back(cast<NamedDecl>(ND->getCanonicalDecl()));
3426 else
3427 Previous[Number] = cast<NamedDecl>(ND->getCanonicalDecl());
3428 });
3429 }
3430
3431 return Index < Previous.size() ? Previous[Index] : nullptr;
3432}
3433
3434void ASTDeclReader::setAnonymousDeclForMerging(ASTReader &Reader,
3435 DeclContext *DC, unsigned Index,
3436 NamedDecl *D) {
3437 auto *CanonDC = cast<Decl>(DC)->getCanonicalDecl();
3438
3439 auto &Previous = Reader.AnonymousDeclarationsForMerging[CanonDC];
3440 if (Index >= Previous.size())
3441 Previous.resize(Index + 1);
3442 if (!Previous[Index])
3443 Previous[Index] = D;
3444}
3445
3446ASTDeclReader::FindExistingResult ASTDeclReader::findExisting(NamedDecl *D) {
3447 DeclarationName Name = TypedefNameForLinkage ? TypedefNameForLinkage
5
Assuming field 'TypedefNameForLinkage' is null
6
'?' condition is false
3448 : D->getDeclName();
3449
3450 if (!Name && !needsAnonymousDeclarationNumber(D)) {
7
Assuming the condition is false
8
Taking false branch
3451 // Don't bother trying to find unnamed declarations that are in
3452 // unmergeable contexts.
3453 FindExistingResult Result(Reader, D, /*Existing=*/nullptr,
3454 AnonymousDeclNumber, TypedefNameForLinkage);
3455 Result.suppress();
3456 return Result;
3457 }
3458
3459 DeclContext *DC = D->getDeclContext()->getRedeclContext();
3460 if (TypedefNameForLinkage
8.1
Field 'TypedefNameForLinkage' is null
) {
9
Taking false branch
3461 auto It = Reader.ImportedTypedefNamesForLinkage.find(
3462 std::make_pair(DC, TypedefNameForLinkage));
3463 if (It != Reader.ImportedTypedefNamesForLinkage.end())
3464 if (isSameEntity(It->second, D))
3465 return FindExistingResult(Reader, D, It->second, AnonymousDeclNumber,
3466 TypedefNameForLinkage);
3467 // Go on to check in other places in case an existing typedef name
3468 // was not imported.
3469 }
3470
3471 if (needsAnonymousDeclarationNumber(D)) {
10
Assuming the condition is true
11
Taking true branch
3472 // This is an anonymous declaration that we may need to merge. Look it up
3473 // in its context by number.
3474 if (auto *Existing = getAnonymousDeclForMerging(
12
Calling 'ASTDeclReader::getAnonymousDeclForMerging'
3475 Reader, D->getLexicalDeclContext(), AnonymousDeclNumber))
3476 if (isSameEntity(Existing, D))
3477 return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,
3478 TypedefNameForLinkage);
3479 } else if (DC->isTranslationUnit() &&
3480 !Reader.getContext().getLangOpts().CPlusPlus) {
3481 IdentifierResolver &IdResolver = Reader.getIdResolver();
3482
3483 // Temporarily consider the identifier to be up-to-date. We don't want to
3484 // cause additional lookups here.
3485 class UpToDateIdentifierRAII {
3486 IdentifierInfo *II;
3487 bool WasOutToDate = false;
3488
3489 public:
3490 explicit UpToDateIdentifierRAII(IdentifierInfo *II) : II(II) {
3491 if (II) {
3492 WasOutToDate = II->isOutOfDate();
3493 if (WasOutToDate)
3494 II->setOutOfDate(false);
3495 }
3496 }
3497
3498 ~UpToDateIdentifierRAII() {
3499 if (WasOutToDate)
3500 II->setOutOfDate(true);
3501 }
3502 } UpToDate(Name.getAsIdentifierInfo());
3503
3504 for (IdentifierResolver::iterator I = IdResolver.begin(Name),
3505 IEnd = IdResolver.end();
3506 I != IEnd; ++I) {
3507 if (NamedDecl *Existing = getDeclForMerging(*I, TypedefNameForLinkage))
3508 if (isSameEntity(Existing, D))
3509 return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,
3510 TypedefNameForLinkage);
3511 }
3512 } else if (DeclContext *MergeDC = getPrimaryContextForMerging(Reader, DC)) {
3513 DeclContext::lookup_result R = MergeDC->noload_lookup(Name);
3514 for (DeclContext::lookup_iterator I = R.begin(), E = R.end(); I != E; ++I) {
3515 if (NamedDecl *Existing = getDeclForMerging(*I, TypedefNameForLinkage))
3516 if (isSameEntity(Existing, D))
3517 return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,
3518 TypedefNameForLinkage);
3519 }
3520 } else {
3521 // Not in a mergeable context.
3522 return FindExistingResult(Reader);
3523 }
3524
3525 // If this declaration is from a merged context, make a note that we need to
3526 // check that the canonical definition of that context contains the decl.
3527 //
3528 // FIXME: We should do something similar if we merge two definitions of the
3529 // same template specialization into the same CXXRecordDecl.
3530 auto MergedDCIt = Reader.MergedDeclContexts.find(D->getLexicalDeclContext());
3531 if (MergedDCIt != Reader.MergedDeclContexts.end() &&
3532 MergedDCIt->second == D->getDeclContext())
3533 Reader.PendingOdrMergeChecks.push_back(D);
3534
3535 return FindExistingResult(Reader, D, /*Existing=*/nullptr,
3536 AnonymousDeclNumber, TypedefNameForLinkage);
3537}
3538
3539template<typename DeclT>
3540Decl *ASTDeclReader::getMostRecentDeclImpl(Redeclarable<DeclT> *D) {
3541 return D->RedeclLink.getLatestNotUpdated();
3542}
3543
3544Decl *ASTDeclReader::getMostRecentDeclImpl(...) {
3545 llvm_unreachable("getMostRecentDecl on non-redeclarable declaration")::llvm::llvm_unreachable_internal("getMostRecentDecl on non-redeclarable declaration"
, "/build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3545)
;
3546}
3547
3548Decl *ASTDeclReader::getMostRecentDecl(Decl *D) {
3549 assert(D)(static_cast <bool> (D) ? void (0) : __assert_fail ("D"
, "/build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3549, __extension__ __PRETTY_FUNCTION__))
;
3550
3551 switch (D->getKind()) {
3552#define ABSTRACT_DECL(TYPE)
3553#define DECL(TYPE, BASE) \
3554 case Decl::TYPE: \
3555 return getMostRecentDeclImpl(cast<TYPE##Decl>(D));
3556#include "clang/AST/DeclNodes.inc"
3557 }
3558 llvm_unreachable("unknown decl kind")::llvm::llvm_unreachable_internal("unknown decl kind", "/build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3558)
;
3559}
3560
3561Decl *ASTReader::getMostRecentExistingDecl(Decl *D) {
3562 return ASTDeclReader::getMostRecentDecl(D->getCanonicalDecl());
3563}
3564
3565void ASTDeclReader::mergeInheritableAttributes(ASTReader &Reader, Decl *D,
3566 Decl *Previous) {
3567 InheritableAttr *NewAttr = nullptr;
3568 ASTContext &Context = Reader.getContext();
3569 const auto *IA = Previous->getAttr<MSInheritanceAttr>();
3570
3571 if (IA && !D->hasAttr<MSInheritanceAttr>()) {
3572 NewAttr = cast<InheritableAttr>(IA->clone(Context));
3573 NewAttr->setInherited(true);
3574 D->addAttr(NewAttr);
3575 }
3576}
3577
3578template<typename DeclT>
3579void ASTDeclReader::attachPreviousDeclImpl(ASTReader &Reader,
3580 Redeclarable<DeclT> *D,
3581 Decl *Previous, Decl *Canon) {
3582 D->RedeclLink.setPrevious(cast<DeclT>(Previous));
3583 D->First = cast<DeclT>(Previous)->First;
3584}
3585
3586namespace clang {
3587
3588template<>
3589void ASTDeclReader::attachPreviousDeclImpl(ASTReader &Reader,
3590 Redeclarable<VarDecl> *D,
3591 Decl *Previous, Decl *Canon) {
3592 auto *VD = static_cast<VarDecl *>(D);
3593 auto *PrevVD = cast<VarDecl>(Previous);
3594 D->RedeclLink.setPrevious(PrevVD);
3595 D->First = PrevVD->First;
3596
3597 // We should keep at most one definition on the chain.
