Bug Summary

File:clang/lib/AST/MicrosoftMangle.cpp
Warning:line 2413, column 27
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 -fuse-init-array -target-cpu x86-64 -dwarf-column-info -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~+201911111502510600c19528f1809/build-llvm/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST -I /build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include -I /build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/build-llvm/include -I /build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/build-llvm/tools/clang/lib/AST -fdebug-prefix-map=/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809=. -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-2019-12-09-002921-48462-1 -x c++ /build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/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 // FIXME: If we add support for __ptr32/64 qualifiers, then we should push
283 // this check into mangleQualifiers().
284 const bool PointersAre64Bit;
285
286public:
287 enum QualifierMangleMode { QMM_Drop, QMM_Mangle, QMM_Escape, QMM_Result };
288
289 MicrosoftCXXNameMangler(MicrosoftMangleContextImpl &C, raw_ostream &Out_)
290 : Context(C), Out(Out_), Structor(nullptr), StructorType(-1),
291 TemplateArgStringStorage(TemplateArgStringStorageAlloc),
292 PointersAre64Bit(C.getASTContext().getTargetInfo().getPointerWidth(0) ==
293 64) {}
294
295 MicrosoftCXXNameMangler(MicrosoftMangleContextImpl &C, raw_ostream &Out_,
296 const CXXConstructorDecl *D, CXXCtorType Type)
297 : Context(C), Out(Out_), Structor(getStructor(D)), StructorType(Type),
298 TemplateArgStringStorage(TemplateArgStringStorageAlloc),
299 PointersAre64Bit(C.getASTContext().getTargetInfo().getPointerWidth(0) ==
300 64) {}
301
302 MicrosoftCXXNameMangler(MicrosoftMangleContextImpl &C, raw_ostream &Out_,
303 const CXXDestructorDecl *D, CXXDtorType Type)
304 : Context(C), Out(Out_), Structor(getStructor(D)), StructorType(Type),
305 TemplateArgStringStorage(TemplateArgStringStorageAlloc),
306 PointersAre64Bit(C.getASTContext().getTargetInfo().getPointerWidth(0) ==
307 64) {}
308
309 raw_ostream &getStream() const { return Out; }
310
311 void mangle(const NamedDecl *D, StringRef Prefix = "?");
312 void mangleName(const NamedDecl *ND);
313 void mangleFunctionEncoding(const FunctionDecl *FD, bool ShouldMangle);
314 void mangleVariableEncoding(const VarDecl *VD);
315 void mangleMemberDataPointer(const CXXRecordDecl *RD, const ValueDecl *VD);
316 void mangleMemberFunctionPointer(const CXXRecordDecl *RD,
317 const CXXMethodDecl *MD);
318 void mangleVirtualMemPtrThunk(const CXXMethodDecl *MD,
319 const MethodVFTableLocation &ML);
320 void mangleNumber(int64_t Number);
321 void mangleTagTypeKind(TagTypeKind TK);
322 void mangleArtificialTagType(TagTypeKind TK, StringRef UnqualifiedName,
323 ArrayRef<StringRef> NestedNames = None);
324 void mangleAddressSpaceType(QualType T, Qualifiers Quals, SourceRange Range);
325 void mangleType(QualType T, SourceRange Range,
326 QualifierMangleMode QMM = QMM_Mangle);
327 void mangleFunctionType(const FunctionType *T,
328 const FunctionDecl *D = nullptr,
329 bool ForceThisQuals = false,
330 bool MangleExceptionSpec = true);
331 void mangleNestedName(const NamedDecl *ND);
332
333private:
334 bool isStructorDecl(const NamedDecl *ND) const {
335 return ND == Structor || getStructor(ND) == Structor;
336 }
337
338 void mangleUnqualifiedName(const NamedDecl *ND) {
339 mangleUnqualifiedName(ND, ND->getDeclName());
340 }
341 void mangleUnqualifiedName(const NamedDecl *ND, DeclarationName Name);
342 void mangleSourceName(StringRef Name);
343 void mangleOperatorName(OverloadedOperatorKind OO, SourceLocation Loc);
344 void mangleCXXDtorType(CXXDtorType T);
345 void mangleQualifiers(Qualifiers Quals, bool IsMember);
346 void mangleRefQualifier(RefQualifierKind RefQualifier);
347 void manglePointerCVQualifiers(Qualifiers Quals);
348 void manglePointerExtQualifiers(Qualifiers Quals, QualType PointeeType);
349
350 void mangleUnscopedTemplateName(const TemplateDecl *ND);
351 void
352 mangleTemplateInstantiationName(const TemplateDecl *TD,
353 const TemplateArgumentList &TemplateArgs);
354 void mangleObjCMethodName(const ObjCMethodDecl *MD);
355
356 void mangleFunctionArgumentType(QualType T, SourceRange Range);
357 void manglePassObjectSizeArg(const PassObjectSizeAttr *POSA);
358
359 bool isArtificialTagType(QualType T) const;
360
361 // Declare manglers for every type class.
362#define ABSTRACT_TYPE(CLASS, PARENT)
363#define NON_CANONICAL_TYPE(CLASS, PARENT)
364#define TYPE(CLASS, PARENT) void mangleType(const CLASS##Type *T, \
365 Qualifiers Quals, \
366 SourceRange Range);
367#include "clang/AST/TypeNodes.inc"
368#undef ABSTRACT_TYPE
369#undef NON_CANONICAL_TYPE
370#undef TYPE
371
372 void mangleType(const TagDecl *TD);
373 void mangleDecayedArrayType(const ArrayType *T);
374 void mangleArrayType(const ArrayType *T);
375 void mangleFunctionClass(const FunctionDecl *FD);
376 void mangleCallingConvention(CallingConv CC);
377 void mangleCallingConvention(const FunctionType *T);
378 void mangleIntegerLiteral(const llvm::APSInt &Number, bool IsBoolean);
379 void mangleExpression(const Expr *E);
380 void mangleThrowSpecification(const FunctionProtoType *T);
381
382 void mangleTemplateArgs(const TemplateDecl *TD,
383 const TemplateArgumentList &TemplateArgs);
384 void mangleTemplateArg(const TemplateDecl *TD, const TemplateArgument &TA,
385 const NamedDecl *Parm);
386
387 void mangleObjCProtocol(const ObjCProtocolDecl *PD);
388 void mangleObjCLifetime(const QualType T, Qualifiers Quals,
389 SourceRange Range);
390 void mangleObjCKindOfType(const ObjCObjectType *T, Qualifiers Quals,
391 SourceRange Range);
392};
393}
394
395MicrosoftMangleContextImpl::MicrosoftMangleContextImpl(ASTContext &Context,
396 DiagnosticsEngine &Diags)
397 : MicrosoftMangleContext(Context, Diags) {
398 // To mangle anonymous namespaces, hash the path to the main source file. The
399 // path should be whatever (probably relative) path was passed on the command
400 // line. The goal is for the compiler to produce the same output regardless of
401 // working directory, so use the uncanonicalized relative path.
402 //
403 // It's important to make the mangled names unique because, when CodeView
404 // debug info is in use, the debugger uses mangled type names to distinguish
405 // between otherwise identically named types in anonymous namespaces.
406 //
407 // These symbols are always internal, so there is no need for the hash to
408 // match what MSVC produces. For the same reason, clang is free to change the
409 // hash at any time without breaking compatibility with old versions of clang.
410 // The generated names are intended to look similar to what MSVC generates,
411 // which are something like "?A0x01234567@".
412 SourceManager &SM = Context.getSourceManager();
413 if (const FileEntry *FE = SM.getFileEntryForID(SM.getMainFileID())) {
414 // Truncate the hash so we get 8 characters of hexadecimal.
415 uint32_t TruncatedHash = uint32_t(xxHash64(FE->getName()));
416 AnonymousNamespaceHash = llvm::utohexstr(TruncatedHash);
417 } else {
418 // If we don't have a path to the main file, we'll just use 0.
419 AnonymousNamespaceHash = "0";
420 }
421}
422
423bool MicrosoftMangleContextImpl::shouldMangleCXXName(const NamedDecl *D) {
424 if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
425 LanguageLinkage L = FD->getLanguageLinkage();
426 // Overloadable functions need mangling.
427 if (FD->hasAttr<OverloadableAttr>())
428 return true;
429
430 // The ABI expects that we would never mangle "typical" user-defined entry
431 // points regardless of visibility or freestanding-ness.
432 //
433 // N.B. This is distinct from asking about "main". "main" has a lot of
434 // special rules associated with it in the standard while these
435 // user-defined entry points are outside of the purview of the standard.
436 // For example, there can be only one definition for "main" in a standards
437 // compliant program; however nothing forbids the existence of wmain and
438 // WinMain in the same translation unit.
439 if (FD->isMSVCRTEntryPoint())
440 return false;
441
442 // C++ functions and those whose names are not a simple identifier need
443 // mangling.
444 if (!FD->getDeclName().isIdentifier() || L == CXXLanguageLinkage)
445 return true;
446
447 // C functions are not mangled.
448 if (L == CLanguageLinkage)
449 return false;
450 }
451
452 // Otherwise, no mangling is done outside C++ mode.
453 if (!getASTContext().getLangOpts().CPlusPlus)
454 return false;
455
456 const VarDecl *VD = dyn_cast<VarDecl>(D);
457 if (VD && !isa<DecompositionDecl>(D)) {
458 // C variables are not mangled.
459 if (VD->isExternC())
460 return false;
461
462 // Variables at global scope with non-internal linkage are not mangled.
463 const DeclContext *DC = getEffectiveDeclContext(D);
464 // Check for extern variable declared locally.
465 if (DC->isFunctionOrMethod() && D->hasLinkage())
466 while (!DC->isNamespace() && !DC->isTranslationUnit())
467 DC = getEffectiveParentContext(DC);
468
469 if (DC->isTranslationUnit() && D->getFormalLinkage() == InternalLinkage &&
470 !isa<VarTemplateSpecializationDecl>(D) &&
471 D->getIdentifier() != nullptr)
472 return false;
473 }
474
475 return true;
476}
477
478bool
479MicrosoftMangleContextImpl::shouldMangleStringLiteral(const StringLiteral *SL) {
480 return true;
481}
482
483void MicrosoftCXXNameMangler::mangle(const NamedDecl *D, StringRef Prefix) {
484 // MSVC doesn't mangle C++ names the same way it mangles extern "C" names.
485 // Therefore it's really important that we don't decorate the
486 // name with leading underscores or leading/trailing at signs. So, by
487 // default, we emit an asm marker at the start so we get the name right.
488 // Callers can override this with a custom prefix.
489
490 // <mangled-name> ::= ? <name> <type-encoding>
491 Out << Prefix;
492 mangleName(D);
493 if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
494 mangleFunctionEncoding(FD, Context.shouldMangleDeclName(FD));
495 else if (const VarDecl *VD = dyn_cast<VarDecl>(D))
496 mangleVariableEncoding(VD);
497 else
498 llvm_unreachable("Tried to mangle unexpected NamedDecl!")::llvm::llvm_unreachable_internal("Tried to mangle unexpected NamedDecl!"
, "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 498)
;
499}
500
501void MicrosoftCXXNameMangler::mangleFunctionEncoding(const FunctionDecl *FD,
502 bool ShouldMangle) {
503 // <type-encoding> ::= <function-class> <function-type>
504
505 // Since MSVC operates on the type as written and not the canonical type, it
506 // actually matters which decl we have here. MSVC appears to choose the
507 // first, since it is most likely to be the declaration in a header file.
508 FD = FD->getFirstDecl();
509
510 // We should never ever see a FunctionNoProtoType at this point.
511 // We don't even know how to mangle their types anyway :).
512 const FunctionProtoType *FT = FD->getType()->castAs<FunctionProtoType>();
513
514 // extern "C" functions can hold entities that must be mangled.
515 // As it stands, these functions still need to get expressed in the full
516 // external name. They have their class and type omitted, replaced with '9'.
517 if (ShouldMangle) {
518 // We would like to mangle all extern "C" functions using this additional
519 // component but this would break compatibility with MSVC's behavior.
520 // Instead, do this when we know that compatibility isn't important (in
521 // other words, when it is an overloaded extern "C" function).
522 if (FD->isExternC() && FD->hasAttr<OverloadableAttr>())
523 Out << "$$J0";
524
525 mangleFunctionClass(FD);
526
527 mangleFunctionType(FT, FD, false, false);
528 } else {
529 Out << '9';
530 }
531}
532
533void MicrosoftCXXNameMangler::mangleVariableEncoding(const VarDecl *VD) {
534 // <type-encoding> ::= <storage-class> <variable-type>
535 // <storage-class> ::= 0 # private static member
536 // ::= 1 # protected static member
537 // ::= 2 # public static member
538 // ::= 3 # global
539 // ::= 4 # static local
540
541 // The first character in the encoding (after the name) is the storage class.
542 if (VD->isStaticDataMember()) {
543 // If it's a static member, it also encodes the access level.
544 switch (VD->getAccess()) {
545 default:
546 case AS_private: Out << '0'; break;
547 case AS_protected: Out << '1'; break;
548 case AS_public: Out << '2'; break;
549 }
550 }
551 else if (!VD->isStaticLocal())
552 Out << '3';
553 else
554 Out << '4';
555 // Now mangle the type.
