const FunctionDecl *Defn = nullptr;
if (!getContext().getLangOpts().Modules || !FD->hasBody(Defn)) {
FD->setLazyBody(PB->second);
- } else {
- auto *NonConstDefn = const_cast<FunctionDecl*>(Defn);
- mergeDefinitionVisibility(NonConstDefn, FD);
-
- if (!FD->isLateTemplateParsed() &&
- !NonConstDefn->isLateTemplateParsed() &&
- FD->getODRHash() != NonConstDefn->getODRHash()) {
- PendingFunctionOdrMergeFailures[FD].push_back(NonConstDefn);
- }
- }
+ } else
+ mergeDefinitionVisibility(const_cast<FunctionDecl*>(Defn), FD);
continue;
}
}
void ASTReader::diagnoseOdrViolations() {
- if (PendingOdrMergeFailures.empty() && PendingOdrMergeChecks.empty() &&
- PendingFunctionOdrMergeFailures.empty())
+ if (PendingOdrMergeFailures.empty() && PendingOdrMergeChecks.empty())
return;
// Trigger the import of the full definition of each class that had any
}
}
- // Trigger the import of functions.
- auto FunctionOdrMergeFailures = std::move(PendingFunctionOdrMergeFailures);
- PendingFunctionOdrMergeFailures.clear();
- for (auto &Merge : FunctionOdrMergeFailures) {
- Merge.first->buildLookup();
- Merge.first->decls_begin();
- Merge.first->getBody();
- for (auto &FD : Merge.second) {
- FD->buildLookup();
- FD->decls_begin();
- FD->getBody();
- }
- }
-
// For each declaration from a merged context, check that the canonical
// definition of that context also contains a declaration of the same
// entity.
}
}
- if (OdrMergeFailures.empty() && FunctionOdrMergeFailures.empty())
+ if (OdrMergeFailures.empty())
return;
// Ensure we don't accidentally recursively enter deserialization while
// we're producing our diagnostics.
Deserializing RecursionGuard(this);
- // Common code for hashing helpers.
- ODRHash Hash;
- auto ComputeQualTypeODRHash = [&Hash](QualType Ty) {
- Hash.clear();
- Hash.AddQualType(Ty);
- return Hash.CalculateHash();
- };
-
- auto ComputeODRHash = [&Hash](const Stmt *S) {
- assert(S);
- Hash.clear();
- Hash.AddStmt(S);
- return Hash.CalculateHash();
- };
-
- auto ComputeSubDeclODRHash = [&Hash](const Decl *D) {
- assert(D);
- Hash.clear();
- Hash.AddSubDecl(D);
- return Hash.CalculateHash();
- };
-
// Issue any pending ODR-failure diagnostics.
for (auto &Merge : OdrMergeFailures) {
// If we've already pointed out a specific problem with this class, don't
<< SecondModule << Range << DiffType;
};
+ ODRHash Hash;
+ auto ComputeQualTypeODRHash = [&Hash](QualType Ty) {
+ Hash.clear();
+ Hash.AddQualType(Ty);
+ return Hash.CalculateHash();
+ };
+
unsigned FirstNumBases = FirstDD->NumBases;
unsigned FirstNumVBases = FirstDD->NumVBases;
unsigned SecondNumBases = SecondDD->NumBases;
if (FirstTemplate && SecondTemplate) {
DeclHashes FirstTemplateHashes;
DeclHashes SecondTemplateHashes;
+ ODRHash Hash;
auto PopulateTemplateParameterHashs =
- [&ComputeSubDeclODRHash](DeclHashes &Hashes,
- const ClassTemplateDecl *TD) {
+ [&Hash](DeclHashes &Hashes, const ClassTemplateDecl *TD) {
for (auto *D : TD->getTemplateParameters()->asArray()) {
- Hashes.emplace_back(D, ComputeSubDeclODRHash(D));
+ Hash.clear();
+ Hash.AddSubDecl(D);
+ Hashes.emplace_back(D, Hash.CalculateHash());
}
};
DeclHashes FirstHashes;
DeclHashes SecondHashes;
+ ODRHash Hash;
- auto PopulateHashes = [&ComputeSubDeclODRHash, FirstRecord](
- DeclHashes &Hashes, CXXRecordDecl *Record) {
+ auto PopulateHashes = [&Hash, FirstRecord](DeclHashes &Hashes,
+ CXXRecordDecl *Record) {
for (auto *D : Record->decls()) {
// Due to decl merging, the first CXXRecordDecl is the parent of
// Decls in both records.