3598 // FIXME: Cache the definition once we've found it. Building a chain with
3599 // N definitions currently takes O(N^2) time here.
3600 if (VD->isThisDeclarationADefinition() == VarDecl::Definition) {
3601 for (VarDecl *CurD = PrevVD; CurD; CurD = CurD->getPreviousDecl()) {
3602 if (CurD->isThisDeclarationADefinition() == VarDecl::Definition) {
3603 Reader.mergeDefinitionVisibility(CurD, VD);
3604 VD->demoteThisDefinitionToDeclaration();
3605 break;
3606 }
3607 }
3608 }
3609}
3610
3611static bool isUndeducedReturnType(QualType T) {
3612 auto *DT = T->getContainedDeducedType();
3613 return DT && !DT->isDeduced();
3614}
3615
3616template<>
3617void ASTDeclReader::attachPreviousDeclImpl(ASTReader &Reader,
3618 Redeclarable<FunctionDecl> *D,
3619 Decl *Previous, Decl *Canon) {
3620 auto *FD = static_cast<FunctionDecl *>(D);
3621 auto *PrevFD = cast<FunctionDecl>(Previous);
3622
3623 FD->RedeclLink.setPrevious(PrevFD);
3624 FD->First = PrevFD->First;
3625
3626 // If the previous declaration is an inline function declaration, then this
3627 // declaration is too.
3628 if (PrevFD->isInlined() != FD->isInlined()) {
3629 // FIXME: [dcl.fct.spec]p4:
3630 // If a function with external linkage is declared inline in one
3631 // translation unit, it shall be declared inline in all translation
3632 // units in which it appears.
3633 //
3634 // Be careful of this case:
3635 //
3636 // module A:
3637 // template<typename T> struct X { void f(); };
3638 // template<typename T> inline void X<T>::f() {}
3639 //
3640 // module B instantiates the declaration of X<int>::f
3641 // module C instantiates the definition of X<int>::f
3642 //
3643 // If module B and C are merged, we do not have a violation of this rule.
3644 FD->setImplicitlyInline(true);
3645 }
3646
3647 auto *FPT = FD->getType()->getAs<FunctionProtoType>();
3648 auto *PrevFPT = PrevFD->getType()->getAs<FunctionProtoType>();
3649 if (FPT && PrevFPT) {
3650 // If we need to propagate an exception specification along the redecl
3651 // chain, make a note of that so that we can do so later.
3652 bool IsUnresolved = isUnresolvedExceptionSpec(FPT->getExceptionSpecType());
3653 bool WasUnresolved =
3654 isUnresolvedExceptionSpec(PrevFPT->getExceptionSpecType());
3655 if (IsUnresolved != WasUnresolved)
3656 Reader.PendingExceptionSpecUpdates.insert(
3657 {Canon, IsUnresolved ? PrevFD : FD});
3658
3659 // If we need to propagate a deduced return type along the redecl chain,
3660 // make a note of that so that we can do it later.
3661 bool IsUndeduced = isUndeducedReturnType(FPT->getReturnType());
3662 bool WasUndeduced = isUndeducedReturnType(PrevFPT->getReturnType());
3663 if (IsUndeduced != WasUndeduced)
3664 Reader.PendingDeducedTypeUpdates.insert(
3665 {cast<FunctionDecl>(Canon),
3666 (IsUndeduced ? PrevFPT : FPT)->getReturnType()});
3667 }
3668}
3669
3670} // namespace clang
3671
3672void ASTDeclReader::attachPreviousDeclImpl(ASTReader &Reader, ...) {
3673 llvm_unreachable("attachPreviousDecl on non-redeclarable declaration")::llvm::llvm_unreachable_internal("attachPreviousDecl on non-redeclarable declaration"
, "/build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3673)
;
3674}
3675
3676/// Inherit the default template argument from \p From to \p To. Returns
3677/// \c false if there is no default template for \p From.
3678template <typename ParmDecl>
3679static bool inheritDefaultTemplateArgument(ASTContext &Context, ParmDecl *From,
3680 Decl *ToD) {
3681 auto *To = cast<ParmDecl>(ToD);
3682 if (!From->hasDefaultArgument())
3683 return false;
3684 To->setInheritedDefaultArgument(Context, From);
3685 return true;
3686}
3687
3688static void inheritDefaultTemplateArguments(ASTContext &Context,
3689 TemplateDecl *From,
3690 TemplateDecl *To) {
3691 auto *FromTP = From->getTemplateParameters();
3692 auto *ToTP = To->getTemplateParameters();
3693 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3693, __extension__ __PRETTY_FUNCTION__))
;
3694
3695 for (unsigned I = 0, N = FromTP->size(); I != N; ++I) {
3696 NamedDecl *FromParam = FromTP->getParam(I);
3697 NamedDecl *ToParam = ToTP->getParam(I);
3698
3699 if (auto *FTTP = dyn_cast<TemplateTypeParmDecl>(FromParam))
3700 inheritDefaultTemplateArgument(Context, FTTP, ToParam);
3701 else if (auto *FNTTP = dyn_cast<NonTypeTemplateParmDecl>(FromParam))
3702 inheritDefaultTemplateArgument(Context, FNTTP, ToParam);
3703 else
3704 inheritDefaultTemplateArgument(
3705 Context, cast<TemplateTemplateParmDecl>(FromParam), ToParam);
3706 }
3707}
3708
3709void ASTDeclReader::attachPreviousDecl(ASTReader &Reader, Decl *D,
3710 Decl *Previous, Decl *Canon) {
3711 assert(D && Previous)(static_cast <bool> (D && Previous) ? void (0) :
__assert_fail ("D && Previous", "/build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3711, __extension__ __PRETTY_FUNCTION__))
;
3712
3713 switch (D->getKind()) {
3714#define ABSTRACT_DECL(TYPE)
3715#define DECL(TYPE, BASE) \
3716 case Decl::TYPE: \
3717 attachPreviousDeclImpl(Reader, cast<TYPE##Decl>(D), Previous, Canon); \
3718 break;
3719#include "clang/AST/DeclNodes.inc"
3720 }
3721
3722 // If the declaration was visible in one module, a redeclaration of it in
3723 // another module remains visible even if it wouldn't be visible by itself.
3724 //
3725 // FIXME: In this case, the declaration should only be visible if a module
3726 // that makes it visible has been imported.
3727 D->IdentifierNamespace |=
3728 Previous->IdentifierNamespace &
3729 (Decl::IDNS_Ordinary | Decl::IDNS_Tag | Decl::IDNS_Type);
3730
3731 // If the declaration declares a template, it may inherit default arguments
3732 // from the previous declaration.
3733 if (auto *TD = dyn_cast<TemplateDecl>(D))
3734 inheritDefaultTemplateArguments(Reader.getContext(),
3735 cast<TemplateDecl>(Previous), TD);
3736
3737 // If any of the declaration in the chain contains an Inheritable attribute,
3738 // it needs to be added to all the declarations in the redeclarable chain.
3739 // FIXME: Only the logic of merging MSInheritableAttr is present, it should
3740 // be extended for all inheritable attributes.