556 // <variable-type> ::= <type> <cvr-qualifiers>
557 // ::= <type> <pointee-cvr-qualifiers> # pointers, references
558 // Pointers and references are odd. The type of 'int * const foo;' gets
559 // mangled as 'QAHA' instead of 'PAHB', for example.
560 SourceRange SR = VD->getSourceRange();
561 QualType Ty = VD->getType();
562 if (Ty->isPointerType() || Ty->isReferenceType() ||
563 Ty->isMemberPointerType()) {
564 mangleType(Ty, SR, QMM_Drop);
565 manglePointerExtQualifiers(
566 Ty.getDesugaredType(getASTContext()).getLocalQualifiers(), QualType());
567 if (const MemberPointerType *MPT = Ty->getAs<MemberPointerType>()) {
568 mangleQualifiers(MPT->getPointeeType().getQualifiers(), true);
569 // Member pointers are suffixed with a back reference to the member
570 // pointer's class name.
571 mangleName(MPT->getClass()->getAsCXXRecordDecl());
572 } else
573 mangleQualifiers(Ty->getPointeeType().getQualifiers(), false);
574 } else if (const ArrayType *AT = getASTContext().getAsArrayType(Ty)) {
575 // Global arrays are funny, too.
576 mangleDecayedArrayType(AT);
577 if (AT->getElementType()->isArrayType())
578 Out << 'A';
579 else
580 mangleQualifiers(Ty.getQualifiers(), false);
581 } else {
582 mangleType(Ty, SR, QMM_Drop);
583 mangleQualifiers(Ty.getQualifiers(), false);
584 }
585}
586
587void MicrosoftCXXNameMangler::mangleMemberDataPointer(const CXXRecordDecl *RD,
588 const ValueDecl *VD) {
589 // <member-data-pointer> ::= <integer-literal>
590 // ::= $F <number> <number>
591 // ::= $G <number> <number> <number>
592
593 int64_t FieldOffset;
594 int64_t VBTableOffset;
595 MSInheritanceAttr::Spelling IM = RD->getMSInheritanceModel();
596 if (VD) {
597 FieldOffset = getASTContext().getFieldOffset(VD);
598 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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 599, __PRETTY_FUNCTION__))
599 "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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 599, __PRETTY_FUNCTION__))
;
600 FieldOffset /= getASTContext().getCharWidth();
601
602 VBTableOffset = 0;
603
604 if (IM == MSInheritanceAttr::Keyword_virtual_inheritance)
605 FieldOffset -= getASTContext().getOffsetOfBaseWithVBPtr(RD).getQuantity();
606 } else {
607 FieldOffset = RD->nullFieldOffsetIsZero() ? 0 : -1;
608
609 VBTableOffset = -1;
610 }
611
612 char Code = '\0';
613 switch (IM) {
614 case MSInheritanceAttr::Keyword_single_inheritance: Code = '0'; break;
615 case MSInheritanceAttr::Keyword_multiple_inheritance: Code = '0'; break;
616 case MSInheritanceAttr::Keyword_virtual_inheritance: Code = 'F'; break;
617 case MSInheritanceAttr::Keyword_unspecified_inheritance: Code = 'G'; break;
618 case MSInheritanceAttr::SpellingNotCalculated:
619 llvm_unreachable("not reachable")::llvm::llvm_unreachable_internal("not reachable", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 619)
;
620 }
621
622 Out << '$' << Code;
623
624 mangleNumber(FieldOffset);
625
626 // The C++ standard doesn't allow base-to-derived member pointer conversions
627 // in template parameter contexts, so the vbptr offset of data member pointers
628 // is always zero.
629 if (MSInheritanceAttr::hasVBPtrOffsetField(IM))
630 mangleNumber(0);
631 if (MSInheritanceAttr::hasVBTableOffsetField(IM))
632 mangleNumber(VBTableOffset);
633}
634
635void
636MicrosoftCXXNameMangler::mangleMemberFunctionPointer(const CXXRecordDecl *RD,
637 const CXXMethodDecl *MD) {
638 // <member-function-pointer> ::= $1? <name>
639 // ::= $H? <name> <number>
640 // ::= $I? <name> <number> <number>
641 // ::= $J? <name> <number> <number> <number>
642
643 MSInheritanceAttr::Spelling IM = RD->getMSInheritanceModel();
644
645 char Code = '\0';
646 switch (IM) {
647 case MSInheritanceAttr::Keyword_single_inheritance: Code = '1'; break;
648 case MSInheritanceAttr::Keyword_multiple_inheritance: Code = 'H'; break;
649 case MSInheritanceAttr::Keyword_virtual_inheritance: Code = 'I'; break;
650 case MSInheritanceAttr::Keyword_unspecified_inheritance: Code = 'J'; break;
651 case MSInheritanceAttr::SpellingNotCalculated:
652 llvm_unreachable("not reachable")::llvm::llvm_unreachable_internal("not reachable", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 652)
;
653 }
654
655 // If non-virtual, mangle the name. If virtual, mangle as a virtual memptr
656 // thunk.
657 uint64_t NVOffset = 0;
658 uint64_t VBTableOffset = 0;
659 uint64_t VBPtrOffset = 0;
660 if (MD) {
661 Out << '$' << Code << '?';
662 if (MD->isVirtual()) {
663 MicrosoftVTableContext *VTContext =
664 cast<MicrosoftVTableContext>(getASTContext().getVTableContext());
665 MethodVFTableLocation ML =
666 VTContext->getMethodVFTableLocation(GlobalDecl(MD));
667 mangleVirtualMemPtrThunk(MD, ML);
668 NVOffset = ML.VFPtrOffset.getQuantity();
669 VBTableOffset = ML.VBTableIndex * 4;
670 if (ML.VBase) {
671 const ASTRecordLayout &Layout = getASTContext().getASTRecordLayout(RD);
672 VBPtrOffset = Layout.getVBPtrOffset().getQuantity();
673 }
674 } else {
675 mangleName(MD);
676 mangleFunctionEncoding(MD, /*ShouldMangle=*/true);
677 }
678
679 if (VBTableOffset == 0 &&
680 IM == MSInheritanceAttr::Keyword_virtual_inheritance)
681 NVOffset -= getASTContext().getOffsetOfBaseWithVBPtr(RD).getQuantity();
682 } else {
683 // Null single inheritance member functions are encoded as a simple nullptr.
684 if (IM == MSInheritanceAttr::Keyword_single_inheritance) {
685 Out << "$0A@";
686 return;
687 }
688 if (IM == MSInheritanceAttr::Keyword_unspecified_inheritance)
689 VBTableOffset = -1;
690 Out << '$' << Code;
691 }
692
693 if (MSInheritanceAttr::hasNVOffsetField(/*IsMemberFunction=*/true, IM))
694 mangleNumber(static_cast<uint32_t>(NVOffset));
695 if (MSInheritanceAttr::hasVBPtrOffsetField(IM))
696 mangleNumber(VBPtrOffset);
697 if (MSInheritanceAttr::hasVBTableOffsetField(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()->getAs<FunctionProtoType>());
2
Assuming the object is not a 'FunctionProtoType'
3
Passing null pointer value via 1st parameter 'T'
4
Calling 'MicrosoftCXXNameMangler::mangleCallingConvention'
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~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/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~+201911111502510600c19528f1809/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 : "$$$V");
1525 else if (isa<NonTypeTemplateParmDecl>(Parm))
1526 Out << "$S";
1527 else
1528 llvm_unreachable("unexpected template parameter decl!")::llvm::llvm_unreachable_internal("unexpected template parameter decl!"
, "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 1528)
;
1529 } else {
1530 for (const TemplateArgument &PA : TemplateArgs)
1531 mangleTemplateArg(TD, PA, Parm);
1532 }
1533 break;
1534 }
1535 case TemplateArgument::Template: {
1536 const NamedDecl *ND =
1537 TA.getAsTemplate().getAsTemplateDecl()->getTemplatedDecl();
1538 if (const auto *TD = dyn_cast<TagDecl>(ND)) {
1539 mangleType(TD);
1540 } else if (isa<TypeAliasDecl>(ND)) {
1541 Out << "$$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~+201911111502510600c19528f1809/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 if (PointersAre64Bit &&
1712 (PointeeType.isNull() || !PointeeType->isFunctionType()))
1713 Out << 'E';
1714
1715 if (Quals.hasRestrict())
1716 Out << 'I';
1717
1718 if (Quals.hasUnaligned() ||
1719 (!PointeeType.isNull() && PointeeType.getLocalQualifiers().hasUnaligned()))
1720 Out << 'F';
1721}
1722
1723void MicrosoftCXXNameMangler::manglePointerCVQualifiers(Qualifiers Quals) {
1724 // <pointer-cv-qualifiers> ::= P # no qualifiers
1725 // ::= Q # const
1726 // ::= R # volatile
1727 // ::= S # const volatile
1728 bool HasConst = Quals.hasConst(),
1729 HasVolatile = Quals.hasVolatile();
1730
1731 if (HasConst && HasVolatile) {
1732 Out << 'S';
1733 } else if (HasVolatile) {
1734 Out << 'R';
1735 } else if (HasConst) {
1736 Out << 'Q';
1737 } else {
1738 Out << 'P';
1739 }
1740}
1741
1742void MicrosoftCXXNameMangler::mangleFunctionArgumentType(QualType T,
1743 SourceRange Range) {
1744 // MSVC will backreference two canonically equivalent types that have slightly
1745 // different manglings when mangled alone.
1746
1747 // Decayed types do not match up with non-decayed versions of the same type.
1748 //
1749 // e.g.
1750 // void (*x)(void) will not form a backreference with void x(void)
1751 void *TypePtr;
1752 if (const auto *DT = T->getAs<DecayedType>()) {
1753 QualType OriginalType = DT->getOriginalType();
1754 // All decayed ArrayTypes should be treated identically; as-if they were
1755 // a decayed IncompleteArrayType.
1756 if (const auto *AT = getASTContext().getAsArrayType(OriginalType))
1757 OriginalType = getASTContext().getIncompleteArrayType(
1758 AT->getElementType(), AT->getSizeModifier(),
1759 AT->getIndexTypeCVRQualifiers());
1760
1761 TypePtr = OriginalType.getCanonicalType().getAsOpaquePtr();
1762 // If the original parameter was textually written as an array,
1763 // instead treat the decayed parameter like it's const.
1764 //
1765 // e.g.
1766 // int [] -> int * const
1767 if (OriginalType->isArrayType())
1768 T = T.withConst();
1769 } else {
1770 TypePtr = T.getCanonicalType().getAsOpaquePtr();
1771 }
1772
1773 ArgBackRefMap::iterator Found = FunArgBackReferences.find(TypePtr);
1774
1775 if (Found == FunArgBackReferences.end()) {
1776 size_t OutSizeBefore = Out.tell();
1777
1778 mangleType(T, Range, QMM_Drop);
1779
1780 // See if it's worth creating a back reference.
1781 // Only types longer than 1 character are considered
1782 // and only 10 back references slots are available:
1783 bool LongerThanOneChar = (Out.tell() - OutSizeBefore > 1);
1784 if (LongerThanOneChar && FunArgBackReferences.size() < 10) {
1785 size_t Size = FunArgBackReferences.size();
1786 FunArgBackReferences[TypePtr] = Size;
1787 }
1788 } else {
1789 Out << Found->second;
1790 }
1791}
1792
1793void MicrosoftCXXNameMangler::manglePassObjectSizeArg(
1794 const PassObjectSizeAttr *POSA) {
1795 int Type = POSA->getType();
1796 bool Dynamic = POSA->isDynamic();
1797
1798 auto Iter = PassObjectSizeArgs.insert({Type, Dynamic}).first;
1799 auto *TypePtr = (const void *)&*Iter;
1800 ArgBackRefMap::iterator Found = FunArgBackReferences.find(TypePtr);
1801
1802 if (Found == FunArgBackReferences.end()) {
1803 std::string Name =
1804 Dynamic ? "__pass_dynamic_object_size" : "__pass_object_size";
1805 mangleArtificialTagType(TTK_Enum, Name + llvm::utostr(Type), {"__clang"});
1806
1807 if (FunArgBackReferences.size() < 10) {
1808 size_t Size = FunArgBackReferences.size();
1809 FunArgBackReferences[TypePtr] = Size;
1810 }
1811 } else {
1812 Out << Found->second;
1813 }
1814}
1815
1816void MicrosoftCXXNameMangler::mangleAddressSpaceType(QualType T,
1817 Qualifiers Quals,
1818 SourceRange Range) {
1819 // Address space is mangled as an unqualified templated type in the __clang
1820 // namespace. The demangled version of this is:
1821 // In the case of a language specific address space:
1822 // __clang::struct _AS[language_addr_space]<Type>
1823 // where:
1824 // <language_addr_space> ::= <OpenCL-addrspace> | <CUDA-addrspace>
1825 // <OpenCL-addrspace> ::= "CL" [ "global" | "local" | "constant" |
1826 // "private"| "generic" ]
1827 // <CUDA-addrspace> ::= "CU" [ "device" | "constant" | "shared" ]
1828 // Note that the above were chosen to match the Itanium mangling for this.
