Bug Summary

File:clang/lib/AST/MicrosoftMangle.cpp
Warning:line 2210, column 24
Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name MicrosoftMangle.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 -mthread-model posix -mframe-pointer=none -relaxed-aliasing -fmath-errno -fno-rounding-math -masm-verbose -mconstructor-aliases -munwind-tables -target-cpu x86-64 -dwarf-column-info -fno-split-dwarf-inlining -debugger-tuning=gdb -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-10/lib/clang/10.0.0 -D CLANG_VENDOR="Debian " -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/build-llvm/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST -I /build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/include -I /build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/build-llvm/include -I /build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-10/lib/clang/10.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++14 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/build-llvm/tools/clang/lib/AST -fdebug-prefix-map=/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd=. -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -o /tmp/scan-build-2020-01-13-084841-49055-1 -x c++ /build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp

/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp

1//===--- MicrosoftMangle.cpp - Microsoft Visual C++ Name Mangling ---------===//
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 provides C++ name mangling targeting the Microsoft Visual C++ ABI.
10//
11//===----------------------------------------------------------------------===//
12
13#include "clang/AST/Mangle.h"
14#include "clang/AST/ASTContext.h"
15#include "clang/AST/Attr.h"
16#include "clang/AST/CXXInheritance.h"
17#include "clang/AST/CharUnits.h"
18#include "clang/AST/Decl.h"
19#include "clang/AST/DeclCXX.h"
20#include "clang/AST/DeclObjC.h"
21#include "clang/AST/DeclOpenMP.h"
22#include "clang/AST/DeclTemplate.h"
23#include "clang/AST/Expr.h"
24#include "clang/AST/ExprCXX.h"
25#include "clang/AST/VTableBuilder.h"
26#include "clang/Basic/ABI.h"
27#include "clang/Basic/DiagnosticOptions.h"
28#include "clang/Basic/TargetInfo.h"
29#include "llvm/ADT/StringExtras.h"
30#include "llvm/Support/CRC.h"
31#include "llvm/Support/MD5.h"
32#include "llvm/Support/MathExtras.h"
33#include "llvm/Support/StringSaver.h"
34#include "llvm/Support/xxhash.h"
35
36using namespace clang;
37
38namespace {
39
40struct msvc_hashing_ostream : public llvm::raw_svector_ostream {
41 raw_ostream &OS;
42 llvm::SmallString<64> Buffer;
43
44 msvc_hashing_ostream(raw_ostream &OS)
45 : llvm::raw_svector_ostream(Buffer), OS(OS) {}
46 ~msvc_hashing_ostream() override {
47 StringRef MangledName = str();
48 bool StartsWithEscape = MangledName.startswith("\01");
49 if (StartsWithEscape)
50 MangledName = MangledName.drop_front(1);
51 if (MangledName.size() <= 4096) {
52 OS << str();
53 return;
54 }
55
56 llvm::MD5 Hasher;
57 llvm::MD5::MD5Result Hash;
58 Hasher.update(MangledName);
59 Hasher.final(Hash);
60
61 SmallString<32> HexString;
62 llvm::MD5::stringifyResult(Hash, HexString);
63
64 if (StartsWithEscape)
65 OS << '\01';
66 OS << "??@" << HexString << '@';
67 }
68};
69
70static const DeclContext *
71getLambdaDefaultArgumentDeclContext(const Decl *D) {
72 if (const auto *RD = dyn_cast<CXXRecordDecl>(D))
73 if (RD->isLambda())
74 if (const auto *Parm =
75 dyn_cast_or_null<ParmVarDecl>(RD->getLambdaContextDecl()))
76 return Parm->getDeclContext();
77 return nullptr;
78}
79
80/// Retrieve the declaration context that should be used when mangling
81/// the given declaration.
82static const DeclContext *getEffectiveDeclContext(const Decl *D) {
83 // The ABI assumes that lambda closure types that occur within
84 // default arguments live in the context of the function. However, due to
85 // the way in which Clang parses and creates function declarations, this is
86 // not the case: the lambda closure type ends up living in the context
87 // where the function itself resides, because the function declaration itself
88 // had not yet been created. Fix the context here.
89 if (const auto *LDADC = getLambdaDefaultArgumentDeclContext(D))
90 return LDADC;
91
92 // Perform the same check for block literals.
93 if (const BlockDecl *BD = dyn_cast<BlockDecl>(D)) {
94 if (ParmVarDecl *ContextParam =
95 dyn_cast_or_null<ParmVarDecl>(BD->getBlockManglingContextDecl()))
96 return ContextParam->getDeclContext();
97 }
98
99 const DeclContext *DC = D->getDeclContext();
100 if (isa<CapturedDecl>(DC) || isa<OMPDeclareReductionDecl>(DC) ||
101 isa<OMPDeclareMapperDecl>(DC)) {
102 return getEffectiveDeclContext(cast<Decl>(DC));
103 }
104
105 return DC->getRedeclContext();
106}
107
108static const DeclContext *getEffectiveParentContext(const DeclContext *DC) {
109 return getEffectiveDeclContext(cast<Decl>(DC));
110}
111
112static const FunctionDecl *getStructor(const NamedDecl *ND) {
113 if (const auto *FTD = dyn_cast<FunctionTemplateDecl>(ND))
114 return FTD->getTemplatedDecl()->getCanonicalDecl();
115
116 const auto *FD = cast<FunctionDecl>(ND);
117 if (const auto *FTD = FD->getPrimaryTemplate())
118 return FTD->getTemplatedDecl()->getCanonicalDecl();
119
120 return FD->getCanonicalDecl();
121}
122
123/// MicrosoftMangleContextImpl - Overrides the default MangleContext for the
124/// Microsoft Visual C++ ABI.
125class MicrosoftMangleContextImpl : public MicrosoftMangleContext {
126 typedef std::pair<const DeclContext *, IdentifierInfo *> DiscriminatorKeyTy;
127 llvm::DenseMap<DiscriminatorKeyTy, unsigned> Discriminator;
128 llvm::DenseMap<const NamedDecl *, unsigned> Uniquifier;
129 llvm::DenseMap<const CXXRecordDecl *, unsigned> LambdaIds;
130 llvm::DenseMap<const NamedDecl *, unsigned> SEHFilterIds;
131 llvm::DenseMap<const NamedDecl *, unsigned> SEHFinallyIds;
132 SmallString<16> AnonymousNamespaceHash;
133
134public:
135 MicrosoftMangleContextImpl(ASTContext &Context, DiagnosticsEngine &Diags);
136 bool shouldMangleCXXName(const NamedDecl *D) override;
137 bool shouldMangleStringLiteral(const StringLiteral *SL) override;
138 void mangleCXXName(const NamedDecl *D, raw_ostream &Out) override;
139 void mangleVirtualMemPtrThunk(const CXXMethodDecl *MD,
140 const MethodVFTableLocation &ML,
141 raw_ostream &Out) override;
142 void mangleThunk(const CXXMethodDecl *MD, const ThunkInfo &Thunk,
143 raw_ostream &) override;
144 void mangleCXXDtorThunk(const CXXDestructorDecl *DD, CXXDtorType Type,
145 const ThisAdjustment &ThisAdjustment,
146 raw_ostream &) override;
147 void mangleCXXVFTable(const CXXRecordDecl *Derived,
148 ArrayRef<const CXXRecordDecl *> BasePath,
149 raw_ostream &Out) override;
150 void mangleCXXVBTable(const CXXRecordDecl *Derived,
151 ArrayRef<const CXXRecordDecl *> BasePath,
152 raw_ostream &Out) override;
153 void mangleCXXVirtualDisplacementMap(const CXXRecordDecl *SrcRD,
154 const CXXRecordDecl *DstRD,
155 raw_ostream &Out) override;
156 void mangleCXXThrowInfo(QualType T, bool IsConst, bool IsVolatile,
157 bool IsUnaligned, uint32_t NumEntries,
158 raw_ostream &Out) override;
159 void mangleCXXCatchableTypeArray(QualType T, uint32_t NumEntries,
160 raw_ostream &Out) override;
161 void mangleCXXCatchableType(QualType T, const CXXConstructorDecl *CD,
162 CXXCtorType CT, uint32_t Size, uint32_t NVOffset,
163 int32_t VBPtrOffset, uint32_t VBIndex,
164 raw_ostream &Out) override;
165 void mangleCXXRTTI(QualType T, raw_ostream &Out) override;
166 void mangleCXXRTTIName(QualType T, raw_ostream &Out) override;
167 void mangleCXXRTTIBaseClassDescriptor(const CXXRecordDecl *Derived,
168 uint32_t NVOffset, int32_t VBPtrOffset,
169 uint32_t VBTableOffset, uint32_t Flags,
170 raw_ostream &Out) override;
171 void mangleCXXRTTIBaseClassArray(const CXXRecordDecl *Derived,
172 raw_ostream &Out) override;
173 void mangleCXXRTTIClassHierarchyDescriptor(const CXXRecordDecl *Derived,
174 raw_ostream &Out) override;
175 void
176 mangleCXXRTTICompleteObjectLocator(const CXXRecordDecl *Derived,
177 ArrayRef<const CXXRecordDecl *> BasePath,
178 raw_ostream &Out) override;
179 void mangleTypeName(QualType T, raw_ostream &) override;
180 void mangleCXXCtor(const CXXConstructorDecl *D, CXXCtorType Type,
181 raw_ostream &) override;
182 void mangleCXXDtor(const CXXDestructorDecl *D, CXXDtorType Type,
183 raw_ostream &) override;
184 void mangleReferenceTemporary(const VarDecl *, unsigned ManglingNumber,
185 raw_ostream &) override;
186 void mangleStaticGuardVariable(const VarDecl *D, raw_ostream &Out) override;
187 void mangleThreadSafeStaticGuardVariable(const VarDecl *D, unsigned GuardNum,
188 raw_ostream &Out) override;
189 void mangleDynamicInitializer(const VarDecl *D, raw_ostream &Out) override;
190 void mangleDynamicAtExitDestructor(const VarDecl *D,
191 raw_ostream &Out) override;
192 void mangleSEHFilterExpression(const NamedDecl *EnclosingDecl,
193 raw_ostream &Out) override;
194 void mangleSEHFinallyBlock(const NamedDecl *EnclosingDecl,
195 raw_ostream &Out) override;
196 void mangleStringLiteral(const StringLiteral *SL, raw_ostream &Out) override;
197 bool getNextDiscriminator(const NamedDecl *ND, unsigned &disc) {
198 const DeclContext *DC = getEffectiveDeclContext(ND);
199 if (!DC->isFunctionOrMethod())
200 return false;
201
202 // Lambda closure types are already numbered, give out a phony number so
203 // that they demangle nicely.
204 if (const auto *RD = dyn_cast<CXXRecordDecl>(ND)) {
205 if (RD->isLambda()) {
206 disc = 1;
207 return true;
208 }
209 }
210
211 // Use the canonical number for externally visible decls.
212 if (ND->isExternallyVisible()) {
213 disc = getASTContext().getManglingNumber(ND);
214 return true;
215 }
216
217 // Anonymous tags are already numbered.
218 if (const TagDecl *Tag = dyn_cast<TagDecl>(ND)) {
219 if (!Tag->hasNameForLinkage() &&
220 !getASTContext().getDeclaratorForUnnamedTagDecl(Tag) &&
221 !getASTContext().getTypedefNameForUnnamedTagDecl(Tag))
222 return false;
223 }
224
225 // Make up a reasonable number for internal decls.
226 unsigned &discriminator = Uniquifier[ND];
227 if (!discriminator)
228 discriminator = ++Discriminator[std::make_pair(DC, ND->getIdentifier())];
229 disc = discriminator + 1;
230 return true;
231 }
232
233 unsigned getLambdaId(const CXXRecordDecl *RD) {
234 assert(RD->isLambda() && "RD must be a lambda!")((RD->isLambda() && "RD must be a lambda!") ? static_cast
<void> (0) : __assert_fail ("RD->isLambda() && \"RD must be a lambda!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 234, __PRETTY_FUNCTION__))
;
235 assert(!RD->isExternallyVisible() && "RD must not be visible!")((!RD->isExternallyVisible() && "RD must not be visible!"
) ? static_cast<void> (0) : __assert_fail ("!RD->isExternallyVisible() && \"RD must not be visible!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 235, __PRETTY_FUNCTION__))
;
236 assert(RD->getLambdaManglingNumber() == 0 &&((RD->getLambdaManglingNumber() == 0 && "RD must not have a mangling number!"
) ? static_cast<void> (0) : __assert_fail ("RD->getLambdaManglingNumber() == 0 && \"RD must not have a mangling number!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 237, __PRETTY_FUNCTION__))
237 "RD must not have a mangling number!")((RD->getLambdaManglingNumber() == 0 && "RD must not have a mangling number!"
) ? static_cast<void> (0) : __assert_fail ("RD->getLambdaManglingNumber() == 0 && \"RD must not have a mangling number!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 237, __PRETTY_FUNCTION__))
;
238 std::pair<llvm::DenseMap<const CXXRecordDecl *, unsigned>::iterator, bool>
239 Result = LambdaIds.insert(std::make_pair(RD, LambdaIds.size()));
240 return Result.first->second;
241 }
242
243 /// Return a character sequence that is (somewhat) unique to the TU suitable
244 /// for mangling anonymous namespaces.
245 StringRef getAnonymousNamespaceHash() const {
246 return AnonymousNamespaceHash;
247 }
248
249private:
250 void mangleInitFiniStub(const VarDecl *D, char CharCode, raw_ostream &Out);
251};
252
253/// MicrosoftCXXNameMangler - Manage the mangling of a single name for the
254/// Microsoft Visual C++ ABI.
255class MicrosoftCXXNameMangler {
256 MicrosoftMangleContextImpl &Context;
257 raw_ostream &Out;
258
259 /// The "structor" is the top-level declaration being mangled, if
260 /// that's not a template specialization; otherwise it's the pattern
261 /// for that specialization.
262 const NamedDecl *Structor;
263 unsigned StructorType;
264
265 typedef llvm::SmallVector<std::string, 10> BackRefVec;
266 BackRefVec NameBackReferences;
267
268 typedef llvm::DenseMap<const void *, unsigned> ArgBackRefMap;
269 ArgBackRefMap FunArgBackReferences;
270 ArgBackRefMap TemplateArgBackReferences;
271
272 typedef llvm::DenseMap<const void *, StringRef> TemplateArgStringMap;
273 TemplateArgStringMap TemplateArgStrings;
274 llvm::StringSaver TemplateArgStringStorage;
275 llvm::BumpPtrAllocator TemplateArgStringStorageAlloc;
276
277 typedef std::set<std::pair<int, bool>> PassObjectSizeArgsSet;
278 PassObjectSizeArgsSet PassObjectSizeArgs;
279
280 ASTContext &getASTContext() const { return Context.getASTContext(); }
281
282 const bool PointersAre64Bit;
283
284public:
285 enum QualifierMangleMode { QMM_Drop, QMM_Mangle, QMM_Escape, QMM_Result };
286
287 MicrosoftCXXNameMangler(MicrosoftMangleContextImpl &C, raw_ostream &Out_)
288 : Context(C), Out(Out_), Structor(nullptr), StructorType(-1),
289 TemplateArgStringStorage(TemplateArgStringStorageAlloc),
290 PointersAre64Bit(C.getASTContext().getTargetInfo().getPointerWidth(0) ==
291 64) {}
292
293 MicrosoftCXXNameMangler(MicrosoftMangleContextImpl &C, raw_ostream &Out_,
294 const CXXConstructorDecl *D, CXXCtorType Type)
295 : Context(C), Out(Out_), Structor(getStructor(D)), StructorType(Type),
296 TemplateArgStringStorage(TemplateArgStringStorageAlloc),
297 PointersAre64Bit(C.getASTContext().getTargetInfo().getPointerWidth(0) ==
298 64) {}
299
300 MicrosoftCXXNameMangler(MicrosoftMangleContextImpl &C, raw_ostream &Out_,
301 const CXXDestructorDecl *D, CXXDtorType Type)
302 : Context(C), Out(Out_), Structor(getStructor(D)), StructorType(Type),
303 TemplateArgStringStorage(TemplateArgStringStorageAlloc),
304 PointersAre64Bit(C.getASTContext().getTargetInfo().getPointerWidth(0) ==
305 64) {}
306
307 raw_ostream &getStream() const { return Out; }
308
309 void mangle(const NamedDecl *D, StringRef Prefix = "?");
310 void mangleName(const NamedDecl *ND);
311 void mangleFunctionEncoding(const FunctionDecl *FD, bool ShouldMangle);
312 void mangleVariableEncoding(const VarDecl *VD);
313 void mangleMemberDataPointer(const CXXRecordDecl *RD, const ValueDecl *VD);
314 void mangleMemberFunctionPointer(const CXXRecordDecl *RD,
315 const CXXMethodDecl *MD);
316 void mangleVirtualMemPtrThunk(const CXXMethodDecl *MD,
317 const MethodVFTableLocation &ML);
318 void mangleNumber(int64_t Number);
319 void mangleTagTypeKind(TagTypeKind TK);
320 void mangleArtificialTagType(TagTypeKind TK, StringRef UnqualifiedName,
321 ArrayRef<StringRef> NestedNames = None);
322 void mangleAddressSpaceType(QualType T, Qualifiers Quals, SourceRange Range);
323 void mangleType(QualType T, SourceRange Range,
324 QualifierMangleMode QMM = QMM_Mangle);
325 void mangleFunctionType(const FunctionType *T,
326 const FunctionDecl *D = nullptr,
327 bool ForceThisQuals = false,
328 bool MangleExceptionSpec = true);
329 void mangleNestedName(const NamedDecl *ND);
330
331private:
332 bool isStructorDecl(const NamedDecl *ND) const {
333 return ND == Structor || getStructor(ND) == Structor;
334 }
335
336 bool is64BitPointer(Qualifiers Quals) const {
337 LangAS AddrSpace = Quals.getAddressSpace();
338 return AddrSpace == LangAS::ptr64 ||
339 (PointersAre64Bit && !(AddrSpace == LangAS::ptr32_sptr ||
340 AddrSpace == LangAS::ptr32_uptr));
341 }
342
343 void mangleUnqualifiedName(const NamedDecl *ND) {
344 mangleUnqualifiedName(ND, ND->getDeclName());
345 }
346 void mangleUnqualifiedName(const NamedDecl *ND, DeclarationName Name);
347 void mangleSourceName(StringRef Name);
348 void mangleOperatorName(OverloadedOperatorKind OO, SourceLocation Loc);
349 void mangleCXXDtorType(CXXDtorType T);
350 void mangleQualifiers(Qualifiers Quals, bool IsMember);
351 void mangleRefQualifier(RefQualifierKind RefQualifier);
352 void manglePointerCVQualifiers(Qualifiers Quals);
353 void manglePointerExtQualifiers(Qualifiers Quals, QualType PointeeType);
354
355 void mangleUnscopedTemplateName(const TemplateDecl *ND);
356 void
357 mangleTemplateInstantiationName(const TemplateDecl *TD,
358 const TemplateArgumentList &TemplateArgs);
359 void mangleObjCMethodName(const ObjCMethodDecl *MD);
360
361 void mangleFunctionArgumentType(QualType T, SourceRange Range);
362 void manglePassObjectSizeArg(const PassObjectSizeAttr *POSA);
363
364 bool isArtificialTagType(QualType T) const;
365
366 // Declare manglers for every type class.
367#define ABSTRACT_TYPE(CLASS, PARENT)
368#define NON_CANONICAL_TYPE(CLASS, PARENT)
369#define TYPE(CLASS, PARENT) void mangleType(const CLASS##Type *T, \
370 Qualifiers Quals, \
371 SourceRange Range);
372#include "clang/AST/TypeNodes.inc"
373#undef ABSTRACT_TYPE
374#undef NON_CANONICAL_TYPE
375#undef TYPE
376
377 void mangleType(const TagDecl *TD);
378 void mangleDecayedArrayType(const ArrayType *T);
379 void mangleArrayType(const ArrayType *T);
380 void mangleFunctionClass(const FunctionDecl *FD);
381 void mangleCallingConvention(CallingConv CC);
382 void mangleCallingConvention(const FunctionType *T);
383 void mangleIntegerLiteral(const llvm::APSInt &Number, bool IsBoolean);
384 void mangleExpression(const Expr *E);
385 void mangleThrowSpecification(const FunctionProtoType *T);
386
387 void mangleTemplateArgs(const TemplateDecl *TD,
388 const TemplateArgumentList &TemplateArgs);
389 void mangleTemplateArg(const TemplateDecl *TD, const TemplateArgument &TA,
390 const NamedDecl *Parm);
391
392 void mangleObjCProtocol(const ObjCProtocolDecl *PD);
393 void mangleObjCLifetime(const QualType T, Qualifiers Quals,
394 SourceRange Range);
395 void mangleObjCKindOfType(const ObjCObjectType *T, Qualifiers Quals,
396 SourceRange Range);
397};
398}
399
400MicrosoftMangleContextImpl::MicrosoftMangleContextImpl(ASTContext &Context,
401 DiagnosticsEngine &Diags)
402 : MicrosoftMangleContext(Context, Diags) {
403 // To mangle anonymous namespaces, hash the path to the main source file. The
404 // path should be whatever (probably relative) path was passed on the command
405 // line. The goal is for the compiler to produce the same output regardless of
406 // working directory, so use the uncanonicalized relative path.
407 //
408 // It's important to make the mangled names unique because, when CodeView
409 // debug info is in use, the debugger uses mangled type names to distinguish
410 // between otherwise identically named types in anonymous namespaces.
411 //
412 // These symbols are always internal, so there is no need for the hash to
413 // match what MSVC produces. For the same reason, clang is free to change the
414 // hash at any time without breaking compatibility with old versions of clang.
415 // The generated names are intended to look similar to what MSVC generates,
416 // which are something like "?A0x01234567@".