if (!ODRHash::isWhitelistedDecl(D, FirstRecord))
continue;
- Hashes.emplace_back(D, ComputeSubDeclODRHash(D));
+ Hash.clear();
+ Hash.AddSubDecl(D);
+ Hashes.emplace_back(D, Hash.CalculateHash());
}
};
PopulateHashes(FirstHashes, FirstRecord);
<< SecondModule << Range << DiffType;
};
+ auto ComputeODRHash = [&Hash](const Stmt* S) {
+ assert(S);
+ Hash.clear();
+ Hash.AddStmt(S);
+ return Hash.CalculateHash();
+ };
+
+ auto ComputeQualTypeODRHash = [&Hash](QualType Ty) {
+ Hash.clear();
+ Hash.AddQualType(Ty);
+ return Hash.CalculateHash();
+ };
+
switch (FirstDiffType) {
case Other:
case EndOfClass:
<< Merge.first;
}
}
-
- // Issue ODR failures diagnostics for functions.
- for (auto &Merge : FunctionOdrMergeFailures) {
- enum ODRFunctionDifference {
- ReturnType,
- ParameterName,
- ParameterType,
- ParameterSingleDefaultArgument,
- ParameterDifferentDefaultArgument,
- FunctionBody,
- };
-
- FunctionDecl *FirstFunction = Merge.first;
- std::string FirstModule = getOwningModuleNameForDiagnostic(FirstFunction);
-
- bool Diagnosed = false;
- for (auto &SecondFunction : Merge.second) {
-
- if (FirstFunction == SecondFunction)
- continue;
-
- std::string SecondModule =
- getOwningModuleNameForDiagnostic(SecondFunction);
-
- auto ODRDiagError = [FirstFunction, &FirstModule,
- this](SourceLocation Loc, SourceRange Range,
- ODRFunctionDifference DiffType) {
- return Diag(Loc, diag::err_module_odr_violation_function)
- << FirstFunction << FirstModule.empty() << FirstModule << Range
- << DiffType;
- };
- auto ODRDiagNote = [&SecondModule, this](SourceLocation Loc,
- SourceRange Range,
- ODRFunctionDifference DiffType) {
- return Diag(Loc, diag::note_module_odr_violation_function)
- << SecondModule << Range << DiffType;
- };
-
- if (ComputeQualTypeODRHash(FirstFunction->getReturnType()) !=
- ComputeQualTypeODRHash(SecondFunction->getReturnType())) {
- ODRDiagError(FirstFunction->getReturnTypeSourceRange().getBegin(),
- FirstFunction->getReturnTypeSourceRange(), ReturnType)
- << FirstFunction->getReturnType();
- ODRDiagNote(SecondFunction->getReturnTypeSourceRange().getBegin(),
- SecondFunction->getReturnTypeSourceRange(), ReturnType)
- << SecondFunction->getReturnType();
- Diagnosed = true;
- break;
- }
-
- assert(FirstFunction->param_size() == SecondFunction->param_size() &&
- "Merged functions with different number of parameters");
-
- auto ParamSize = FirstFunction->param_size();
- bool ParameterMismatch = false;
- for (unsigned I = 0; I < ParamSize; ++I) {
- auto *FirstParam = FirstFunction->getParamDecl(I);
- auto *SecondParam = SecondFunction->getParamDecl(I);
-
- assert(getContext().hasSameType(FirstParam->getType(),
- SecondParam->getType()) &&
- "Merged function has different parameter types.");
-
- if (FirstParam->getDeclName() != SecondParam->getDeclName()) {
- ODRDiagError(FirstParam->getLocation(), FirstParam->getSourceRange(),
- ParameterName)
- << I + 1 << FirstParam->getDeclName();
- ODRDiagNote(SecondParam->getLocation(), SecondParam->getSourceRange(),
- ParameterName)
- << I + 1 << SecondParam->getDeclName();
- ParameterMismatch = true;
- break;
- };
-
- QualType FirstParamType = FirstParam->getType();
- QualType SecondParamType = SecondParam->getType();
- if (FirstParamType != SecondParamType &&
- ComputeQualTypeODRHash(FirstParamType) !=
- ComputeQualTypeODRHash(SecondParamType)) {
- if (const DecayedType *ParamDecayedType =
- FirstParamType->getAs<DecayedType>()) {
- ODRDiagError(FirstParam->getLocation(),
- FirstParam->getSourceRange(), ParameterType)
- << (I + 1) << FirstParamType << true
- << ParamDecayedType->getOriginalType();
- } else {
- ODRDiagError(FirstParam->getLocation(),
- FirstParam->getSourceRange(), ParameterType)
- << (I + 1) << FirstParamType << false;
- }
-
- if (const DecayedType *ParamDecayedType =