1829 //
1830 // In the case of a non-language specific address space:
1831 // __clang::struct _AS<TargetAS, Type>
1832 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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 1832, __PRETTY_FUNCTION__))
;
1833 llvm::SmallString<32> ASMangling;
1834 llvm::raw_svector_ostream Stream(ASMangling);
1835 MicrosoftCXXNameMangler Extra(Context, Stream);
1836 Stream << "?$";
1837
1838 LangAS AS = Quals.getAddressSpace();
1839 if (Context.getASTContext().addressSpaceMapManglingFor(AS)) {
1840 unsigned TargetAS = Context.getASTContext().getTargetAddressSpace(AS);
1841 Extra.mangleSourceName("_AS");
1842 Extra.mangleIntegerLiteral(llvm::APSInt::getUnsigned(TargetAS),
1843 /*IsBoolean*/ false);
1844 } else {
1845 switch (AS) {
1846 default:
1847 llvm_unreachable("Not a language specific address space")::llvm::llvm_unreachable_internal("Not a language specific address space"
, "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 1847)
;
1848 case LangAS::opencl_global:
1849 Extra.mangleSourceName("_ASCLglobal");
1850 break;
1851 case LangAS::opencl_local:
1852 Extra.mangleSourceName("_ASCLlocal");
1853 break;
1854 case LangAS::opencl_constant:
1855 Extra.mangleSourceName("_ASCLconstant");
1856 break;
1857 case LangAS::opencl_private:
1858 Extra.mangleSourceName("_ASCLprivate");
1859 break;
1860 case LangAS::opencl_generic:
1861 Extra.mangleSourceName("_ASCLgeneric");
1862 break;
1863 case LangAS::cuda_device:
1864 Extra.mangleSourceName("_ASCUdevice");
1865 break;
1866 case LangAS::cuda_constant:
1867 Extra.mangleSourceName("_ASCUconstant");
1868 break;
1869 case LangAS::cuda_shared:
1870 Extra.mangleSourceName("_ASCUshared");
1871 break;
1872 }
1873 }
1874
1875 Extra.mangleType(T, Range, QMM_Escape);
1876 mangleQualifiers(Qualifiers(), false);
1877 mangleArtificialTagType(TTK_Struct, ASMangling, {"__clang"});
1878}
1879
1880void MicrosoftCXXNameMangler::mangleType(QualType T, SourceRange Range,
1881 QualifierMangleMode QMM) {
1882 // Don't use the canonical types. MSVC includes things like 'const' on
1883 // pointer arguments to function pointers that canonicalization strips away.
1884 T = T.getDesugaredType(getASTContext());
1885 Qualifiers Quals = T.getLocalQualifiers();
1886
1887 if (const ArrayType *AT = getASTContext().getAsArrayType(T)) {
1888 // If there were any Quals, getAsArrayType() pushed them onto the array
1889 // element type.
1890 if (QMM == QMM_Mangle)
1891 Out << 'A';
1892 else if (QMM == QMM_Escape || QMM == QMM_Result)
1893 Out << "$$B";
1894 mangleArrayType(AT);
1895 return;
1896 }
1897
1898 bool IsPointer = T->isAnyPointerType() || T->isMemberPointerType() ||
1899 T->isReferenceType() || T->isBlockPointerType();
1900
1901 switch (QMM) {
1902 case QMM_Drop:
1903 if (Quals.hasObjCLifetime())
1904 Quals = Quals.withoutObjCLifetime();
1905 break;
1906 case QMM_Mangle:
1907 if (const FunctionType *FT = dyn_cast<FunctionType>(T)) {
1908 Out << '6';
1909 mangleFunctionType(FT);
1910 return;
1911 }
1912 mangleQualifiers(Quals, false);
1913 break;
1914 case QMM_Escape:
1915 if (!IsPointer && Quals) {
1916 Out << "$$C";
1917 mangleQualifiers(Quals, false);
1918 }
1919 break;
1920 case QMM_Result:
1921 // Presence of __unaligned qualifier shouldn't affect mangling here.
1922 Quals.removeUnaligned();
1923 if (Quals.hasObjCLifetime())
1924 Quals = Quals.withoutObjCLifetime();
1925 if ((!IsPointer && Quals) || isa<TagType>(T) || isArtificialTagType(T)) {
1926 Out << '?';
1927 mangleQualifiers(Quals, false);
1928 }
1929 break;
1930 }
1931
1932 const Type *ty = T.getTypePtr();
1933
1934 switch (ty->getTypeClass()) {
1935#define ABSTRACT_TYPE(CLASS, PARENT)
1936#define NON_CANONICAL_TYPE(CLASS, PARENT) \
1937 case Type::CLASS: \
1938 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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 1938)
; \
1939 return;
1940#define TYPE(CLASS, PARENT) \
1941 case Type::CLASS: \
1942 mangleType(cast<CLASS##Type>(ty), Quals, Range); \
1943 break;
1944#include "clang/AST/TypeNodes.inc"
1945#undef ABSTRACT_TYPE
1946#undef NON_CANONICAL_TYPE
1947#undef TYPE
1948 }
1949}
1950
1951void MicrosoftCXXNameMangler::mangleType(const BuiltinType *T, Qualifiers,
1952 SourceRange Range) {
1953 // <type> ::= <builtin-type>
1954 // <builtin-type> ::= X # void
1955 // ::= C # signed char
1956 // ::= D # char
1957 // ::= E # unsigned char
1958 // ::= F # short
1959 // ::= G # unsigned short (or wchar_t if it's not a builtin)
1960 // ::= H # int
1961 // ::= I # unsigned int
1962 // ::= J # long
1963 // ::= K # unsigned long
1964 // L # <none>
1965 // ::= M # float
1966 // ::= N # double
1967 // ::= O # long double (__float80 is mangled differently)
1968 // ::= _J # long long, __int64
1969 // ::= _K # unsigned long long, __int64
1970 // ::= _L # __int128
1971 // ::= _M # unsigned __int128
1972 // ::= _N # bool
1973 // _O # <array in parameter>
1974 // ::= _Q # char8_t
1975 // ::= _S # char16_t
1976 // ::= _T # __float80 (Intel)
1977 // ::= _U # char32_t
1978 // ::= _W # wchar_t
1979 // ::= _Z # __float80 (Digital Mars)
1980 switch (T->getKind()) {
1981 case BuiltinType::Void:
1982 Out << 'X';
1983 break;
1984 case BuiltinType::SChar:
1985 Out << 'C';
1986 break;
1987 case BuiltinType::Char_U:
1988 case BuiltinType::Char_S:
1989 Out << 'D';
1990 break;
1991 case BuiltinType::UChar:
1992 Out << 'E';
1993 break;
1994 case BuiltinType::Short:
1995 Out << 'F';
1996 break;
1997 case BuiltinType::UShort:
1998 Out << 'G';
1999 break;
2000 case BuiltinType::Int:
2001 Out << 'H';
2002 break;
2003 case BuiltinType::UInt:
2004 Out << 'I';
2005 break;
2006 case BuiltinType::Long:
2007 Out << 'J';
2008 break;
2009 case BuiltinType::ULong:
2010 Out << 'K';
2011 break;
2012 case BuiltinType::Float:
2013 Out << 'M';
2014 break;
2015 case BuiltinType::Double:
2016 Out << 'N';
2017 break;
2018 // TODO: Determine size and mangle accordingly
2019 case BuiltinType::LongDouble:
2020 Out << 'O';
2021 break;
2022 case BuiltinType::LongLong:
2023 Out << "_J";
2024 break;
2025 case BuiltinType::ULongLong:
2026 Out << "_K";
2027 break;
2028 case BuiltinType::Int128:
2029 Out << "_L";
2030 break;
2031 case BuiltinType::UInt128:
2032 Out << "_M";
2033 break;
2034 case BuiltinType::Bool:
2035 Out << "_N";
2036 break;
2037 case BuiltinType::Char8:
2038 Out << "_Q";
2039 break;
2040 case BuiltinType::Char16:
2041 Out << "_S";
2042 break;
2043 case BuiltinType::Char32:
2044 Out << "_U";
2045 break;
2046 case BuiltinType::WChar_S:
2047 case BuiltinType::WChar_U:
2048 Out << "_W";
2049 break;
2050
2051#define BUILTIN_TYPE(Id, SingletonId)
2052#define PLACEHOLDER_TYPE(Id, SingletonId) \
2053 case BuiltinType::Id:
2054#include "clang/AST/BuiltinTypes.def"
2055 case BuiltinType::Dependent:
2056 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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2056)
;
2057
2058 case BuiltinType::ObjCId:
2059 mangleArtificialTagType(TTK_Struct, "objc_object");
2060 break;
2061 case BuiltinType::ObjCClass:
2062 mangleArtificialTagType(TTK_Struct, "objc_class");
2063 break;
2064 case BuiltinType::ObjCSel:
2065 mangleArtificialTagType(TTK_Struct, "objc_selector");
2066 break;
2067
2068#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
2069 case BuiltinType::Id: \
2070 Out << "PAUocl_" #ImgType "_" #Suffix "@@"; \
2071 break;
2072#include "clang/Basic/OpenCLImageTypes.def"
2073 case BuiltinType::OCLSampler:
2074 Out << "PA";
2075 mangleArtificialTagType(TTK_Struct, "ocl_sampler");
2076 break;
2077 case BuiltinType::OCLEvent:
2078 Out << "PA";
2079 mangleArtificialTagType(TTK_Struct, "ocl_event");
2080 break;
2081 case BuiltinType::OCLClkEvent:
2082 Out << "PA";
2083 mangleArtificialTagType(TTK_Struct, "ocl_clkevent");
2084 break;
2085 case BuiltinType::OCLQueue:
2086 Out << "PA";
2087 mangleArtificialTagType(TTK_Struct, "ocl_queue");
2088 break;
2089 case BuiltinType::OCLReserveID:
2090 Out << "PA";
2091 mangleArtificialTagType(TTK_Struct, "ocl_reserveid");
2092 break;
2093#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
2094 case BuiltinType::Id: \
2095 mangleArtificialTagType(TTK_Struct, "ocl_" #ExtType); \
2096 break;
2097#include "clang/Basic/OpenCLExtensionTypes.def"
2098
2099 case BuiltinType::NullPtr:
2100 Out << "$$T";
2101 break;
2102
2103 case BuiltinType::Float16:
2104 mangleArtificialTagType(TTK_Struct, "_Float16", {"__clang"});
2105 break;
2106
2107 case BuiltinType::Half:
2108 mangleArtificialTagType(TTK_Struct, "_Half", {"__clang"});
2109 break;
2110
2111#define SVE_TYPE(Name, Id, SingletonId) \
2112 case BuiltinType::Id:
2113#include "clang/Basic/AArch64SVEACLETypes.def"
2114 case BuiltinType::ShortAccum:
2115 case BuiltinType::Accum:
2116 case BuiltinType::LongAccum:
2117 case BuiltinType::UShortAccum:
2118 case BuiltinType::UAccum:
2119 case BuiltinType::ULongAccum:
2120 case BuiltinType::ShortFract:
2121 case BuiltinType::Fract:
2122 case BuiltinType::LongFract:
2123 case BuiltinType::UShortFract:
2124 case BuiltinType::UFract:
2125 case BuiltinType::ULongFract:
2126 case BuiltinType::SatShortAccum:
2127 case BuiltinType::SatAccum:
2128 case BuiltinType::SatLongAccum:
2129 case BuiltinType::SatUShortAccum:
2130 case BuiltinType::SatUAccum:
2131 case BuiltinType::SatULongAccum:
2132 case BuiltinType::SatShortFract:
2133 case BuiltinType::SatFract:
2134 case BuiltinType::SatLongFract:
2135 case BuiltinType::SatUShortFract:
2136 case BuiltinType::SatUFract:
2137 case BuiltinType::SatULongFract:
2138 case BuiltinType::Float128: {
2139 DiagnosticsEngine &Diags = Context.getDiags();
2140 unsigned DiagID = Diags.getCustomDiagID(
2141 DiagnosticsEngine::Error, "cannot mangle this built-in %0 type yet");
2142 Diags.Report(Range.getBegin(), DiagID)
2143 << T->getName(Context.getASTContext().getPrintingPolicy()) << Range;
2144 break;
2145 }
2146 }
2147}
2148
2149// <type> ::= <function-type>
2150void MicrosoftCXXNameMangler::mangleType(const FunctionProtoType *T, Qualifiers,
2151 SourceRange) {
2152 // Structors only appear in decls, so at this point we know it's not a
2153 // structor type.
2154 // FIXME: This may not be lambda-friendly.