417 SourceManager &SM = Context.getSourceManager();
418 if (const FileEntry *FE = SM.getFileEntryForID(SM.getMainFileID())) {
419 // Truncate the hash so we get 8 characters of hexadecimal.
420 uint32_t TruncatedHash = uint32_t(xxHash64(FE->getName()));
421 AnonymousNamespaceHash = llvm::utohexstr(TruncatedHash);
422 } else {
423 // If we don't have a path to the main file, we'll just use 0.
424 AnonymousNamespaceHash = "0";
425 }
426}
427
428bool MicrosoftMangleContextImpl::shouldMangleCXXName(const NamedDecl *D) {
429 if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
430 LanguageLinkage L = FD->getLanguageLinkage();
431 // Overloadable functions need mangling.
432 if (FD->hasAttr<OverloadableAttr>())
433 return true;
434
435 // The ABI expects that we would never mangle "typical" user-defined entry
436 // points regardless of visibility or freestanding-ness.
437 //
438 // N.B. This is distinct from asking about "main". "main" has a lot of
439 // special rules associated with it in the standard while these
440 // user-defined entry points are outside of the purview of the standard.
441 // For example, there can be only one definition for "main" in a standards
442 // compliant program; however nothing forbids the existence of wmain and
443 // WinMain in the same translation unit.
444 if (FD->isMSVCRTEntryPoint())
445 return false;
446
447 // C++ functions and those whose names are not a simple identifier need
448 // mangling.
449 if (!FD->getDeclName().isIdentifier() || L == CXXLanguageLinkage)
450 return true;
451
452 // C functions are not mangled.
453 if (L == CLanguageLinkage)
454 return false;
455 }
456
457 // Otherwise, no mangling is done outside C++ mode.
458 if (!getASTContext().getLangOpts().CPlusPlus)
459 return false;
460
461 const VarDecl *VD = dyn_cast<VarDecl>(D);
462 if (VD && !isa<DecompositionDecl>(D)) {
463 // C variables are not mangled.
464 if (VD->isExternC())
465 return false;
466
467 // Variables at global scope with non-internal linkage are not mangled.
468 const DeclContext *DC = getEffectiveDeclContext(D);
469 // Check for extern variable declared locally.
470 if (DC->isFunctionOrMethod() && D->hasLinkage())
471 while (!DC->isNamespace() && !DC->isTranslationUnit())
472 DC = getEffectiveParentContext(DC);
473
474 if (DC->isTranslationUnit() && D->getFormalLinkage() == InternalLinkage &&
475 !isa<VarTemplateSpecializationDecl>(D) &&
476 D->getIdentifier() != nullptr)
477 return false;
478 }
479
480 return true;
481}
482
483bool
484MicrosoftMangleContextImpl::shouldMangleStringLiteral(const StringLiteral *SL) {
485 return true;
486}
487
488void MicrosoftCXXNameMangler::mangle(const NamedDecl *D, StringRef Prefix) {
489 // MSVC doesn't mangle C++ names the same way it mangles extern "C" names.
490 // Therefore it's really important that we don't decorate the
491 // name with leading underscores or leading/trailing at signs. So, by
492 // default, we emit an asm marker at the start so we get the name right.
493 // Callers can override this with a custom prefix.
494
495 // <mangled-name> ::= ? <name> <type-encoding>
496 Out << Prefix;
497 mangleName(D);
498 if (const FunctionDecl *FD
2.1
'FD' is null
2.1
'FD' is null
= dyn_cast<FunctionDecl>(D))
2
Assuming 'D' is not a 'FunctionDecl'
3
Taking false branch
499 mangleFunctionEncoding(FD, Context.shouldMangleDeclName(FD));
500 else if (const VarDecl *VD
4.1
'VD' is non-null
4.1
'VD' is non-null
= dyn_cast<VarDecl>(D))
4
Assuming 'D' is a 'VarDecl'
5
Taking true branch
501 mangleVariableEncoding(VD);
6
Calling 'MicrosoftCXXNameMangler::mangleVariableEncoding'
502 else
503 llvm_unreachable("Tried to mangle unexpected NamedDecl!")::llvm::llvm_unreachable_internal("Tried to mangle unexpected NamedDecl!"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 503)
;
504}
505
506void MicrosoftCXXNameMangler::mangleFunctionEncoding(const FunctionDecl *FD,
507 bool ShouldMangle) {
508 // <type-encoding> ::= <function-class> <function-type>
509
510 // Since MSVC operates on the type as written and not the canonical type, it
511 // actually matters which decl we have here. MSVC appears to choose the
512 // first, since it is most likely to be the declaration in a header file.
513 FD = FD->getFirstDecl();
514
515 // We should never ever see a FunctionNoProtoType at this point.
516 // We don't even know how to mangle their types anyway :).
517 const FunctionProtoType *FT = FD->getType()->castAs<FunctionProtoType>();
518
519 // extern "C" functions can hold entities that must be mangled.
520 // As it stands, these functions still need to get expressed in the full
521 // external name. They have their class and type omitted, replaced with '9'.
522 if (ShouldMangle) {
523 // We would like to mangle all extern "C" functions using this additional
524 // component but this would break compatibility with MSVC's behavior.
525 // Instead, do this when we know that compatibility isn't important (in
526 // other words, when it is an overloaded extern "C" function).
527 if (FD->isExternC() && FD->hasAttr<OverloadableAttr>())
528 Out << "$$J0";
529
530 mangleFunctionClass(FD);
531
532 mangleFunctionType(FT, FD, false, false);
533 } else {
534 Out << '9';
535 }
536}
537
538void MicrosoftCXXNameMangler::mangleVariableEncoding(const VarDecl *VD) {
539 // <type-encoding> ::= <storage-class> <variable-type>
540 // <storage-class> ::= 0 # private static member
541 // ::= 1 # protected static member
542 // ::= 2 # public static member
543 // ::= 3 # global
544 // ::= 4 # static local
545
546 // The first character in the encoding (after the name) is the storage class.
547 if (VD->isStaticDataMember()) {
7
Taking false branch
548 // If it's a static member, it also encodes the access level.
549 switch (VD->getAccess()) {
550 default:
551 case AS_private: Out << '0'; break;
552 case AS_protected: Out << '1'; break;
553 case AS_public: Out << '2'; break;
554 }
555 }
556 else if (!VD->isStaticLocal())
8
Taking true branch
557 Out << '3';
558 else
559 Out << '4';
560 // Now mangle the type.
561 // <variable-type> ::= <type> <cvr-qualifiers>
562 // ::= <type> <pointee-cvr-qualifiers> # pointers, references
563 // Pointers and references are odd. The type of 'int * const foo;' gets
564 // mangled as 'QAHA' instead of 'PAHB', for example.
565 SourceRange SR = VD->getSourceRange();
566 QualType Ty = VD->getType();
567 if (Ty->isPointerType() || Ty->isReferenceType() ||
9
Taking false branch
568 Ty->isMemberPointerType()) {
569 mangleType(Ty, SR, QMM_Drop);
570 manglePointerExtQualifiers(
571 Ty.getDesugaredType(getASTContext()).getLocalQualifiers(), QualType());
572 if (const MemberPointerType *MPT = Ty->getAs<MemberPointerType>()) {
573 mangleQualifiers(MPT->getPointeeType().getQualifiers(), true);
574 // Member pointers are suffixed with a back reference to the member
575 // pointer's class name.
576 mangleName(MPT->getClass()->getAsCXXRecordDecl());
577 } else
578 mangleQualifiers(Ty->getPointeeType().getQualifiers(), false);
579 } else if (const ArrayType *AT = getASTContext().getAsArrayType(Ty)) {
10
Assuming 'AT' is null
11
Taking false branch
580 // Global arrays are funny, too.
581 mangleDecayedArrayType(AT);
582 if (AT->getElementType()->isArrayType())
583 Out << 'A';
584 else
585 mangleQualifiers(Ty.getQualifiers(), false);
586 } else {
587 mangleType(Ty, SR, QMM_Drop);
12
Calling 'MicrosoftCXXNameMangler::mangleType'
588 mangleQualifiers(Ty.getQualifiers(), false);
589 }
590}
591
592void MicrosoftCXXNameMangler::mangleMemberDataPointer(const CXXRecordDecl *RD,
593 const ValueDecl *VD) {
594 // <member-data-pointer> ::= <integer-literal>
595 // ::= $F <number> <number>
596 // ::= $G <number> <number> <number>
597
598 int64_t FieldOffset;
599 int64_t VBTableOffset;
600 MSInheritanceModel IM = RD->getMSInheritanceModel();
601 if (VD) {
602 FieldOffset = getASTContext().getFieldOffset(VD);
603 assert(FieldOffset % getASTContext().getCharWidth() == 0 &&((FieldOffset % getASTContext().getCharWidth() == 0 &&
"cannot take address of bitfield") ? static_cast<void>
(0) : __assert_fail ("FieldOffset % getASTContext().getCharWidth() == 0 && \"cannot take address of bitfield\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 604, __PRETTY_FUNCTION__))
604 "cannot take address of bitfield")((FieldOffset % getASTContext().getCharWidth() == 0 &&
"cannot take address of bitfield") ? static_cast<void>
(0) : __assert_fail ("FieldOffset % getASTContext().getCharWidth() == 0 && \"cannot take address of bitfield\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 604, __PRETTY_FUNCTION__))
;
605 FieldOffset /= getASTContext().getCharWidth();
606
607 VBTableOffset = 0;
608
609 if (IM == MSInheritanceModel::Virtual)
610 FieldOffset -= getASTContext().getOffsetOfBaseWithVBPtr(RD).getQuantity();
611 } else {
612 FieldOffset = RD->nullFieldOffsetIsZero() ? 0 : -1;
613
614 VBTableOffset = -1;
615 }
616
617 char Code = '\0';
618 switch (IM) {
619 case MSInheritanceModel::Single: Code = '0'; break;
620 case MSInheritanceModel::Multiple: Code = '0'; break;
621 case MSInheritanceModel::Virtual: Code = 'F'; break;
622 case MSInheritanceModel::Unspecified: Code = 'G'; break;
623 }
624
625 Out << '$' << Code;
626
627 mangleNumber(FieldOffset);
628
629 // The C++ standard doesn't allow base-to-derived member pointer conversions
630 // in template parameter contexts, so the vbptr offset of data member pointers
631 // is always zero.
632 if (inheritanceModelHasVBPtrOffsetField(IM))
633 mangleNumber(0);
634 if (inheritanceModelHasVBTableOffsetField(IM))
635 mangleNumber(VBTableOffset);
636}
637
638void
639MicrosoftCXXNameMangler::mangleMemberFunctionPointer(const CXXRecordDecl *RD,
640 const CXXMethodDecl *MD) {
641 // <member-function-pointer> ::= $1? <name>
642 // ::= $H? <name> <number>
643 // ::= $I? <name> <number> <number>
644 // ::= $J? <name> <number> <number> <number>
645
646 MSInheritanceModel IM = RD->getMSInheritanceModel();
647
648 char Code = '\0';
649 switch (IM) {
650 case MSInheritanceModel::Single: Code = '1'; break;
651 case MSInheritanceModel::Multiple: Code = 'H'; break;
652 case MSInheritanceModel::Virtual: Code = 'I'; break;
653 case MSInheritanceModel::Unspecified: Code = 'J'; break;
654 }
655
656 // If non-virtual, mangle the name. If virtual, mangle as a virtual memptr
657 // thunk.
658 uint64_t NVOffset = 0;
659 uint64_t VBTableOffset = 0;
660 uint64_t VBPtrOffset = 0;
661 if (MD) {
662 Out << '$' << Code << '?';
663 if (MD->isVirtual()) {
664 MicrosoftVTableContext *VTContext =
665 cast<MicrosoftVTableContext>(getASTContext().getVTableContext());
666 MethodVFTableLocation ML =
667 VTContext->getMethodVFTableLocation(GlobalDecl(MD));
668 mangleVirtualMemPtrThunk(MD, ML);
669 NVOffset = ML.VFPtrOffset.getQuantity();
670 VBTableOffset = ML.VBTableIndex * 4;
671 if (ML.VBase) {
672 const ASTRecordLayout &Layout = getASTContext().getASTRecordLayout(RD);
673 VBPtrOffset = Layout.getVBPtrOffset().getQuantity();
674 }
675 } else {
676 mangleName(MD);
677 mangleFunctionEncoding(MD, /*ShouldMangle=*/true);
678 }
679
680 if (VBTableOffset == 0 && IM == MSInheritanceModel::Virtual)
681 NVOffset -= getASTContext().getOffsetOfBaseWithVBPtr(RD).getQuantity();
682 } else {
683 // Null single inheritance member functions are encoded as a simple nullptr.
684 if (IM == MSInheritanceModel::Single) {
685 Out << "$0A@";
686 return;
687 }
688 if (IM == MSInheritanceModel::Unspecified)
689 VBTableOffset = -1;
690 Out << '$' << Code;
691 }
692
693 if (inheritanceModelHasNVOffsetField(/*IsMemberFunction=*/true, IM))
694 mangleNumber(static_cast<uint32_t>(NVOffset));
695 if (inheritanceModelHasVBPtrOffsetField(IM))
696 mangleNumber(VBPtrOffset);
697 if (inheritanceModelHasVBTableOffsetField(IM))
698 mangleNumber(VBTableOffset);
699}
700
701void MicrosoftCXXNameMangler::mangleVirtualMemPtrThunk(
702 const CXXMethodDecl *MD, const MethodVFTableLocation &ML) {
703 // Get the vftable offset.
704 CharUnits PointerWidth = getASTContext().toCharUnitsFromBits(
705 getASTContext().getTargetInfo().getPointerWidth(0));
706 uint64_t OffsetInVFTable = ML.Index * PointerWidth.getQuantity();
707
708 Out << "?_9";
709 mangleName(MD->getParent());
710 Out << "$B";
711 mangleNumber(OffsetInVFTable);
712 Out << 'A';
713 mangleCallingConvention(MD->getType()->castAs<FunctionProtoType>());
714}
715
716void MicrosoftCXXNameMangler::mangleName(const NamedDecl *ND) {
717 // <name> ::= <unscoped-name> {[<named-scope>]+ | [<nested-name>]}? @
718
719 // Always start with the unqualified name.
720 mangleUnqualifiedName(ND);
721
722 mangleNestedName(ND);
723
724 // Terminate the whole name with an '@'.
725 Out << '@';
726}
727
728void MicrosoftCXXNameMangler::mangleNumber(int64_t Number) {
729 // <non-negative integer> ::= A@ # when Number == 0
730 // ::= <decimal digit> # when 1 <= Number <= 10
731 // ::= <hex digit>+ @ # when Number >= 10
732 //
733 // <number> ::= [?] <non-negative integer>
734
735 uint64_t Value = static_cast<uint64_t>(Number);
736 if (Number < 0) {
737 Value = -Value;
738 Out << '?';
739 }
740
741 if (Value == 0)
742 Out << "A@";
743 else if (Value >= 1 && Value <= 10)
744 Out << (Value - 1);
745 else {
746 // Numbers that are not encoded as decimal digits are represented as nibbles
747 // in the range of ASCII characters 'A' to 'P'.
748 // The number 0x123450 would be encoded as 'BCDEFA'
749 char EncodedNumberBuffer[sizeof(uint64_t) * 2];
750 MutableArrayRef<char> BufferRef(EncodedNumberBuffer);
751 MutableArrayRef<char>::reverse_iterator I = BufferRef.rbegin();
752 for (; Value != 0; Value >>= 4)
753 *I++ = 'A' + (Value & 0xf);
754 Out.write(I.base(), I - BufferRef.rbegin());
755 Out << '@';
756 }
757}
758
759static const TemplateDecl *
760isTemplate(const NamedDecl *ND, const TemplateArgumentList *&TemplateArgs) {
761 // Check if we have a function template.
762 if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
763 if (const TemplateDecl *TD = FD->getPrimaryTemplate()) {
764 TemplateArgs = FD->getTemplateSpecializationArgs();
765 return TD;
766 }
767 }
768
769 // Check if we have a class template.
770 if (const ClassTemplateSpecializationDecl *Spec =
771 dyn_cast<ClassTemplateSpecializationDecl>(ND)) {
772 TemplateArgs = &Spec->getTemplateArgs();
773 return Spec->getSpecializedTemplate();
774 }
775
776 // Check if we have a variable template.
777 if (const VarTemplateSpecializationDecl *Spec =
778 dyn_cast<VarTemplateSpecializationDecl>(ND)) {
779 TemplateArgs = &Spec->getTemplateArgs();
780 return Spec->getSpecializedTemplate();
781 }
782
783 return nullptr;
784}
785
786void MicrosoftCXXNameMangler::mangleUnqualifiedName(const NamedDecl *ND,
787 DeclarationName Name) {
788 // <unqualified-name> ::= <operator-name>
789 // ::= <ctor-dtor-name>
790 // ::= <source-name>
791 // ::= <template-name>
792
793 // Check if we have a template.
794 const TemplateArgumentList *TemplateArgs = nullptr;
795 if (const TemplateDecl *TD = isTemplate(ND, TemplateArgs)) {
796 // Function templates aren't considered for name back referencing. This
797 // makes sense since function templates aren't likely to occur multiple
798 // times in a symbol.
799 if (isa<FunctionTemplateDecl>(TD)) {
800 mangleTemplateInstantiationName(TD, *TemplateArgs);
801 Out << '@';
802 return;
803 }
804
805 // Here comes the tricky thing: if we need to mangle something like
806 // void foo(A::X<Y>, B::X<Y>),
807 // the X<Y> part is aliased. However, if you need to mangle
808 // void foo(A::X<A::Y>, A::X<B::Y>),
809 // the A::X<> part is not aliased.
810 // That is, from the mangler's perspective we have a structure like this:
811 // namespace[s] -> type[ -> template-parameters]
812 // but from the Clang perspective we have
813 // type [ -> template-parameters]
814 // \-> namespace[s]
815 // What we do is we create a new mangler, mangle the same type (without
816 // a namespace suffix) to a string using the extra mangler and then use
817 // the mangled type name as a key to check the mangling of different types
818 // for aliasing.
819
820 // It's important to key cache reads off ND, not TD -- the same TD can
821 // be used with different TemplateArgs, but ND uniquely identifies
822 // TD / TemplateArg pairs.
823 ArgBackRefMap::iterator Found = TemplateArgBackReferences.find(ND);
824 if (Found == TemplateArgBackReferences.end()) {
825
826 TemplateArgStringMap::iterator Found = TemplateArgStrings.find(ND);
827 if (Found == TemplateArgStrings.end()) {
828 // Mangle full template name into temporary buffer.
829 llvm::SmallString<64> TemplateMangling;
830 llvm::raw_svector_ostream Stream(TemplateMangling);
831 MicrosoftCXXNameMangler Extra(Context, Stream);
832 Extra.mangleTemplateInstantiationName(TD, *TemplateArgs);
833
834 // Use the string backref vector to possibly get a back reference.
835 mangleSourceName(TemplateMangling);
836
837 // Memoize back reference for this type if one exist, else memoize
838 // the mangling itself.
839 BackRefVec::iterator StringFound =
840 llvm::find(NameBackReferences, TemplateMangling);
841 if (StringFound != NameBackReferences.end()) {
842 TemplateArgBackReferences[ND] =
843 StringFound - NameBackReferences.begin();
844 } else {
845 TemplateArgStrings[ND] =
846 TemplateArgStringStorage.save(TemplateMangling.str());
847 }
848 } else {
849 Out << Found->second << '@'; // Outputs a StringRef.
850 }
851 } else {
852 Out << Found->second; // Outputs a back reference (an int).
853 }
854 return;
855 }
856
857 switch (Name.getNameKind()) {
858 case DeclarationName::Identifier: {
859 if (const IdentifierInfo *II = Name.getAsIdentifierInfo()) {
860 mangleSourceName(II->getName());
861 break;
862 }
863
864 // Otherwise, an anonymous entity. We must have a declaration.
865 assert(ND && "mangling empty name without declaration")((ND && "mangling empty name without declaration") ? static_cast
<void> (0) : __assert_fail ("ND && \"mangling empty name without declaration\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 865, __PRETTY_FUNCTION__))
;
866
867 if (const NamespaceDecl *NS = dyn_cast<NamespaceDecl>(ND)) {
868 if (NS->isAnonymousNamespace()) {
869 Out << "?A0x" << Context.getAnonymousNamespaceHash() << '@';
870 break;
871 }
872 }
873
874 if (const DecompositionDecl *DD = dyn_cast<DecompositionDecl>(ND)) {
875 // Decomposition declarations are considered anonymous, and get
876 // numbered with a $S prefix.
877 llvm::SmallString<64> Name("$S");
878 // Get a unique id for the anonymous struct.
879 Name += llvm::utostr(Context.getAnonymousStructId(DD) + 1);
880 mangleSourceName(Name);
881 break;
882 }
883
884 if (const VarDecl *VD = dyn_cast<VarDecl>(ND)) {
885 // We must have an anonymous union or struct declaration.
886 const CXXRecordDecl *RD = VD->getType()->getAsCXXRecordDecl();
887 assert(RD && "expected variable decl to have a record type")((RD && "expected variable decl to have a record type"
) ? static_cast<void> (0) : __assert_fail ("RD && \"expected variable decl to have a record type\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 887, __PRETTY_FUNCTION__))
;
888 // Anonymous types with no tag or typedef get the name of their
889 // declarator mangled in. If they have no declarator, number them with
890 // a $S prefix.
891 llvm::SmallString<64> Name("$S");
892 // Get a unique id for the anonymous struct.
893 Name += llvm::utostr(Context.getAnonymousStructId(RD) + 1);
894 mangleSourceName(Name.str());
895 break;
896 }
897
898 // We must have an anonymous struct.