3741 mergeInheritableAttributes(Reader, D, Previous);
3742}
3743
3744template<typename DeclT>
3745void ASTDeclReader::attachLatestDeclImpl(Redeclarable<DeclT> *D, Decl *Latest) {
3746 D->RedeclLink.setLatest(cast<DeclT>(Latest));
3747}
3748
3749void ASTDeclReader::attachLatestDeclImpl(...) {
3750 llvm_unreachable("attachLatestDecl on non-redeclarable declaration")::llvm::llvm_unreachable_internal("attachLatestDecl on non-redeclarable declaration"
, "/build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3750)
;
3751}
3752
3753void ASTDeclReader::attachLatestDecl(Decl *D, Decl *Latest) {
3754 assert(D && Latest)(static_cast <bool> (D && Latest) ? void (0) : __assert_fail
("D && Latest", "/build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3754, __extension__ __PRETTY_FUNCTION__))
;
3755
3756 switch (D->getKind()) {
3757#define ABSTRACT_DECL(TYPE)
3758#define DECL(TYPE, BASE) \
3759 case Decl::TYPE: \
3760 attachLatestDeclImpl(cast<TYPE##Decl>(D), Latest); \
3761 break;
3762#include "clang/AST/DeclNodes.inc"
3763 }
3764}
3765
3766template<typename DeclT>
3767void ASTDeclReader::markIncompleteDeclChainImpl(Redeclarable<DeclT> *D) {
3768 D->RedeclLink.markIncomplete();
3769}
3770
3771void ASTDeclReader::markIncompleteDeclChainImpl(...) {
3772 llvm_unreachable("markIncompleteDeclChain on non-redeclarable declaration")::llvm::llvm_unreachable_internal("markIncompleteDeclChain on non-redeclarable declaration"
, "/build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3772)
;
3773}
3774
3775void ASTReader::markIncompleteDeclChain(Decl *D) {
3776 switch (D->getKind()) {
3777#define ABSTRACT_DECL(TYPE)
3778#define DECL(TYPE, BASE) \
3779 case Decl::TYPE: \
3780 ASTDeclReader::markIncompleteDeclChainImpl(cast<TYPE##Decl>(D)); \
3781 break;
3782#include "clang/AST/DeclNodes.inc"
3783 }
3784}
3785
3786/// Read the declaration at the given offset from the AST file.
3787Decl *ASTReader::ReadDeclRecord(DeclID ID) {
3788 unsigned Index = ID - NUM_PREDEF_DECL_IDS;
3789 SourceLocation DeclLoc;
3790 RecordLocation Loc = DeclCursorForID(ID, DeclLoc);
3791 llvm::BitstreamCursor &DeclsCursor = Loc.F->DeclsCursor;
3792 // Keep track of where we are in the stream, then jump back there
3793 // after reading this declaration.
3794 SavedStreamPosition SavedPosition(DeclsCursor);
3795
3796 ReadingKindTracker ReadingKind(Read_Decl, *this);
3797
3798 // Note that we are loading a declaration record.
3799 Deserializing ADecl(this);
3800
3801 auto Fail = [](const char *what, llvm::Error &&Err) {
3802 llvm::report_fatal_error(Twine("ASTReader::readDeclRecord failed ") + what +
3803 ": " + toString(std::move(Err)));
3804 };
3805
3806 if (llvm::Error JumpFailed = DeclsCursor.JumpToBit(Loc.Offset))
3807 Fail("jumping", std::move(JumpFailed));
3808 ASTRecordReader Record(*this, *Loc.F);
3809 ASTDeclReader Reader(*this, Record, Loc, ID, DeclLoc);
3810 Expected<unsigned> MaybeCode = DeclsCursor.ReadCode();
3811 if (!MaybeCode)
3812 Fail("reading code", MaybeCode.takeError());
3813 unsigned Code = MaybeCode.get();
3814
3815 ASTContext &Context = getContext();
3816 Decl *D = nullptr;
3817 Expected<unsigned> MaybeDeclCode = Record.readRecord(DeclsCursor, Code);
3818 if (!MaybeDeclCode)
3819 llvm::report_fatal_error(
3820 "ASTReader::readDeclRecord failed reading decl code: " +
3821 toString(MaybeDeclCode.takeError()));
3822 switch ((DeclCode)MaybeDeclCode.get()) {
3823 case DECL_CONTEXT_LEXICAL:
3824 case DECL_CONTEXT_VISIBLE:
3825 llvm_unreachable("Record cannot be de-serialized with readDeclRecord")::llvm::llvm_unreachable_internal("Record cannot be de-serialized with readDeclRecord"
, "/build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 3825)
;
3826 case DECL_TYPEDEF:
3827 D = TypedefDecl::CreateDeserialized(Context, ID);
3828 break;
3829 case DECL_TYPEALIAS:
3830 D = TypeAliasDecl::CreateDeserialized(Context, ID);
3831 break;
3832 case DECL_ENUM:
3833 D = EnumDecl::CreateDeserialized(Context, ID);
3834 break;
3835 case DECL_RECORD:
3836 D = RecordDecl::CreateDeserialized(Context, ID);
3837 break;
3838 case DECL_ENUM_CONSTANT:
3839 D = EnumConstantDecl::CreateDeserialized(Context, ID);
3840 break;
3841 case DECL_FUNCTION:
3842 D = FunctionDecl::CreateDeserialized(Context, ID);
3843 break;
3844 case DECL_LINKAGE_SPEC:
3845 D = LinkageSpecDecl::CreateDeserialized(Context, ID);
3846 break;
3847 case DECL_EXPORT:
3848 D = ExportDecl::CreateDeserialized(Context, ID);
3849 break;
3850 case DECL_LABEL:
3851 D = LabelDecl::CreateDeserialized(Context, ID);
3852 break;
3853 case DECL_NAMESPACE:
3854 D = NamespaceDecl::CreateDeserialized(Context, ID);
3855 break;
3856 case DECL_NAMESPACE_ALIAS:
3857 D = NamespaceAliasDecl::CreateDeserialized(Context, ID);
3858 break;
3859 case DECL_USING:
3860 D = UsingDecl::CreateDeserialized(Context, ID);
3861 break;
3862 case DECL_USING_PACK:
3863 D = UsingPackDecl::CreateDeserialized(Context, ID, Record.readInt());
3864 break;
3865 case DECL_USING_SHADOW:
3866 D = UsingShadowDecl::CreateDeserialized(Context, ID);
3867 break;
3868 case DECL_USING_ENUM:
3869 D = UsingEnumDecl::CreateDeserialized(Context, ID);
3870 break;
3871 case DECL_CONSTRUCTOR_USING_SHADOW:
3872 D = ConstructorUsingShadowDecl::CreateDeserialized(Context, ID);
3873 break;
3874 case DECL_USING_DIRECTIVE:
3875 D = UsingDirectiveDecl::CreateDeserialized(Context, ID);
3876 break;
3877 case DECL_UNRESOLVED_USING_VALUE:
3878 D = UnresolvedUsingValueDecl::CreateDeserialized(Context, ID);
3879 break;
3880 case DECL_UNRESOLVED_USING_TYPENAME:
3881 D = UnresolvedUsingTypenameDecl::CreateDeserialized(Context, ID);
3882 break;
3883 case DECL_UNRESOLVED_USING_IF_EXISTS:
3884 D = UnresolvedUsingIfExistsDecl::CreateDeserialized(Context, ID);
3885 break;
3886 case DECL_CXX_RECORD:
3887 D = CXXRecordDecl::CreateDeserialized(Context, ID);
3888 break;
3889 case DECL_CXX_DEDUCTION_GUIDE:
3890 D = CXXDeductionGuideDecl::CreateDeserialized(Context, ID);
3891 break;
3892 case DECL_CXX_METHOD:
3893 D = CXXMethodDecl::CreateDeserialized(Context, ID);
3894 break;
3895 case DECL_CXX_CONSTRUCTOR:
3896 D = CXXConstructorDecl::CreateDeserialized(Context, ID, Record.readInt());
3897 break;
3898 case DECL_CXX_DESTRUCTOR:
3899 D = CXXDestructorDecl::CreateDeserialized(Context, ID);
3900 break;
3901 case DECL_CXX_CONVERSION:
3902 D = CXXConversionDecl::CreateDeserialized(Context, ID);
3903 break;
3904 case DECL_ACCESS_SPEC:
3905 D = AccessSpecDecl::CreateDeserialized(Context, ID);
3906 break;
3907 case DECL_FRIEND:
3908 D = FriendDecl::CreateDeserialized(Context, ID, Record.readInt());
3909 break;
3910 case DECL_FRIEND_TEMPLATE:
3911 D = FriendTemplateDecl::CreateDeserialized(Context, ID);
3912 break;
3913 case DECL_CLASS_TEMPLATE:
3914 D = ClassTemplateDecl::CreateDeserialized(Context, ID);
3915 break;
3916 case DECL_CLASS_TEMPLATE_SPECIALIZATION:
3917 D = ClassTemplateSpecializationDecl::CreateDeserialized(Context, ID);
3918 break;
3919 case DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION:
3920 D = ClassTemplatePartialSpecializationDecl::CreateDeserialized(Context, ID);
3921 break;
3922 case DECL_VAR_TEMPLATE:
3923 D = VarTemplateDecl::CreateDeserialized(Context, ID);
3924 break;
3925 case DECL_VAR_TEMPLATE_SPECIALIZATION:
3926 D = VarTemplateSpecializationDecl::CreateDeserialized(Context, ID);
3927 break;
3928 case DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION:
3929 D = VarTemplatePartialSpecializationDecl::CreateDeserialized(Context, ID);
3930 break;
3931 case DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION:
3932 D = ClassScopeFunctionSpecializationDecl::CreateDeserialized(Context, ID);
3933 break;
3934 case DECL_FUNCTION_TEMPLATE:
3935 D = FunctionTemplateDecl::CreateDeserialized(Context, ID);
3936 break;
3937 case DECL_TEMPLATE_TYPE_PARM: {
3938 bool HasTypeConstraint = Record.readInt();
3939 D = TemplateTypeParmDecl::CreateDeserialized(Context, ID,
3940 HasTypeConstraint);
3941 break;
3942 }
3943 case DECL_NON_TYPE_TEMPLATE_PARM: {
3944 bool HasTypeConstraint = Record.readInt();
3945 D = NonTypeTemplateParmDecl::CreateDeserialized(Context, ID,
3946 HasTypeConstraint);
3947 break;
3948 }
3949 case DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK: {
3950 bool HasTypeConstraint = Record.readInt();
3951 D = NonTypeTemplateParmDecl::CreateDeserialized(Context, ID,
3952 Record.readInt(),
3953 HasTypeConstraint);
3954 break;
3955 }
3956 case DECL_TEMPLATE_TEMPLATE_PARM:
3957 D = TemplateTemplateParmDecl::CreateDeserialized(Context, ID);
3958 break;
3959 case DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK:
3960 D = TemplateTemplateParmDecl::CreateDeserialized(Context, ID,
3961 Record.readInt());
3962 break;
3963 case DECL_TYPE_ALIAS_TEMPLATE:
3964 D = TypeAliasTemplateDecl::CreateDeserialized(Context, ID);
3965 break;
3966 case DECL_CONCEPT:
3967 D = ConceptDecl::CreateDeserialized(Context, ID);
3968 break;
3969 case DECL_REQUIRES_EXPR_BODY:
3970 D = RequiresExprBodyDecl::CreateDeserialized(Context, ID);
3971 break;
3972 case DECL_STATIC_ASSERT:
3973 D = StaticAssertDecl::CreateDeserialized(Context, ID);
3974 break;
3975 case DECL_OBJC_METHOD:
3976 D = ObjCMethodDecl::CreateDeserialized(Context, ID);
3977 break;
3978 case DECL_OBJC_INTERFACE:
3979 D = ObjCInterfaceDecl::CreateDeserialized(Context, ID);
3980 break;
3981 case DECL_OBJC_IVAR:
3982 D = ObjCIvarDecl::CreateDeserialized(Context, ID);
3983 break;
3984 case DECL_OBJC_PROTOCOL:
3985 D = ObjCProtocolDecl::CreateDeserialized(Context, ID);
3986 break;
3987 case DECL_OBJC_AT_DEFS_FIELD:
3988 D = ObjCAtDefsFieldDecl::CreateDeserialized(Context, ID);
3989 break;
3990 case DECL_OBJC_CATEGORY:
3991 D = ObjCCategoryDecl::CreateDeserialized(Context, ID);
3992 break;
3993 case DECL_OBJC_CATEGORY_IMPL:
3994 D = ObjCCategoryImplDecl::CreateDeserialized(Context, ID);
3995 break;
3996 case DECL_OBJC_IMPLEMENTATION:
3997 D = ObjCImplementationDecl::CreateDeserialized(Context, ID);
3998 break;
3999 case DECL_OBJC_COMPATIBLE_ALIAS:
4000 D = ObjCCompatibleAliasDecl::CreateDeserialized(Context, ID);
4001 break;
4002 case DECL_OBJC_PROPERTY:
4003 D = ObjCPropertyDecl::CreateDeserialized(Context, ID);
4004 break;
4005 case DECL_OBJC_PROPERTY_IMPL:
4006 D = ObjCPropertyImplDecl::CreateDeserialized(Context, ID);
4007 break;
4008 case DECL_FIELD:
4009 D = FieldDecl::CreateDeserialized(Context, ID);
4010 break;
4011 case DECL_INDIRECTFIELD:
4012 D = IndirectFieldDecl::CreateDeserialized(Context, ID);
4013 break;
4014 case DECL_VAR:
4015 D = VarDecl::CreateDeserialized(Context, ID);
4016 break;
4017 case DECL_IMPLICIT_PARAM:
4018 D = ImplicitParamDecl::CreateDeserialized(Context, ID);
4019 break;
4020 case DECL_PARM_VAR:
4021 D = ParmVarDecl::CreateDeserialized(Context, ID);
4022 break;
4023 case DECL_DECOMPOSITION:
4024 D = DecompositionDecl::CreateDeserialized(Context, ID, Record.readInt());
4025 break;
4026 case DECL_BINDING:
4027 D = BindingDecl::CreateDeserialized(Context, ID);
4028 break;
4029 case DECL_FILE_SCOPE_ASM:
4030 D = FileScopeAsmDecl::CreateDeserialized(Context, ID);
4031 break;
4032 case DECL_BLOCK:
4033 D = BlockDecl::CreateDeserialized(Context, ID);
4034 break;
4035 case DECL_MS_PROPERTY:
4036 D = MSPropertyDecl::CreateDeserialized(Context, ID);
4037 break;
4038 case DECL_MS_GUID:
4039 D = MSGuidDecl::CreateDeserialized(Context, ID);
4040 break;
4041 case DECL_TEMPLATE_PARAM_OBJECT:
4042 D = TemplateParamObjectDecl::CreateDeserialized(Context, ID);
4043 break;
4044 case DECL_CAPTURED:
4045 D = CapturedDecl::CreateDeserialized(Context, ID, Record.readInt());
4046 break;
4047 case DECL_CXX_BASE_SPECIFIERS:
4048 Error("attempt to read a C++ base-specifier record as a declaration");
4049 return nullptr;
4050 case DECL_CXX_CTOR_INITIALIZERS:
4051 Error("attempt to read a C++ ctor initializer record as a declaration");
4052 return nullptr;
4053 case DECL_IMPORT:
4054 // Note: last entry of the ImportDecl record is the number of stored source
4055 // locations.