2155 if (T->getMethodQuals() || T->getRefQualifier() != RQ_None) {
2156 Out << "$$A8@@";
2157 mangleFunctionType(T, /*D=*/nullptr, /*ForceThisQuals=*/true);
2158 } else {
2159 Out << "$$A6";
2160 mangleFunctionType(T);
2161 }
2162}
2163void MicrosoftCXXNameMangler::mangleType(const FunctionNoProtoType *T,
2164 Qualifiers, SourceRange) {
2165 Out << "$$A6";
2166 mangleFunctionType(T);
2167}
2168
2169void MicrosoftCXXNameMangler::mangleFunctionType(const FunctionType *T,
2170 const FunctionDecl *D,
2171 bool ForceThisQuals,
2172 bool MangleExceptionSpec) {
2173 // <function-type> ::= <this-cvr-qualifiers> <calling-convention>
2174 // <return-type> <argument-list> <throw-spec>
2175 const FunctionProtoType *Proto = dyn_cast<FunctionProtoType>(T);
2176
2177 SourceRange Range;
2178 if (D) Range = D->getSourceRange();
2179
2180 bool IsInLambda = false;
2181 bool IsStructor = false, HasThisQuals = ForceThisQuals, IsCtorClosure = false;
2182 CallingConv CC = T->getCallConv();
2183 if (const CXXMethodDecl *MD = dyn_cast_or_null<CXXMethodDecl>(D)) {
2184 if (MD->getParent()->isLambda())
2185 IsInLambda = true;
2186 if (MD->isInstance())
2187 HasThisQuals = true;
2188 if (isa<CXXDestructorDecl>(MD)) {
2189 IsStructor = true;
2190 } else if (isa<CXXConstructorDecl>(MD)) {
2191 IsStructor = true;
2192 IsCtorClosure = (StructorType == Ctor_CopyingClosure ||
2193 StructorType == Ctor_DefaultClosure) &&
2194 isStructorDecl(MD);
2195 if (IsCtorClosure)
2196 CC = getASTContext().getDefaultCallingConvention(
2197 /*IsVariadic=*/false, /*IsCXXMethod=*/true);
2198 }
2199 }
2200
2201 // If this is a C++ instance method, mangle the CVR qualifiers for the
2202 // this pointer.
2203 if (HasThisQuals) {
2204 Qualifiers Quals = Proto->getMethodQuals();
2205 manglePointerExtQualifiers(Quals, /*PointeeType=*/QualType());
2206 mangleRefQualifier(Proto->getRefQualifier());
2207 mangleQualifiers(Quals, /*IsMember=*/false);
2208 }
2209
2210 mangleCallingConvention(CC);
2211
2212 // <return-type> ::= <type>
2213 // ::= @ # structors (they have no declared return type)
2214 if (IsStructor) {
2215 if (isa<CXXDestructorDecl>(D) && isStructorDecl(D)) {
2216 // The scalar deleting destructor takes an extra int argument which is not
2217 // reflected in the AST.
2218 if (StructorType == Dtor_Deleting) {
2219 Out << (PointersAre64Bit ? "PEAXI@Z" : "PAXI@Z");
2220 return;
2221 }
2222 // The vbase destructor returns void which is not reflected in the AST.
2223 if (StructorType == Dtor_Complete) {
2224 Out << "XXZ";
2225 return;
2226 }
2227 }
2228 if (IsCtorClosure) {
2229 // Default constructor closure and copy constructor closure both return
2230 // void.
2231 Out << 'X';
2232
2233 if (StructorType == Ctor_DefaultClosure) {
2234 // Default constructor closure always has no arguments.
2235 Out << 'X';
2236 } else if (StructorType == Ctor_CopyingClosure) {
2237 // Copy constructor closure always takes an unqualified reference.
2238 mangleFunctionArgumentType(getASTContext().getLValueReferenceType(
2239 Proto->getParamType(0)
2240 ->getAs<LValueReferenceType>()
2241 ->getPointeeType(),
2242 /*SpelledAsLValue=*/true),
2243 Range);
2244 Out << '@';
2245 } else {
2246 llvm_unreachable("unexpected constructor closure!")::llvm::llvm_unreachable_internal("unexpected constructor closure!"
, "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2246)
;
2247 }
2248 Out << 'Z';
2249 return;
2250 }
2251 Out << '@';
2252 } else {
2253 QualType ResultType = T->getReturnType();
2254 if (const auto *AT =
2255 dyn_cast_or_null<AutoType>(ResultType->getContainedAutoType())) {
2256 Out << '?';
2257 mangleQualifiers(ResultType.getLocalQualifiers(), /*IsMember=*/false);
2258 Out << '?';
2259 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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2260, __PRETTY_FUNCTION__))
2260 "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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2260, __PRETTY_FUNCTION__))
;
2261 mangleSourceName(AT->isDecltypeAuto() ? "<decltype-auto>" : "<auto>");
2262 Out << '@';
2263 } else if (IsInLambda) {
2264 Out << '@';
2265 } else {
2266 if (ResultType->isVoidType())
2267 ResultType = ResultType.getUnqualifiedType();
2268 mangleType(ResultType, Range, QMM_Result);
2269 }
2270 }
2271
2272 // <argument-list> ::= X # void
2273 // ::= <type>+ @
2274 // ::= <type>* Z # varargs
2275 if (!Proto) {
2276 // Function types without prototypes can arise when mangling a function type
2277 // within an overloadable function in C. We mangle these as the absence of
2278 // any parameter types (not even an empty parameter list).
2279 Out << '@';
2280 } else if (Proto->getNumParams() == 0 && !Proto->isVariadic()) {
2281 Out << 'X';
2282 } else {
2283 // Happens for function pointer type arguments for example.
2284 for (unsigned I = 0, E = Proto->getNumParams(); I != E; ++I) {
2285 mangleFunctionArgumentType(Proto->getParamType(I), Range);
2286 // Mangle each pass_object_size parameter as if it's a parameter of enum
2287 // type passed directly after the parameter with the pass_object_size
2288 // attribute. The aforementioned enum's name is __pass_object_size, and we
2289 // pretend it resides in a top-level namespace called __clang.
2290 //
2291 // FIXME: Is there a defined extension notation for the MS ABI, or is it
2292 // necessary to just cross our fingers and hope this type+namespace
2293 // combination doesn't conflict with anything?
2294 if (D)
2295 if (const auto *P = D->getParamDecl(I)->getAttr<PassObjectSizeAttr>())
2296 manglePassObjectSizeArg(P);
2297 }
2298 // <builtin-type> ::= Z # ellipsis
2299 if (Proto->isVariadic())
2300 Out << 'Z';
2301 else
2302 Out << '@';
2303 }
2304
2305 if (MangleExceptionSpec && getASTContext().getLangOpts().CPlusPlus17 &&
2306 getASTContext().getLangOpts().isCompatibleWithMSVC(
2307 LangOptions::MSVC2017_5))
2308 mangleThrowSpecification(Proto);
2309 else
2310 Out << 'Z';
2311}
2312
2313void MicrosoftCXXNameMangler::mangleFunctionClass(const FunctionDecl *FD) {
2314 // <function-class> ::= <member-function> E? # E designates a 64-bit 'this'
2315 // # pointer. in 64-bit mode *all*
2316 // # 'this' pointers are 64-bit.
2317 // ::= <global-function>
2318 // <member-function> ::= A # private: near
2319 // ::= B # private: far
2320 // ::= C # private: static near
2321 // ::= D # private: static far
2322 // ::= E # private: virtual near
2323 // ::= F # private: virtual far
2324 // ::= I # protected: near
2325 // ::= J # protected: far
2326 // ::= K # protected: static near
2327 // ::= L # protected: static far
2328 // ::= M # protected: virtual near
2329 // ::= N # protected: virtual far
2330 // ::= Q # public: near
2331 // ::= R # public: far
2332 // ::= S # public: static near
2333 // ::= T # public: static far
2334 // ::= U # public: virtual near
2335 // ::= V # public: virtual far
2336 // <global-function> ::= Y # global near
2337 // ::= Z # global far
2338 if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) {
2339 bool IsVirtual = MD->isVirtual();
2340 // When mangling vbase destructor variants, ignore whether or not the
2341 // underlying destructor was defined to be virtual.
2342 if (isa<CXXDestructorDecl>(MD) && isStructorDecl(MD) &&
2343 StructorType == Dtor_Complete) {
2344 IsVirtual = false;
2345 }
2346 switch (MD->getAccess()) {
2347 case AS_none:
2348 llvm_unreachable("Unsupported access specifier")::llvm::llvm_unreachable_internal("Unsupported access specifier"
, "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2348)
;
2349 case AS_private:
2350 if (MD->isStatic())
2351 Out << 'C';
2352 else if (IsVirtual)
2353 Out << 'E';
2354 else
2355 Out << 'A';
2356 break;
2357 case AS_protected:
2358 if (MD->isStatic())
2359 Out << 'K';
2360 else if (IsVirtual)
2361 Out << 'M';
2362 else
2363 Out << 'I';
2364 break;
2365 case AS_public:
2366 if (MD->isStatic())
2367 Out << 'S';
2368 else if (IsVirtual)
2369 Out << 'U';
2370 else
2371 Out << 'Q';
2372 }
2373 } else {
2374 Out << 'Y';
2375 }
2376}
2377void MicrosoftCXXNameMangler::mangleCallingConvention(CallingConv CC) {
2378 // <calling-convention> ::= A # __cdecl
2379 // ::= B # __export __cdecl
2380 // ::= C # __pascal
2381 // ::= D # __export __pascal
2382 // ::= E # __thiscall
2383 // ::= F # __export __thiscall
2384 // ::= G # __stdcall
2385 // ::= H # __export __stdcall
2386 // ::= I # __fastcall
2387 // ::= J # __export __fastcall
2388 // ::= Q # __vectorcall
2389 // ::= w # __regcall
2390 // The 'export' calling conventions are from a bygone era
2391 // (*cough*Win16*cough*) when functions were declared for export with
2392 // that keyword. (It didn't actually export them, it just made them so
2393 // that they could be in a DLL and somebody from another module could call
2394 // them.)
2395
2396 switch (CC) {
2397 default:
2398 llvm_unreachable("Unsupported CC for mangling")::llvm::llvm_unreachable_internal("Unsupported CC for mangling"
, "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2398)
;
2399 case CC_Win64:
2400 case CC_X86_64SysV:
2401 case CC_C: Out << 'A'; break;
2402 case CC_X86Pascal: Out << 'C'; break;
2403 case CC_X86ThisCall: Out << 'E'; break;
2404 case CC_X86StdCall: Out << 'G'; break;
2405 case CC_X86FastCall: Out << 'I'; break;
2406 case CC_X86VectorCall: Out << 'Q'; break;
2407 case CC_Swift: Out << 'S'; break;
2408 case CC_PreserveMost: Out << 'U'; break;
2409 case CC_X86RegCall: Out << 'w'; break;
2410 }
2411}
2412void MicrosoftCXXNameMangler::mangleCallingConvention(const FunctionType *T) {
2413 mangleCallingConvention(T->getCallConv());
5
Called C++ object pointer is null
2414}
2415
2416void MicrosoftCXXNameMangler::mangleThrowSpecification(
2417 const FunctionProtoType *FT) {
2418 // <throw-spec> ::= Z # (default)
2419 // ::= _E # noexcept
2420 if (FT->canThrow())
2421 Out << 'Z';
2422 else
2423 Out << "_E";
2424}
2425
2426void MicrosoftCXXNameMangler::mangleType(const UnresolvedUsingType *T,
2427 Qualifiers, SourceRange Range) {
2428 // Probably should be mangled as a template instantiation; need to see what
2429 // VC does first.
2430 DiagnosticsEngine &Diags = Context.getDiags();
2431 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2432 "cannot mangle this unresolved dependent type yet");
2433 Diags.Report(Range.getBegin(), DiagID)
2434 << Range;
2435}
2436
2437// <type> ::= <union-type> | <struct-type> | <class-type> | <enum-type>
2438// <union-type> ::= T <name>
2439// <struct-type> ::= U <name>
2440// <class-type> ::= V <name>
2441// <enum-type> ::= W4 <name>
2442void MicrosoftCXXNameMangler::mangleTagTypeKind(TagTypeKind TTK) {
2443 switch (TTK) {
2444 case TTK_Union:
2445 Out << 'T';
2446 break;
2447 case TTK_Struct:
2448 case TTK_Interface:
2449 Out << 'U';
2450 break;
2451 case TTK_Class:
2452 Out << 'V';
2453 break;
2454 case TTK_Enum:
2455 Out << "W4";
2456 break;
2457 }
2458}
2459void MicrosoftCXXNameMangler::mangleType(const EnumType *T, Qualifiers,
2460 SourceRange) {
2461 mangleType(cast<TagType>(T)->getDecl());
2462}
2463void MicrosoftCXXNameMangler::mangleType(const RecordType *T, Qualifiers,
2464 SourceRange) {
2465 mangleType(cast<TagType>(T)->getDecl());
2466}
2467void MicrosoftCXXNameMangler::mangleType(const TagDecl *TD) {
2468 mangleTagTypeKind(TD->getTagKind());
2469 mangleName(TD);
2470}
2471
2472// If you add a call to this, consider updating isArtificialTagType() too.
2473void MicrosoftCXXNameMangler::mangleArtificialTagType(
2474 TagTypeKind TK, StringRef UnqualifiedName,
2475 ArrayRef<StringRef> NestedNames) {
2476 // <name> ::= <unscoped-name> {[<named-scope>]+ | [<nested-name>]}? @
2477 mangleTagTypeKind(TK);
2478
2479 // Always start with the unqualified name.