899 const TagDecl *TD = cast<TagDecl>(ND);
900 if (const TypedefNameDecl *D = TD->getTypedefNameForAnonDecl()) {
901 assert(TD->getDeclContext() == D->getDeclContext() &&((TD->getDeclContext() == D->getDeclContext() &&
"Typedef should not be in another decl context!") ? static_cast
<void> (0) : __assert_fail ("TD->getDeclContext() == D->getDeclContext() && \"Typedef should not be in another decl context!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 902, __PRETTY_FUNCTION__))
902 "Typedef should not be in another decl context!")((TD->getDeclContext() == D->getDeclContext() &&
"Typedef should not be in another decl context!") ? static_cast
<void> (0) : __assert_fail ("TD->getDeclContext() == D->getDeclContext() && \"Typedef should not be in another decl context!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 902, __PRETTY_FUNCTION__))
;
903 assert(D->getDeclName().getAsIdentifierInfo() &&((D->getDeclName().getAsIdentifierInfo() && "Typedef was not named!"
) ? static_cast<void> (0) : __assert_fail ("D->getDeclName().getAsIdentifierInfo() && \"Typedef was not named!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 904, __PRETTY_FUNCTION__))
904 "Typedef was not named!")((D->getDeclName().getAsIdentifierInfo() && "Typedef was not named!"
) ? static_cast<void> (0) : __assert_fail ("D->getDeclName().getAsIdentifierInfo() && \"Typedef was not named!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 904, __PRETTY_FUNCTION__))
;
905 mangleSourceName(D->getDeclName().getAsIdentifierInfo()->getName());
906 break;
907 }
908
909 if (const CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(TD)) {
910 if (Record->isLambda()) {
911 llvm::SmallString<10> Name("<lambda_");
912
913 Decl *LambdaContextDecl = Record->getLambdaContextDecl();
914 unsigned LambdaManglingNumber = Record->getLambdaManglingNumber();
915 unsigned LambdaId;
916 const ParmVarDecl *Parm =
917 dyn_cast_or_null<ParmVarDecl>(LambdaContextDecl);
918 const FunctionDecl *Func =
919 Parm ? dyn_cast<FunctionDecl>(Parm->getDeclContext()) : nullptr;
920
921 if (Func) {
922 unsigned DefaultArgNo =
923 Func->getNumParams() - Parm->getFunctionScopeIndex();
924 Name += llvm::utostr(DefaultArgNo);
925 Name += "_";
926 }
927
928 if (LambdaManglingNumber)
929 LambdaId = LambdaManglingNumber;
930 else
931 LambdaId = Context.getLambdaId(Record);
932
933 Name += llvm::utostr(LambdaId);
934 Name += ">";
935
936 mangleSourceName(Name);
937
938 // If the context of a closure type is an initializer for a class
939 // member (static or nonstatic), it is encoded in a qualified name.
940 if (LambdaManglingNumber && LambdaContextDecl) {
941 if ((isa<VarDecl>(LambdaContextDecl) ||
942 isa<FieldDecl>(LambdaContextDecl)) &&
943 LambdaContextDecl->getDeclContext()->isRecord()) {
944 mangleUnqualifiedName(cast<NamedDecl>(LambdaContextDecl));
945 }
946 }
947 break;
948 }
949 }
950
951 llvm::SmallString<64> Name;
952 if (DeclaratorDecl *DD =
953 Context.getASTContext().getDeclaratorForUnnamedTagDecl(TD)) {
954 // Anonymous types without a name for linkage purposes have their
955 // declarator mangled in if they have one.
956 Name += "<unnamed-type-";
957 Name += DD->getName();
958 } else if (TypedefNameDecl *TND =
959 Context.getASTContext().getTypedefNameForUnnamedTagDecl(
960 TD)) {
961 // Anonymous types without a name for linkage purposes have their
962 // associate typedef mangled in if they have one.
963 Name += "<unnamed-type-";
964 Name += TND->getName();
965 } else if (isa<EnumDecl>(TD) &&
966 cast<EnumDecl>(TD)->enumerator_begin() !=
967 cast<EnumDecl>(TD)->enumerator_end()) {
968 // Anonymous non-empty enums mangle in the first enumerator.
969 auto *ED = cast<EnumDecl>(TD);
970 Name += "<unnamed-enum-";
971 Name += ED->enumerator_begin()->getName();
972 } else {
973 // Otherwise, number the types using a $S prefix.
974 Name += "<unnamed-type-$S";
975 Name += llvm::utostr(Context.getAnonymousStructId(TD) + 1);
976 }
977 Name += ">";
978 mangleSourceName(Name.str());
979 break;
980 }
981
982 case DeclarationName::ObjCZeroArgSelector:
983 case DeclarationName::ObjCOneArgSelector:
984 case DeclarationName::ObjCMultiArgSelector: {
985 // This is reachable only when constructing an outlined SEH finally
986 // block. Nothing depends on this mangling and it's used only with
987 // functinos with internal linkage.
988 llvm::SmallString<64> Name;
989 mangleSourceName(Name.str());
990 break;
991 }
992
993 case DeclarationName::CXXConstructorName:
994 if (isStructorDecl(ND)) {
995 if (StructorType == Ctor_CopyingClosure) {
996 Out << "?_O";
997 return;
998 }
999 if (StructorType == Ctor_DefaultClosure) {
1000 Out << "?_F";
1001 return;
1002 }
1003 }
1004 Out << "?0";
1005 return;
1006
1007 case DeclarationName::CXXDestructorName:
1008 if (isStructorDecl(ND))
1009 // If the named decl is the C++ destructor we're mangling,
1010 // use the type we were given.
1011 mangleCXXDtorType(static_cast<CXXDtorType>(StructorType));
1012 else
1013 // Otherwise, use the base destructor name. This is relevant if a
1014 // class with a destructor is declared within a destructor.
1015 mangleCXXDtorType(Dtor_Base);
1016 break;
1017
1018 case DeclarationName::CXXConversionFunctionName:
1019 // <operator-name> ::= ?B # (cast)
1020 // The target type is encoded as the return type.
1021 Out << "?B";
1022 break;
1023
1024 case DeclarationName::CXXOperatorName:
1025 mangleOperatorName(Name.getCXXOverloadedOperator(), ND->getLocation());
1026 break;
1027
1028 case DeclarationName::CXXLiteralOperatorName: {
1029 Out << "?__K";
1030 mangleSourceName(Name.getCXXLiteralIdentifier()->getName());
1031 break;
1032 }
1033
1034 case DeclarationName::CXXDeductionGuideName:
1035 llvm_unreachable("Can't mangle a deduction guide name!")::llvm::llvm_unreachable_internal("Can't mangle a deduction guide name!"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 1035)
;
1036
1037 case DeclarationName::CXXUsingDirective:
1038 llvm_unreachable("Can't mangle a using directive name!")::llvm::llvm_unreachable_internal("Can't mangle a using directive name!"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 1038)
;
1039 }
1040}
1041
1042// <postfix> ::= <unqualified-name> [<postfix>]
1043// ::= <substitution> [<postfix>]
1044void MicrosoftCXXNameMangler::mangleNestedName(const NamedDecl *ND) {
1045 const DeclContext *DC = getEffectiveDeclContext(ND);
1046 while (!DC->isTranslationUnit()) {
1047 if (isa<TagDecl>(ND) || isa<VarDecl>(ND)) {
1048 unsigned Disc;
1049 if (Context.getNextDiscriminator(ND, Disc)) {
1050 Out << '?';
1051 mangleNumber(Disc);
1052 Out << '?';
1053 }
1054 }
1055
1056 if (const BlockDecl *BD = dyn_cast<BlockDecl>(DC)) {
1057 auto Discriminate =
1058 [](StringRef Name, const unsigned Discriminator,
1059 const unsigned ParameterDiscriminator) -> std::string {
1060 std::string Buffer;
1061 llvm::raw_string_ostream Stream(Buffer);
1062 Stream << Name;
1063 if (Discriminator)
1064 Stream << '_' << Discriminator;
1065 if (ParameterDiscriminator)
1066 Stream << '_' << ParameterDiscriminator;
1067 return Stream.str();
1068 };
1069
1070 unsigned Discriminator = BD->getBlockManglingNumber();
1071 if (!Discriminator)
1072 Discriminator = Context.getBlockId(BD, /*Local=*/false);
1073
1074 // Mangle the parameter position as a discriminator to deal with unnamed
1075 // parameters. Rather than mangling the unqualified parameter name,
1076 // always use the position to give a uniform mangling.
1077 unsigned ParameterDiscriminator = 0;
1078 if (const auto *MC = BD->getBlockManglingContextDecl())
1079 if (const auto *P = dyn_cast<ParmVarDecl>(MC))
1080 if (const auto *F = dyn_cast<FunctionDecl>(P->getDeclContext()))
1081 ParameterDiscriminator =
1082 F->getNumParams() - P->getFunctionScopeIndex();
1083
1084 DC = getEffectiveDeclContext(BD);
1085
1086 Out << '?';
1087 mangleSourceName(Discriminate("_block_invoke", Discriminator,
1088 ParameterDiscriminator));
1089 // If we have a block mangling context, encode that now. This allows us
1090 // to discriminate between named static data initializers in the same
1091 // scope. This is handled differently from parameters, which use
1092 // positions to discriminate between multiple instances.
1093 if (const auto *MC = BD->getBlockManglingContextDecl())
1094 if (!isa<ParmVarDecl>(MC))
1095 if (const auto *ND = dyn_cast<NamedDecl>(MC))
1096 mangleUnqualifiedName(ND);
1097 // MS ABI and Itanium manglings are in inverted scopes. In the case of a
1098 // RecordDecl, mangle the entire scope hierarchy at this point rather than
1099 // just the unqualified name to get the ordering correct.
1100 if (const auto *RD = dyn_cast<RecordDecl>(DC))
1101 mangleName(RD);
1102 else
1103 Out << '@';
1104 // void __cdecl
1105 Out << "YAX";
1106 // struct __block_literal *
1107 Out << 'P';
1108 // __ptr64
1109 if (PointersAre64Bit)
1110 Out << 'E';
1111 Out << 'A';
1112 mangleArtificialTagType(TTK_Struct,
1113 Discriminate("__block_literal", Discriminator,
1114 ParameterDiscriminator));
1115 Out << "@Z";
1116
1117 // If the effective context was a Record, we have fully mangled the
1118 // qualified name and do not need to continue.
1119 if (isa<RecordDecl>(DC))
1120 break;
1121 continue;
1122 } else if (const ObjCMethodDecl *Method = dyn_cast<ObjCMethodDecl>(DC)) {
1123 mangleObjCMethodName(Method);
1124 } else if (isa<NamedDecl>(DC)) {
1125 ND = cast<NamedDecl>(DC);
1126 if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
1127 mangle(FD, "?");
1128 break;
1129 } else {
1130 mangleUnqualifiedName(ND);
1131 // Lambdas in default arguments conceptually belong to the function the
1132 // parameter corresponds to.
1133 if (const auto *LDADC = getLambdaDefaultArgumentDeclContext(ND)) {
1134 DC = LDADC;
1135 continue;
1136 }
1137 }
1138 }
1139 DC = DC->getParent();
1140 }
1141}
1142
1143void MicrosoftCXXNameMangler::mangleCXXDtorType(CXXDtorType T) {
1144 // Microsoft uses the names on the case labels for these dtor variants. Clang
1145 // uses the Itanium terminology internally. Everything in this ABI delegates
1146 // towards the base dtor.
1147 switch (T) {
1148 // <operator-name> ::= ?1 # destructor
1149 case Dtor_Base: Out << "?1"; return;
1150 // <operator-name> ::= ?_D # vbase destructor
1151 case Dtor_Complete: Out << "?_D"; return;
1152 // <operator-name> ::= ?_G # scalar deleting destructor
1153 case Dtor_Deleting: Out << "?_G"; return;
1154 // <operator-name> ::= ?_E # vector deleting destructor
1155 // FIXME: Add a vector deleting dtor type. It goes in the vtable, so we need
1156 // it.
1157 case Dtor_Comdat:
1158 llvm_unreachable("not expecting a COMDAT")::llvm::llvm_unreachable_internal("not expecting a COMDAT", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 1158)
;
1159 }
1160 llvm_unreachable("Unsupported dtor type?")::llvm::llvm_unreachable_internal("Unsupported dtor type?", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 1160)
;
1161}
1162
1163void MicrosoftCXXNameMangler::mangleOperatorName(OverloadedOperatorKind OO,
1164 SourceLocation Loc) {
1165 switch (OO) {
1166 // ?0 # constructor
1167 // ?1 # destructor
1168 // <operator-name> ::= ?2 # new
1169 case OO_New: Out << "?2"; break;
1170 // <operator-name> ::= ?3 # delete
1171 case OO_Delete: Out << "?3"; break;
1172 // <operator-name> ::= ?4 # =
1173 case OO_Equal: Out << "?4"; break;
1174 // <operator-name> ::= ?5 # >>
1175 case OO_GreaterGreater: Out << "?5"; break;
1176 // <operator-name> ::= ?6 # <<
1177 case OO_LessLess: Out << "?6"; break;
1178 // <operator-name> ::= ?7 # !
1179 case OO_Exclaim: Out << "?7"; break;
1180 // <operator-name> ::= ?8 # ==
1181 case OO_EqualEqual: Out << "?8"; break;
1182 // <operator-name> ::= ?9 # !=
1183 case OO_ExclaimEqual: Out << "?9"; break;
1184 // <operator-name> ::= ?A # []
1185 case OO_Subscript: Out << "?A"; break;
1186 // ?B # conversion
1187 // <operator-name> ::= ?C # ->
1188 case OO_Arrow: Out << "?C"; break;
1189 // <operator-name> ::= ?D # *
1190 case OO_Star: Out << "?D"; break;
1191 // <operator-name> ::= ?E # ++
1192 case OO_PlusPlus: Out << "?E"; break;
1193 // <operator-name> ::= ?F # --
1194 case OO_MinusMinus: Out << "?F"; break;
1195 // <operator-name> ::= ?G # -
1196 case OO_Minus: Out << "?G"; break;
1197 // <operator-name> ::= ?H # +
1198 case OO_Plus: Out << "?H"; break;
1199 // <operator-name> ::= ?I # &
1200 case OO_Amp: Out << "?I"; break;
1201 // <operator-name> ::= ?J # ->*
1202 case OO_ArrowStar: Out << "?J"; break;
1203 // <operator-name> ::= ?K # /
1204 case OO_Slash: Out << "?K"; break;
1205 // <operator-name> ::= ?L # %
1206 case OO_Percent: Out << "?L"; break;
1207 // <operator-name> ::= ?M # <
1208 case OO_Less: Out << "?M"; break;
1209 // <operator-name> ::= ?N # <=
1210 case OO_LessEqual: Out << "?N"; break;
1211 // <operator-name> ::= ?O # >
1212 case OO_Greater: Out << "?O"; break;
1213 // <operator-name> ::= ?P # >=
1214 case OO_GreaterEqual: Out << "?P"; break;
1215 // <operator-name> ::= ?Q # ,
1216 case OO_Comma: Out << "?Q"; break;
1217 // <operator-name> ::= ?R # ()
1218 case OO_Call: Out << "?R"; break;
1219 // <operator-name> ::= ?S # ~
1220 case OO_Tilde: Out << "?S"; break;
1221 // <operator-name> ::= ?T # ^
1222 case OO_Caret: Out << "?T"; break;
1223 // <operator-name> ::= ?U # |
1224 case OO_Pipe: Out << "?U"; break;
1225 // <operator-name> ::= ?V # &&
1226 case OO_AmpAmp: Out << "?V"; break;
1227 // <operator-name> ::= ?W # ||
1228 case OO_PipePipe: Out << "?W"; break;
1229 // <operator-name> ::= ?X # *=
1230 case OO_StarEqual: Out << "?X"; break;
1231 // <operator-name> ::= ?Y # +=
1232 case OO_PlusEqual: Out << "?Y"; break;
1233 // <operator-name> ::= ?Z # -=
1234 case OO_MinusEqual: Out << "?Z"; break;
1235 // <operator-name> ::= ?_0 # /=
1236 case OO_SlashEqual: Out << "?_0"; break;
1237 // <operator-name> ::= ?_1 # %=
1238 case OO_PercentEqual: Out << "?_1"; break;
1239 // <operator-name> ::= ?_2 # >>=
1240 case OO_GreaterGreaterEqual: Out << "?_2"; break;
1241 // <operator-name> ::= ?_3 # <<=
1242 case OO_LessLessEqual: Out << "?_3"; break;
1243 // <operator-name> ::= ?_4 # &=
1244 case OO_AmpEqual: Out << "?_4"; break;
1245 // <operator-name> ::= ?_5 # |=
1246 case OO_PipeEqual: Out << "?_5"; break;
1247 // <operator-name> ::= ?_6 # ^=
1248 case OO_CaretEqual: Out << "?_6"; break;
1249 // ?_7 # vftable
1250 // ?_8 # vbtable
1251 // ?_9 # vcall
1252 // ?_A # typeof
1253 // ?_B # local static guard
1254 // ?_C # string
1255 // ?_D # vbase destructor
1256 // ?_E # vector deleting destructor
1257 // ?_F # default constructor closure
1258 // ?_G # scalar deleting destructor
1259 // ?_H # vector constructor iterator
1260 // ?_I # vector destructor iterator
1261 // ?_J # vector vbase constructor iterator
1262 // ?_K # virtual displacement map
1263 // ?_L # eh vector constructor iterator
1264 // ?_M # eh vector destructor iterator
1265 // ?_N # eh vector vbase constructor iterator
1266 // ?_O # copy constructor closure
1267 // ?_P<name> # udt returning <name>
1268 // ?_Q # <unknown>
1269 // ?_R0 # RTTI Type Descriptor
1270 // ?_R1 # RTTI Base Class Descriptor at (a,b,c,d)
1271 // ?_R2 # RTTI Base Class Array
1272 // ?_R3 # RTTI Class Hierarchy Descriptor
1273 // ?_R4 # RTTI Complete Object Locator
1274 // ?_S # local vftable
1275 // ?_T # local vftable constructor closure
1276 // <operator-name> ::= ?_U # new[]
1277 case OO_Array_New: Out << "?_U"; break;
1278 // <operator-name> ::= ?_V # delete[]
1279 case OO_Array_Delete: Out << "?_V"; break;
1280 // <operator-name> ::= ?__L # co_await
1281 case OO_Coawait: Out << "?__L"; break;
1282 // <operator-name> ::= ?__M # <=>
1283 case OO_Spaceship: Out << "?__M"; break;
1284
1285 case OO_Conditional: {
1286 DiagnosticsEngine &Diags = Context.getDiags();
1287 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
1288 "cannot mangle this conditional operator yet");
1289 Diags.Report(Loc, DiagID);
1290 break;
1291 }
1292
1293 case OO_None:
1294 case NUM_OVERLOADED_OPERATORS:
1295 llvm_unreachable("Not an overloaded operator")::llvm::llvm_unreachable_internal("Not an overloaded operator"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 1295)
;
1296 }
1297}
1298
1299void MicrosoftCXXNameMangler::mangleSourceName(StringRef Name) {
1300 // <source name> ::= <identifier> @
1301 BackRefVec::iterator Found = llvm::find(NameBackReferences, Name);
1302 if (Found == NameBackReferences.end()) {
1303 if (NameBackReferences.size() < 10)
1304 NameBackReferences.push_back(Name);
1305 Out << Name << '@';
1306 } else {
1307 Out << (Found - NameBackReferences.begin());
1308 }
1309}
1310
1311void MicrosoftCXXNameMangler::mangleObjCMethodName(const ObjCMethodDecl *MD) {
1312 Context.mangleObjCMethodName(MD, Out);
1313}
1314
1315void MicrosoftCXXNameMangler::mangleTemplateInstantiationName(
1316 const TemplateDecl *TD, const TemplateArgumentList &TemplateArgs) {
1317 // <template-name> ::= <unscoped-template-name> <template-args>
1318 // ::= <substitution>
1319 // Always start with the unqualified name.
1320
1321 // Templates have their own context for back references.
1322 ArgBackRefMap OuterFunArgsContext;
1323 ArgBackRefMap OuterTemplateArgsContext;
1324 BackRefVec OuterTemplateContext;
1325 PassObjectSizeArgsSet OuterPassObjectSizeArgs;
1326 NameBackReferences.swap(OuterTemplateContext);
1327 FunArgBackReferences.swap(OuterFunArgsContext);
1328 TemplateArgBackReferences.swap(OuterTemplateArgsContext);
1329 PassObjectSizeArgs.swap(OuterPassObjectSizeArgs);
1330
1331 mangleUnscopedTemplateName(TD);
1332 mangleTemplateArgs(TD, TemplateArgs);
1333
1334 // Restore the previous back reference contexts.
1335 NameBackReferences.swap(OuterTemplateContext);
1336 FunArgBackReferences.swap(OuterFunArgsContext);
1337 TemplateArgBackReferences.swap(OuterTemplateArgsContext);
1338 PassObjectSizeArgs.swap(OuterPassObjectSizeArgs);
1339}
1340
1341void
1342MicrosoftCXXNameMangler::mangleUnscopedTemplateName(const TemplateDecl *TD) {
1343 // <unscoped-template-name> ::= ?$ <unqualified-name>
1344 Out << "?$";
1345 mangleUnqualifiedName(TD);
1346}
1347
1348void MicrosoftCXXNameMangler::mangleIntegerLiteral(const llvm::APSInt &Value,
1349 bool IsBoolean) {
1350 // <integer-literal> ::= $0 <number>
1351 Out << "$0";
1352 // Make sure booleans are encoded as 0/1.
1353 if (IsBoolean && Value.getBoolValue())
1354 mangleNumber(1);
1355 else if (Value.isSigned())
1356 mangleNumber(Value.getSExtValue());
1357 else
1358 mangleNumber(Value.getZExtValue());
1359}
1360
1361void MicrosoftCXXNameMangler::mangleExpression(const Expr *E) {
1362 // See if this is a constant expression.
1363 llvm::APSInt Value;
1364 if (E->isIntegerConstantExpr(Value, Context.getASTContext())) {
1365 mangleIntegerLiteral(Value, E->getType()->isBooleanType());
1366 return;
1367 }
1368
1369 // Look through no-op casts like template parameter substitutions.