4056 D = ImportDecl::CreateDeserialized(Context, ID, Record.back());
4057 break;
4058 case DECL_OMP_THREADPRIVATE: {
4059 Record.skipInts(1);
4060 unsigned NumChildren = Record.readInt();
4061 Record.skipInts(1);
4062 D = OMPThreadPrivateDecl::CreateDeserialized(Context, ID, NumChildren);
4063 break;
4064 }
4065 case DECL_OMP_ALLOCATE: {
4066 unsigned NumClauses = Record.readInt();
4067 unsigned NumVars = Record.readInt();
4068 Record.skipInts(1);
4069 D = OMPAllocateDecl::CreateDeserialized(Context, ID, NumVars, NumClauses);
4070 break;
4071 }
4072 case DECL_OMP_REQUIRES: {
4073 unsigned NumClauses = Record.readInt();
4074 Record.skipInts(2);
4075 D = OMPRequiresDecl::CreateDeserialized(Context, ID, NumClauses);
4076 break;
4077 }
4078 case DECL_OMP_DECLARE_REDUCTION:
4079 D = OMPDeclareReductionDecl::CreateDeserialized(Context, ID);
4080 break;
4081 case DECL_OMP_DECLARE_MAPPER: {
4082 unsigned NumClauses = Record.readInt();
4083 Record.skipInts(2);
4084 D = OMPDeclareMapperDecl::CreateDeserialized(Context, ID, NumClauses);
4085 break;
4086 }
4087 case DECL_OMP_CAPTUREDEXPR:
4088 D = OMPCapturedExprDecl::CreateDeserialized(Context, ID);
4089 break;
4090 case DECL_PRAGMA_COMMENT:
4091 D = PragmaCommentDecl::CreateDeserialized(Context, ID, Record.readInt());
4092 break;
4093 case DECL_PRAGMA_DETECT_MISMATCH:
4094 D = PragmaDetectMismatchDecl::CreateDeserialized(Context, ID,
4095 Record.readInt());
4096 break;
4097 case DECL_EMPTY:
4098 D = EmptyDecl::CreateDeserialized(Context, ID);
4099 break;
4100 case DECL_LIFETIME_EXTENDED_TEMPORARY:
4101 D = LifetimeExtendedTemporaryDecl::CreateDeserialized(Context, ID);
4102 break;
4103 case DECL_OBJC_TYPE_PARAM:
4104 D = ObjCTypeParamDecl::CreateDeserialized(Context, ID);
4105 break;
4106 }
4107
4108 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4108, __extension__ __PRETTY_FUNCTION__))
;
4109 LoadedDecl(Index, D);
4110 // Set the DeclContext before doing any deserialization, to make sure internal
4111 // calls to Decl::getASTContext() by Decl's methods will find the
4112 // TranslationUnitDecl without crashing.
4113 D->setDeclContext(Context.getTranslationUnitDecl());
4114 Reader.Visit(D);
4115
4116 // If this declaration is also a declaration context, get the
4117 // offsets for its tables of lexical and visible declarations.
4118 if (auto *DC = dyn_cast<DeclContext>(D)) {
4119 std::pair<uint64_t, uint64_t> Offsets = Reader.VisitDeclContext(DC);
4120 if (Offsets.first &&
4121 ReadLexicalDeclContextStorage(*Loc.F, DeclsCursor, Offsets.first, DC))
4122 return nullptr;
4123 if (Offsets.second &&
4124 ReadVisibleDeclContextStorage(*Loc.F, DeclsCursor, Offsets.second, ID))
4125 return nullptr;
4126 }
4127 assert(Record.getIdx() == Record.size())(static_cast <bool> (Record.getIdx() == Record.size()) ?
void (0) : __assert_fail ("Record.getIdx() == Record.size()"
, "/build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4127, __extension__ __PRETTY_FUNCTION__))
;
4128
4129 // Load any relevant update records.
4130 PendingUpdateRecords.push_back(
4131 PendingUpdateRecord(ID, D, /*JustLoaded=*/true));
4132
4133 // Load the categories after recursive loading is finished.
4134 if (auto *Class = dyn_cast<ObjCInterfaceDecl>(D))
4135 // If we already have a definition when deserializing the ObjCInterfaceDecl,
4136 // we put the Decl in PendingDefinitions so we can pull the categories here.
4137 if (Class->isThisDeclarationADefinition() ||
4138 PendingDefinitions.count(Class))
4139 loadObjCCategories(ID, Class);
4140
4141 // If we have deserialized a declaration that has a definition the
4142 // AST consumer might need to know about, queue it.
4143 // We don't pass it to the consumer immediately because we may be in recursive
4144 // loading, and some declarations may still be initializing.
4145 PotentiallyInterestingDecls.push_back(
4146 InterestingDecl(D, Reader.hasPendingBody()));
4147
4148 return D;
4149}
4150
4151void ASTReader::PassInterestingDeclsToConsumer() {
4152 assert(Consumer)(static_cast <bool> (Consumer) ? void (0) : __assert_fail
("Consumer", "/build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4152, __extension__ __PRETTY_FUNCTION__))
;
4153
4154 if (PassingDeclsToConsumer)
4155 return;
4156
4157 // Guard variable to avoid recursively redoing the process of passing
4158 // decls to consumer.
4159 SaveAndRestore<bool> GuardPassingDeclsToConsumer(PassingDeclsToConsumer,
4160 true);
4161
4162 // Ensure that we've loaded all potentially-interesting declarations
4163 // that need to be eagerly loaded.
4164 for (auto ID : EagerlyDeserializedDecls)
4165 GetDecl(ID);
4166 EagerlyDeserializedDecls.clear();
4167
4168 while (!PotentiallyInterestingDecls.empty()) {
4169 InterestingDecl D = PotentiallyInterestingDecls.front();
4170 PotentiallyInterestingDecls.pop_front();
4171 if (isConsumerInterestedIn(getContext(), D.getDecl(), D.hasPendingBody()))
4172 PassInterestingDeclToConsumer(D.getDecl());
4173 }
4174}
4175
4176void ASTReader::loadDeclUpdateRecords(PendingUpdateRecord &Record) {
4177 // The declaration may have been modified by files later in the chain.
4178 // If this is the case, read the record containing the updates from each file
4179 // and pass it to ASTDeclReader to make the modifications.
4180 serialization::GlobalDeclID ID = Record.ID;
4181 Decl *D = Record.D;
4182 ProcessingUpdatesRAIIObj ProcessingUpdates(*this);
4183 DeclUpdateOffsetsMap::iterator UpdI = DeclUpdateOffsets.find(ID);
4184
4185 SmallVector<serialization::DeclID, 8> PendingLazySpecializationIDs;
4186
4187 if (UpdI != DeclUpdateOffsets.end()) {
4188 auto UpdateOffsets = std::move(UpdI->second);
4189 DeclUpdateOffsets.erase(UpdI);
4190
4191 // Check if this decl was interesting to the consumer. If we just loaded
4192 // the declaration, then we know it was interesting and we skip the call
4193 // to isConsumerInterestedIn because it is unsafe to call in the
4194 // current ASTReader state.
4195 bool WasInteresting =
4196 Record.JustLoaded || isConsumerInterestedIn(getContext(), D, false);
4197 for (auto &FileAndOffset : UpdateOffsets) {
4198 ModuleFile *F = FileAndOffset.first;
4199 uint64_t Offset = FileAndOffset.second;
4200 llvm::BitstreamCursor &Cursor = F->DeclsCursor;
4201 SavedStreamPosition SavedPosition(Cursor);
4202 if (llvm::Error JumpFailed = Cursor.JumpToBit(Offset))
4203 // FIXME don't do a fatal error.
4204 llvm::report_fatal_error(
4205 "ASTReader::loadDeclUpdateRecords failed jumping: " +
4206 toString(std::move(JumpFailed)));
4207 Expected<unsigned> MaybeCode = Cursor.ReadCode();
4208 if (!MaybeCode)
4209 llvm::report_fatal_error(
4210 "ASTReader::loadDeclUpdateRecords failed reading code: " +
4211 toString(MaybeCode.takeError()));
4212 unsigned Code = MaybeCode.get();
4213 ASTRecordReader Record(*this, *F);
4214 if (Expected<unsigned> MaybeRecCode = Record.readRecord(Cursor, Code))
4215 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4216, __extension__ __PRETTY_FUNCTION__))
4216 "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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4216, __extension__ __PRETTY_FUNCTION__))
;
4217 else
4218 llvm::report_fatal_error(
4219 "ASTReader::loadDeclUpdateRecords failed reading rec code: " +
4220 toString(MaybeCode.takeError()));
4221
4222 ASTDeclReader Reader(*this, Record, RecordLocation(F, Offset), ID,
4223 SourceLocation());
4224 Reader.UpdateDecl(D, PendingLazySpecializationIDs);
4225
4226 // We might have made this declaration interesting. If so, remember that
4227 // we need to hand it off to the consumer.