2480 mangleSourceName(UnqualifiedName);
2481
2482 for (auto I = NestedNames.rbegin(), E = NestedNames.rend(); I != E; ++I)
2483 mangleSourceName(*I);
2484
2485 // Terminate the whole name with an '@'.
2486 Out << '@';
2487}
2488
2489// <type> ::= <array-type>
2490// <array-type> ::= <pointer-cvr-qualifiers> <cvr-qualifiers>
2491// [Y <dimension-count> <dimension>+]
2492// <element-type> # as global, E is never required
2493// It's supposed to be the other way around, but for some strange reason, it
2494// isn't. Today this behavior is retained for the sole purpose of backwards
2495// compatibility.
2496void MicrosoftCXXNameMangler::mangleDecayedArrayType(const ArrayType *T) {
2497 // This isn't a recursive mangling, so now we have to do it all in this
2498 // one call.
2499 manglePointerCVQualifiers(T->getElementType().getQualifiers());
2500 mangleType(T->getElementType(), SourceRange());
2501}
2502void MicrosoftCXXNameMangler::mangleType(const ConstantArrayType *T, Qualifiers,
2503 SourceRange) {
2504 llvm_unreachable("Should have been special cased")::llvm::llvm_unreachable_internal("Should have been special cased"
, "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2504)
;
2505}
2506void MicrosoftCXXNameMangler::mangleType(const VariableArrayType *T, Qualifiers,
2507 SourceRange) {
2508 llvm_unreachable("Should have been special cased")::llvm::llvm_unreachable_internal("Should have been special cased"
, "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2508)
;
2509}
2510void MicrosoftCXXNameMangler::mangleType(const DependentSizedArrayType *T,
2511 Qualifiers, SourceRange) {
2512 llvm_unreachable("Should have been special cased")::llvm::llvm_unreachable_internal("Should have been special cased"
, "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2512)
;
2513}
2514void MicrosoftCXXNameMangler::mangleType(const IncompleteArrayType *T,
2515 Qualifiers, SourceRange) {
2516 llvm_unreachable("Should have been special cased")::llvm::llvm_unreachable_internal("Should have been special cased"
, "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2516)
;
2517}
2518void MicrosoftCXXNameMangler::mangleArrayType(const ArrayType *T) {
2519 QualType ElementTy(T, 0);
2520 SmallVector<llvm::APInt, 3> Dimensions;
2521 for (;;) {
2522 if (ElementTy->isConstantArrayType()) {
2523 const ConstantArrayType *CAT =
2524 getASTContext().getAsConstantArrayType(ElementTy);
2525 Dimensions.push_back(CAT->getSize());
2526 ElementTy = CAT->getElementType();
2527 } else if (ElementTy->isIncompleteArrayType()) {
2528 const IncompleteArrayType *IAT =
2529 getASTContext().getAsIncompleteArrayType(ElementTy);
2530 Dimensions.push_back(llvm::APInt(32, 0));
2531 ElementTy = IAT->getElementType();
2532 } else if (ElementTy->isVariableArrayType()) {
2533 const VariableArrayType *VAT =
2534 getASTContext().getAsVariableArrayType(ElementTy);
2535 Dimensions.push_back(llvm::APInt(32, 0));
2536 ElementTy = VAT->getElementType();
2537 } else if (ElementTy->isDependentSizedArrayType()) {
2538 // The dependent expression has to be folded into a constant (TODO).
2539 const DependentSizedArrayType *DSAT =
2540 getASTContext().getAsDependentSizedArrayType(ElementTy);
2541 DiagnosticsEngine &Diags = Context.getDiags();
2542 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2543 "cannot mangle this dependent-length array yet");
2544 Diags.Report(DSAT->getSizeExpr()->getExprLoc(), DiagID)
2545 << DSAT->getBracketsRange();
2546 return;
2547 } else {
2548 break;
2549 }
2550 }
2551 Out << 'Y';
2552 // <dimension-count> ::= <number> # number of extra dimensions
2553 mangleNumber(Dimensions.size());
2554 for (const llvm::APInt &Dimension : Dimensions)
2555 mangleNumber(Dimension.getLimitedValue());
2556 mangleType(ElementTy, SourceRange(), QMM_Escape);
2557}
2558
2559// <type> ::= <pointer-to-member-type>
2560// <pointer-to-member-type> ::= <pointer-cvr-qualifiers> <cvr-qualifiers>
2561// <class name> <type>
2562void MicrosoftCXXNameMangler::mangleType(const MemberPointerType *T,
2563 Qualifiers Quals, SourceRange Range) {
2564 QualType PointeeType = T->getPointeeType();
2565 manglePointerCVQualifiers(Quals);
2566 manglePointerExtQualifiers(Quals, PointeeType);
2567 if (const FunctionProtoType *FPT = PointeeType->getAs<FunctionProtoType>()) {
2568 Out << '8';
2569 mangleName(T->getClass()->castAs<RecordType>()->getDecl());
2570 mangleFunctionType(FPT, nullptr, true);
2571 } else {
2572 mangleQualifiers(PointeeType.getQualifiers(), true);
2573 mangleName(T->getClass()->castAs<RecordType>()->getDecl());
2574 mangleType(PointeeType, Range, QMM_Drop);
2575 }
2576}
2577
2578void MicrosoftCXXNameMangler::mangleType(const TemplateTypeParmType *T,
2579 Qualifiers, SourceRange Range) {
2580 DiagnosticsEngine &Diags = Context.getDiags();
2581 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2582 "cannot mangle this template type parameter type yet");
2583 Diags.Report(Range.getBegin(), DiagID)
2584 << Range;
2585}
2586
2587void MicrosoftCXXNameMangler::mangleType(const SubstTemplateTypeParmPackType *T,
2588 Qualifiers, SourceRange Range) {
2589 DiagnosticsEngine &Diags = Context.getDiags();
2590 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2591 "cannot mangle this substituted parameter pack yet");
2592 Diags.Report(Range.getBegin(), DiagID)
2593 << Range;
2594}
2595
2596// <type> ::= <pointer-type>
2597// <pointer-type> ::= E? <pointer-cvr-qualifiers> <cvr-qualifiers> <type>
2598// # the E is required for 64-bit non-static pointers
2599void MicrosoftCXXNameMangler::mangleType(const PointerType *T, Qualifiers Quals,
2600 SourceRange Range) {
2601 QualType PointeeType = T->getPointeeType();
2602 manglePointerCVQualifiers(Quals);
2603 manglePointerExtQualifiers(Quals, PointeeType);
2604
2605 if (PointeeType.getQualifiers().hasAddressSpace())
2606 mangleAddressSpaceType(PointeeType, PointeeType.getQualifiers(), Range);
2607 else
2608 mangleType(PointeeType, Range);
2609}
2610
2611void MicrosoftCXXNameMangler::mangleType(const ObjCObjectPointerType *T,
2612 Qualifiers Quals, SourceRange Range) {
2613 QualType PointeeType = T->getPointeeType();
2614 switch (Quals.getObjCLifetime()) {
2615 case Qualifiers::OCL_None:
2616 case Qualifiers::OCL_ExplicitNone:
2617 break;
2618 case Qualifiers::OCL_Autoreleasing:
2619 case Qualifiers::OCL_Strong:
2620 case Qualifiers::OCL_Weak:
2621 return mangleObjCLifetime(PointeeType, Quals, Range);
2622 }
2623 manglePointerCVQualifiers(Quals);
2624 manglePointerExtQualifiers(Quals, PointeeType);
2625 mangleType(PointeeType, Range);
2626}
2627
2628// <type> ::= <reference-type>
2629// <reference-type> ::= A E? <cvr-qualifiers> <type>
2630// # the E is required for 64-bit non-static lvalue references
2631void MicrosoftCXXNameMangler::mangleType(const LValueReferenceType *T,
2632 Qualifiers Quals, SourceRange Range) {
2633 QualType PointeeType = T->getPointeeType();
2634 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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2634, __PRETTY_FUNCTION__))
;
2635 Out << 'A';
2636 manglePointerExtQualifiers(Quals, PointeeType);
2637 mangleType(PointeeType, Range);
2638}
2639
2640// <type> ::= <r-value-reference-type>
2641// <r-value-reference-type> ::= $$Q E? <cvr-qualifiers> <type>
2642// # the E is required for 64-bit non-static rvalue references
2643void MicrosoftCXXNameMangler::mangleType(const RValueReferenceType *T,
2644 Qualifiers Quals, SourceRange Range) {
2645 QualType PointeeType = T->getPointeeType();
2646 assert(!Quals.hasConst() && !Quals.hasVolatile() && "unexpected qualifier!")((!Quals.hasConst() && !Quals.hasVolatile() &&
"unexpected qualifier!") ? static_cast<void> (0) : __assert_fail
("!Quals.hasConst() && !Quals.hasVolatile() && \"unexpected qualifier!\""
, "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2646, __PRETTY_FUNCTION__))
;
2647 Out << "$$Q";
2648 manglePointerExtQualifiers(Quals, PointeeType);
2649 mangleType(PointeeType, Range);
2650}
2651
2652void MicrosoftCXXNameMangler::mangleType(const ComplexType *T, Qualifiers,
2653 SourceRange Range) {
2654 QualType ElementType = T->getElementType();
2655
2656 llvm::SmallString<64> TemplateMangling;
2657 llvm::raw_svector_ostream Stream(TemplateMangling);
2658 MicrosoftCXXNameMangler Extra(Context, Stream);
2659 Stream << "?$";
2660 Extra.mangleSourceName("_Complex");
2661 Extra.mangleType(ElementType, Range, QMM_Escape);
2662
2663 mangleArtificialTagType(TTK_Struct, TemplateMangling, {"__clang"});
2664}
2665
2666// Returns true for types that mangleArtificialTagType() gets called for with
2667// TTK_Union, TTK_Struct, TTK_Class and where compatibility with MSVC's
2668// mangling matters.
2669// (It doesn't matter for Objective-C types and the like that cl.exe doesn't
2670// support.)
2671bool MicrosoftCXXNameMangler::isArtificialTagType(QualType T) const {
2672 const Type *ty = T.getTypePtr();
2673 switch (ty->getTypeClass()) {
2674 default:
2675 return false;
2676
2677 case Type::Vector: {
2678 // For ABI compatibility only __m64, __m128(id), and __m256(id) matter,
2679 // but since mangleType(VectorType*) always calls mangleArtificialTagType()
2680 // just always return true (the other vector types are clang-only).
2681 return true;
2682 }
2683 }
2684}
2685
2686void MicrosoftCXXNameMangler::mangleType(const VectorType *T, Qualifiers Quals,
2687 SourceRange Range) {
2688 const BuiltinType *ET = T->getElementType()->getAs<BuiltinType>();
2689 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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2689, __PRETTY_FUNCTION__))
;
2690 uint64_t Width = getASTContext().getTypeSize(T);
2691 // Pattern match exactly the typedefs in our intrinsic headers. Anything that
2692 // doesn't match the Intel types uses a custom mangling below.
2693 size_t OutSizeBefore = Out.tell();
2694 if (!isa<ExtVectorType>(T)) {
2695 llvm::Triple::ArchType AT =
2696 getASTContext().getTargetInfo().getTriple().getArch();
2697 if (AT == llvm::Triple::x86 || AT == llvm::Triple::x86_64) {
2698 if (Width == 64 && ET->getKind() == BuiltinType::LongLong) {
2699 mangleArtificialTagType(TTK_Union, "__m64");
2700 } else if (Width >= 128) {
2701 if (ET->getKind() == BuiltinType::Float)
2702 mangleArtificialTagType(TTK_Union, "__m" + llvm::utostr(Width));
2703 else if (ET->getKind() == BuiltinType::LongLong)
2704 mangleArtificialTagType(TTK_Union, "__m" + llvm::utostr(Width) + 'i');
2705 else if (ET->getKind() == BuiltinType::Double)
2706 mangleArtificialTagType(TTK_Struct, "__m" + llvm::utostr(Width) + 'd');
2707 }
2708 }
2709 }
2710
2711 bool IsBuiltin = Out.tell() != OutSizeBefore;
2712 if (!IsBuiltin) {
2713 // The MS ABI doesn't have a special mangling for vector types, so we define
2714 // our own mangling to handle uses of __vector_size__ on user-specified
2715 // types, and for extensions like __v4sf.