1370 E = E->IgnoreParenNoopCasts(Context.getASTContext());
1371
1372 const CXXUuidofExpr *UE = nullptr;
1373 if (const UnaryOperator *UO = dyn_cast<UnaryOperator>(E)) {
1374 if (UO->getOpcode() == UO_AddrOf)
1375 UE = dyn_cast<CXXUuidofExpr>(UO->getSubExpr());
1376 } else
1377 UE = dyn_cast<CXXUuidofExpr>(E);
1378
1379 if (UE) {
1380 // If we had to peek through an address-of operator, treat this like we are
1381 // dealing with a pointer type. Otherwise, treat it like a const reference.
1382 //
1383 // N.B. This matches up with the handling of TemplateArgument::Declaration
1384 // in mangleTemplateArg
1385 if (UE == E)
1386 Out << "$E?";
1387 else
1388 Out << "$1?";
1389
1390 // This CXXUuidofExpr is mangled as-if it were actually a VarDecl from
1391 // const __s_GUID _GUID_{lower case UUID with underscores}
1392 StringRef Uuid = UE->getUuidStr();
1393 std::string Name = "_GUID_" + Uuid.lower();
1394 std::replace(Name.begin(), Name.end(), '-', '_');
1395
1396 mangleSourceName(Name);
1397 // Terminate the whole name with an '@'.
1398 Out << '@';
1399 // It's a global variable.
1400 Out << '3';
1401 // It's a struct called __s_GUID.
1402 mangleArtificialTagType(TTK_Struct, "__s_GUID");
1403 // It's const.
1404 Out << 'B';
1405 return;
1406 }
1407
1408 // As bad as this diagnostic is, it's better than crashing.
1409 DiagnosticsEngine &Diags = Context.getDiags();
1410 unsigned DiagID = Diags.getCustomDiagID(
1411 DiagnosticsEngine::Error, "cannot yet mangle expression type %0");
1412 Diags.Report(E->getExprLoc(), DiagID) << E->getStmtClassName()
1413 << E->getSourceRange();
1414}
1415
1416void MicrosoftCXXNameMangler::mangleTemplateArgs(
1417 const TemplateDecl *TD, const TemplateArgumentList &TemplateArgs) {
1418 // <template-args> ::= <template-arg>+
1419 const TemplateParameterList *TPL = TD->getTemplateParameters();
1420 assert(TPL->size() == TemplateArgs.size() &&((TPL->size() == TemplateArgs.size() && "size mismatch between args and parms!"
) ? static_cast<void> (0) : __assert_fail ("TPL->size() == TemplateArgs.size() && \"size mismatch between args and parms!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 1421, __PRETTY_FUNCTION__))
1421 "size mismatch between args and parms!")((TPL->size() == TemplateArgs.size() && "size mismatch between args and parms!"
) ? static_cast<void> (0) : __assert_fail ("TPL->size() == TemplateArgs.size() && \"size mismatch between args and parms!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 1421, __PRETTY_FUNCTION__))
;
1422
1423 for (size_t i = 0; i < TemplateArgs.size(); ++i) {
1424 const TemplateArgument &TA = TemplateArgs[i];
1425
1426 // Separate consecutive packs by $$Z.
1427 if (i > 0 && TA.getKind() == TemplateArgument::Pack &&
1428 TemplateArgs[i - 1].getKind() == TemplateArgument::Pack)
1429 Out << "$$Z";
1430
1431 mangleTemplateArg(TD, TA, TPL->getParam(i));
1432 }
1433}
1434
1435void MicrosoftCXXNameMangler::mangleTemplateArg(const TemplateDecl *TD,
1436 const TemplateArgument &TA,
1437 const NamedDecl *Parm) {
1438 // <template-arg> ::= <type>
1439 // ::= <integer-literal>
1440 // ::= <member-data-pointer>
1441 // ::= <member-function-pointer>
1442 // ::= $E? <name> <type-encoding>
1443 // ::= $1? <name> <type-encoding>
1444 // ::= $0A@
1445 // ::= <template-args>
1446
1447 switch (TA.getKind()) {
1448 case TemplateArgument::Null:
1449 llvm_unreachable("Can't mangle null template arguments!")::llvm::llvm_unreachable_internal("Can't mangle null template arguments!"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 1449)
;
1450 case TemplateArgument::TemplateExpansion:
1451 llvm_unreachable("Can't mangle template expansion arguments!")::llvm::llvm_unreachable_internal("Can't mangle template expansion arguments!"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 1451)
;
1452 case TemplateArgument::Type: {
1453 QualType T = TA.getAsType();
1454 mangleType(T, SourceRange(), QMM_Escape);
1455 break;
1456 }
1457 case TemplateArgument::Declaration: {
1458 const NamedDecl *ND = TA.getAsDecl();
1459 if (isa<FieldDecl>(ND) || isa<IndirectFieldDecl>(ND)) {
1460 mangleMemberDataPointer(cast<CXXRecordDecl>(ND->getDeclContext())
1461 ->getMostRecentNonInjectedDecl(),
1462 cast<ValueDecl>(ND));
1463 } else if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
1464 const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD);
1465 if (MD && MD->isInstance()) {
1466 mangleMemberFunctionPointer(
1467 MD->getParent()->getMostRecentNonInjectedDecl(), MD);
1468 } else {
1469 Out << "$1?";
1470 mangleName(FD);
1471 mangleFunctionEncoding(FD, /*ShouldMangle=*/true);
1472 }
1473 } else {
1474 mangle(ND, TA.getParamTypeForDecl()->isReferenceType() ? "$E?" : "$1?");
1475 }
1476 break;
1477 }
1478 case TemplateArgument::Integral:
1479 mangleIntegerLiteral(TA.getAsIntegral(),
1480 TA.getIntegralType()->isBooleanType());
1481 break;
1482 case TemplateArgument::NullPtr: {
1483 QualType T = TA.getNullPtrType();
1484 if (const MemberPointerType *MPT = T->getAs<MemberPointerType>()) {
1485 const CXXRecordDecl *RD = MPT->getMostRecentCXXRecordDecl();
1486 if (MPT->isMemberFunctionPointerType() &&
1487 !isa<FunctionTemplateDecl>(TD)) {
1488 mangleMemberFunctionPointer(RD, nullptr);
1489 return;
1490 }
1491 if (MPT->isMemberDataPointer()) {
1492 if (!isa<FunctionTemplateDecl>(TD)) {
1493 mangleMemberDataPointer(RD, nullptr);
1494 return;
1495 }
1496 // nullptr data pointers are always represented with a single field
1497 // which is initialized with either 0 or -1. Why -1? Well, we need to
1498 // distinguish the case where the data member is at offset zero in the
1499 // record.
1500 // However, we are free to use 0 *if* we would use multiple fields for
1501 // non-nullptr member pointers.
1502 if (!RD->nullFieldOffsetIsZero()) {
1503 mangleIntegerLiteral(llvm::APSInt::get(-1), /*IsBoolean=*/false);
1504 return;
1505 }
1506 }
1507 }
1508 mangleIntegerLiteral(llvm::APSInt::getUnsigned(0), /*IsBoolean=*/false);
1509 break;
1510 }
1511 case TemplateArgument::Expression:
1512 mangleExpression(TA.getAsExpr());
1513 break;
1514 case TemplateArgument::Pack: {
1515 ArrayRef<TemplateArgument> TemplateArgs = TA.getPackAsArray();
1516 if (TemplateArgs.empty()) {
1517 if (isa<TemplateTypeParmDecl>(Parm) ||
1518 isa<TemplateTemplateParmDecl>(Parm))
1519 // MSVC 2015 changed the mangling for empty expanded template packs,
1520 // use the old mangling for link compatibility for old versions.
1521 Out << (Context.getASTContext().getLangOpts().isCompatibleWithMSVC(
1522 LangOptions::MSVC2015)
1523 ? "$$V"
1524 : "$$$V");
1525 else if (isa<NonTypeTemplateParmDecl>(Parm))
1526 Out << "$S";
1527 else
1528 llvm_unreachable("unexpected template parameter decl!")::llvm::llvm_unreachable_internal("unexpected template parameter decl!"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 1528)
;
1529 } else {
1530 for (const TemplateArgument &PA : TemplateArgs)
1531 mangleTemplateArg(TD, PA, Parm);
1532 }
1533 break;
1534 }
1535 case TemplateArgument::Template: {
1536 const NamedDecl *ND =
1537 TA.getAsTemplate().getAsTemplateDecl()->getTemplatedDecl();
1538 if (const auto *TD = dyn_cast<TagDecl>(ND)) {
1539 mangleType(TD);
1540 } else if (isa<TypeAliasDecl>(ND)) {
1541 Out << "$$Y";
1542 mangleName(ND);
1543 } else {
1544 llvm_unreachable("unexpected template template NamedDecl!")::llvm::llvm_unreachable_internal("unexpected template template NamedDecl!"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 1544)
;
1545 }
1546 break;
1547 }
1548 }
1549}
1550
1551void MicrosoftCXXNameMangler::mangleObjCProtocol(const ObjCProtocolDecl *PD) {
1552 llvm::SmallString<64> TemplateMangling;
1553 llvm::raw_svector_ostream Stream(TemplateMangling);
1554 MicrosoftCXXNameMangler Extra(Context, Stream);
1555
1556 Stream << "?$";
1557 Extra.mangleSourceName("Protocol");
1558 Extra.mangleArtificialTagType(TTK_Struct, PD->getName());
1559
1560 mangleArtificialTagType(TTK_Struct, TemplateMangling, {"__ObjC"});
1561}
1562
1563void MicrosoftCXXNameMangler::mangleObjCLifetime(const QualType Type,
1564 Qualifiers Quals,
1565 SourceRange Range) {
1566 llvm::SmallString<64> TemplateMangling;
1567 llvm::raw_svector_ostream Stream(TemplateMangling);
1568 MicrosoftCXXNameMangler Extra(Context, Stream);
1569
1570 Stream << "?$";
1571 switch (Quals.getObjCLifetime()) {
1572 case Qualifiers::OCL_None:
1573 case Qualifiers::OCL_ExplicitNone:
1574 break;
1575 case Qualifiers::OCL_Autoreleasing:
1576 Extra.mangleSourceName("Autoreleasing");
1577 break;
1578 case Qualifiers::OCL_Strong:
1579 Extra.mangleSourceName("Strong");
1580 break;
1581 case Qualifiers::OCL_Weak:
1582 Extra.mangleSourceName("Weak");
1583 break;
1584 }
1585 Extra.manglePointerCVQualifiers(Quals);
1586 Extra.manglePointerExtQualifiers(Quals, Type);
1587 Extra.mangleType(Type, Range);
1588
1589 mangleArtificialTagType(TTK_Struct, TemplateMangling, {"__ObjC"});
1590}
1591
1592void MicrosoftCXXNameMangler::mangleObjCKindOfType(const ObjCObjectType *T,
1593 Qualifiers Quals,
1594 SourceRange Range) {
1595 llvm::SmallString<64> TemplateMangling;
1596 llvm::raw_svector_ostream Stream(TemplateMangling);
1597 MicrosoftCXXNameMangler Extra(Context, Stream);
1598
1599 Stream << "?$";
1600 Extra.mangleSourceName("KindOf");
1601 Extra.mangleType(QualType(T, 0)
1602 .stripObjCKindOfType(getASTContext())
1603 ->getAs<ObjCObjectType>(),
1604 Quals, Range);
1605
1606 mangleArtificialTagType(TTK_Struct, TemplateMangling, {"__ObjC"});
1607}
1608
1609void MicrosoftCXXNameMangler::mangleQualifiers(Qualifiers Quals,
1610 bool IsMember) {
1611 // <cvr-qualifiers> ::= [E] [F] [I] <base-cvr-qualifiers>
1612 // 'E' means __ptr64 (32-bit only); 'F' means __unaligned (32/64-bit only);
1613 // 'I' means __restrict (32/64-bit).
1614 // Note that the MSVC __restrict keyword isn't the same as the C99 restrict
1615 // keyword!
1616 // <base-cvr-qualifiers> ::= A # near
1617 // ::= B # near const
1618 // ::= C # near volatile
1619 // ::= D # near const volatile
1620 // ::= E # far (16-bit)
1621 // ::= F # far const (16-bit)
1622 // ::= G # far volatile (16-bit)
1623 // ::= H # far const volatile (16-bit)
1624 // ::= I # huge (16-bit)
1625 // ::= J # huge const (16-bit)
1626 // ::= K # huge volatile (16-bit)
1627 // ::= L # huge const volatile (16-bit)
1628 // ::= M <basis> # based
1629 // ::= N <basis> # based const
1630 // ::= O <basis> # based volatile
1631 // ::= P <basis> # based const volatile
1632 // ::= Q # near member
1633 // ::= R # near const member
1634 // ::= S # near volatile member
1635 // ::= T # near const volatile member
1636 // ::= U # far member (16-bit)
1637 // ::= V # far const member (16-bit)
1638 // ::= W # far volatile member (16-bit)
1639 // ::= X # far const volatile member (16-bit)
1640 // ::= Y # huge member (16-bit)
1641 // ::= Z # huge const member (16-bit)
1642 // ::= 0 # huge volatile member (16-bit)
1643 // ::= 1 # huge const volatile member (16-bit)
1644 // ::= 2 <basis> # based member
1645 // ::= 3 <basis> # based const member
1646 // ::= 4 <basis> # based volatile member
1647 // ::= 5 <basis> # based const volatile member
1648 // ::= 6 # near function (pointers only)
1649 // ::= 7 # far function (pointers only)
1650 // ::= 8 # near method (pointers only)
1651 // ::= 9 # far method (pointers only)
1652 // ::= _A <basis> # based function (pointers only)
1653 // ::= _B <basis> # based function (far?) (pointers only)
1654 // ::= _C <basis> # based method (pointers only)
1655 // ::= _D <basis> # based method (far?) (pointers only)
1656 // ::= _E # block (Clang)
1657 // <basis> ::= 0 # __based(void)
1658 // ::= 1 # __based(segment)?
1659 // ::= 2 <name> # __based(name)
1660 // ::= 3 # ?
1661 // ::= 4 # ?
1662 // ::= 5 # not really based
1663 bool HasConst = Quals.hasConst(),
1664 HasVolatile = Quals.hasVolatile();
1665
1666 if (!IsMember) {
1667 if (HasConst && HasVolatile) {
1668 Out << 'D';
1669 } else if (HasVolatile) {
1670 Out << 'C';
1671 } else if (HasConst) {
1672 Out << 'B';
1673 } else {
1674 Out << 'A';
1675 }
1676 } else {
1677 if (HasConst && HasVolatile) {
1678 Out << 'T';
1679 } else if (HasVolatile) {
1680 Out << 'S';
1681 } else if (HasConst) {
1682 Out << 'R';
1683 } else {
1684 Out << 'Q';
1685 }
1686 }
1687
1688 // FIXME: For now, just drop all extension qualifiers on the floor.
1689}
1690
1691void
1692MicrosoftCXXNameMangler::mangleRefQualifier(RefQualifierKind RefQualifier) {
1693 // <ref-qualifier> ::= G # lvalue reference
1694 // ::= H # rvalue-reference
1695 switch (RefQualifier) {
1696 case RQ_None:
1697 break;
1698
1699 case RQ_LValue:
1700 Out << 'G';
1701 break;
1702
1703 case RQ_RValue:
1704 Out << 'H';
1705 break;
1706 }
1707}
1708
1709void MicrosoftCXXNameMangler::manglePointerExtQualifiers(Qualifiers Quals,
1710 QualType PointeeType) {
1711 // Check if this is a default 64-bit pointer or has __ptr64 qualifier.
1712 bool is64Bit = PointeeType.isNull() ? PointersAre64Bit :
1713 is64BitPointer(PointeeType.getQualifiers());
1714 if (is64Bit && (PointeeType.isNull() || !PointeeType->isFunctionType()))
1715 Out << 'E';
1716
1717 if (Quals.hasRestrict())
1718 Out << 'I';
1719
1720 if (Quals.hasUnaligned() ||
1721 (!PointeeType.isNull() && PointeeType.getLocalQualifiers().hasUnaligned()))
1722 Out << 'F';
1723}
1724
1725void MicrosoftCXXNameMangler::manglePointerCVQualifiers(Qualifiers Quals) {
1726 // <pointer-cv-qualifiers> ::= P # no qualifiers
1727 // ::= Q # const
1728 // ::= R # volatile
1729 // ::= S # const volatile
1730 bool HasConst = Quals.hasConst(),
1731 HasVolatile = Quals.hasVolatile();
1732
1733 if (HasConst && HasVolatile) {
1734 Out << 'S';
1735 } else if (HasVolatile) {
1736 Out << 'R';
1737 } else if (HasConst) {
1738 Out << 'Q';
1739 } else {
1740 Out << 'P';
1741 }
1742}
1743
1744void MicrosoftCXXNameMangler::mangleFunctionArgumentType(QualType T,
1745 SourceRange Range) {
1746 // MSVC will backreference two canonically equivalent types that have slightly
1747 // different manglings when mangled alone.
1748
1749 // Decayed types do not match up with non-decayed versions of the same type.
1750 //
1751 // e.g.
1752 // void (*x)(void) will not form a backreference with void x(void)
1753 void *TypePtr;
1754 if (const auto *DT = T->getAs<DecayedType>()) {
1755 QualType OriginalType = DT->getOriginalType();
1756 // All decayed ArrayTypes should be treated identically; as-if they were
1757 // a decayed IncompleteArrayType.
1758 if (const auto *AT = getASTContext().getAsArrayType(OriginalType))
1759 OriginalType = getASTContext().getIncompleteArrayType(
1760 AT->getElementType(), AT->getSizeModifier(),
1761 AT->getIndexTypeCVRQualifiers());
1762
1763 TypePtr = OriginalType.getCanonicalType().getAsOpaquePtr();
1764 // If the original parameter was textually written as an array,
1765 // instead treat the decayed parameter like it's const.
1766 //
1767 // e.g.
1768 // int [] -> int * const
1769 if (OriginalType->isArrayType())
1770 T = T.withConst();
1771 } else {
1772 TypePtr = T.getCanonicalType().getAsOpaquePtr();
1773 }
1774
1775 ArgBackRefMap::iterator Found = FunArgBackReferences.find(TypePtr);
1776
1777 if (Found == FunArgBackReferences.end()) {
1778 size_t OutSizeBefore = Out.tell();
1779
1780 mangleType(T, Range, QMM_Drop);
1781
1782 // See if it's worth creating a back reference.
1783 // Only types longer than 1 character are considered
1784 // and only 10 back references slots are available:
1785 bool LongerThanOneChar = (Out.tell() - OutSizeBefore > 1);
1786 if (LongerThanOneChar && FunArgBackReferences.size() < 10) {
1787 size_t Size = FunArgBackReferences.size();
1788 FunArgBackReferences[TypePtr] = Size;
1789 }
1790 } else {
1791 Out << Found->second;
1792 }
1793}
1794
1795void MicrosoftCXXNameMangler::manglePassObjectSizeArg(
1796 const PassObjectSizeAttr *POSA) {
1797 int Type = POSA->getType();
1798 bool Dynamic = POSA->isDynamic();
1799
1800 auto Iter = PassObjectSizeArgs.insert({Type, Dynamic}).first;
1801 auto *TypePtr = (const void *)&*Iter;
1802 ArgBackRefMap::iterator Found = FunArgBackReferences.find(TypePtr);
1803
1804 if (Found == FunArgBackReferences.end()) {
1805 std::string Name =
1806 Dynamic ? "__pass_dynamic_object_size" : "__pass_object_size";
1807 mangleArtificialTagType(TTK_Enum, Name + llvm::utostr(Type), {"__clang"});
1808
1809 if (FunArgBackReferences.size() < 10) {
1810 size_t Size = FunArgBackReferences.size();
1811 FunArgBackReferences[TypePtr] = Size;
1812 }
1813 } else {
1814 Out << Found->second;
1815 }
1816}
1817
1818void MicrosoftCXXNameMangler::mangleAddressSpaceType(QualType T,
1819 Qualifiers Quals,
1820 SourceRange Range) {
1821 // Address space is mangled as an unqualified templated type in the __clang
1822 // namespace. The demangled version of this is:
1823 // In the case of a language specific address space:
1824 // __clang::struct _AS[language_addr_space]<Type>
1825 // where:
1826 // <language_addr_space> ::= <OpenCL-addrspace> | <CUDA-addrspace>
1827 // <OpenCL-addrspace> ::= "CL" [ "global" | "local" | "constant" |
1828 // "private"| "generic" ]
1829 // <CUDA-addrspace> ::= "CU" [ "device" | "constant" | "shared" ]
1830 // Note that the above were chosen to match the Itanium mangling for this.