- SecondParamType->getAs<DecayedType>()) {
- ODRDiagNote(SecondParam->getLocation(),
- SecondParam->getSourceRange(), ParameterType)
- << (I + 1) << SecondParamType << true
- << ParamDecayedType->getOriginalType();
- } else {
- ODRDiagNote(SecondParam->getLocation(),
- SecondParam->getSourceRange(), ParameterType)
- << (I + 1) << SecondParamType << false;
- }
- ParameterMismatch = true;
- break;
- }
-
- const Expr *FirstInit = FirstParam->getInit();
- const Expr *SecondInit = SecondParam->getInit();
- if ((FirstInit == nullptr) != (SecondInit == nullptr)) {
- ODRDiagError(FirstParam->getLocation(), FirstParam->getSourceRange(),
- ParameterSingleDefaultArgument)
- << (I + 1) << (FirstInit == nullptr)
- << (FirstInit ? FirstInit->getSourceRange() : SourceRange());
- ODRDiagNote(SecondParam->getLocation(), SecondParam->getSourceRange(),
- ParameterSingleDefaultArgument)
- << (I + 1) << (SecondInit == nullptr)
- << (SecondInit ? SecondInit->getSourceRange() : SourceRange());
- ParameterMismatch = true;
- break;
- }
-
- if (FirstInit && SecondInit &&
- ComputeODRHash(FirstInit) != ComputeODRHash(SecondInit)) {
- ODRDiagError(FirstParam->getLocation(), FirstParam->getSourceRange(),
- ParameterDifferentDefaultArgument)
- << (I + 1) << FirstInit->getSourceRange();
- ODRDiagNote(SecondParam->getLocation(), SecondParam->getSourceRange(),
- ParameterDifferentDefaultArgument)
- << (I + 1) << SecondInit->getSourceRange();
- ParameterMismatch = true;
- break;
- }
-
- assert(ComputeSubDeclODRHash(FirstParam) ==
- ComputeSubDeclODRHash(SecondParam) &&
- "Undiagnosed parameter difference.");
- }
-
- if (ParameterMismatch) {
- Diagnosed = true;
- break;
- }
-
- // If no error has been generated before now, assume the problem is in
- // the body and generate a message.
- ODRDiagError(FirstFunction->getLocation(),
- FirstFunction->getSourceRange(), FunctionBody);
- ODRDiagNote(SecondFunction->getLocation(),
- SecondFunction->getSourceRange(), FunctionBody);
- Diagnosed = true;
- break;
- }
- assert(Diagnosed && "Unable to emit ODR diagnostic.");
- }
}
void ASTReader::StartedDeserializing() {
#if defined(FIRST)
struct S11 {
- void A(int x);
+ void A(int x) {}
};
#elif defined(SECOND)
struct S11 {
- void A(int y);
+ void A(int y) {}
};
#else
S11 s11;
#if defined(FIRST)
struct S12 {
- void A(int x);
+ void A(int x) {}
};
#elif defined(SECOND)
struct S12 {
- void A(int x = 1);
+ void A(int x = 1) {}
};
#else
S12 s12;
#if defined(FIRST)
struct S13 {
- void A(int x = 1 + 0);
+ void A(int x = 1 + 0) {}
};
#elif defined(SECOND)
struct S13 {
- void A(int x = 1);
+ void A(int x = 1) {}
};
#else
S13 s13;
#if defined(FIRST)
struct S14 {
- void A(int x[2]);
+ void A(int x[2]) {}
};
#elif defined(SECOND)
struct S14 {
- void A(int x[3]);
+ void A(int x[3]) {}
};
#else
S14 s14;
template <typename T>
struct S {
struct R {
- void foo(T x = 0);
+ void foo(T x = 0) {}
};
};
#elif defined(SECOND)
template <typename T>
struct S {
struct R {
- void foo(T x = 1);
+ void foo(T x = 1) {}
};
};
#else
#if defined(FIRST)
template <typename alpha> struct Bravo {
- void charlie(bool delta = false);
+ void charlie(bool delta = false) {}
};
typedef Bravo<char> echo;
echo foxtrot;
#elif defined(SECOND)
template <typename alpha> struct Bravo {
- void charlie(bool delta = (false));
+ void charlie(bool delta = (false)) {}
};
typedef Bravo<char> echo;
echo foxtrot;
#endif
} // namespace DefaultArguments
-namespace FunctionDecl {
-#if defined(FIRST)
-struct S1 {};
-S1 s1a;
-#elif defined(SECOND)
-struct S1 {};
-#else
-S1 s1;
-#endif
-
-#if defined(FIRST)
-struct S2 {
- S2() = default;
-};
-S2 s2a = S2();
-#elif defined(SECOND)
-struct S2 {
- S2() = default;
-};
-#else
-S2 s2;
-#endif
-
-#if defined(FIRST)
-struct S3 {
- S3() = delete;
-};
-S3* s3c;
-#elif defined(SECOND)
-struct S3 {
- S3() = delete;
-};
-#else
-S3* s3;