2716
2717 llvm::SmallString<64> TemplateMangling;
2718 llvm::raw_svector_ostream Stream(TemplateMangling);
2719 MicrosoftCXXNameMangler Extra(Context, Stream);
2720 Stream << "?$";
2721 Extra.mangleSourceName("__vector");
2722 Extra.mangleType(QualType(ET, 0), Range, QMM_Escape);
2723 Extra.mangleIntegerLiteral(llvm::APSInt::getUnsigned(T->getNumElements()),
2724 /*IsBoolean=*/false);
2725
2726 mangleArtificialTagType(TTK_Union, TemplateMangling, {"__clang"});
2727 }
2728}
2729
2730void MicrosoftCXXNameMangler::mangleType(const ExtVectorType *T,
2731 Qualifiers Quals, SourceRange Range) {
2732 mangleType(static_cast<const VectorType *>(T), Quals, Range);
2733}
2734
2735void MicrosoftCXXNameMangler::mangleType(const DependentVectorType *T,
2736 Qualifiers, SourceRange Range) {
2737 DiagnosticsEngine &Diags = Context.getDiags();
2738 unsigned DiagID = Diags.getCustomDiagID(
2739 DiagnosticsEngine::Error,
2740 "cannot mangle this dependent-sized vector type yet");
2741 Diags.Report(Range.getBegin(), DiagID) << Range;
2742}
2743
2744void MicrosoftCXXNameMangler::mangleType(const DependentSizedExtVectorType *T,
2745 Qualifiers, SourceRange Range) {
2746 DiagnosticsEngine &Diags = Context.getDiags();
2747 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2748 "cannot mangle this dependent-sized extended vector type yet");
2749 Diags.Report(Range.getBegin(), DiagID)
2750 << Range;
2751}
2752
2753void MicrosoftCXXNameMangler::mangleType(const DependentAddressSpaceType *T,
2754 Qualifiers, SourceRange Range) {
2755 DiagnosticsEngine &Diags = Context.getDiags();
2756 unsigned DiagID = Diags.getCustomDiagID(
2757 DiagnosticsEngine::Error,
2758 "cannot mangle this dependent address space type yet");
2759 Diags.Report(Range.getBegin(), DiagID) << Range;
2760}
2761
2762void MicrosoftCXXNameMangler::mangleType(const ObjCInterfaceType *T, Qualifiers,
2763 SourceRange) {
2764 // ObjC interfaces have structs underlying them.
2765 mangleTagTypeKind(TTK_Struct);
2766 mangleName(T->getDecl());
2767}
2768
2769void MicrosoftCXXNameMangler::mangleType(const ObjCObjectType *T,
2770 Qualifiers Quals, SourceRange Range) {
2771 if (T->isKindOfType())
2772 return mangleObjCKindOfType(T, Quals, Range);
2773
2774 if (T->qual_empty() && !T->isSpecialized())
2775 return mangleType(T->getBaseType(), Range, QMM_Drop);
2776
2777 ArgBackRefMap OuterFunArgsContext;
2778 ArgBackRefMap OuterTemplateArgsContext;
2779 BackRefVec OuterTemplateContext;
2780
2781 FunArgBackReferences.swap(OuterFunArgsContext);
2782 TemplateArgBackReferences.swap(OuterTemplateArgsContext);
2783 NameBackReferences.swap(OuterTemplateContext);
2784
2785 mangleTagTypeKind(TTK_Struct);
2786
2787 Out << "?$";
2788 if (T->isObjCId())
2789 mangleSourceName("objc_object");
2790 else if (T->isObjCClass())
2791 mangleSourceName("objc_class");
2792 else
2793 mangleSourceName(T->getInterface()->getName());
2794
2795 for (const auto &Q : T->quals())
2796 mangleObjCProtocol(Q);
2797
2798 if (T->isSpecialized())
2799 for (const auto &TA : T->getTypeArgs())
2800 mangleType(TA, Range, QMM_Drop);
2801
2802 Out << '@';
2803
2804 Out << '@';
2805
2806 FunArgBackReferences.swap(OuterFunArgsContext);
2807 TemplateArgBackReferences.swap(OuterTemplateArgsContext);
2808 NameBackReferences.swap(OuterTemplateContext);
2809}
2810
2811void MicrosoftCXXNameMangler::mangleType(const BlockPointerType *T,
2812 Qualifiers Quals, SourceRange Range) {
2813 QualType PointeeType = T->getPointeeType();
2814 manglePointerCVQualifiers(Quals);
2815 manglePointerExtQualifiers(Quals, PointeeType);
2816
2817 Out << "_E";
2818
2819 mangleFunctionType(PointeeType->castAs<FunctionProtoType>());
2820}
2821
2822void MicrosoftCXXNameMangler::mangleType(const InjectedClassNameType *,
2823 Qualifiers, SourceRange) {
2824 llvm_unreachable("Cannot mangle injected class name type.")::llvm::llvm_unreachable_internal("Cannot mangle injected class name type."
, "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2824)
;
2825}
2826
2827void MicrosoftCXXNameMangler::mangleType(const TemplateSpecializationType *T,
2828 Qualifiers, SourceRange Range) {
2829 DiagnosticsEngine &Diags = Context.getDiags();
2830 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2831 "cannot mangle this template specialization type yet");
2832 Diags.Report(Range.getBegin(), DiagID)
2833 << Range;
2834}
2835
2836void MicrosoftCXXNameMangler::mangleType(const DependentNameType *T, Qualifiers,
2837 SourceRange Range) {
2838 DiagnosticsEngine &Diags = Context.getDiags();
2839 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2840 "cannot mangle this dependent name type yet");
2841 Diags.Report(Range.getBegin(), DiagID)
2842 << Range;
2843}
2844
2845void MicrosoftCXXNameMangler::mangleType(
2846 const DependentTemplateSpecializationType *T, Qualifiers,
2847 SourceRange Range) {
2848 DiagnosticsEngine &Diags = Context.getDiags();
2849 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2850 "cannot mangle this dependent template specialization type yet");
2851 Diags.Report(Range.getBegin(), DiagID)
2852 << Range;
2853}
2854
2855void MicrosoftCXXNameMangler::mangleType(const PackExpansionType *T, Qualifiers,
2856 SourceRange Range) {
2857 DiagnosticsEngine &Diags = Context.getDiags();
2858 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2859 "cannot mangle this pack expansion yet");
2860 Diags.Report(Range.getBegin(), DiagID)
2861 << Range;
2862}
2863
2864void MicrosoftCXXNameMangler::mangleType(const TypeOfType *T, Qualifiers,
2865 SourceRange Range) {
2866 DiagnosticsEngine &Diags = Context.getDiags();
2867 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2868 "cannot mangle this typeof(type) yet");
2869 Diags.Report(Range.getBegin(), DiagID)
2870 << Range;
2871}
2872
2873void MicrosoftCXXNameMangler::mangleType(const TypeOfExprType *T, Qualifiers,
2874 SourceRange Range) {
2875 DiagnosticsEngine &Diags = Context.getDiags();
2876 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2877 "cannot mangle this typeof(expression) yet");
2878 Diags.Report(Range.getBegin(), DiagID)
2879 << Range;
2880}
2881
2882void MicrosoftCXXNameMangler::mangleType(const DecltypeType *T, Qualifiers,
2883 SourceRange Range) {
2884 DiagnosticsEngine &Diags = Context.getDiags();
2885 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2886 "cannot mangle this decltype() yet");
2887 Diags.Report(Range.getBegin(), DiagID)
2888 << Range;
2889}
2890
2891void MicrosoftCXXNameMangler::mangleType(const UnaryTransformType *T,
2892 Qualifiers, SourceRange Range) {
2893 DiagnosticsEngine &Diags = Context.getDiags();
2894 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2895 "cannot mangle this unary transform type yet");
2896 Diags.Report(Range.getBegin(), DiagID)
2897 << Range;
2898}
2899
2900void MicrosoftCXXNameMangler::mangleType(const AutoType *T, Qualifiers,
2901 SourceRange Range) {
2902 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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2902, __PRETTY_FUNCTION__))
;
2903
2904 DiagnosticsEngine &Diags = Context.getDiags();
2905 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2906 "cannot mangle this 'auto' type yet");
2907 Diags.Report(Range.getBegin(), DiagID)
2908 << Range;
2909}
2910
2911void MicrosoftCXXNameMangler::mangleType(
2912 const DeducedTemplateSpecializationType *T, Qualifiers, SourceRange Range) {
2913 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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2913, __PRETTY_FUNCTION__))
;
2914
2915 DiagnosticsEngine &Diags = Context.getDiags();
2916 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2917 "cannot mangle this deduced class template specialization type yet");
2918 Diags.Report(Range.getBegin(), DiagID)
2919 << Range;
2920}
2921
2922void MicrosoftCXXNameMangler::mangleType(const AtomicType *T, Qualifiers,
2923 SourceRange Range) {
2924 QualType ValueType = T->getValueType();
2925
2926 llvm::SmallString<64> TemplateMangling;
2927 llvm::raw_svector_ostream Stream(TemplateMangling);
2928 MicrosoftCXXNameMangler Extra(Context, Stream);
2929 Stream << "?$";
2930 Extra.mangleSourceName("_Atomic");
2931 Extra.mangleType(ValueType, Range, QMM_Escape);
2932
2933 mangleArtificialTagType(TTK_Struct, TemplateMangling, {"__clang"});
2934}
2935
2936void MicrosoftCXXNameMangler::mangleType(const PipeType *T, Qualifiers,
2937 SourceRange Range) {
2938 DiagnosticsEngine &Diags = Context.getDiags();
2939 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2940 "cannot mangle this OpenCL pipe type yet");
2941 Diags.Report(Range.getBegin(), DiagID)
2942 << Range;
2943}
2944
2945void MicrosoftMangleContextImpl::mangleCXXName(const NamedDecl *D,
2946 raw_ostream &Out) {
2947 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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2948, __PRETTY_FUNCTION__))
2948 "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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2948, __PRETTY_FUNCTION__))
;
2949 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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2950, __PRETTY_FUNCTION__))
2950 "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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2950, __PRETTY_FUNCTION__))
;
2951
2952 PrettyStackTraceDecl CrashInfo(D, SourceLocation(),
2953 getASTContext().getSourceManager(),
2954 "Mangling declaration");
2955
2956 msvc_hashing_ostream MHO(Out);
2957 MicrosoftCXXNameMangler Mangler(*this, MHO);
2958 return Mangler.mangle(D);
2959}
2960
2961// <this-adjustment> ::= <no-adjustment> | <static-adjustment> |
2962// <virtual-adjustment>
2963// <no-adjustment> ::= A # private near
2964// ::= B # private far
2965// ::= I # protected near
2966// ::= J # protected far
2967// ::= Q # public near
2968// ::= R # public far
2969// <static-adjustment> ::= G <static-offset> # private near
2970// ::= H <static-offset> # private far
2971// ::= O <static-offset> # protected near
2972// ::= P <static-offset> # protected far
2973// ::= W <static-offset> # public near
2974// ::= X <static-offset> # public far
2975// <virtual-adjustment> ::= $0 <virtual-shift> <static-offset> # private near
2976// ::= $1 <virtual-shift> <static-offset> # private far
2977// ::= $2 <virtual-shift> <static-offset> # protected near
2978// ::= $3 <virtual-shift> <static-offset> # protected far
2979// ::= $4 <virtual-shift> <static-offset> # public near
2980// ::= $5 <virtual-shift> <static-offset> # public far
2981// <virtual-shift> ::= <vtordisp-shift> | <vtordispex-shift>
2982// <vtordisp-shift> ::= <offset-to-vtordisp>
2983// <vtordispex-shift> ::= <offset-to-vbptr> <vbase-offset-offset>
2984// <offset-to-vtordisp>
2985static void mangleThunkThisAdjustment(AccessSpecifier AS,
2986 const ThisAdjustment &Adjustment,
2987 MicrosoftCXXNameMangler &Mangler,
2988 raw_ostream &Out) {
2989 if (!Adjustment.Virtual.isEmpty()) {
2990 Out << '$';
2991 char AccessSpec;
2992 switch (AS) {
2993 case AS_none:
2994 llvm_unreachable("Unsupported access specifier")::llvm::llvm_unreachable_internal("Unsupported access specifier"
, "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 2994)
;
2995 case AS_private:
2996 AccessSpec = '0';
2997 break;
2998 case AS_protected:
2999 AccessSpec = '2';
3000 break;
3001 case AS_public:
3002 AccessSpec = '4';
3003 }
3004 if (Adjustment.Virtual.Microsoft.VBPtrOffset) {
3005 Out << 'R' << AccessSpec;
3006 Mangler.mangleNumber(
3007 static_cast<uint32_t>(Adjustment.Virtual.Microsoft.VBPtrOffset));
3008 Mangler.mangleNumber(
3009 static_cast<uint32_t>(Adjustment.Virtual.Microsoft.VBOffsetOffset));
3010 Mangler.mangleNumber(
3011 static_cast<uint32_t>(Adjustment.Virtual.Microsoft.VtordispOffset));
3012 Mangler.mangleNumber(static_cast<uint32_t>(Adjustment.NonVirtual));
3013 } else {
3014 Out << AccessSpec;
3015 Mangler.mangleNumber(
3016 static_cast<uint32_t>(Adjustment.Virtual.Microsoft.VtordispOffset));
3017 Mangler.mangleNumber(-static_cast<uint32_t>(Adjustment.NonVirtual));
3018 }
3019 } else if (Adjustment.NonVirtual != 0) {
3020 switch (AS) {
3021 case AS_none:
3022 llvm_unreachable("Unsupported access specifier")::llvm::llvm_unreachable_internal("Unsupported access specifier"
, "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 3022)
;
3023 case AS_private:
3024 Out << 'G';
3025 break;
3026 case AS_protected:
3027 Out << 'O';
3028 break;
3029 case AS_public:
3030 Out << 'W';
3031 }
3032 Mangler.mangleNumber(-static_cast<uint32_t>(Adjustment.NonVirtual));
3033 } else {
3034 switch (AS) {
3035 case AS_none:
3036 llvm_unreachable("Unsupported access specifier")::llvm::llvm_unreachable_internal("Unsupported access specifier"
, "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 3036)
;
3037 case AS_private:
3038 Out << 'A';
3039 break;
3040 case AS_protected:
3041 Out << 'I';
3042 break;
3043 case AS_public:
3044 Out << 'Q';
3045 }
3046 }
3047}
3048
3049void MicrosoftMangleContextImpl::mangleVirtualMemPtrThunk(
3050 const CXXMethodDecl *MD, const MethodVFTableLocation &ML,
3051 raw_ostream &Out) {
3052 msvc_hashing_ostream MHO(Out);
3053 MicrosoftCXXNameMangler Mangler(*this, MHO);
3054 Mangler.getStream() << '?';
3055 Mangler.mangleVirtualMemPtrThunk(MD, ML);
1
Calling 'MicrosoftCXXNameMangler::mangleVirtualMemPtrThunk'
3056}
3057
3058void MicrosoftMangleContextImpl::mangleThunk(const CXXMethodDecl *MD,
3059 const ThunkInfo &Thunk,
3060 raw_ostream &Out) {
3061 msvc_hashing_ostream MHO(Out);
3062 MicrosoftCXXNameMangler Mangler(*this, MHO);
3063 Mangler.getStream() << '?';
3064 Mangler.mangleName(MD);
3065
3066 // Usually the thunk uses the access specifier of the new method, but if this
3067 // is a covariant return thunk, then MSVC always uses the public access
3068 // specifier, and we do the same.