1831 //
1832 // In the case of a non-language specific address space:
1833 // __clang::struct _AS<TargetAS, Type>
1834 assert(Quals.hasAddressSpace() && "Not valid without address space")((Quals.hasAddressSpace() && "Not valid without address space"
) ? static_cast<void> (0) : __assert_fail ("Quals.hasAddressSpace() && \"Not valid without address space\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 1834, __PRETTY_FUNCTION__))
;
1835 llvm::SmallString<32> ASMangling;
1836 llvm::raw_svector_ostream Stream(ASMangling);
1837 MicrosoftCXXNameMangler Extra(Context, Stream);
1838 Stream << "?$";
1839
1840 LangAS AS = Quals.getAddressSpace();
1841 if (Context.getASTContext().addressSpaceMapManglingFor(AS)) {
1842 unsigned TargetAS = Context.getASTContext().getTargetAddressSpace(AS);
1843 Extra.mangleSourceName("_AS");
1844 Extra.mangleIntegerLiteral(llvm::APSInt::getUnsigned(TargetAS),
1845 /*IsBoolean*/ false);
1846 } else {
1847 switch (AS) {
1848 default:
1849 llvm_unreachable("Not a language specific address space")::llvm::llvm_unreachable_internal("Not a language specific address space"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 1849)
;
1850 case LangAS::opencl_global:
1851 Extra.mangleSourceName("_ASCLglobal");
1852 break;
1853 case LangAS::opencl_local:
1854 Extra.mangleSourceName("_ASCLlocal");
1855 break;
1856 case LangAS::opencl_constant:
1857 Extra.mangleSourceName("_ASCLconstant");
1858 break;
1859 case LangAS::opencl_private:
1860 Extra.mangleSourceName("_ASCLprivate");
1861 break;
1862 case LangAS::opencl_generic:
1863 Extra.mangleSourceName("_ASCLgeneric");
1864 break;
1865 case LangAS::cuda_device:
1866 Extra.mangleSourceName("_ASCUdevice");
1867 break;
1868 case LangAS::cuda_constant:
1869 Extra.mangleSourceName("_ASCUconstant");
1870 break;
1871 case LangAS::cuda_shared:
1872 Extra.mangleSourceName("_ASCUshared");
1873 break;
1874 case LangAS::ptr32_sptr:
1875 case LangAS::ptr32_uptr:
1876 case LangAS::ptr64:
1877 llvm_unreachable("don't mangle ptr address spaces with _AS")::llvm::llvm_unreachable_internal("don't mangle ptr address spaces with _AS"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 1877)
;
1878 }
1879 }
1880
1881 Extra.mangleType(T, Range, QMM_Escape);
1882 mangleQualifiers(Qualifiers(), false);
1883 mangleArtificialTagType(TTK_Struct, ASMangling, {"__clang"});
1884}
1885
1886void MicrosoftCXXNameMangler::mangleType(QualType T, SourceRange Range,
1887 QualifierMangleMode QMM) {
1888 // Don't use the canonical types. MSVC includes things like 'const' on
1889 // pointer arguments to function pointers that canonicalization strips away.
1890 T = T.getDesugaredType(getASTContext());
1891 Qualifiers Quals = T.getLocalQualifiers();
1892
1893 if (const ArrayType *AT = getASTContext().getAsArrayType(T)) {
13
Assuming 'AT' is null
14
Taking false branch
1894 // If there were any Quals, getAsArrayType() pushed them onto the array
1895 // element type.
1896 if (QMM == QMM_Mangle)
1897 Out << 'A';
1898 else if (QMM == QMM_Escape || QMM == QMM_Result)
1899 Out << "$$B";
1900 mangleArrayType(AT);
1901 return;
1902 }
1903
1904 bool IsPointer = T->isAnyPointerType() || T->isMemberPointerType() ||
1905 T->isReferenceType() || T->isBlockPointerType();
1906
1907 switch (QMM) {
15
Control jumps to 'case QMM_Drop:' at line 1908
1908 case QMM_Drop:
1909 if (Quals.hasObjCLifetime())
16
Assuming the condition is false
17
Taking false branch
1910 Quals = Quals.withoutObjCLifetime();
1911 break;
18
Execution continues on line 1938
1912 case QMM_Mangle:
1913 if (const FunctionType *FT = dyn_cast<FunctionType>(T)) {
1914 Out << '6';
1915 mangleFunctionType(FT);
1916 return;
1917 }
1918 mangleQualifiers(Quals, false);
1919 break;
1920 case QMM_Escape:
1921 if (!IsPointer && Quals) {
1922 Out << "$$C";
1923 mangleQualifiers(Quals, false);
1924 }
1925 break;
1926 case QMM_Result:
1927 // Presence of __unaligned qualifier shouldn't affect mangling here.
1928 Quals.removeUnaligned();
1929 if (Quals.hasObjCLifetime())
1930 Quals = Quals.withoutObjCLifetime();
1931 if ((!IsPointer && Quals) || isa<TagType>(T) || isArtificialTagType(T)) {
1932 Out << '?';
1933 mangleQualifiers(Quals, false);
1934 }
1935 break;
1936 }
1937
1938 const Type *ty = T.getTypePtr();
1939
1940 switch (ty->getTypeClass()) {
19
Control jumps to 'case MemberPointer:' at line 48
1941#define ABSTRACT_TYPE(CLASS, PARENT)
1942#define NON_CANONICAL_TYPE(CLASS, PARENT) \
1943 case Type::CLASS: \
1944 llvm_unreachable("can't mangle non-canonical type " #CLASS "Type")::llvm::llvm_unreachable_internal("can't mangle non-canonical type "
#CLASS "Type", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 1944)
; \
1945 return;
1946#define TYPE(CLASS, PARENT) \
1947 case Type::CLASS: \
1948 mangleType(cast<CLASS##Type>(ty), Quals, Range); \
1949 break;
1950#include "clang/AST/TypeNodes.inc"
1951#undef ABSTRACT_TYPE
1952#undef NON_CANONICAL_TYPE
1953#undef TYPE
1954 }
1955}
1956
1957void MicrosoftCXXNameMangler::mangleType(const BuiltinType *T, Qualifiers,
1958 SourceRange Range) {
1959 // <type> ::= <builtin-type>
1960 // <builtin-type> ::= X # void
1961 // ::= C # signed char
1962 // ::= D # char
1963 // ::= E # unsigned char
1964 // ::= F # short
1965 // ::= G # unsigned short (or wchar_t if it's not a builtin)
1966 // ::= H # int
1967 // ::= I # unsigned int
1968 // ::= J # long
1969 // ::= K # unsigned long
1970 // L # <none>
1971 // ::= M # float
1972 // ::= N # double
1973 // ::= O # long double (__float80 is mangled differently)
1974 // ::= _J # long long, __int64
1975 // ::= _K # unsigned long long, __int64
1976 // ::= _L # __int128
1977 // ::= _M # unsigned __int128
1978 // ::= _N # bool
1979 // _O # <array in parameter>
1980 // ::= _Q # char8_t
1981 // ::= _S # char16_t
1982 // ::= _T # __float80 (Intel)
1983 // ::= _U # char32_t
1984 // ::= _W # wchar_t
1985 // ::= _Z # __float80 (Digital Mars)
1986 switch (T->getKind()) {
1987 case BuiltinType::Void:
1988 Out << 'X';
1989 break;
1990 case BuiltinType::SChar:
1991 Out << 'C';
1992 break;
1993 case BuiltinType::Char_U:
1994 case BuiltinType::Char_S:
1995 Out << 'D';
1996 break;
1997 case BuiltinType::UChar:
1998 Out << 'E';
1999 break;
2000 case BuiltinType::Short:
2001 Out << 'F';
2002 break;
2003 case BuiltinType::UShort:
2004 Out << 'G';
2005 break;
2006 case BuiltinType::Int:
2007 Out << 'H';
2008 break;
2009 case BuiltinType::UInt:
2010 Out << 'I';
2011 break;
2012 case BuiltinType::Long:
2013 Out << 'J';
2014 break;
2015 case BuiltinType::ULong:
2016 Out << 'K';
2017 break;
2018 case BuiltinType::Float:
2019 Out << 'M';
2020 break;
2021 case BuiltinType::Double:
2022 Out << 'N';
2023 break;
2024 // TODO: Determine size and mangle accordingly
2025 case BuiltinType::LongDouble:
2026 Out << 'O';
2027 break;
2028 case BuiltinType::LongLong:
2029 Out << "_J";
2030 break;
2031 case BuiltinType::ULongLong:
2032 Out << "_K";
2033 break;
2034 case BuiltinType::Int128:
2035 Out << "_L";
2036 break;
2037 case BuiltinType::UInt128:
2038 Out << "_M";
2039 break;
2040 case BuiltinType::Bool:
2041 Out << "_N";
2042 break;
2043 case BuiltinType::Char8:
2044 Out << "_Q";
2045 break;
2046 case BuiltinType::Char16:
2047 Out << "_S";
2048 break;
2049 case BuiltinType::Char32:
2050 Out << "_U";
2051 break;
2052 case BuiltinType::WChar_S:
2053 case BuiltinType::WChar_U:
2054 Out << "_W";
2055 break;
2056
2057#define BUILTIN_TYPE(Id, SingletonId)
2058#define PLACEHOLDER_TYPE(Id, SingletonId) \
2059 case BuiltinType::Id:
2060#include "clang/AST/BuiltinTypes.def"
2061 case BuiltinType::Dependent:
2062 llvm_unreachable("placeholder types shouldn't get to name mangling")::llvm::llvm_unreachable_internal("placeholder types shouldn't get to name mangling"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2062)
;
2063
2064 case BuiltinType::ObjCId:
2065 mangleArtificialTagType(TTK_Struct, "objc_object");
2066 break;
2067 case BuiltinType::ObjCClass:
2068 mangleArtificialTagType(TTK_Struct, "objc_class");
2069 break;
2070 case BuiltinType::ObjCSel:
2071 mangleArtificialTagType(TTK_Struct, "objc_selector");
2072 break;
2073
2074#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
2075 case BuiltinType::Id: \
2076 Out << "PAUocl_" #ImgType "_" #Suffix "@@"; \
2077 break;
2078#include "clang/Basic/OpenCLImageTypes.def"
2079 case BuiltinType::OCLSampler:
2080 Out << "PA";
2081 mangleArtificialTagType(TTK_Struct, "ocl_sampler");
2082 break;
2083 case BuiltinType::OCLEvent:
2084 Out << "PA";
2085 mangleArtificialTagType(TTK_Struct, "ocl_event");
2086 break;
2087 case BuiltinType::OCLClkEvent:
2088 Out << "PA";
2089 mangleArtificialTagType(TTK_Struct, "ocl_clkevent");
2090 break;
2091 case BuiltinType::OCLQueue:
2092 Out << "PA";
2093 mangleArtificialTagType(TTK_Struct, "ocl_queue");
2094 break;
2095 case BuiltinType::OCLReserveID:
2096 Out << "PA";
2097 mangleArtificialTagType(TTK_Struct, "ocl_reserveid");
2098 break;
2099#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
2100 case BuiltinType::Id: \
2101 mangleArtificialTagType(TTK_Struct, "ocl_" #ExtType); \
2102 break;
2103#include "clang/Basic/OpenCLExtensionTypes.def"
2104
2105 case BuiltinType::NullPtr:
2106 Out << "$$T";
2107 break;
2108
2109 case BuiltinType::Float16:
2110 mangleArtificialTagType(TTK_Struct, "_Float16", {"__clang"});
2111 break;
2112
2113 case BuiltinType::Half:
2114 mangleArtificialTagType(TTK_Struct, "_Half", {"__clang"});
2115 break;
2116
2117#define SVE_TYPE(Name, Id, SingletonId) \
2118 case BuiltinType::Id:
2119#include "clang/Basic/AArch64SVEACLETypes.def"
2120 case BuiltinType::ShortAccum:
2121 case BuiltinType::Accum:
2122 case BuiltinType::LongAccum:
2123 case BuiltinType::UShortAccum:
2124 case BuiltinType::UAccum:
2125 case BuiltinType::ULongAccum:
2126 case BuiltinType::ShortFract:
2127 case BuiltinType::Fract:
2128 case BuiltinType::LongFract:
2129 case BuiltinType::UShortFract:
2130 case BuiltinType::UFract:
2131 case BuiltinType::ULongFract:
2132 case BuiltinType::SatShortAccum:
2133 case BuiltinType::SatAccum:
2134 case BuiltinType::SatLongAccum:
2135 case BuiltinType::SatUShortAccum:
2136 case BuiltinType::SatUAccum:
2137 case BuiltinType::SatULongAccum:
2138 case BuiltinType::SatShortFract:
2139 case BuiltinType::SatFract:
2140 case BuiltinType::SatLongFract:
2141 case BuiltinType::SatUShortFract:
2142 case BuiltinType::SatUFract:
2143 case BuiltinType::SatULongFract:
2144 case BuiltinType::Float128: {
2145 DiagnosticsEngine &Diags = Context.getDiags();
2146 unsigned DiagID = Diags.getCustomDiagID(
2147 DiagnosticsEngine::Error, "cannot mangle this built-in %0 type yet");
2148 Diags.Report(Range.getBegin(), DiagID)
2149 << T->getName(Context.getASTContext().getPrintingPolicy()) << Range;
2150 break;
2151 }
2152 }
2153}
2154
2155// <type> ::= <function-type>
2156void MicrosoftCXXNameMangler::mangleType(const FunctionProtoType *T, Qualifiers,
2157 SourceRange) {
2158 // Structors only appear in decls, so at this point we know it's not a
2159 // structor type.
2160 // FIXME: This may not be lambda-friendly.
2161 if (T->getMethodQuals() || T->getRefQualifier() != RQ_None) {
2162 Out << "$$A8@@";
2163 mangleFunctionType(T, /*D=*/nullptr, /*ForceThisQuals=*/true);
2164 } else {
2165 Out << "$$A6";
2166 mangleFunctionType(T);
2167 }
2168}
2169void MicrosoftCXXNameMangler::mangleType(const FunctionNoProtoType *T,
2170 Qualifiers, SourceRange) {
2171 Out << "$$A6";
2172 mangleFunctionType(T);
2173}
2174
2175void MicrosoftCXXNameMangler::mangleFunctionType(const FunctionType *T,
2176 const FunctionDecl *D,
2177 bool ForceThisQuals,
2178 bool MangleExceptionSpec) {
2179 // <function-type> ::= <this-cvr-qualifiers> <calling-convention>
2180 // <return-type> <argument-list> <throw-spec>
2181 const FunctionProtoType *Proto = dyn_cast<FunctionProtoType>(T);
27
Assuming 'T' is not a 'FunctionProtoType'
28
'Proto' initialized to a null pointer value
2182
2183 SourceRange Range;
2184 if (D
28.1
'D' is null
28.1
'D' is null
) Range = D->getSourceRange();
29
Taking false branch
2185
2186 bool IsInLambda = false;
2187 bool IsStructor = false, HasThisQuals = ForceThisQuals, IsCtorClosure = false;
2188 CallingConv CC = T->getCallConv();
2189 if (const CXXMethodDecl *MD
30.1
'MD' is null
30.1
'MD' is null
= dyn_cast_or_null<CXXMethodDecl>(D)) {
30
Assuming null pointer is passed into cast
31
Taking false branch
2190 if (MD->getParent()->isLambda())
2191 IsInLambda = true;
2192 if (MD->isInstance())
2193 HasThisQuals = true;
2194 if (isa<CXXDestructorDecl>(MD)) {
2195 IsStructor = true;
2196 } else if (isa<CXXConstructorDecl>(MD)) {
2197 IsStructor = true;
2198 IsCtorClosure = (StructorType == Ctor_CopyingClosure ||
2199 StructorType == Ctor_DefaultClosure) &&
2200 isStructorDecl(MD);
2201 if (IsCtorClosure)
2202 CC = getASTContext().getDefaultCallingConvention(
2203 /*IsVariadic=*/false, /*IsCXXMethod=*/true);
2204 }
2205 }
2206
2207 // If this is a C++ instance method, mangle the CVR qualifiers for the
2208 // this pointer.
2209 if (HasThisQuals
31.1
'HasThisQuals' is true
31.1
'HasThisQuals' is true
) {
32
Taking true branch
2210 Qualifiers Quals = Proto->getMethodQuals();
33
Called C++ object pointer is null
2211 manglePointerExtQualifiers(Quals, /*PointeeType=*/QualType());
2212 mangleRefQualifier(Proto->getRefQualifier());
2213 mangleQualifiers(Quals, /*IsMember=*/false);
2214 }
2215
2216 mangleCallingConvention(CC);
2217
2218 // <return-type> ::= <type>
2219 // ::= @ # structors (they have no declared return type)
2220 if (IsStructor) {
2221 if (isa<CXXDestructorDecl>(D) && isStructorDecl(D)) {
2222 // The scalar deleting destructor takes an extra int argument which is not
2223 // reflected in the AST.
2224 if (StructorType == Dtor_Deleting) {
2225 Out << (PointersAre64Bit ? "PEAXI@Z" : "PAXI@Z");
2226 return;
2227 }
2228 // The vbase destructor returns void which is not reflected in the AST.
2229 if (StructorType == Dtor_Complete) {
2230 Out << "XXZ";
2231 return;
2232 }
2233 }
2234 if (IsCtorClosure) {
2235 // Default constructor closure and copy constructor closure both return
2236 // void.
2237 Out << 'X';
2238
2239 if (StructorType == Ctor_DefaultClosure) {
2240 // Default constructor closure always has no arguments.
2241 Out << 'X';
2242 } else if (StructorType == Ctor_CopyingClosure) {
2243 // Copy constructor closure always takes an unqualified reference.
2244 mangleFunctionArgumentType(getASTContext().getLValueReferenceType(
2245 Proto->getParamType(0)
2246 ->getAs<LValueReferenceType>()
2247 ->getPointeeType(),
2248 /*SpelledAsLValue=*/true),
2249 Range);
2250 Out << '@';
2251 } else {
2252 llvm_unreachable("unexpected constructor closure!")::llvm::llvm_unreachable_internal("unexpected constructor closure!"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2252)
;
2253 }
2254 Out << 'Z';
2255 return;
2256 }
2257 Out << '@';
2258 } else {
2259 QualType ResultType = T->getReturnType();
2260 if (const auto *AT =
2261 dyn_cast_or_null<AutoType>(ResultType->getContainedAutoType())) {
2262 Out << '?';
2263 mangleQualifiers(ResultType.getLocalQualifiers(), /*IsMember=*/false);
2264 Out << '?';
2265 assert(AT->getKeyword() != AutoTypeKeyword::GNUAutoType &&((AT->getKeyword() != AutoTypeKeyword::GNUAutoType &&
"shouldn't need to mangle __auto_type!") ? static_cast<void
> (0) : __assert_fail ("AT->getKeyword() != AutoTypeKeyword::GNUAutoType && \"shouldn't need to mangle __auto_type!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2266, __PRETTY_FUNCTION__))
2266 "shouldn't need to mangle __auto_type!")((AT->getKeyword() != AutoTypeKeyword::GNUAutoType &&
"shouldn't need to mangle __auto_type!") ? static_cast<void
> (0) : __assert_fail ("AT->getKeyword() != AutoTypeKeyword::GNUAutoType && \"shouldn't need to mangle __auto_type!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2266, __PRETTY_FUNCTION__))
;
2267 mangleSourceName(AT->isDecltypeAuto() ? "<decltype-auto>" : "<auto>");
2268 Out << '@';
2269 } else if (IsInLambda) {
2270 Out << '@';
2271 } else {
2272 if (ResultType->isVoidType())
2273 ResultType = ResultType.getUnqualifiedType();
2274 mangleType(ResultType, Range, QMM_Result);
2275 }
2276 }
2277
2278 // <argument-list> ::= X # void
2279 // ::= <type>+ @
2280 // ::= <type>* Z # varargs
2281 if (!Proto) {
2282 // Function types without prototypes can arise when mangling a function type
2283 // within an overloadable function in C. We mangle these as the absence of
2284 // any parameter types (not even an empty parameter list).
2285 Out << '@';
2286 } else if (Proto->getNumParams() == 0 && !Proto->isVariadic()) {
2287 Out << 'X';
2288 } else {
2289 // Happens for function pointer type arguments for example.
2290 for (unsigned I = 0, E = Proto->getNumParams(); I != E; ++I) {
2291 mangleFunctionArgumentType(Proto->getParamType(I), Range);
2292 // Mangle each pass_object_size parameter as if it's a parameter of enum
2293 // type passed directly after the parameter with the pass_object_size
2294 // attribute. The aforementioned enum's name is __pass_object_size, and we
2295 // pretend it resides in a top-level namespace called __clang.
2296 //
2297 // FIXME: Is there a defined extension notation for the MS ABI, or is it
2298 // necessary to just cross our fingers and hope this type+namespace
2299 // combination doesn't conflict with anything?
2300 if (D)
2301 if (const auto *P = D->getParamDecl(I)->getAttr<PassObjectSizeAttr>())
2302 manglePassObjectSizeArg(P);
2303 }
2304 // <builtin-type> ::= Z # ellipsis
2305 if (Proto->isVariadic())
2306 Out << 'Z';
2307 else
2308 Out << '@';
2309 }
2310
2311 if (MangleExceptionSpec && getASTContext().getLangOpts().CPlusPlus17 &&
2312 getASTContext().getLangOpts().isCompatibleWithMSVC(
2313 LangOptions::MSVC2017_5))
2314 mangleThrowSpecification(Proto);
2315 else
2316 Out << 'Z';
2317}
2318
2319void MicrosoftCXXNameMangler::mangleFunctionClass(const FunctionDecl *FD) {
2320 // <function-class> ::= <member-function> E? # E designates a 64-bit 'this'
2321 // # pointer. in 64-bit mode *all*
2322 // # 'this' pointers are 64-bit.
2323 // ::= <global-function>
2324 // <member-function> ::= A # private: near
2325 // ::= B # private: far
2326 // ::= C # private: static near
2327 // ::= D # private: static far
2328 // ::= E # private: virtual near
2329 // ::= F # private: virtual far
2330 // ::= I # protected: near
2331 // ::= J # protected: far
2332 // ::= K # protected: static near
2333 // ::= L # protected: static far
2334 // ::= M # protected: virtual near
2335 // ::= N # protected: virtual far
2336 // ::= Q # public: near
2337 // ::= R # public: far
2338 // ::= S # public: static near
2339 // ::= T # public: static far
2340 // ::= U # public: virtual near
2341 // ::= V # public: virtual far
2342 // <global-function> ::= Y # global near
2343 // ::= Z # global far
2344 if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) {
2345 bool IsVirtual = MD->isVirtual();
2346 // When mangling vbase destructor variants, ignore whether or not the
2347 // underlying destructor was defined to be virtual.