-#endif
-
-#if defined(FIRST) || defined(SECOND)
-int F1(int x, float y = 2.7) { return 1; }
-#else
-int I1 = F1(1);
-#endif
-
-#if defined(FIRST)
-int F2() { return 1; }
-#elif defined(SECOND)
-double F2() { return 1; }
-#else
-int I2 = F2();
-// expected-error@-1 {{call to 'F2' is ambiguous}}
-// expected-note@first.h:* {{candidate function}}
-// expected-note@second.h:* {{candidate function}}
-#endif
-
-#if defined(FIRST)
-int F3(float) { return 1; }
-#elif defined(SECOND)
-int F3(double) { return 1; }
-#else
-int I3 = F3(1);
-// expected-error@-1 {{call to 'F3' is ambiguous}}
-// expected-note@first.h:* {{candidate function}}
-// expected-note@second.h:* {{candidate function}}
-#endif
-
-#if defined(FIRST)
-int F4(int x) { return 1; }
-#elif defined(SECOND)
-int F4(int y) { return 1; }
-#else
-int I4 = F4(1);
-// expected-error@second.h:* {{'FunctionDecl::F4' has different definitions in different modules; definition in module 'SecondModule' first difference is 1st parameter with name 'y'}}
-// expected-note@first.h:* {{but in 'FirstModule' found 1st parameter with name 'x'}}
-#endif
-
-#if defined(FIRST)
-int F5(int x) { return 1; }
-#elif defined(SECOND)
-int F5(int x = 1) { return 1; }
-#else
-int I5 = F6(1);
-// expected-error@second.h:* {{'FunctionDecl::F5' has different definitions in different modules; definition in module 'SecondModule' first difference is 1st parameter without a default argument}}
-// expected-note@first.h:* {{but in 'FirstModule' found 1st parameter with a default argument}}
-#endif
-
-#if defined(FIRST)
-int F6(int x = 2) { return 1; }
-#elif defined(SECOND)
-int F6(int x = 1) { return 1; }
-#else
-int I6 = F6(1);
-// expected-error@second.h:* {{'FunctionDecl::F6' has different definitions in different modules; definition in module 'SecondModule' first difference is 1st parameter with a default argument}}
-// expected-note@first.h:* {{but in 'FirstModule' found 1st parameter with a different default argument}}
-#endif
-
-using I = int;
-#if defined(FIRST)
-I F7() { return 0; }
-#elif defined(SECOND)
-int F7() { return 0; }
-#else
-int I7 = F7();
-// expected-error@second.h:* {{'FunctionDecl::F7' has different definitions in different modules; definition in module 'SecondModule' first difference is return type is 'int'}}
-// expected-note@first.h:* {{but in 'FirstModule' found different return type 'FunctionDecl::I' (aka 'int')}}
-#endif
-
-#if defined(FIRST)
-int F8(int) { return 0; }
-#elif defined(SECOND)
-int F8(I) { return 0; }
-#else
-int I8 = F8(1);
-// expected-error@second.h:* {{'FunctionDecl::F8' has different definitions in different modules; definition in module 'SecondModule' first difference is 1st parameter with type 'FunctionDecl::I' (aka 'int')}}
-// expected-note@first.h:* {{but in 'FirstModule' found 1st parameter with type 'int'}}
-#endif
-
-#if defined(FIRST)
-int F9(int[1]) { return 0; }
-#elif defined(SECOND)
-int F9(int[2]) { return 0; }
-#else
-int I9 = F9(nullptr);
-// expected-error@second.h:* {{'FunctionDecl::F9' has different definitions in different modules; definition in module 'SecondModule' first difference is 1st parameter with type 'int *' decayed from 'int [2]'}}
-// expected-note@first.h:* {{but in 'FirstModule' found 1st parameter with type 'int *' decayed from 'int [1]'}}
-#endif
-
-#if defined(FIRST)
-int F10() { return 1; }
-#elif defined(SECOND)
-int F10() { return 2; }
-#else
-int I10 = F10();
-#endif
-// expected-error@second.h:* {{'FunctionDecl::F10' has different definitions in different modules; definition in module 'SecondModule' first difference is function body}}
-// expected-note@first.h:* {{but in 'FirstModule' found a different body}}
-} // namespace FunctionDecl
-
// Keep macros contained to one file.
#ifdef FIRST
#undef FIRST
projects / clang / commitdiff