3069 AccessSpecifier AS = Thunk.Return.isEmpty() ? MD->getAccess() : AS_public;
3070 mangleThunkThisAdjustment(AS, Thunk.This, Mangler, MHO);
3071
3072 if (!Thunk.Return.isEmpty())
3073 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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 3074, __PRETTY_FUNCTION__))
3074 "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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 3074, __PRETTY_FUNCTION__))
;
3075
3076 const CXXMethodDecl *DeclForFPT = Thunk.Method ? Thunk.Method : MD;
3077 Mangler.mangleFunctionType(
3078 DeclForFPT->getType()->castAs<FunctionProtoType>(), MD);
3079}
3080
3081void MicrosoftMangleContextImpl::mangleCXXDtorThunk(
3082 const CXXDestructorDecl *DD, CXXDtorType Type,
3083 const ThisAdjustment &Adjustment, raw_ostream &Out) {
3084 // FIXME: Actually, the dtor thunk should be emitted for vector deleting
3085 // dtors rather than scalar deleting dtors. Just use the vector deleting dtor
3086 // mangling manually until we support both deleting dtor types.
3087 assert(Type == Dtor_Deleting)((Type == Dtor_Deleting) ? static_cast<void> (0) : __assert_fail
("Type == Dtor_Deleting", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 3087, __PRETTY_FUNCTION__))
;
3088 msvc_hashing_ostream MHO(Out);
3089 MicrosoftCXXNameMangler Mangler(*this, MHO, DD, Type);
3090 Mangler.getStream() << "??_E";
3091 Mangler.mangleName(DD->getParent());
3092 mangleThunkThisAdjustment(DD->getAccess(), Adjustment, Mangler, MHO);
3093 Mangler.mangleFunctionType(DD->getType()->castAs<FunctionProtoType>(), DD);
3094}
3095
3096void MicrosoftMangleContextImpl::mangleCXXVFTable(
3097 const CXXRecordDecl *Derived, ArrayRef<const CXXRecordDecl *> BasePath,
3098 raw_ostream &Out) {
3099 // <mangled-name> ::= ?_7 <class-name> <storage-class>
3100 // <cvr-qualifiers> [<name>] @
3101 // NOTE: <cvr-qualifiers> here is always 'B' (const). <storage-class>
3102 // is always '6' for vftables.
3103 msvc_hashing_ostream MHO(Out);
3104 MicrosoftCXXNameMangler Mangler(*this, MHO);
3105 if (Derived->hasAttr<DLLImportAttr>())
3106 Mangler.getStream() << "??_S";
3107 else
3108 Mangler.getStream() << "??_7";
3109 Mangler.mangleName(Derived);
3110 Mangler.getStream() << "6B"; // '6' for vftable, 'B' for const.
3111 for (const CXXRecordDecl *RD : BasePath)
3112 Mangler.mangleName(RD);
3113 Mangler.getStream() << '@';
3114}
3115
3116void MicrosoftMangleContextImpl::mangleCXXVBTable(
3117 const CXXRecordDecl *Derived, ArrayRef<const CXXRecordDecl *> BasePath,
3118 raw_ostream &Out) {
3119 // <mangled-name> ::= ?_8 <class-name> <storage-class>
3120 // <cvr-qualifiers> [<name>] @
3121 // NOTE: <cvr-qualifiers> here is always 'B' (const). <storage-class>
3122 // is always '7' for vbtables.
3123 msvc_hashing_ostream MHO(Out);
3124 MicrosoftCXXNameMangler Mangler(*this, MHO);
3125 Mangler.getStream() << "??_8";
3126 Mangler.mangleName(Derived);
3127 Mangler.getStream() << "7B"; // '7' for vbtable, 'B' for const.
3128 for (const CXXRecordDecl *RD : BasePath)
3129 Mangler.mangleName(RD);
3130 Mangler.getStream() << '@';
3131}
3132
3133void MicrosoftMangleContextImpl::mangleCXXRTTI(QualType T, raw_ostream &Out) {
3134 msvc_hashing_ostream MHO(Out);
3135 MicrosoftCXXNameMangler Mangler(*this, MHO);
3136 Mangler.getStream() << "??_R0";
3137 Mangler.mangleType(T, SourceRange(), MicrosoftCXXNameMangler::QMM_Result);
3138 Mangler.getStream() << "@8";
3139}
3140
3141void MicrosoftMangleContextImpl::mangleCXXRTTIName(QualType T,
3142 raw_ostream &Out) {
3143 MicrosoftCXXNameMangler Mangler(*this, Out);
3144 Mangler.getStream() << '.';
3145 Mangler.mangleType(T, SourceRange(), MicrosoftCXXNameMangler::QMM_Result);
3146}
3147
3148void MicrosoftMangleContextImpl::mangleCXXVirtualDisplacementMap(
3149 const CXXRecordDecl *SrcRD, const CXXRecordDecl *DstRD, raw_ostream &Out) {
3150 msvc_hashing_ostream MHO(Out);
3151 MicrosoftCXXNameMangler Mangler(*this, MHO);
3152 Mangler.getStream() << "??_K";
3153 Mangler.mangleName(SrcRD);
3154 Mangler.getStream() << "$C";
3155 Mangler.mangleName(DstRD);
3156}
3157
3158void MicrosoftMangleContextImpl::mangleCXXThrowInfo(QualType T, bool IsConst,
3159 bool IsVolatile,
3160 bool IsUnaligned,
3161 uint32_t NumEntries,
3162 raw_ostream &Out) {
3163 msvc_hashing_ostream MHO(Out);
3164 MicrosoftCXXNameMangler Mangler(*this, MHO);
3165 Mangler.getStream() << "_TI";
3166 if (IsConst)
3167 Mangler.getStream() << 'C';
3168 if (IsVolatile)
3169 Mangler.getStream() << 'V';
3170 if (IsUnaligned)
3171 Mangler.getStream() << 'U';
3172 Mangler.getStream() << NumEntries;
3173 Mangler.mangleType(T, SourceRange(), MicrosoftCXXNameMangler::QMM_Result);
3174}
3175
3176void MicrosoftMangleContextImpl::mangleCXXCatchableTypeArray(
3177 QualType T, uint32_t NumEntries, raw_ostream &Out) {
3178 msvc_hashing_ostream MHO(Out);
3179 MicrosoftCXXNameMangler Mangler(*this, MHO);
3180 Mangler.getStream() << "_CTA";
3181 Mangler.getStream() << NumEntries;
3182 Mangler.mangleType(T, SourceRange(), MicrosoftCXXNameMangler::QMM_Result);
3183}
3184
3185void MicrosoftMangleContextImpl::mangleCXXCatchableType(
3186 QualType T, const CXXConstructorDecl *CD, CXXCtorType CT, uint32_t Size,
3187 uint32_t NVOffset, int32_t VBPtrOffset, uint32_t VBIndex,
3188 raw_ostream &Out) {
3189 MicrosoftCXXNameMangler Mangler(*this, Out);
3190 Mangler.getStream() << "_CT";
3191
3192 llvm::SmallString<64> RTTIMangling;
3193 {
3194 llvm::raw_svector_ostream Stream(RTTIMangling);
3195 msvc_hashing_ostream MHO(Stream);
3196 mangleCXXRTTI(T, MHO);
3197 }
3198 Mangler.getStream() << RTTIMangling;
3199
3200 // VS2015 and VS2017.1 omit the copy-constructor in the mangled name but
3201 // both older and newer versions include it.
3202 // FIXME: It is known that the Ctor is present in 2013, and in 2017.7
3203 // (_MSC_VER 1914) and newer, and that it's omitted in 2015 and 2017.4
3204 // (_MSC_VER 1911), but it's unknown when exactly it reappeared (1914?
3205 // Or 1912, 1913 aleady?).
3206 bool OmitCopyCtor = getASTContext().getLangOpts().isCompatibleWithMSVC(
3207 LangOptions::MSVC2015) &&
3208 !getASTContext().getLangOpts().isCompatibleWithMSVC(
3209 LangOptions::MSVC2017_7);
3210 llvm::SmallString<64> CopyCtorMangling;
3211 if (!OmitCopyCtor && CD) {
3212 llvm::raw_svector_ostream Stream(CopyCtorMangling);
3213 msvc_hashing_ostream MHO(Stream);
3214 mangleCXXCtor(CD, CT, MHO);
3215 }
3216 Mangler.getStream() << CopyCtorMangling;
3217
3218 Mangler.getStream() << Size;
3219 if (VBPtrOffset == -1) {
3220 if (NVOffset) {
3221 Mangler.getStream() << NVOffset;
3222 }
3223 } else {
3224 Mangler.getStream() << NVOffset;
3225 Mangler.getStream() << VBPtrOffset;
3226 Mangler.getStream() << VBIndex;
3227 }
3228}
3229
3230void MicrosoftMangleContextImpl::mangleCXXRTTIBaseClassDescriptor(
3231 const CXXRecordDecl *Derived, uint32_t NVOffset, int32_t VBPtrOffset,
3232 uint32_t VBTableOffset, uint32_t Flags, raw_ostream &Out) {
3233 msvc_hashing_ostream MHO(Out);
3234 MicrosoftCXXNameMangler Mangler(*this, MHO);
3235 Mangler.getStream() << "??_R1";
3236 Mangler.mangleNumber(NVOffset);
3237 Mangler.mangleNumber(VBPtrOffset);
3238 Mangler.mangleNumber(VBTableOffset);
3239 Mangler.mangleNumber(Flags);
3240 Mangler.mangleName(Derived);
3241 Mangler.getStream() << "8";
3242}
3243
3244void MicrosoftMangleContextImpl::mangleCXXRTTIBaseClassArray(
3245 const CXXRecordDecl *Derived, raw_ostream &Out) {
3246 msvc_hashing_ostream MHO(Out);
3247 MicrosoftCXXNameMangler Mangler(*this, MHO);
3248 Mangler.getStream() << "??_R2";
3249 Mangler.mangleName(Derived);
3250 Mangler.getStream() << "8";
3251}
3252
3253void MicrosoftMangleContextImpl::mangleCXXRTTIClassHierarchyDescriptor(
3254 const CXXRecordDecl *Derived, raw_ostream &Out) {
3255 msvc_hashing_ostream MHO(Out);
3256 MicrosoftCXXNameMangler Mangler(*this, MHO);
3257 Mangler.getStream() << "??_R3";
3258 Mangler.mangleName(Derived);
3259 Mangler.getStream() << "8";
3260}
3261
3262void MicrosoftMangleContextImpl::mangleCXXRTTICompleteObjectLocator(
3263 const CXXRecordDecl *Derived, ArrayRef<const CXXRecordDecl *> BasePath,
3264 raw_ostream &Out) {
3265 // <mangled-name> ::= ?_R4 <class-name> <storage-class>
3266 // <cvr-qualifiers> [<name>] @
3267 // NOTE: <cvr-qualifiers> here is always 'B' (const). <storage-class>
3268 // is always '6' for vftables.