2348 if (isa<CXXDestructorDecl>(MD) && isStructorDecl(MD) &&
2349 StructorType == Dtor_Complete) {
2350 IsVirtual = false;
2351 }
2352 switch (MD->getAccess()) {
2353 case AS_none:
2354 llvm_unreachable("Unsupported access specifier")::llvm::llvm_unreachable_internal("Unsupported access specifier"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2354)
;
2355 case AS_private:
2356 if (MD->isStatic())
2357 Out << 'C';
2358 else if (IsVirtual)
2359 Out << 'E';
2360 else
2361 Out << 'A';
2362 break;
2363 case AS_protected:
2364 if (MD->isStatic())
2365 Out << 'K';
2366 else if (IsVirtual)
2367 Out << 'M';
2368 else
2369 Out << 'I';
2370 break;
2371 case AS_public:
2372 if (MD->isStatic())
2373 Out << 'S';
2374 else if (IsVirtual)
2375 Out << 'U';
2376 else
2377 Out << 'Q';
2378 }
2379 } else {
2380 Out << 'Y';
2381 }
2382}
2383void MicrosoftCXXNameMangler::mangleCallingConvention(CallingConv CC) {
2384 // <calling-convention> ::= A # __cdecl
2385 // ::= B # __export __cdecl
2386 // ::= C # __pascal
2387 // ::= D # __export __pascal
2388 // ::= E # __thiscall
2389 // ::= F # __export __thiscall
2390 // ::= G # __stdcall
2391 // ::= H # __export __stdcall
2392 // ::= I # __fastcall
2393 // ::= J # __export __fastcall
2394 // ::= Q # __vectorcall
2395 // ::= w # __regcall
2396 // The 'export' calling conventions are from a bygone era
2397 // (*cough*Win16*cough*) when functions were declared for export with
2398 // that keyword. (It didn't actually export them, it just made them so
2399 // that they could be in a DLL and somebody from another module could call
2400 // them.)
2401
2402 switch (CC) {
2403 default:
2404 llvm_unreachable("Unsupported CC for mangling")::llvm::llvm_unreachable_internal("Unsupported CC for mangling"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2404)
;
2405 case CC_Win64:
2406 case CC_X86_64SysV:
2407 case CC_C: Out << 'A'; break;
2408 case CC_X86Pascal: Out << 'C'; break;
2409 case CC_X86ThisCall: Out << 'E'; break;
2410 case CC_X86StdCall: Out << 'G'; break;
2411 case CC_X86FastCall: Out << 'I'; break;
2412 case CC_X86VectorCall: Out << 'Q'; break;
2413 case CC_Swift: Out << 'S'; break;
2414 case CC_PreserveMost: Out << 'U'; break;
2415 case CC_X86RegCall: Out << 'w'; break;
2416 }
2417}
2418void MicrosoftCXXNameMangler::mangleCallingConvention(const FunctionType *T) {
2419 mangleCallingConvention(T->getCallConv());
2420}
2421
2422void MicrosoftCXXNameMangler::mangleThrowSpecification(
2423 const FunctionProtoType *FT) {
2424 // <throw-spec> ::= Z # (default)
2425 // ::= _E # noexcept
2426 if (FT->canThrow())
2427 Out << 'Z';
2428 else
2429 Out << "_E";
2430}
2431
2432void MicrosoftCXXNameMangler::mangleType(const UnresolvedUsingType *T,
2433 Qualifiers, SourceRange Range) {
2434 // Probably should be mangled as a template instantiation; need to see what
2435 // VC does first.
2436 DiagnosticsEngine &Diags = Context.getDiags();
2437 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2438 "cannot mangle this unresolved dependent type yet");
2439 Diags.Report(Range.getBegin(), DiagID)
2440 << Range;
2441}
2442
2443// <type> ::= <union-type> | <struct-type> | <class-type> | <enum-type>
2444// <union-type> ::= T <name>
2445// <struct-type> ::= U <name>
2446// <class-type> ::= V <name>
2447// <enum-type> ::= W4 <name>
2448void MicrosoftCXXNameMangler::mangleTagTypeKind(TagTypeKind TTK) {
2449 switch (TTK) {
2450 case TTK_Union:
2451 Out << 'T';
2452 break;
2453 case TTK_Struct:
2454 case TTK_Interface:
2455 Out << 'U';
2456 break;
2457 case TTK_Class:
2458 Out << 'V';
2459 break;
2460 case TTK_Enum:
2461 Out << "W4";
2462 break;
2463 }
2464}
2465void MicrosoftCXXNameMangler::mangleType(const EnumType *T, Qualifiers,
2466 SourceRange) {
2467 mangleType(cast<TagType>(T)->getDecl());
2468}
2469void MicrosoftCXXNameMangler::mangleType(const RecordType *T, Qualifiers,
2470 SourceRange) {
2471 mangleType(cast<TagType>(T)->getDecl());
2472}
2473void MicrosoftCXXNameMangler::mangleType(const TagDecl *TD) {
2474 mangleTagTypeKind(TD->getTagKind());
2475 mangleName(TD);
2476}
2477
2478// If you add a call to this, consider updating isArtificialTagType() too.
2479void MicrosoftCXXNameMangler::mangleArtificialTagType(
2480 TagTypeKind TK, StringRef UnqualifiedName,
2481 ArrayRef<StringRef> NestedNames) {
2482 // <name> ::= <unscoped-name> {[<named-scope>]+ | [<nested-name>]}? @
2483 mangleTagTypeKind(TK);
2484
2485 // Always start with the unqualified name.
2486 mangleSourceName(UnqualifiedName);
2487
2488 for (auto I = NestedNames.rbegin(), E = NestedNames.rend(); I != E; ++I)
2489 mangleSourceName(*I);
2490
2491 // Terminate the whole name with an '@'.
2492 Out << '@';
2493}
2494
2495// <type> ::= <array-type>
2496// <array-type> ::= <pointer-cvr-qualifiers> <cvr-qualifiers>
2497// [Y <dimension-count> <dimension>+]
2498// <element-type> # as global, E is never required
2499// It's supposed to be the other way around, but for some strange reason, it
2500// isn't. Today this behavior is retained for the sole purpose of backwards
2501// compatibility.
2502void MicrosoftCXXNameMangler::mangleDecayedArrayType(const ArrayType *T) {
2503 // This isn't a recursive mangling, so now we have to do it all in this
2504 // one call.
2505 manglePointerCVQualifiers(T->getElementType().getQualifiers());
2506 mangleType(T->getElementType(), SourceRange());
2507}
2508void MicrosoftCXXNameMangler::mangleType(const ConstantArrayType *T, Qualifiers,
2509 SourceRange) {
2510 llvm_unreachable("Should have been special cased")::llvm::llvm_unreachable_internal("Should have been special cased"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2510)
;
2511}
2512void MicrosoftCXXNameMangler::mangleType(const VariableArrayType *T, Qualifiers,
2513 SourceRange) {
2514 llvm_unreachable("Should have been special cased")::llvm::llvm_unreachable_internal("Should have been special cased"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2514)
;
2515}
2516void MicrosoftCXXNameMangler::mangleType(const DependentSizedArrayType *T,
2517 Qualifiers, SourceRange) {
2518 llvm_unreachable("Should have been special cased")::llvm::llvm_unreachable_internal("Should have been special cased"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2518)
;
2519}
2520void MicrosoftCXXNameMangler::mangleType(const IncompleteArrayType *T,
2521 Qualifiers, SourceRange) {
2522 llvm_unreachable("Should have been special cased")::llvm::llvm_unreachable_internal("Should have been special cased"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2522)
;
2523}
2524void MicrosoftCXXNameMangler::mangleArrayType(const ArrayType *T) {
2525 QualType ElementTy(T, 0);
2526 SmallVector<llvm::APInt, 3> Dimensions;
2527 for (;;) {
2528 if (ElementTy->isConstantArrayType()) {
2529 const ConstantArrayType *CAT =
2530 getASTContext().getAsConstantArrayType(ElementTy);
2531 Dimensions.push_back(CAT->getSize());
2532 ElementTy = CAT->getElementType();
2533 } else if (ElementTy->isIncompleteArrayType()) {
2534 const IncompleteArrayType *IAT =
2535 getASTContext().getAsIncompleteArrayType(ElementTy);
2536 Dimensions.push_back(llvm::APInt(32, 0));
2537 ElementTy = IAT->getElementType();
2538 } else if (ElementTy->isVariableArrayType()) {
2539 const VariableArrayType *VAT =
2540 getASTContext().getAsVariableArrayType(ElementTy);
2541 Dimensions.push_back(llvm::APInt(32, 0));
2542 ElementTy = VAT->getElementType();
2543 } else if (ElementTy->isDependentSizedArrayType()) {
2544 // The dependent expression has to be folded into a constant (TODO).
2545 const DependentSizedArrayType *DSAT =
2546 getASTContext().getAsDependentSizedArrayType(ElementTy);
2547 DiagnosticsEngine &Diags = Context.getDiags();
2548 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2549 "cannot mangle this dependent-length array yet");
2550 Diags.Report(DSAT->getSizeExpr()->getExprLoc(), DiagID)
2551 << DSAT->getBracketsRange();
2552 return;
2553 } else {
2554 break;
2555 }
2556 }
2557 Out << 'Y';
2558 // <dimension-count> ::= <number> # number of extra dimensions
2559 mangleNumber(Dimensions.size());
2560 for (const llvm::APInt &Dimension : Dimensions)
2561 mangleNumber(Dimension.getLimitedValue());
2562 mangleType(ElementTy, SourceRange(), QMM_Escape);
2563}
2564
2565// <type> ::= <pointer-to-member-type>
2566// <pointer-to-member-type> ::= <pointer-cvr-qualifiers> <cvr-qualifiers>
2567// <class name> <type>
2568void MicrosoftCXXNameMangler::mangleType(const MemberPointerType *T,
2569 Qualifiers Quals, SourceRange Range) {
2570 QualType PointeeType = T->getPointeeType();
2571 manglePointerCVQualifiers(Quals);
2572 manglePointerExtQualifiers(Quals, PointeeType);
2573 if (const FunctionProtoType *FPT = PointeeType->getAs<FunctionProtoType>()) {
22
Assuming the object is a 'FunctionProtoType'
23
Assuming 'FPT' is non-null
24
Taking true branch
2574 Out << '8';
2575 mangleName(T->getClass()->castAs<RecordType>()->getDecl());
25
The object is a 'RecordType'
2576 mangleFunctionType(FPT, nullptr, true);
26
Calling 'MicrosoftCXXNameMangler::mangleFunctionType'
2577 } else {
2578 mangleQualifiers(PointeeType.getQualifiers(), true);
2579 mangleName(T->getClass()->castAs<RecordType>()->getDecl());
2580 mangleType(PointeeType, Range, QMM_Drop);
2581 }
2582}
2583
2584void MicrosoftCXXNameMangler::mangleType(const TemplateTypeParmType *T,
2585 Qualifiers, SourceRange Range) {
2586 DiagnosticsEngine &Diags = Context.getDiags();
2587 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2588 "cannot mangle this template type parameter type yet");
2589 Diags.Report(Range.getBegin(), DiagID)
2590 << Range;
2591}
2592
2593void MicrosoftCXXNameMangler::mangleType(const SubstTemplateTypeParmPackType *T,
2594 Qualifiers, SourceRange Range) {
2595 DiagnosticsEngine &Diags = Context.getDiags();
2596 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2597 "cannot mangle this substituted parameter pack yet");
2598 Diags.Report(Range.getBegin(), DiagID)
2599 << Range;
2600}
2601
2602// <type> ::= <pointer-type>
2603// <pointer-type> ::= E? <pointer-cvr-qualifiers> <cvr-qualifiers> <type>
2604// # the E is required for 64-bit non-static pointers
2605void MicrosoftCXXNameMangler::mangleType(const PointerType *T, Qualifiers Quals,
2606 SourceRange Range) {
2607 QualType PointeeType = T->getPointeeType();
2608 manglePointerCVQualifiers(Quals);
2609 manglePointerExtQualifiers(Quals, PointeeType);
2610
2611 // For pointer size address spaces, go down the same type mangling path as
2612 // non address space types.
2613 LangAS AddrSpace = PointeeType.getQualifiers().getAddressSpace();
2614 if (isPtrSizeAddressSpace(AddrSpace) || AddrSpace == LangAS::Default)
2615 mangleType(PointeeType, Range);
2616 else
2617 mangleAddressSpaceType(PointeeType, PointeeType.getQualifiers(), Range);
2618}
2619
2620void MicrosoftCXXNameMangler::mangleType(const ObjCObjectPointerType *T,
2621 Qualifiers Quals, SourceRange Range) {
2622 QualType PointeeType = T->getPointeeType();
2623 switch (Quals.getObjCLifetime()) {
2624 case Qualifiers::OCL_None:
2625 case Qualifiers::OCL_ExplicitNone:
2626 break;
2627 case Qualifiers::OCL_Autoreleasing:
2628 case Qualifiers::OCL_Strong:
2629 case Qualifiers::OCL_Weak:
2630 return mangleObjCLifetime(PointeeType, Quals, Range);
2631 }
2632 manglePointerCVQualifiers(Quals);
2633 manglePointerExtQualifiers(Quals, PointeeType);
2634 mangleType(PointeeType, Range);
2635}
2636
2637// <type> ::= <reference-type>
2638// <reference-type> ::= A E? <cvr-qualifiers> <type>
2639// # the E is required for 64-bit non-static lvalue references
2640void MicrosoftCXXNameMangler::mangleType(const LValueReferenceType *T,
2641 Qualifiers Quals, SourceRange Range) {
2642 QualType PointeeType = T->getPointeeType();
2643 assert(!Quals.hasConst() && !Quals.hasVolatile() && "unexpected qualifier!")((!Quals.hasConst() && !Quals.hasVolatile() &&
"unexpected qualifier!") ? static_cast<void> (0) : __assert_fail
("!Quals.hasConst() && !Quals.hasVolatile() && \"unexpected qualifier!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2643, __PRETTY_FUNCTION__))
;
2644 Out << 'A';
2645 manglePointerExtQualifiers(Quals, PointeeType);
2646 mangleType(PointeeType, Range);
2647}
2648
2649// <type> ::= <r-value-reference-type>
2650// <r-value-reference-type> ::= $$Q E? <cvr-qualifiers> <type>
2651// # the E is required for 64-bit non-static rvalue references
2652void MicrosoftCXXNameMangler::mangleType(const RValueReferenceType *T,
2653 Qualifiers Quals, SourceRange Range) {
2654 QualType PointeeType = T->getPointeeType();
2655 assert(!Quals.hasConst() && !Quals.hasVolatile() && "unexpected qualifier!")((!Quals.hasConst() && !Quals.hasVolatile() &&
"unexpected qualifier!") ? static_cast<void> (0) : __assert_fail
("!Quals.hasConst() && !Quals.hasVolatile() && \"unexpected qualifier!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2655, __PRETTY_FUNCTION__))
;
2656 Out << "$$Q";
2657 manglePointerExtQualifiers(Quals, PointeeType);
2658 mangleType(PointeeType, Range);
2659}
2660
2661void MicrosoftCXXNameMangler::mangleType(const ComplexType *T, Qualifiers,
2662 SourceRange Range) {
2663 QualType ElementType = T->getElementType();
2664
2665 llvm::SmallString<64> TemplateMangling;
2666 llvm::raw_svector_ostream Stream(TemplateMangling);
2667 MicrosoftCXXNameMangler Extra(Context, Stream);
2668 Stream << "?$";
2669 Extra.mangleSourceName("_Complex");
2670 Extra.mangleType(ElementType, Range, QMM_Escape);
2671
2672 mangleArtificialTagType(TTK_Struct, TemplateMangling, {"__clang"});
2673}
2674
2675// Returns true for types that mangleArtificialTagType() gets called for with
2676// TTK_Union, TTK_Struct, TTK_Class and where compatibility with MSVC's
2677// mangling matters.
2678// (It doesn't matter for Objective-C types and the like that cl.exe doesn't
2679// support.)
2680bool MicrosoftCXXNameMangler::isArtificialTagType(QualType T) const {
2681 const Type *ty = T.getTypePtr();
2682 switch (ty->getTypeClass()) {
2683 default:
2684 return false;
2685
2686 case Type::Vector: {
2687 // For ABI compatibility only __m64, __m128(id), and __m256(id) matter,
2688 // but since mangleType(VectorType*) always calls mangleArtificialTagType()
2689 // just always return true (the other vector types are clang-only).
2690 return true;
2691 }
2692 }
2693}
2694
2695void MicrosoftCXXNameMangler::mangleType(const VectorType *T, Qualifiers Quals,
2696 SourceRange Range) {
2697 const BuiltinType *ET = T->getElementType()->getAs<BuiltinType>();
2698 assert(ET && "vectors with non-builtin elements are unsupported")((ET && "vectors with non-builtin elements are unsupported"
) ? static_cast<void> (0) : __assert_fail ("ET && \"vectors with non-builtin elements are unsupported\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2698, __PRETTY_FUNCTION__))
;
2699 uint64_t Width = getASTContext().getTypeSize(T);
2700 // Pattern match exactly the typedefs in our intrinsic headers. Anything that
2701 // doesn't match the Intel types uses a custom mangling below.
2702 size_t OutSizeBefore = Out.tell();
2703 if (!isa<ExtVectorType>(T)) {
2704 if (getASTContext().getTargetInfo().getTriple().isX86()) {
2705 if (Width == 64 && ET->getKind() == BuiltinType::LongLong) {
2706 mangleArtificialTagType(TTK_Union, "__m64");
2707 } else if (Width >= 128) {
2708 if (ET->getKind() == BuiltinType::Float)
2709 mangleArtificialTagType(TTK_Union, "__m" + llvm::utostr(Width));
2710 else if (ET->getKind() == BuiltinType::LongLong)
2711 mangleArtificialTagType(TTK_Union, "__m" + llvm::utostr(Width) + 'i');
2712 else if (ET->getKind() == BuiltinType::Double)
2713 mangleArtificialTagType(TTK_Struct, "__m" + llvm::utostr(Width) + 'd');
2714 }
2715 }
2716 }
2717
2718 bool IsBuiltin = Out.tell() != OutSizeBefore;
2719 if (!IsBuiltin) {
2720 // The MS ABI doesn't have a special mangling for vector types, so we define
2721 // our own mangling to handle uses of __vector_size__ on user-specified
2722 // types, and for extensions like __v4sf.
2723
2724 llvm::SmallString<64> TemplateMangling;
2725 llvm::raw_svector_ostream Stream(TemplateMangling);
2726 MicrosoftCXXNameMangler Extra(Context, Stream);
2727 Stream << "?$";
2728 Extra.mangleSourceName("__vector");
2729 Extra.mangleType(QualType(ET, 0), Range, QMM_Escape);
2730 Extra.mangleIntegerLiteral(llvm::APSInt::getUnsigned(T->getNumElements()),
2731 /*IsBoolean=*/false);
2732
2733 mangleArtificialTagType(TTK_Union, TemplateMangling, {"__clang"});
2734 }
2735}
2736
2737void MicrosoftCXXNameMangler::mangleType(const ExtVectorType *T,
2738 Qualifiers Quals, SourceRange Range) {
2739 mangleType(static_cast<const VectorType *>(T), Quals, Range);
2740}
2741
2742void MicrosoftCXXNameMangler::mangleType(const DependentVectorType *T,
2743 Qualifiers, SourceRange Range) {
2744 DiagnosticsEngine &Diags = Context.getDiags();
2745 unsigned DiagID = Diags.getCustomDiagID(
2746 DiagnosticsEngine::Error,
2747 "cannot mangle this dependent-sized vector type yet");
2748 Diags.Report(Range.getBegin(), DiagID) << Range;
2749}
2750
2751void MicrosoftCXXNameMangler::mangleType(const DependentSizedExtVectorType *T,
2752 Qualifiers, SourceRange Range) {
2753 DiagnosticsEngine &Diags = Context.getDiags();
2754 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2755 "cannot mangle this dependent-sized extended vector type yet");
2756 Diags.Report(Range.getBegin(), DiagID)
2757 << Range;
2758}
2759
2760void MicrosoftCXXNameMangler::mangleType(const DependentAddressSpaceType *T,
2761 Qualifiers, SourceRange Range) {
2762 DiagnosticsEngine &Diags = Context.getDiags();
2763 unsigned DiagID = Diags.getCustomDiagID(
2764 DiagnosticsEngine::Error,
2765 "cannot mangle this dependent address space type yet");
2766 Diags.Report(Range.getBegin(), DiagID) << Range;
2767}
2768
2769void MicrosoftCXXNameMangler::mangleType(const ObjCInterfaceType *T, Qualifiers,
2770 SourceRange) {
2771 // ObjC interfaces have structs underlying them.
2772 mangleTagTypeKind(TTK_Struct);
2773 mangleName(T->getDecl());
2774}
2775
2776void MicrosoftCXXNameMangler::mangleType(const ObjCObjectType *T,
2777 Qualifiers Quals, SourceRange Range) {
2778 if (T->isKindOfType())
2779 return mangleObjCKindOfType(T, Quals, Range);
2780
2781 if (T->qual_empty() && !T->isSpecialized())
2782 return mangleType(T->getBaseType(), Range, QMM_Drop);
2783
2784 ArgBackRefMap OuterFunArgsContext;
2785 ArgBackRefMap OuterTemplateArgsContext;
2786 BackRefVec OuterTemplateContext;
2787
2788 FunArgBackReferences.swap(OuterFunArgsContext);
2789 TemplateArgBackReferences.swap(OuterTemplateArgsContext);
2790 NameBackReferences.swap(OuterTemplateContext);
2791
2792 mangleTagTypeKind(TTK_Struct);
2793
2794 Out << "?$";
2795 if (T->isObjCId())
2796 mangleSourceName("objc_object");
2797 else if (T->isObjCClass())
2798 mangleSourceName("objc_class");
2799 else
2800 mangleSourceName(T->getInterface()->getName());
2801
2802 for (const auto &Q : T->quals())
2803 mangleObjCProtocol(Q);
2804
2805 if (T->isSpecialized())
2806 for (const auto &TA : T->getTypeArgs())
2807 mangleType(TA, Range, QMM_Drop);
2808
2809 Out << '@';
2810
2811 Out << '@';
2812
2813 FunArgBackReferences.swap(OuterFunArgsContext);
2814 TemplateArgBackReferences.swap(OuterTemplateArgsContext);
2815 NameBackReferences.swap(OuterTemplateContext);
2816}
2817
2818void MicrosoftCXXNameMangler::mangleType(const BlockPointerType *T,
2819 Qualifiers Quals, SourceRange Range) {
2820 QualType PointeeType = T->getPointeeType();
2821 manglePointerCVQualifiers(Quals);
2822 manglePointerExtQualifiers(Quals, PointeeType);
2823
2824 Out << "_E";
2825
2826 mangleFunctionType(PointeeType->castAs<FunctionProtoType>());
2827}
2828
2829void MicrosoftCXXNameMangler::mangleType(const InjectedClassNameType *,
2830 Qualifiers, SourceRange) {
2831 llvm_unreachable("Cannot mangle injected class name type.")::llvm::llvm_unreachable_internal("Cannot mangle injected class name type."