4228 if (!WasInteresting &&
4229 isConsumerInterestedIn(getContext(), D, Reader.hasPendingBody())) {
4230 PotentiallyInterestingDecls.push_back(
4231 InterestingDecl(D, Reader.hasPendingBody()));
4232 WasInteresting = true;
4233 }
4234 }
4235 }
4236 // Add the lazy specializations to the template.
4237 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4239, __extension__ __PRETTY_FUNCTION__))
4238 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4239, __extension__ __PRETTY_FUNCTION__))
4239 "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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4239, __extension__ __PRETTY_FUNCTION__))
;
4240 if (auto *CTD = dyn_cast<ClassTemplateDecl>(D))
4241 ASTDeclReader::AddLazySpecializations(CTD, PendingLazySpecializationIDs);
4242 else if (auto *FTD = dyn_cast<FunctionTemplateDecl>(D))
4243 ASTDeclReader::AddLazySpecializations(FTD, PendingLazySpecializationIDs);
4244 else if (auto *VTD = dyn_cast<VarTemplateDecl>(D))
4245 ASTDeclReader::AddLazySpecializations(VTD, PendingLazySpecializationIDs);
4246 PendingLazySpecializationIDs.clear();
4247
4248 // Load the pending visible updates for this decl context, if it has any.
4249 auto I = PendingVisibleUpdates.find(ID);
4250 if (I != PendingVisibleUpdates.end()) {
4251 auto VisibleUpdates = std::move(I->second);
4252 PendingVisibleUpdates.erase(I);
4253
4254 auto *DC = cast<DeclContext>(D)->getPrimaryContext();
4255 for (const auto &Update : VisibleUpdates)
4256 Lookups[DC].Table.add(
4257 Update.Mod, Update.Data,
4258 reader::ASTDeclContextNameLookupTrait(*this, *Update.Mod));
4259 DC->setHasExternalVisibleStorage(true);
4260 }
4261}
4262
4263void ASTReader::loadPendingDeclChain(Decl *FirstLocal, uint64_t LocalOffset) {
4264 // Attach FirstLocal to the end of the decl chain.
4265 Decl *CanonDecl = FirstLocal->getCanonicalDecl();
4266 if (FirstLocal != CanonDecl) {
4267 Decl *PrevMostRecent = ASTDeclReader::getMostRecentDecl(CanonDecl);
4268 ASTDeclReader::attachPreviousDecl(
4269 *this, FirstLocal, PrevMostRecent ? PrevMostRecent : CanonDecl,
4270 CanonDecl);
4271 }
4272
4273 if (!LocalOffset) {
4274 ASTDeclReader::attachLatestDecl(CanonDecl, FirstLocal);
4275 return;
4276 }
4277
4278 // Load the list of other redeclarations from this module file.
4279 ModuleFile *M = getOwningModuleFile(FirstLocal);
4280 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4280, __extension__ __PRETTY_FUNCTION__))
;
4281
4282 llvm::BitstreamCursor &Cursor = M->DeclsCursor;
4283 SavedStreamPosition SavedPosition(Cursor);
4284 if (llvm::Error JumpFailed = Cursor.JumpToBit(LocalOffset))
4285 llvm::report_fatal_error(
4286 "ASTReader::loadPendingDeclChain failed jumping: " +
4287 toString(std::move(JumpFailed)));
4288
4289 RecordData Record;
4290 Expected<unsigned> MaybeCode = Cursor.ReadCode();
4291 if (!MaybeCode)
4292 llvm::report_fatal_error(
4293 "ASTReader::loadPendingDeclChain failed reading code: " +
4294 toString(MaybeCode.takeError()));
4295 unsigned Code = MaybeCode.get();
4296 if (Expected<unsigned> MaybeRecCode = Cursor.readRecord(Code, Record))
4297 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4298, __extension__ __PRETTY_FUNCTION__))
4298 "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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4298, __extension__ __PRETTY_FUNCTION__))
;
4299 else
4300 llvm::report_fatal_error(
4301 "ASTReader::loadPendingDeclChain failed reading rec code: " +
4302 toString(MaybeCode.takeError()));
4303
4304 // FIXME: We have several different dispatches on decl kind here; maybe
4305 // we should instead generate one loop per kind and dispatch up-front?
4306 Decl *MostRecent = FirstLocal;
4307 for (unsigned I = 0, N = Record.size(); I != N; ++I) {
4308 auto *D = GetLocalDecl(*M, Record[N - I - 1]);
4309 ASTDeclReader::attachPreviousDecl(*this, D, MostRecent, CanonDecl);
4310 MostRecent = D;
4311 }
4312 ASTDeclReader::attachLatestDecl(CanonDecl, MostRecent);
4313}
4314
4315namespace {
4316
4317 /// Given an ObjC interface, goes through the modules and links to the
4318 /// interface all the categories for it.
4319 class ObjCCategoriesVisitor {
4320 ASTReader &Reader;
4321 ObjCInterfaceDecl *Interface;
4322 llvm::SmallPtrSetImpl<ObjCCategoryDecl *> &Deserialized;
4323 ObjCCategoryDecl *Tail = nullptr;
4324 llvm::DenseMap<DeclarationName, ObjCCategoryDecl *> NameCategoryMap;
4325 serialization::GlobalDeclID InterfaceID;
4326 unsigned PreviousGeneration;
4327
4328 void add(ObjCCategoryDecl *Cat) {
4329 // Only process each category once.
4330 if (!Deserialized.erase(Cat))
4331 return;
4332
4333 // Check for duplicate categories.
4334 if (Cat->getDeclName()) {
4335 ObjCCategoryDecl *&Existing = NameCategoryMap[Cat->getDeclName()];
4336 if (Existing &&
4337 Reader.getOwningModuleFile(Existing)
4338 != Reader.getOwningModuleFile(Cat)) {
4339 // FIXME: We should not warn for duplicates in diamond:
4340 //
4341 // MT //
4342 // / \ //
4343 // ML MR //
4344 // \ / //
4345 // MB //
4346 //
4347 // If there are duplicates in ML/MR, there will be warning when
4348 // creating MB *and* when importing MB. We should not warn when
4349 // importing.
4350 Reader.Diag(Cat->getLocation(), diag::warn_dup_category_def)
4351 << Interface->getDeclName() << Cat->getDeclName();
4352 Reader.Diag(Existing->getLocation(), diag::note_previous_definition);
4353 } else if (!Existing) {
4354 // Record this category.
4355 Existing = Cat;
4356 }
4357 }
4358
4359 // Add this category to the end of the chain.
4360 if (Tail)
4361 ASTDeclReader::setNextObjCCategory(Tail, Cat);
4362 else
4363 Interface->setCategoryListRaw(Cat);
4364 Tail = Cat;
4365 }
4366
4367 public:
4368 ObjCCategoriesVisitor(ASTReader &Reader,
4369 ObjCInterfaceDecl *Interface,
4370 llvm::SmallPtrSetImpl<ObjCCategoryDecl *> &Deserialized,
4371 serialization::GlobalDeclID InterfaceID,
4372 unsigned PreviousGeneration)
4373 : Reader(Reader), Interface(Interface), Deserialized(Deserialized),
4374 InterfaceID(InterfaceID), PreviousGeneration(PreviousGeneration) {
4375 // Populate the name -> category map with the set of known categories.
4376 for (auto *Cat : Interface->known_categories()) {
4377 if (Cat->getDeclName())
4378 NameCategoryMap[Cat->getDeclName()] = Cat;
4379
4380 // Keep track of the tail of the category list.
4381 Tail = Cat;
4382 }
4383 }
4384
4385 bool operator()(ModuleFile &M) {
4386 // If we've loaded all of the category information we care about from
4387 // this module file, we're done.
4388 if (M.Generation <= PreviousGeneration)
4389 return true;
4390
4391 // Map global ID of the definition down to the local ID used in this
4392 // module file. If there is no such mapping, we'll find nothing here
4393 // (or in any module it imports).
4394 DeclID LocalID = Reader.mapGlobalIDToModuleFileGlobalID(M, InterfaceID);
4395 if (!LocalID)
4396 return true;
4397
4398 // Perform a binary search to find the local redeclarations for this
4399 // declaration (if any).