3269 llvm::SmallString<64> VFTableMangling;
3270 llvm::raw_svector_ostream Stream(VFTableMangling);
3271 mangleCXXVFTable(Derived, BasePath, Stream);
3272
3273 if (VFTableMangling.startswith("??@")) {
3274 assert(VFTableMangling.endswith("@"))((VFTableMangling.endswith("@")) ? static_cast<void> (0
) : __assert_fail ("VFTableMangling.endswith(\"@\")", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 3274, __PRETTY_FUNCTION__))
;
3275 Out << VFTableMangling << "??_R4@";
3276 return;
3277 }
3278
3279 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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 3280, __PRETTY_FUNCTION__))
3280 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~+201911111502510600c19528f1809/clang/lib/AST/MicrosoftMangle.cpp"
, 3280, __PRETTY_FUNCTION__))
;
3281
3282 Out << "??_R4" << StringRef(VFTableMangling).drop_front(4);
3283}
3284
3285void MicrosoftMangleContextImpl::mangleSEHFilterExpression(
3286 const NamedDecl *EnclosingDecl, raw_ostream &Out) {
3287 msvc_hashing_ostream MHO(Out);
3288 MicrosoftCXXNameMangler Mangler(*this, MHO);
3289 // The function body is in the same comdat as the function with the handler,
3290 // so the numbering here doesn't have to be the same across TUs.
3291 //
3292 // <mangled-name> ::= ?filt$ <filter-number> @0
3293 Mangler.getStream() << "?filt$" << SEHFilterIds[EnclosingDecl]++ << "@0@";
3294 Mangler.mangleName(EnclosingDecl);
3295}
3296
3297void MicrosoftMangleContextImpl::mangleSEHFinallyBlock(
3298 const NamedDecl *EnclosingDecl, raw_ostream &Out) {
3299 msvc_hashing_ostream MHO(Out);
3300 MicrosoftCXXNameMangler Mangler(*this, MHO);
3301 // The function body is in the same comdat as the function with the handler,
3302 // so the numbering here doesn't have to be the same across TUs.
3303 //
3304 // <mangled-name> ::= ?fin$ <filter-number> @0
3305 Mangler.getStream() << "?fin$" << SEHFinallyIds[EnclosingDecl]++ << "@0@";
3306 Mangler.mangleName(EnclosingDecl);
3307}
3308
3309void MicrosoftMangleContextImpl::mangleTypeName(QualType T, raw_ostream &Out) {
3310 // This is just a made up unique string for the purposes of tbaa. undname
3311 // does *not* know how to demangle it.
3312 MicrosoftCXXNameMangler Mangler(*this, Out);
3313 Mangler.getStream() << '?';
3314 Mangler.mangleType(T, SourceRange());
3315}
3316
3317void MicrosoftMangleContextImpl::mangleCXXCtor(const CXXConstructorDecl *D,
3318 CXXCtorType Type,
3319 raw_ostream &Out) {
3320 msvc_hashing_ostream MHO(Out);
3321 MicrosoftCXXNameMangler mangler(*this, MHO, D, Type);
3322 mangler.mangle(D);
3323}
3324
3325void MicrosoftMangleContextImpl::mangleCXXDtor(const CXXDestructorDecl *D,
3326 CXXDtorType Type,
3327 raw_ostream &Out) {
3328 msvc_hashing_ostream MHO(Out);
3329 MicrosoftCXXNameMangler mangler(*this, MHO, D, Type);
3330 mangler.mangle(D);
3331}
3332
3333void MicrosoftMangleContextImpl::mangleReferenceTemporary(
3334 const VarDecl *VD, unsigned ManglingNumber, raw_ostream &Out) {
3335 msvc_hashing_ostream MHO(Out);
3336 MicrosoftCXXNameMangler Mangler(*this, MHO);
3337
3338 Mangler.getStream() << "?$RT" << ManglingNumber << '@';
3339 Mangler.mangle(VD, "");
3340}
3341
3342void MicrosoftMangleContextImpl::mangleThreadSafeStaticGuardVariable(
3343 const VarDecl *VD, unsigned GuardNum, raw_ostream &Out) {
3344 msvc_hashing_ostream MHO(Out);
3345 MicrosoftCXXNameMangler Mangler(*this, MHO);
3346
3347 Mangler.getStream() << "?$TSS" << GuardNum << '@';
3348 Mangler.mangleNestedName(VD);
3349 Mangler.getStream() << "@4HA";
3350}
3351
3352void MicrosoftMangleContextImpl::mangleStaticGuardVariable(const VarDecl *VD,
3353 raw_ostream &Out) {
3354 // <guard-name> ::= ?_B <postfix> @5 <scope-depth>
3355 // ::= ?__J <postfix> @5 <scope-depth>
3356 // ::= ?$S <guard-num> @ <postfix> @4IA
3357
3358 // The first mangling is what MSVC uses to guard static locals in inline
3359 // functions. It uses a different mangling in external functions to support
3360 // guarding more than 32 variables. MSVC rejects inline functions with more
3361 // than 32 static locals. We don't fully implement the second mangling
3362 // because those guards are not externally visible, and instead use LLVM's
3363 // default renaming when creating a new guard variable.
3364 msvc_hashing_ostream MHO(Out);
3365 MicrosoftCXXNameMangler Mangler(*this, MHO);
3366
3367 bool Visible = VD->isExternallyVisible();
3368 if (Visible) {
3369 Mangler.getStream() << (VD->getTLSKind() ? "??__J" : "??_B");
3370 } else {
3371 Mangler.getStream() << "?$S1@";
3372 }
3373 unsigned ScopeDepth = 0;
3374 if (Visible && !getNextDiscriminator(VD, ScopeDepth))
3375 // If we do not have a discriminator and are emitting a guard variable for
3376 // use at global scope, then mangling the nested name will not be enough to
3377 // remove ambiguities.
3378 Mangler.mangle(VD, "");
3379 else
3380 Mangler.mangleNestedName(VD);
3381 Mangler.getStream() << (Visible ? "@5" : "@4IA");
3382 if (ScopeDepth)
3383 Mangler.mangleNumber(ScopeDepth);
3384}
3385
3386void MicrosoftMangleContextImpl::mangleInitFiniStub(const VarDecl *D,
3387 char CharCode,
3388 raw_ostream &Out) {
3389 msvc_hashing_ostream MHO(Out);
3390 MicrosoftCXXNameMangler Mangler(*this, MHO);
3391 Mangler.getStream() << "??__" << CharCode;
3392 if (D->isStaticDataMember()) {
3393 Mangler.getStream() << '?';
3394 Mangler.mangleName(D);
3395 Mangler.mangleVariableEncoding(D);
3396 Mangler.getStream() << "@@";
3397 } else {
3398 Mangler.mangleName(D);
3399 }
3400 // This is the function class mangling. These stubs are global, non-variadic,
3401 // cdecl functions that return void and take no args.
3402 Mangler.getStream() << "YAXXZ";
3403}
3404
3405void MicrosoftMangleContextImpl::mangleDynamicInitializer(const VarDecl *D,
3406 raw_ostream &Out) {
3407 // <initializer-name> ::= ?__E <name> YAXXZ
3408 mangleInitFiniStub(D, 'E', Out);
3409}
3410
3411void
3412MicrosoftMangleContextImpl::mangleDynamicAtExitDestructor(const VarDecl *D,
3413 raw_ostream &Out) {
3414 // <destructor-name> ::= ?__F <name> YAXXZ
3415 mangleInitFiniStub(D, 'F', Out);
3416}
3417
3418void MicrosoftMangleContextImpl::mangleStringLiteral(const StringLiteral *SL,
3419 raw_ostream &Out) {
3420 // <char-type> ::= 0 # char, char16_t, char32_t
3421 // # (little endian char data in mangling)
3422 // ::= 1 # wchar_t (big endian char data in mangling)
3423 //
3424 // <literal-length> ::= <non-negative integer> # the length of the literal
3425 //
3426 // <encoded-crc> ::= <hex digit>+ @ # crc of the literal including
3427 // # trailing null bytes
3428 //
3429 // <encoded-string> ::= <simple character> # uninteresting character
3430 // ::= '?$' <hex digit> <hex digit> # these two nibbles
3431 // # encode the byte for the
3432 // # character
3433 // ::= '?' [a-z] # \xe1 - \xfa
3434 // ::= '?' [A-Z] # \xc1 - \xda
3435 // ::= '?' [0-9] # [,/\:. \n\t'-]
3436 //
3437 // <literal> ::= '??_C@_' <char-type> <literal-length> <encoded-crc>
3438 // <encoded-string> '@'
3439 MicrosoftCXXNameMangler Mangler(*this, Out);
3440 Mangler.getStream() << "??_C@_";
3441
3442 // The actual string length might be different from that of the string literal
3443 // in cases like:
3444 // char foo[3] = "foobar";
3445 // char bar[42] = "foobar";
3446 // Where it is truncated or zero-padded to fit the array. This is the length
3447 // used for mangling, and any trailing null-bytes also need to be mangled.
3448 unsigned StringLength = getASTContext()
3449 .getAsConstantArrayType(SL->getType())
3450 ->getSize()
3451 .getZExtValue();
3452 unsigned StringByteLength = StringLength * SL->getCharByteWidth();
3453
3454 // <char-type>: The "kind" of string literal is encoded into the mangled name.
3455 if (SL->isWide())
3456 Mangler.getStream() << '1';
3457 else
3458 Mangler.getStream() << '0';
3459
3460 // <literal-length>: The next part of the mangled name consists of the length
3461 // of the string in bytes.
3462 Mangler.mangleNumber(StringByteLength);
3463
3464 auto GetLittleEndianByte = [&SL](unsigned Index) {
3465 unsigned CharByteWidth = SL->getCharByteWidth();
3466 if (Index / CharByteWidth >= SL->getLength())
3467 return static_cast<char>(0);
3468 uint32_t CodeUnit = SL->getCodeUnit(Index / CharByteWidth);
3469 unsigned OffsetInCodeUnit = Index % CharByteWidth;
3470 return static_cast<char>((CodeUnit >> (8 * OffsetInCodeUnit)) & 0xff);
3471 };
3472
3473 auto GetBigEndianByte = [&SL](unsigned Index) {
3474 unsigned CharByteWidth = SL->getCharByteWidth();
3475 if (Index / CharByteWidth >= SL->getLength())
3476 return static_cast<char>(0);
3477 uint32_t CodeUnit = SL->getCodeUnit(Index / CharByteWidth);
3478 unsigned OffsetInCodeUnit = (CharByteWidth - 1) - (Index % CharByteWidth);
3479 return static_cast<char>((CodeUnit >> (8 * OffsetInCodeUnit)) & 0xff);
3480 };
3481
3482 // CRC all the bytes of the StringLiteral.
3483 llvm::JamCRC JC;
3484 for (unsigned I = 0, E = StringByteLength; I != E; ++I)
3485 JC.update(GetLittleEndianByte(I));
3486
3487 // <encoded-crc>: The CRC is encoded utilizing the standard number mangling
3488 // scheme.
3489 Mangler.mangleNumber(JC.getCRC());
3490
3491 // <encoded-string>: The mangled name also contains the first 32 bytes
3492 // (including null-terminator bytes) of the encoded StringLiteral.
3493 // Each character is encoded by splitting them into bytes and then encoding
3494 // the constituent bytes.
3495 auto MangleByte = [&Mangler](char Byte) {
3496 // There are five different manglings for characters:
3497 // - [a-zA-Z0-9_$]: A one-to-one mapping.
3498 // - ?[a-z]: The range from \xe1 to \xfa.
3499 // - ?[A-Z]: The range from \xc1 to \xda.
3500 // - ?[0-9]: The set of [,/\:. \n\t'-].
3501 // - ?$XX: A fallback which maps nibbles.
3502 if (isIdentifierBody(Byte, /*AllowDollar=*/true)) {
3503 Mangler.getStream() << Byte;
3504 } else if (isLetter(Byte & 0x7f)) {
3505 Mangler.getStream() << '?' << static_cast<char>(Byte & 0x7f);
3506 } else {
3507 const char SpecialChars[] = {',', '/', '\\', ':', '.',
3508 ' ', '\n', '\t', '\'', '-'};
3509 const char *Pos = llvm::find(SpecialChars, Byte);
3510 if (Pos != std::end(SpecialChars)) {
3511 Mangler.getStream() << '?' << (Pos - std::begin(SpecialChars));
3512 } else {
3513 Mangler.getStream() << "?$";
3514 Mangler.getStream() << static_cast<char>('A' + ((Byte >> 4) & 0xf));
3515 Mangler.getStream() << static_cast<char>('A' + (Byte & 0xf));
3516 }
3517 }
3518 };
3519
3520 // Enforce our 32 bytes max, except wchar_t which gets 32 chars instead.
3521 unsigned MaxBytesToMangle = SL->isWide() ? 64U : 32U;
3522 unsigned NumBytesToMangle = std::min(MaxBytesToMangle, StringByteLength);
3523 for (unsigned I = 0; I != NumBytesToMangle; ++I) {
3524 if (SL->isWide())
3525 MangleByte(GetBigEndianByte(I));
3526 else
3527 MangleByte(GetLittleEndianByte(I));
3528 }
3529
3530 Mangler.getStream() << '@';
3531}
3532
3533MicrosoftMangleContext *
3534MicrosoftMangleContext::create(ASTContext &Context, DiagnosticsEngine &Diags) {
3535 return new MicrosoftMangleContextImpl(Context, Diags);
3536}