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2831)
;
2832}
2833
2834void MicrosoftCXXNameMangler::mangleType(const TemplateSpecializationType *T,
2835 Qualifiers, SourceRange Range) {
2836 DiagnosticsEngine &Diags = Context.getDiags();
2837 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2838 "cannot mangle this template specialization type yet");
2839 Diags.Report(Range.getBegin(), DiagID)
2840 << Range;
2841}
2842
2843void MicrosoftCXXNameMangler::mangleType(const DependentNameType *T, Qualifiers,
2844 SourceRange Range) {
2845 DiagnosticsEngine &Diags = Context.getDiags();
2846 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2847 "cannot mangle this dependent name type yet");
2848 Diags.Report(Range.getBegin(), DiagID)
2849 << Range;
2850}
2851
2852void MicrosoftCXXNameMangler::mangleType(
2853 const DependentTemplateSpecializationType *T, Qualifiers,
2854 SourceRange Range) {
2855 DiagnosticsEngine &Diags = Context.getDiags();
2856 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2857 "cannot mangle this dependent template specialization type yet");
2858 Diags.Report(Range.getBegin(), DiagID)
2859 << Range;
2860}
2861
2862void MicrosoftCXXNameMangler::mangleType(const PackExpansionType *T, Qualifiers,
2863 SourceRange Range) {
2864 DiagnosticsEngine &Diags = Context.getDiags();
2865 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2866 "cannot mangle this pack expansion yet");
2867 Diags.Report(Range.getBegin(), DiagID)
2868 << Range;
2869}
2870
2871void MicrosoftCXXNameMangler::mangleType(const TypeOfType *T, Qualifiers,
2872 SourceRange Range) {
2873 DiagnosticsEngine &Diags = Context.getDiags();
2874 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2875 "cannot mangle this typeof(type) yet");
2876 Diags.Report(Range.getBegin(), DiagID)
2877 << Range;
2878}
2879
2880void MicrosoftCXXNameMangler::mangleType(const TypeOfExprType *T, Qualifiers,
2881 SourceRange Range) {
2882 DiagnosticsEngine &Diags = Context.getDiags();
2883 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2884 "cannot mangle this typeof(expression) yet");
2885 Diags.Report(Range.getBegin(), DiagID)
2886 << Range;
2887}
2888
2889void MicrosoftCXXNameMangler::mangleType(const DecltypeType *T, Qualifiers,
2890 SourceRange Range) {
2891 DiagnosticsEngine &Diags = Context.getDiags();
2892 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2893 "cannot mangle this decltype() yet");
2894 Diags.Report(Range.getBegin(), DiagID)
2895 << Range;
2896}
2897
2898void MicrosoftCXXNameMangler::mangleType(const UnaryTransformType *T,
2899 Qualifiers, SourceRange Range) {
2900 DiagnosticsEngine &Diags = Context.getDiags();
2901 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2902 "cannot mangle this unary transform type yet");
2903 Diags.Report(Range.getBegin(), DiagID)
2904 << Range;
2905}
2906
2907void MicrosoftCXXNameMangler::mangleType(const AutoType *T, Qualifiers,
2908 SourceRange Range) {
2909 assert(T->getDeducedType().isNull() && "expecting a dependent type!")((T->getDeducedType().isNull() && "expecting a dependent type!"
) ? static_cast<void> (0) : __assert_fail ("T->getDeducedType().isNull() && \"expecting a dependent type!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2909, __PRETTY_FUNCTION__))
;
2910
2911 DiagnosticsEngine &Diags = Context.getDiags();
2912 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2913 "cannot mangle this 'auto' type yet");
2914 Diags.Report(Range.getBegin(), DiagID)
2915 << Range;
2916}
2917
2918void MicrosoftCXXNameMangler::mangleType(
2919 const DeducedTemplateSpecializationType *T, Qualifiers, SourceRange Range) {
2920 assert(T->getDeducedType().isNull() && "expecting a dependent type!")((T->getDeducedType().isNull() && "expecting a dependent type!"
) ? static_cast<void> (0) : __assert_fail ("T->getDeducedType().isNull() && \"expecting a dependent type!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2920, __PRETTY_FUNCTION__))
;
2921
2922 DiagnosticsEngine &Diags = Context.getDiags();
2923 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2924 "cannot mangle this deduced class template specialization type yet");
2925 Diags.Report(Range.getBegin(), DiagID)
2926 << Range;
2927}
2928
2929void MicrosoftCXXNameMangler::mangleType(const AtomicType *T, Qualifiers,
2930 SourceRange Range) {
2931 QualType ValueType = T->getValueType();
2932
2933 llvm::SmallString<64> TemplateMangling;
2934 llvm::raw_svector_ostream Stream(TemplateMangling);
2935 MicrosoftCXXNameMangler Extra(Context, Stream);
2936 Stream << "?$";
2937 Extra.mangleSourceName("_Atomic");
2938 Extra.mangleType(ValueType, Range, QMM_Escape);
2939
2940 mangleArtificialTagType(TTK_Struct, TemplateMangling, {"__clang"});
2941}
2942
2943void MicrosoftCXXNameMangler::mangleType(const PipeType *T, Qualifiers,
2944 SourceRange Range) {
2945 DiagnosticsEngine &Diags = Context.getDiags();
2946 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2947 "cannot mangle this OpenCL pipe type yet");
2948 Diags.Report(Range.getBegin(), DiagID)
2949 << Range;
2950}
2951
2952void MicrosoftMangleContextImpl::mangleCXXName(const NamedDecl *D,
2953 raw_ostream &Out) {
2954 assert((isa<FunctionDecl>(D) || isa<VarDecl>(D)) &&(((isa<FunctionDecl>(D) || isa<VarDecl>(D)) &&
"Invalid mangleName() call, argument is not a variable or function!"
) ? static_cast<void> (0) : __assert_fail ("(isa<FunctionDecl>(D) || isa<VarDecl>(D)) && \"Invalid mangleName() call, argument is not a variable or function!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2955, __PRETTY_FUNCTION__))
2955 "Invalid mangleName() call, argument is not a variable or function!")(((isa<FunctionDecl>(D) || isa<VarDecl>(D)) &&
"Invalid mangleName() call, argument is not a variable or function!"
) ? static_cast<void> (0) : __assert_fail ("(isa<FunctionDecl>(D) || isa<VarDecl>(D)) && \"Invalid mangleName() call, argument is not a variable or function!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2955, __PRETTY_FUNCTION__))
;
2956 assert(!isa<CXXConstructorDecl>(D) && !isa<CXXDestructorDecl>(D) &&((!isa<CXXConstructorDecl>(D) && !isa<CXXDestructorDecl
>(D) && "Invalid mangleName() call on 'structor decl!"
) ? static_cast<void> (0) : __assert_fail ("!isa<CXXConstructorDecl>(D) && !isa<CXXDestructorDecl>(D) && \"Invalid mangleName() call on 'structor decl!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2957, __PRETTY_FUNCTION__))
2957 "Invalid mangleName() call on 'structor decl!")((!isa<CXXConstructorDecl>(D) && !isa<CXXDestructorDecl
>(D) && "Invalid mangleName() call on 'structor decl!"
) ? static_cast<void> (0) : __assert_fail ("!isa<CXXConstructorDecl>(D) && !isa<CXXDestructorDecl>(D) && \"Invalid mangleName() call on 'structor decl!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 2957, __PRETTY_FUNCTION__))
;
2958
2959 PrettyStackTraceDecl CrashInfo(D, SourceLocation(),
2960 getASTContext().getSourceManager(),
2961 "Mangling declaration");
2962
2963 msvc_hashing_ostream MHO(Out);
2964 MicrosoftCXXNameMangler Mangler(*this, MHO);
2965 return Mangler.mangle(D);
2966}
2967
2968// <this-adjustment> ::= <no-adjustment> | <static-adjustment> |
2969// <virtual-adjustment>
2970// <no-adjustment> ::= A # private near
2971// ::= B # private far
2972// ::= I # protected near
2973// ::= J # protected far
2974// ::= Q # public near
2975// ::= R # public far
2976// <static-adjustment> ::= G <static-offset> # private near
2977// ::= H <static-offset> # private far
2978// ::= O <static-offset> # protected near
2979// ::= P <static-offset> # protected far
2980// ::= W <static-offset> # public near
2981// ::= X <static-offset> # public far
2982// <virtual-adjustment> ::= $0 <virtual-shift> <static-offset> # private near
2983// ::= $1 <virtual-shift> <static-offset> # private far
2984// ::= $2 <virtual-shift> <static-offset> # protected near
2985// ::= $3 <virtual-shift> <static-offset> # protected far
2986// ::= $4 <virtual-shift> <static-offset> # public near
2987// ::= $5 <virtual-shift> <static-offset> # public far
2988// <virtual-shift> ::= <vtordisp-shift> | <vtordispex-shift>
2989// <vtordisp-shift> ::= <offset-to-vtordisp>
2990// <vtordispex-shift> ::= <offset-to-vbptr> <vbase-offset-offset>
2991// <offset-to-vtordisp>
2992static void mangleThunkThisAdjustment(AccessSpecifier AS,
2993 const ThisAdjustment &Adjustment,
2994 MicrosoftCXXNameMangler &Mangler,
2995 raw_ostream &Out) {
2996 if (!Adjustment.Virtual.isEmpty()) {
2997 Out << '$';
2998 char AccessSpec;
2999 switch (AS) {
3000 case AS_none:
3001 llvm_unreachable("Unsupported access specifier")::llvm::llvm_unreachable_internal("Unsupported access specifier"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 3001)
;
3002 case AS_private:
3003 AccessSpec = '0';
3004 break;
3005 case AS_protected:
3006 AccessSpec = '2';
3007 break;
3008 case AS_public:
3009 AccessSpec = '4';
3010 }
3011 if (Adjustment.Virtual.Microsoft.VBPtrOffset) {
3012 Out << 'R' << AccessSpec;
3013 Mangler.mangleNumber(
3014 static_cast<uint32_t>(Adjustment.Virtual.Microsoft.VBPtrOffset));
3015 Mangler.mangleNumber(
3016 static_cast<uint32_t>(Adjustment.Virtual.Microsoft.VBOffsetOffset));
3017 Mangler.mangleNumber(
3018 static_cast<uint32_t>(Adjustment.Virtual.Microsoft.VtordispOffset));
3019 Mangler.mangleNumber(static_cast<uint32_t>(Adjustment.NonVirtual));
3020 } else {
3021 Out << AccessSpec;
3022 Mangler.mangleNumber(
3023 static_cast<uint32_t>(Adjustment.Virtual.Microsoft.VtordispOffset));
3024 Mangler.mangleNumber(-static_cast<uint32_t>(Adjustment.NonVirtual));
3025 }
3026 } else if (Adjustment.NonVirtual != 0) {
3027 switch (AS) {
3028 case AS_none:
3029 llvm_unreachable("Unsupported access specifier")::llvm::llvm_unreachable_internal("Unsupported access specifier"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 3029)
;
3030 case AS_private:
3031 Out << 'G';
3032 break;
3033 case AS_protected:
3034 Out << 'O';
3035 break;
3036 case AS_public:
3037 Out << 'W';
3038 }
3039 Mangler.mangleNumber(-static_cast<uint32_t>(Adjustment.NonVirtual));
3040 } else {
3041 switch (AS) {
3042 case AS_none:
3043 llvm_unreachable("Unsupported access specifier")::llvm::llvm_unreachable_internal("Unsupported access specifier"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 3043)
;
3044 case AS_private:
3045 Out << 'A';
3046 break;
3047 case AS_protected:
3048 Out << 'I';
3049 break;
3050 case AS_public:
3051 Out << 'Q';
3052 }
3053 }
3054}
3055
3056void MicrosoftMangleContextImpl::mangleVirtualMemPtrThunk(
3057 const CXXMethodDecl *MD, const MethodVFTableLocation &ML,
3058 raw_ostream &Out) {
3059 msvc_hashing_ostream MHO(Out);
3060 MicrosoftCXXNameMangler Mangler(*this, MHO);
3061 Mangler.getStream() << '?';
3062 Mangler.mangleVirtualMemPtrThunk(MD, ML);
3063}
3064
3065void MicrosoftMangleContextImpl::mangleThunk(const CXXMethodDecl *MD,
3066 const ThunkInfo &Thunk,
3067 raw_ostream &Out) {
3068 msvc_hashing_ostream MHO(Out);
3069 MicrosoftCXXNameMangler Mangler(*this, MHO);
3070 Mangler.getStream() << '?';
3071 Mangler.mangleName(MD);
3072
3073 // Usually the thunk uses the access specifier of the new method, but if this
3074 // is a covariant return thunk, then MSVC always uses the public access
3075 // specifier, and we do the same.
3076 AccessSpecifier AS = Thunk.Return.isEmpty() ? MD->getAccess() : AS_public;
3077 mangleThunkThisAdjustment(AS, Thunk.This, Mangler, MHO);
3078
3079 if (!Thunk.Return.isEmpty())
3080 assert(Thunk.Method != nullptr &&((Thunk.Method != nullptr && "Thunk info should hold the overridee decl"
) ? static_cast<void> (0) : __assert_fail ("Thunk.Method != nullptr && \"Thunk info should hold the overridee decl\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 3081, __PRETTY_FUNCTION__))
3081 "Thunk info should hold the overridee decl")((Thunk.Method != nullptr && "Thunk info should hold the overridee decl"
) ? static_cast<void> (0) : __assert_fail ("Thunk.Method != nullptr && \"Thunk info should hold the overridee decl\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 3081, __PRETTY_FUNCTION__))
;
3082
3083 const CXXMethodDecl *DeclForFPT = Thunk.Method ? Thunk.Method : MD;
3084 Mangler.mangleFunctionType(
3085 DeclForFPT->getType()->castAs<FunctionProtoType>(), MD);
3086}
3087
3088void MicrosoftMangleContextImpl::mangleCXXDtorThunk(
3089 const CXXDestructorDecl *DD, CXXDtorType Type,
3090 const ThisAdjustment &Adjustment, raw_ostream &Out) {
3091 // FIXME: Actually, the dtor thunk should be emitted for vector deleting
3092 // dtors rather than scalar deleting dtors. Just use the vector deleting dtor
3093 // mangling manually until we support both deleting dtor types.
3094 assert(Type == Dtor_Deleting)((Type == Dtor_Deleting) ? static_cast<void> (0) : __assert_fail
("Type == Dtor_Deleting", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 3094, __PRETTY_FUNCTION__))
;
3095 msvc_hashing_ostream MHO(Out);
3096 MicrosoftCXXNameMangler Mangler(*this, MHO, DD, Type);
3097 Mangler.getStream() << "??_E";
3098 Mangler.mangleName(DD->getParent());
3099 mangleThunkThisAdjustment(DD->getAccess(), Adjustment, Mangler, MHO);
3100 Mangler.mangleFunctionType(DD->getType()->castAs<FunctionProtoType>(), DD);
3101}
3102
3103void MicrosoftMangleContextImpl::mangleCXXVFTable(
3104 const CXXRecordDecl *Derived, ArrayRef<const CXXRecordDecl *> BasePath,
3105 raw_ostream &Out) {
3106 // <mangled-name> ::= ?_7 <class-name> <storage-class>
3107 // <cvr-qualifiers> [<name>] @
3108 // NOTE: <cvr-qualifiers> here is always 'B' (const). <storage-class>
3109 // is always '6' for vftables.
3110 msvc_hashing_ostream MHO(Out);
3111 MicrosoftCXXNameMangler Mangler(*this, MHO);
3112 if (Derived->hasAttr<DLLImportAttr>())
3113 Mangler.getStream() << "??_S";
3114 else
3115 Mangler.getStream() << "??_7";
3116 Mangler.mangleName(Derived);
3117 Mangler.getStream() << "6B"; // '6' for vftable, 'B' for const.
3118 for (const CXXRecordDecl *RD : BasePath)
3119 Mangler.mangleName(RD);
3120 Mangler.getStream() << '@';
3121}
3122
3123void MicrosoftMangleContextImpl::mangleCXXVBTable(
3124 const CXXRecordDecl *Derived, ArrayRef<const CXXRecordDecl *> BasePath,
3125 raw_ostream &Out) {
3126 // <mangled-name> ::= ?_8 <class-name> <storage-class>
3127 // <cvr-qualifiers> [<name>] @
3128 // NOTE: <cvr-qualifiers> here is always 'B' (const). <storage-class>
3129 // is always '7' for vbtables.
3130 msvc_hashing_ostream MHO(Out);
3131 MicrosoftCXXNameMangler Mangler(*this, MHO);
3132 Mangler.getStream() << "??_8";
3133 Mangler.mangleName(Derived);
3134 Mangler.getStream() << "7B"; // '7' for vbtable, 'B' for const.
3135 for (const CXXRecordDecl *RD : BasePath)
3136 Mangler.mangleName(RD);
3137 Mangler.getStream() << '@';
3138}
3139
3140void MicrosoftMangleContextImpl::mangleCXXRTTI(QualType T, raw_ostream &Out) {
3141 msvc_hashing_ostream MHO(Out);
3142 MicrosoftCXXNameMangler Mangler(*this, MHO);
3143 Mangler.getStream() << "??_R0";
3144 Mangler.mangleType(T, SourceRange(), MicrosoftCXXNameMangler::QMM_Result);
3145 Mangler.getStream() << "@8";
3146}
3147
3148void MicrosoftMangleContextImpl::mangleCXXRTTIName(QualType T,
3149 raw_ostream &Out) {
3150 MicrosoftCXXNameMangler Mangler(*this, Out);
3151 Mangler.getStream() << '.';
3152 Mangler.mangleType(T, SourceRange(), MicrosoftCXXNameMangler::QMM_Result);
3153}
3154
3155void MicrosoftMangleContextImpl::mangleCXXVirtualDisplacementMap(
3156 const CXXRecordDecl *SrcRD, const CXXRecordDecl *DstRD, raw_ostream &Out) {
3157 msvc_hashing_ostream MHO(Out);
3158 MicrosoftCXXNameMangler Mangler(*this, MHO);
3159 Mangler.getStream() << "??_K";
3160 Mangler.mangleName(SrcRD);
3161 Mangler.getStream() << "$C";
3162 Mangler.mangleName(DstRD);
3163}
3164
3165void MicrosoftMangleContextImpl::mangleCXXThrowInfo(QualType T, bool IsConst,
3166 bool IsVolatile,
3167 bool IsUnaligned,
3168 uint32_t NumEntries,
3169 raw_ostream &Out) {
3170 msvc_hashing_ostream MHO(Out);
3171 MicrosoftCXXNameMangler Mangler(*this, MHO);
3172 Mangler.getStream() << "_TI";
3173 if (IsConst)
3174 Mangler.getStream() << 'C';
3175 if (IsVolatile)
3176 Mangler.getStream() << 'V';
3177 if (IsUnaligned)
3178 Mangler.getStream() << 'U';
3179 Mangler.getStream() << NumEntries;
3180 Mangler.mangleType(T, SourceRange(), MicrosoftCXXNameMangler::QMM_Result);
3181}
3182
3183void MicrosoftMangleContextImpl::mangleCXXCatchableTypeArray(
3184 QualType T, uint32_t NumEntries, raw_ostream &Out) {
3185 msvc_hashing_ostream MHO(Out);
3186 MicrosoftCXXNameMangler Mangler(*this, MHO);
3187 Mangler.getStream() << "_CTA";
3188 Mangler.getStream() << NumEntries;
3189 Mangler.mangleType(T, SourceRange(), MicrosoftCXXNameMangler::QMM_Result);
3190}
3191
3192void MicrosoftMangleContextImpl::mangleCXXCatchableType(
3193 QualType T, const CXXConstructorDecl *CD, CXXCtorType CT, uint32_t Size,
3194 uint32_t NVOffset, int32_t VBPtrOffset, uint32_t VBIndex,
3195 raw_ostream &Out) {
3196 MicrosoftCXXNameMangler Mangler(*this, Out);
3197 Mangler.getStream() << "_CT";
3198
3199 llvm::SmallString<64> RTTIMangling;
3200 {
3201 llvm::raw_svector_ostream Stream(RTTIMangling);
3202 msvc_hashing_ostream MHO(Stream);
3203 mangleCXXRTTI(T, MHO);
3204 }
3205 Mangler.getStream() << RTTIMangling;
3206
3207 // VS2015 and VS2017.1 omit the copy-constructor in the mangled name but
3208 // both older and newer versions include it.
3209 // FIXME: It is known that the Ctor is present in 2013, and in 2017.7
3210 // (_MSC_VER 1914) and newer, and that it's omitted in 2015 and 2017.4
3211 // (_MSC_VER 1911), but it's unknown when exactly it reappeared (1914?
3212 // Or 1912, 1913 aleady?).