4400 const ObjCCategoriesInfo Compare = { LocalID, 0 };
4401 const ObjCCategoriesInfo *Result
4402 = std::lower_bound(M.ObjCCategoriesMap,
4403 M.ObjCCategoriesMap + M.LocalNumObjCCategoriesInMap,
4404 Compare);
4405 if (Result == M.ObjCCategoriesMap + M.LocalNumObjCCategoriesInMap ||
4406 Result->DefinitionID != LocalID) {
4407 // We didn't find anything. If the class definition is in this module
4408 // file, then the module files it depends on cannot have any categories,
4409 // so suppress further lookup.
4410 return Reader.isDeclIDFromModule(InterfaceID, M);
4411 }
4412
4413 // We found something. Dig out all of the categories.
4414 unsigned Offset = Result->Offset;
4415 unsigned N = M.ObjCCategories[Offset];
4416 M.ObjCCategories[Offset++] = 0; // Don't try to deserialize again
4417 for (unsigned I = 0; I != N; ++I)
4418 add(cast_or_null<ObjCCategoryDecl>(
4419 Reader.GetLocalDecl(M, M.ObjCCategories[Offset++])));
4420 return true;
4421 }
4422 };
4423
4424} // namespace
4425
4426void ASTReader::loadObjCCategories(serialization::GlobalDeclID ID,
4427 ObjCInterfaceDecl *D,
4428 unsigned PreviousGeneration) {
4429 ObjCCategoriesVisitor Visitor(*this, D, CategoriesDeserialized, ID,
4430 PreviousGeneration);
4431 ModuleMgr.visit(Visitor);
4432}
4433
4434template<typename DeclT, typename Fn>
4435static void forAllLaterRedecls(DeclT *D, Fn F) {
4436 F(D);
4437
4438 // Check whether we've already merged D into its redeclaration chain.
4439 // MostRecent may or may not be nullptr if D has not been merged. If
4440 // not, walk the merged redecl chain and see if it's there.
4441 auto *MostRecent = D->getMostRecentDecl();
4442 bool Found = false;
4443 for (auto *Redecl = MostRecent; Redecl && !Found;
4444 Redecl = Redecl->getPreviousDecl())
4445 Found = (Redecl == D);
4446
4447 // If this declaration is merged, apply the functor to all later decls.
4448 if (Found) {
4449 for (auto *Redecl = MostRecent; Redecl != D;
4450 Redecl = Redecl->getPreviousDecl())
4451 F(Redecl);
4452 }
4453}
4454
4455void ASTDeclReader::UpdateDecl(Decl *D,
4456 llvm::SmallVectorImpl<serialization::DeclID> &PendingLazySpecializationIDs) {
4457 while (Record.getIdx() < Record.size()) {
4458 switch ((DeclUpdateKind)Record.readInt()) {
4459 case UPD_CXX_ADDED_IMPLICIT_MEMBER: {
4460 auto *RD = cast<CXXRecordDecl>(D);
4461 // FIXME: If we also have an update record for instantiating the
4462 // definition of D, we need that to happen before we get here.
4463 Decl *MD = Record.readDecl();
4464 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4464, __extension__ __PRETTY_FUNCTION__))
;
4465 // FIXME: We should call addHiddenDecl instead, to add the member
4466 // to its DeclContext.
4467 RD->addedMember(MD);
4468 break;
4469 }
4470
4471 case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
4472 // It will be added to the template's lazy specialization set.
4473 PendingLazySpecializationIDs.push_back(readDeclID());
4474 break;
4475
4476 case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE: {
4477 auto *Anon = readDeclAs<NamespaceDecl>();
4478
4479 // Each module has its own anonymous namespace, which is disjoint from
4480 // any other module's anonymous namespaces, so don't attach the anonymous
4481 // namespace at all.
4482 if (!Record.isModule()) {
4483 if (auto *TU = dyn_cast<TranslationUnitDecl>(D))
4484 TU->setAnonymousNamespace(Anon);
4485 else
4486 cast<NamespaceDecl>(D)->setAnonymousNamespace(Anon);
4487 }
4488 break;
4489 }
4490
4491 case UPD_CXX_ADDED_VAR_DEFINITION: {
4492 auto *VD = cast<VarDecl>(D);
4493 VD->NonParmVarDeclBits.IsInline = Record.readInt();
4494 VD->NonParmVarDeclBits.IsInlineSpecified = Record.readInt();
4495 uint64_t Val = Record.readInt();
4496 if (Val && !VD->getInit()) {
4497 VD->setInit(Record.readExpr());
4498 if (Val != 1) {
4499 EvaluatedStmt *Eval = VD->ensureEvaluatedStmt();
4500 Eval->HasConstantInitialization = (Val & 2) != 0;
4501 Eval->HasConstantDestruction = (Val & 4) != 0;
4502 }
4503 }
4504 break;
4505 }
4506
4507 case UPD_CXX_POINT_OF_INSTANTIATION: {
4508 SourceLocation POI = Record.readSourceLocation();
4509 if (auto *VTSD = dyn_cast<VarTemplateSpecializationDecl>(D)) {
4510 VTSD->setPointOfInstantiation(POI);
4511 } else if (auto *VD = dyn_cast<VarDecl>(D)) {
4512 VD->getMemberSpecializationInfo()->setPointOfInstantiation(POI);
4513 } else {
4514 auto *FD = cast<FunctionDecl>(D);
4515 if (auto *FTSInfo = FD->TemplateOrSpecialization
4516 .dyn_cast<FunctionTemplateSpecializationInfo *>())
4517 FTSInfo->setPointOfInstantiation(POI);
4518 else
4519 FD->TemplateOrSpecialization.get<MemberSpecializationInfo *>()
4520 ->setPointOfInstantiation(POI);
4521 }
4522 break;
4523 }
4524
4525 case UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT: {
4526 auto *Param = cast<ParmVarDecl>(D);
4527
4528 // We have to read the default argument regardless of whether we use it
4529 // so that hypothetical further update records aren't messed up.
4530 // TODO: Add a function to skip over the next expr record.
4531 auto *DefaultArg = Record.readExpr();
4532
4533 // Only apply the update if the parameter still has an uninstantiated
4534 // default argument.
4535 if (Param->hasUninstantiatedDefaultArg())
4536 Param->setDefaultArg(DefaultArg);
4537 break;
4538 }
4539
4540 case UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER: {
4541 auto *FD = cast<FieldDecl>(D);
4542 auto *DefaultInit = Record.readExpr();
4543
4544 // Only apply the update if the field still has an uninstantiated
4545 // default member initializer.
4546 if (FD->hasInClassInitializer() && !FD->getInClassInitializer()) {
4547 if (DefaultInit)
4548 FD->setInClassInitializer(DefaultInit);
4549 else
4550 // Instantiation failed. We can get here if we serialized an AST for
4551 // an invalid program.
4552 FD->removeInClassInitializer();
4553 }
4554 break;
4555 }
4556
4557 case UPD_CXX_ADDED_FUNCTION_DEFINITION: {
4558 auto *FD = cast<FunctionDecl>(D);
4559 if (Reader.PendingBodies[FD]) {
4560 // FIXME: Maybe check for ODR violations.
4561 // It's safe to stop now because this update record is always last.
4562 return;
4563 }
4564
4565 if (Record.readInt()) {
4566 // Maintain AST consistency: any later redeclarations of this function
4567 // are inline if this one is. (We might have merged another declaration
4568 // into this one.)
4569 forAllLaterRedecls(FD, [](FunctionDecl *FD) {
4570 FD->setImplicitlyInline();
4571 });
4572 }
4573 FD->setInnerLocStart(readSourceLocation());
4574 ReadFunctionDefinition(FD);
4575 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-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4575, __extension__ __PRETTY_FUNCTION__))
;
4576 break;
4577 }
4578
4579 case UPD_CXX_INSTANTIATED_CLASS_DEFINITION: {
4580 auto *RD = cast<CXXRecordDecl>(D);
4581 auto *OldDD = RD->getCanonicalDecl()->DefinitionData;
4582 bool HadRealDefinition =
4583 OldDD && (OldDD->Definition != RD ||
4584 !Reader.PendingFakeDefinitionData.count(OldDD));
4585 RD->setParamDestroyedInCallee(Record.readInt());
4586 RD->setArgPassingRestrictions(
4587 (RecordDecl::ArgPassingKind)Record.readInt());
4588 ReadCXXRecordDefinition(RD, /*Update*/true);
4589
4590 // Visible update is handled separately.
4591 uint64_t LexicalOffset = ReadLocalOffset();
4592 if (!HadRealDefinition && LexicalOffset) {
4593 Record.readLexicalDeclContextStorage(LexicalOffset, RD);
4594 Reader.PendingFakeDefinitionData.erase(OldDD);
4595 }
4596
4597 auto TSK = (TemplateSpecializationKind)Record.readInt();
4598 SourceLocation POI = readSourceLocation();
4599 if (MemberSpecializationInfo *MSInfo =
4600 RD->getMemberSpecializationInfo()) {
4601 MSInfo->setTemplateSpecializationKind(TSK);
4602 MSInfo->setPointOfInstantiation(POI);
4603 } else {
4604 auto *Spec = cast<ClassTemplateSpecializationDecl>(RD);
4605 Spec->setTemplateSpecializationKind(TSK);
4606 Spec->setPointOfInstantiation(POI);
4607
4608 if (Record.readInt()) {
4609 auto *PartialSpec =
4610 readDeclAs<ClassTemplatePartialSpecializationDecl>();
4611 SmallVector<TemplateArgument, 8> TemplArgs;
4612 Record.readTemplateArgumentList(TemplArgs);
4613 auto *TemplArgList = TemplateArgumentList::CreateCopy(
4614 Reader.getContext(), TemplArgs);
4615
4616 // FIXME: If we already have a partial specialization set,
4617 // check that it matches.
4618 if (!Spec->getSpecializedTemplateOrPartial()
4619 .is<ClassTemplatePartialSpecializationDecl *>())
4620 Spec->setInstantiationOf(PartialSpec, TemplArgList);
4621 }
4622 }
4623
4624 RD->setTagKind((TagTypeKind)Record.readInt());
4625 RD->setLocation(readSourceLocation());
4626 RD->setLocStart(readSourceLocation());
4627 RD->setBraceRange(readSourceRange());
4628
4629 if (Record.readInt()) {
4630 AttrVec Attrs;
4631 Record.readAttributes(Attrs);
4632 // If the declaration already has attributes, we assume that some other
4633 // AST file already loaded them.
4634 if (!D->hasAttrs())
4635 D->setAttrsImpl(Attrs, Reader.getContext());
4636 }
4637 break;
4638 }
4639
4640 case UPD_CXX_RESOLVED_DTOR_DELETE: {
4641 // Set the 'operator delete' directly to avoid emitting another update
4642 // record.
4643 auto *Del = readDeclAs<FunctionDecl>();
4644 auto *First = cast<CXXDestructorDecl>(D->getCanonicalDecl());
4645 auto *ThisArg = Record.readExpr();
4646 // FIXME: Check consistency if we have an old and new operator delete.
4647 if (!First->OperatorDelete) {
4648 First->OperatorDelete = Del;
4649 First->OperatorDeleteThisArg = ThisArg;
4650 }
4651 break;
4652 }
4653
4654 case UPD_CXX_RESOLVED_EXCEPTION_SPEC: {
4655 SmallVector<QualType, 8> ExceptionStorage;
4656 auto ESI = Record.readExceptionSpecInfo(ExceptionStorage);
4657
4658 // Update this declaration's exception specification, if needed.
4659 auto *FD = cast<FunctionDecl>(D);
4660 auto *FPT = FD->getType()->castAs<FunctionProtoType>();
4661 // FIXME: If the exception specification is already present, check that it
4662 // matches.
4663 if (isUnresolvedExceptionSpec(FPT->getExceptionSpecType())) {
4664 FD->setType(Reader.getContext().getFunctionType(
4665 FPT->getReturnType(), FPT->getParamTypes(),
4666 FPT->getExtProtoInfo().withExceptionSpec(ESI)));
4667
4668 // When we get to the end of deserializing, see if there are other decls
4669 // that we need to propagate this exception specification onto.
4670 Reader.PendingExceptionSpecUpdates.insert(
4671 std::make_pair(FD->getCanonicalDecl(), FD));
4672 }
4673 break;
4674 }
4675
4676 case UPD_CXX_DEDUCED_RETURN_TYPE: {
4677 auto *FD = cast<FunctionDecl>(D);
4678 QualType DeducedResultType = Record.readType();
4679 Reader.PendingDeducedTypeUpdates.insert(
4680 {FD->getCanonicalDecl(), DeducedResultType});
4681 break;
4682 }
4683
4684 case UPD_DECL_MARKED_USED:
4685 // Maintain AST consistency: any later redeclarations are used too.
4686 D->markUsed(Reader.getContext());
4687 break;
4688
4689 case UPD_MANGLING_NUMBER:
4690 Reader.getContext().setManglingNumber(cast<NamedDecl>(D),
4691 Record.readInt());
4692 break;
4693
4694 case UPD_STATIC_LOCAL_NUMBER:
4695 Reader.getContext().setStaticLocalNumber(cast<VarDecl>(D),
4696 Record.readInt());
4697 break;
4698
4699 case UPD_DECL_MARKED_OPENMP_THREADPRIVATE:
4700 D->addAttr(OMPThreadPrivateDeclAttr::CreateImplicit(
4701 Reader.getContext(), readSourceRange(),
4702 AttributeCommonInfo::AS_Pragma));
4703 break;
4704
4705 case UPD_DECL_MARKED_OPENMP_ALLOCATE: {
4706 auto AllocatorKind =
4707 static_cast<OMPAllocateDeclAttr::AllocatorTypeTy>(Record.readInt());
4708 Expr *Allocator = Record.readExpr();
4709 SourceRange SR = readSourceRange();
4710 D->addAttr(OMPAllocateDeclAttr::CreateImplicit(
4711 Reader.getContext(), AllocatorKind, Allocator, SR,
4712 AttributeCommonInfo::AS_Pragma));
4713 break;
4714 }
4715
4716 case UPD_DECL_EXPORTED: {
4717 unsigned SubmoduleID = readSubmoduleID();
4718 auto *Exported = cast<NamedDecl>(D);
4719 Module *Owner = SubmoduleID ? Reader.getSubmodule(SubmoduleID) : nullptr;
4720 Reader.getContext().mergeDefinitionIntoModule(Exported, Owner);
4721 Reader.PendingMergedDefinitionsToDeduplicate.insert(Exported);
4722 break;
4723 }
4724
4725 case UPD_DECL_MARKED_OPENMP_DECLARETARGET: {
4726 auto MapType = Record.readEnum<OMPDeclareTargetDeclAttr::MapTypeTy>();
4727 auto DevType = Record.readEnum<OMPDeclareTargetDeclAttr::DevTypeTy>();
4728 unsigned Level = Record.readInt();
4729 D->addAttr(OMPDeclareTargetDeclAttr::CreateImplicit(
4730 Reader.getContext(), MapType, DevType, Level, readSourceRange(),
4731 AttributeCommonInfo::AS_Pragma));
4732 break;
4733 }
4734
4735 case UPD_ADDED_ATTR_TO_RECORD:
4736 AttrVec Attrs;
4737 Record.readAttributes(Attrs);
4738 assert(Attrs.size() == 1)(static_cast <bool> (Attrs.size() == 1) ? void (0) : __assert_fail
("Attrs.size() == 1", "/build/llvm-toolchain-snapshot-13~++20210722111111+b115c038d2d4/clang/lib/Serialization/ASTReaderDecl.cpp"
, 4738, __extension__ __PRETTY_FUNCTION__))
;
4739 D->addAttr(Attrs[0]);
4740 break;
4741 }
4742 }
4743}