3213 bool OmitCopyCtor = getASTContext().getLangOpts().isCompatibleWithMSVC(
3214 LangOptions::MSVC2015) &&
3215 !getASTContext().getLangOpts().isCompatibleWithMSVC(
3216 LangOptions::MSVC2017_7);
3217 llvm::SmallString<64> CopyCtorMangling;
3218 if (!OmitCopyCtor && CD) {
3219 llvm::raw_svector_ostream Stream(CopyCtorMangling);
3220 msvc_hashing_ostream MHO(Stream);
3221 mangleCXXCtor(CD, CT, MHO);
3222 }
3223 Mangler.getStream() << CopyCtorMangling;
3224
3225 Mangler.getStream() << Size;
3226 if (VBPtrOffset == -1) {
3227 if (NVOffset) {
3228 Mangler.getStream() << NVOffset;
3229 }
3230 } else {
3231 Mangler.getStream() << NVOffset;
3232 Mangler.getStream() << VBPtrOffset;
3233 Mangler.getStream() << VBIndex;
3234 }
3235}
3236
3237void MicrosoftMangleContextImpl::mangleCXXRTTIBaseClassDescriptor(
3238 const CXXRecordDecl *Derived, uint32_t NVOffset, int32_t VBPtrOffset,
3239 uint32_t VBTableOffset, uint32_t Flags, raw_ostream &Out) {
3240 msvc_hashing_ostream MHO(Out);
3241 MicrosoftCXXNameMangler Mangler(*this, MHO);
3242 Mangler.getStream() << "??_R1";
3243 Mangler.mangleNumber(NVOffset);
3244 Mangler.mangleNumber(VBPtrOffset);
3245 Mangler.mangleNumber(VBTableOffset);
3246 Mangler.mangleNumber(Flags);
3247 Mangler.mangleName(Derived);
3248 Mangler.getStream() << "8";
3249}
3250
3251void MicrosoftMangleContextImpl::mangleCXXRTTIBaseClassArray(
3252 const CXXRecordDecl *Derived, raw_ostream &Out) {
3253 msvc_hashing_ostream MHO(Out);
3254 MicrosoftCXXNameMangler Mangler(*this, MHO);
3255 Mangler.getStream() << "??_R2";
3256 Mangler.mangleName(Derived);
3257 Mangler.getStream() << "8";
3258}
3259
3260void MicrosoftMangleContextImpl::mangleCXXRTTIClassHierarchyDescriptor(
3261 const CXXRecordDecl *Derived, raw_ostream &Out) {
3262 msvc_hashing_ostream MHO(Out);
3263 MicrosoftCXXNameMangler Mangler(*this, MHO);
3264 Mangler.getStream() << "??_R3";
3265 Mangler.mangleName(Derived);
3266 Mangler.getStream() << "8";
3267}
3268
3269void MicrosoftMangleContextImpl::mangleCXXRTTICompleteObjectLocator(
3270 const CXXRecordDecl *Derived, ArrayRef<const CXXRecordDecl *> BasePath,
3271 raw_ostream &Out) {
3272 // <mangled-name> ::= ?_R4 <class-name> <storage-class>
3273 // <cvr-qualifiers> [<name>] @
3274 // NOTE: <cvr-qualifiers> here is always 'B' (const). <storage-class>
3275 // is always '6' for vftables.
3276 llvm::SmallString<64> VFTableMangling;
3277 llvm::raw_svector_ostream Stream(VFTableMangling);
3278 mangleCXXVFTable(Derived, BasePath, Stream);
3279
3280 if (VFTableMangling.startswith("??@")) {
3281 assert(VFTableMangling.endswith("@"))((VFTableMangling.endswith("@")) ? static_cast<void> (0
) : __assert_fail ("VFTableMangling.endswith(\"@\")", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 3281, __PRETTY_FUNCTION__))
;
3282 Out << VFTableMangling << "??_R4@";
3283 return;
3284 }
3285
3286 assert(VFTableMangling.startswith("??_7") ||((VFTableMangling.startswith("??_7") || VFTableMangling.startswith
("??_S")) ? static_cast<void> (0) : __assert_fail ("VFTableMangling.startswith(\"??_7\") || VFTableMangling.startswith(\"??_S\")"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 3287, __PRETTY_FUNCTION__))
3287 VFTableMangling.startswith("??_S"))((VFTableMangling.startswith("??_7") || VFTableMangling.startswith
("??_S")) ? static_cast<void> (0) : __assert_fail ("VFTableMangling.startswith(\"??_7\") || VFTableMangling.startswith(\"??_S\")"
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/clang/lib/AST/MicrosoftMangle.cpp"
, 3287, __PRETTY_FUNCTION__))
;
3288
3289 Out << "??_R4" << StringRef(VFTableMangling).drop_front(4);
3290}
3291
3292void MicrosoftMangleContextImpl::mangleSEHFilterExpression(
3293 const NamedDecl *EnclosingDecl, raw_ostream &Out) {
3294 msvc_hashing_ostream MHO(Out);
3295 MicrosoftCXXNameMangler Mangler(*this, MHO);
3296 // The function body is in the same comdat as the function with the handler,
3297 // so the numbering here doesn't have to be the same across TUs.
3298 //
3299 // <mangled-name> ::= ?filt$ <filter-number> @0
3300 Mangler.getStream() << "?filt$" << SEHFilterIds[EnclosingDecl]++ << "@0@";
3301 Mangler.mangleName(EnclosingDecl);
3302}
3303
3304void MicrosoftMangleContextImpl::mangleSEHFinallyBlock(
3305 const NamedDecl *EnclosingDecl, raw_ostream &Out) {
3306 msvc_hashing_ostream MHO(Out);
3307 MicrosoftCXXNameMangler Mangler(*this, MHO);
3308 // The function body is in the same comdat as the function with the handler,
3309 // so the numbering here doesn't have to be the same across TUs.
3310 //
3311 // <mangled-name> ::= ?fin$ <filter-number> @0
3312 Mangler.getStream() << "?fin$" << SEHFinallyIds[EnclosingDecl]++ << "@0@";
3313 Mangler.mangleName(EnclosingDecl);
3314}
3315
3316void MicrosoftMangleContextImpl::mangleTypeName(QualType T, raw_ostream &Out) {
3317 // This is just a made up unique string for the purposes of tbaa. undname
3318 // does *not* know how to demangle it.
3319 MicrosoftCXXNameMangler Mangler(*this, Out);
3320 Mangler.getStream() << '?';
3321 Mangler.mangleType(T, SourceRange());
3322}
3323
3324void MicrosoftMangleContextImpl::mangleCXXCtor(const CXXConstructorDecl *D,
3325 CXXCtorType Type,
3326 raw_ostream &Out) {
3327 msvc_hashing_ostream MHO(Out);
3328 MicrosoftCXXNameMangler mangler(*this, MHO, D, Type);
3329 mangler.mangle(D);
3330}
3331
3332void MicrosoftMangleContextImpl::mangleCXXDtor(const CXXDestructorDecl *D,
3333 CXXDtorType Type,
3334 raw_ostream &Out) {
3335 msvc_hashing_ostream MHO(Out);
3336 MicrosoftCXXNameMangler mangler(*this, MHO, D, Type);
3337 mangler.mangle(D);
3338}
3339
3340void MicrosoftMangleContextImpl::mangleReferenceTemporary(
3341 const VarDecl *VD, unsigned ManglingNumber, raw_ostream &Out) {
3342 msvc_hashing_ostream MHO(Out);
3343 MicrosoftCXXNameMangler Mangler(*this, MHO);
3344
3345 Mangler.getStream() << "?$RT" << ManglingNumber << '@';
3346 Mangler.mangle(VD, "");
1
Calling 'MicrosoftCXXNameMangler::mangle'
3347}
3348
3349void MicrosoftMangleContextImpl::mangleThreadSafeStaticGuardVariable(
3350 const VarDecl *VD, unsigned GuardNum, raw_ostream &Out) {
3351 msvc_hashing_ostream MHO(Out);
3352 MicrosoftCXXNameMangler Mangler(*this, MHO);
3353
3354 Mangler.getStream() << "?$TSS" << GuardNum << '@';
3355 Mangler.mangleNestedName(VD);
3356 Mangler.getStream() << "@4HA";
3357}
3358
3359void MicrosoftMangleContextImpl::mangleStaticGuardVariable(const VarDecl *VD,
3360 raw_ostream &Out) {
3361 // <guard-name> ::= ?_B <postfix> @5 <scope-depth>
3362 // ::= ?__J <postfix> @5 <scope-depth>
3363 // ::= ?$S <guard-num> @ <postfix> @4IA
3364
3365 // The first mangling is what MSVC uses to guard static locals in inline
3366 // functions. It uses a different mangling in external functions to support
3367 // guarding more than 32 variables. MSVC rejects inline functions with more
3368 // than 32 static locals. We don't fully implement the second mangling
3369 // because those guards are not externally visible, and instead use LLVM's
3370 // default renaming when creating a new guard variable.
3371 msvc_hashing_ostream MHO(Out);
3372 MicrosoftCXXNameMangler Mangler(*this, MHO);
3373
3374 bool Visible = VD->isExternallyVisible();
3375 if (Visible) {
3376 Mangler.getStream() << (VD->getTLSKind() ? "??__J" : "??_B");
3377 } else {
3378 Mangler.getStream() << "?$S1@";
3379 }
3380 unsigned ScopeDepth = 0;
3381 if (Visible && !getNextDiscriminator(VD, ScopeDepth))
3382 // If we do not have a discriminator and are emitting a guard variable for
3383 // use at global scope, then mangling the nested name will not be enough to
3384 // remove ambiguities.
3385 Mangler.mangle(VD, "");
3386 else
3387 Mangler.mangleNestedName(VD);
3388 Mangler.getStream() << (Visible ? "@5" : "@4IA");
3389 if (ScopeDepth)
3390 Mangler.mangleNumber(ScopeDepth);
3391}
3392
3393void MicrosoftMangleContextImpl::mangleInitFiniStub(const VarDecl *D,
3394 char CharCode,
3395 raw_ostream &Out) {
3396 msvc_hashing_ostream MHO(Out);
3397 MicrosoftCXXNameMangler Mangler(*this, MHO);
3398 Mangler.getStream() << "??__" << CharCode;
3399 if (D->isStaticDataMember()) {
3400 Mangler.getStream() << '?';
3401 Mangler.mangleName(D);
3402 Mangler.mangleVariableEncoding(D);
3403 Mangler.getStream() << "@@";
3404 } else {
3405 Mangler.mangleName(D);
3406 }
3407 // This is the function class mangling. These stubs are global, non-variadic,
3408 // cdecl functions that return void and take no args.
3409 Mangler.getStream() << "YAXXZ";
3410}
3411
3412void MicrosoftMangleContextImpl::mangleDynamicInitializer(const VarDecl *D,
3413 raw_ostream &Out) {
3414 // <initializer-name> ::= ?__E <name> YAXXZ
3415 mangleInitFiniStub(D, 'E', Out);
3416}
3417
3418void
3419MicrosoftMangleContextImpl::mangleDynamicAtExitDestructor(const VarDecl *D,
3420 raw_ostream &Out) {
3421 // <destructor-name> ::= ?__F <name> YAXXZ
3422 mangleInitFiniStub(D, 'F', Out);
3423}
3424
3425void MicrosoftMangleContextImpl::mangleStringLiteral(const StringLiteral *SL,
3426 raw_ostream &Out) {
3427 // <char-type> ::= 0 # char, char16_t, char32_t
3428 // # (little endian char data in mangling)
3429 // ::= 1 # wchar_t (big endian char data in mangling)
3430 //
3431 // <literal-length> ::= <non-negative integer> # the length of the literal
3432 //
3433 // <encoded-crc> ::= <hex digit>+ @ # crc of the literal including
3434 // # trailing null bytes
3435 //
3436 // <encoded-string> ::= <simple character> # uninteresting character
3437 // ::= '?$' <hex digit> <hex digit> # these two nibbles
3438 // # encode the byte for the
3439 // # character
3440 // ::= '?' [a-z] # \xe1 - \xfa
3441 // ::= '?' [A-Z] # \xc1 - \xda
3442 // ::= '?' [0-9] # [,/\:. \n\t'-]
3443 //
3444 // <literal> ::= '??_C@_' <char-type> <literal-length> <encoded-crc>
3445 // <encoded-string> '@'
3446 MicrosoftCXXNameMangler Mangler(*this, Out);
3447 Mangler.getStream() << "??_C@_";
3448
3449 // The actual string length might be different from that of the string literal
3450 // in cases like:
3451 // char foo[3] = "foobar";
3452 // char bar[42] = "foobar";
3453 // Where it is truncated or zero-padded to fit the array. This is the length
3454 // used for mangling, and any trailing null-bytes also need to be mangled.
3455 unsigned StringLength = getASTContext()
3456 .getAsConstantArrayType(SL->getType())
3457 ->getSize()
3458 .getZExtValue();
3459 unsigned StringByteLength = StringLength * SL->getCharByteWidth();
3460
3461 // <char-type>: The "kind" of string literal is encoded into the mangled name.
3462 if (SL->isWide())
3463 Mangler.getStream() << '1';
3464 else
3465 Mangler.getStream() << '0';
3466
3467 // <literal-length>: The next part of the mangled name consists of the length
3468 // of the string in bytes.
3469 Mangler.mangleNumber(StringByteLength);
3470
3471 auto GetLittleEndianByte = [&SL](unsigned Index) {
3472 unsigned CharByteWidth = SL->getCharByteWidth();
3473 if (Index / CharByteWidth >= SL->getLength())
3474 return static_cast<char>(0);
3475 uint32_t CodeUnit = SL->getCodeUnit(Index / CharByteWidth);
3476 unsigned OffsetInCodeUnit = Index % CharByteWidth;
3477 return static_cast<char>((CodeUnit >> (8 * OffsetInCodeUnit)) & 0xff);
3478 };
3479
3480 auto GetBigEndianByte = [&SL](unsigned Index) {
3481 unsigned CharByteWidth = SL->getCharByteWidth();
3482 if (Index / CharByteWidth >= SL->getLength())
3483 return static_cast<char>(0);
3484 uint32_t CodeUnit = SL->getCodeUnit(Index / CharByteWidth);
3485 unsigned OffsetInCodeUnit = (CharByteWidth - 1) - (Index % CharByteWidth);
3486 return static_cast<char>((CodeUnit >> (8 * OffsetInCodeUnit)) & 0xff);
3487 };
3488
3489 // CRC all the bytes of the StringLiteral.
3490 llvm::JamCRC JC;
3491 for (unsigned I = 0, E = StringByteLength; I != E; ++I)
3492 JC.update(GetLittleEndianByte(I));
3493
3494 // <encoded-crc>: The CRC is encoded utilizing the standard number mangling
3495 // scheme.
3496 Mangler.mangleNumber(JC.getCRC());
3497
3498 // <encoded-string>: The mangled name also contains the first 32 bytes
3499 // (including null-terminator bytes) of the encoded StringLiteral.
3500 // Each character is encoded by splitting them into bytes and then encoding
3501 // the constituent bytes.
3502 auto MangleByte = [&Mangler](char Byte) {
3503 // There are five different manglings for characters:
3504 // - [a-zA-Z0-9_$]: A one-to-one mapping.
3505 // - ?[a-z]: The range from \xe1 to \xfa.
3506 // - ?[A-Z]: The range from \xc1 to \xda.
3507 // - ?[0-9]: The set of [,/\:. \n\t'-].
3508 // - ?$XX: A fallback which maps nibbles.
3509 if (isIdentifierBody(Byte, /*AllowDollar=*/true)) {
3510 Mangler.getStream() << Byte;
3511 } else if (isLetter(Byte & 0x7f)) {
3512 Mangler.getStream() << '?' << static_cast<char>(Byte & 0x7f);
3513 } else {
3514 const char SpecialChars[] = {',', '/', '\\', ':', '.',
3515 ' ', '\n', '\t', '\'', '-'};
3516 const char *Pos = llvm::find(SpecialChars, Byte);
3517 if (Pos != std::end(SpecialChars)) {
3518 Mangler.getStream() << '?' << (Pos - std::begin(SpecialChars));
3519 } else {
3520 Mangler.getStream() << "?$";
3521 Mangler.getStream() << static_cast<char>('A' + ((Byte >> 4) & 0xf));
3522 Mangler.getStream() << static_cast<char>('A' + (Byte & 0xf));
3523 }
3524 }
3525 };
3526
3527 // Enforce our 32 bytes max, except wchar_t which gets 32 chars instead.
3528 unsigned MaxBytesToMangle = SL->isWide() ? 64U : 32U;
3529 unsigned NumBytesToMangle = std::min(MaxBytesToMangle, StringByteLength);
3530 for (unsigned I = 0; I != NumBytesToMangle; ++I) {
3531 if (SL->isWide())
3532 MangleByte(GetBigEndianByte(I));
3533 else
3534 MangleByte(GetLittleEndianByte(I));
3535 }
3536
3537 Mangler.getStream() << '@';
3538}
3539
3540MicrosoftMangleContext *
3541MicrosoftMangleContext::create(ASTContext &Context, DiagnosticsEngine &Diags) {
3542 return new MicrosoftMangleContextImpl(Context, Diags);
3543}

/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/build-llvm/tools/clang/include/clang/AST/TypeNodes.inc

1/*===- TableGen'erated file -------------------------------------*- C++ -*-===*\
2|* *|
3|* An x-macro database of Clang type nodes *|
4|* *|
5|* Automatically generated file, do not edit! *|
6|* *|
7\*===----------------------------------------------------------------------===*/
8
9#ifndef ABSTRACT_TYPE
10# define ABSTRACT_TYPE(Class, Base) TYPE(Class, Base)
11#endif
12#ifndef NON_CANONICAL_TYPE
13# define NON_CANONICAL_TYPE(Class, Base) TYPE(Class, Base)
14#endif
15#ifndef DEPENDENT_TYPE
16# define DEPENDENT_TYPE(Class, Base) TYPE(Class, Base)
17#endif
18#ifndef NON_CANONICAL_UNLESS_DEPENDENT_TYPE
19# define NON_CANONICAL_UNLESS_DEPENDENT_TYPE(Class, Base) TYPE(Class, Base)
20#endif
21NON_CANONICAL_TYPE(Adjusted, Type)
22NON_CANONICAL_TYPE(Decayed, AdjustedType)
23ABSTRACT_TYPE(Array, Type)
24TYPE(ConstantArray, ArrayType)
25DEPENDENT_TYPE(DependentSizedArray, ArrayType)
26TYPE(IncompleteArray, ArrayType)
27TYPE(VariableArray, ArrayType)
28TYPE(Atomic, Type)
29NON_CANONICAL_TYPE(Attributed, Type)
30TYPE(BlockPointer, Type)
31TYPE(Builtin, Type)
32TYPE(Complex, Type)
33NON_CANONICAL_UNLESS_DEPENDENT_TYPE(Decltype, Type)
34ABSTRACT_TYPE(Deduced, Type)
35TYPE(Auto, DeducedType)
36TYPE(DeducedTemplateSpecialization, DeducedType)
37DEPENDENT_TYPE(DependentAddressSpace, Type)
38DEPENDENT_TYPE(DependentName, Type)
39DEPENDENT_TYPE(DependentSizedExtVector, Type)
40DEPENDENT_TYPE(DependentTemplateSpecialization, Type)
41DEPENDENT_TYPE(DependentVector, Type)
42NON_CANONICAL_TYPE(Elaborated, Type)
43ABSTRACT_TYPE(Function, Type)
44TYPE(FunctionNoProto, FunctionType)
45TYPE(FunctionProto, FunctionType)
46DEPENDENT_TYPE(InjectedClassName, Type)
47NON_CANONICAL_TYPE(MacroQualified, Type)
48TYPE(MemberPointer, Type)
20
'ty' is a 'MemberPointerType'
21
Calling 'MicrosoftCXXNameMangler::mangleType'
49TYPE(ObjCObjectPointer, Type)
50TYPE(ObjCObject, Type)
51TYPE(ObjCInterface, ObjCObjectType)
52NON_CANONICAL_TYPE(ObjCTypeParam, Type)
53NON_CANONICAL_UNLESS_DEPENDENT_TYPE(PackExpansion, Type)
54NON_CANONICAL_TYPE(Paren, Type)
55TYPE(Pipe, Type)
56TYPE(Pointer, Type)
57ABSTRACT_TYPE(Reference, Type)
58TYPE(LValueReference, ReferenceType)
59TYPE(RValueReference, ReferenceType)
60DEPENDENT_TYPE(SubstTemplateTypeParmPack, Type)
61NON_CANONICAL_TYPE(SubstTemplateTypeParm, Type)
62ABSTRACT_TYPE(Tag, Type)
63TYPE(Enum, TagType)
64TYPE(Record, TagType)
65NON_CANONICAL_UNLESS_DEPENDENT_TYPE(TemplateSpecialization, Type)
66DEPENDENT_TYPE(TemplateTypeParm, Type)
67NON_CANONICAL_UNLESS_DEPENDENT_TYPE(TypeOfExpr, Type)
68NON_CANONICAL_UNLESS_DEPENDENT_TYPE(TypeOf, Type)
69NON_CANONICAL_TYPE(Typedef, Type)
70NON_CANONICAL_UNLESS_DEPENDENT_TYPE(UnaryTransform, Type)
71DEPENDENT_TYPE(UnresolvedUsing, Type)
72TYPE(Vector, Type)
73TYPE(ExtVector, VectorType)
74#ifdef LAST_TYPE
75LAST_TYPE(ExtVector)
76#undef LAST_TYPE
77#endif
78#ifdef LEAF_TYPE
79LEAF_TYPE(Builtin)
80LEAF_TYPE(Enum)
81LEAF_TYPE(InjectedClassName)
82LEAF_TYPE(ObjCInterface)
83LEAF_TYPE(Record)
84LEAF_TYPE(TemplateTypeParm)
85#undef LEAF_TYPE
86#endif
87#undef TYPE
88#undef ABSTRACT_TYPE
89#undef ABSTRACT_TYPE
90#undef NON_CANONICAL_TYPE
91#undef DEPENDENT_TYPE
92#undef NON_CANONICAL_UNLESS_DEPENDENT_TYPE