From 3e76d34afa479f864427ff6eaf04aac49bd81433 Mon Sep 17 00:00:00 2001 From: Artem Dergachev Date: Mon, 12 Mar 2018 23:12:40 +0000 Subject: [PATCH] [CFG] [analyzer] Add construction context to C++ return-by-value call elements. This patch adds a new CFGStmt sub-class, CFGCXXRecordTypedCall, which replaces the regular CFGStmt for the respective CallExpr whenever the CFG has additional information to provide regarding the lifetime of the returned value. This additional call site information is represented by a ConstructionContext (which was previously used for CFGConstructor elements) that provides references to CXXBindTemporaryExpr and MaterializeTemporaryExpr that surround the call. This corresponds to the common C++ calling convention solution of providing the target address for constructing the return value as an auxiliary implicit argument during function call. One of the use cases for such extra context at the call site would be to perform any sort of inter-procedural analysis over the CFG that involves functions returning objects by value. In this case the elidable constructor at the return site would construct the object explained by the context at the call site, and its lifetime would also be managed by the caller, not the callee. The extra context would also be useful for properly handling the return-value temporary at the call site, even if the callee is not being analyzed inter-procedurally. Differential Revision: https://reviews.llvm.org/D44120 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@327343 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/clang/Analysis/CFG.h | 54 ++++++- lib/Analysis/CFG.cpp | 160 +++++++++++++------- lib/StaticAnalyzer/Core/ExprEngine.cpp | 1 + lib/StaticAnalyzer/Core/PathDiagnostic.cpp | 1 + test/Analysis/cfg-rich-constructors.cpp | 20 +-- test/Analysis/temp-obj-dtors-cfg-output.cpp | 9 +- 6 files changed, 171 insertions(+), 74 deletions(-) diff --git a/include/clang/Analysis/CFG.h b/include/clang/Analysis/CFG.h index 1d6a8d40f4..133d207ca6 100644 --- a/include/clang/Analysis/CFG.h +++ b/include/clang/Analysis/CFG.h @@ -39,6 +39,7 @@ class ASTContext; class BinaryOperator; class CFG; class ConstructionContext; +class TemporaryObjectConstructionContext; class CXXBaseSpecifier; class CXXBindTemporaryExpr; class CXXCtorInitializer; @@ -65,8 +66,9 @@ public: // stmt kind Statement, Constructor, + CXXRecordTypedCall, STMT_BEGIN = Statement, - STMT_END = Constructor, + STMT_END = CXXRecordTypedCall, // dtor kind AutomaticObjectDtor, DeleteDtor, @@ -158,10 +160,6 @@ public: return static_cast(Data2.getPointer()); } - QualType getType() const { - return cast(getStmt())->getType(); - } - private: friend class CFGElement; @@ -172,6 +170,46 @@ private: } }; +/// CFGCXXRecordTypedCall - Represents a function call that returns a C++ object +/// by value. This, like constructor, requires a construction context, which +/// will always be that of a temporary object - usually consumed by an elidable +/// constructor. For such value-typed calls the ReturnedValueConstructionContext +/// of their return value is naturally complemented by the +/// TemporaryObjectConstructionContext at the call site (here). In C such +/// tracking is not necessary because no additional effort is required for +/// destroying the object or modeling copy elision. Like CFGConstructor, this is +/// for now only used by the analyzer's CFG. +class CFGCXXRecordTypedCall : public CFGStmt { +public: + /// Returns true when call expression \p CE needs to be represented + /// by CFGCXXRecordTypedCall, as opposed to a regular CFGStmt. + static bool isCXXRecordTypedCall(CallExpr *CE) { + return CE->getType().getCanonicalType()->getAsCXXRecordDecl(); + } + + explicit CFGCXXRecordTypedCall(CallExpr *CE, + const TemporaryObjectConstructionContext *C) + : CFGStmt(CE, CXXRecordTypedCall) { + assert(isCXXRecordTypedCall(CE)); + assert(C); + Data2.setPointer(const_cast(C)); + } + + const TemporaryObjectConstructionContext *getConstructionContext() const { + return static_cast( + Data2.getPointer()); + } + +private: + friend class CFGElement; + + CFGCXXRecordTypedCall() = default; + + static bool isKind(const CFGElement &E) { + return E.getKind() == CXXRecordTypedCall; + } +}; + /// CFGInitializer - Represents C++ base or member initializer from /// constructor's initialization list. class CFGInitializer : public CFGElement { @@ -840,6 +878,12 @@ public: Elements.push_back(CFGConstructor(CE, CC), C); } + void appendCXXRecordTypedCall(CallExpr *CE, + const TemporaryObjectConstructionContext *CC, + BumpVectorContext &C) { + Elements.push_back(CFGCXXRecordTypedCall(CE, CC), C); + } + void appendInitializer(CXXCtorInitializer *initializer, BumpVectorContext &C) { Elements.push_back(CFGInitializer(initializer), C); diff --git a/lib/Analysis/CFG.cpp b/lib/Analysis/CFG.cpp index 7fec3f7de8..6aab6b6904 100644 --- a/lib/Analysis/CFG.cpp +++ b/lib/Analysis/CFG.cpp @@ -483,8 +483,8 @@ class CFGBuilder { // Information about the currently visited C++ object construction site. // This is set in the construction trigger and read when the constructor - // itself is being visited. - llvm::DenseMap + // or a function that returns an object by value is being visited. + llvm::DenseMap ConstructionContextMap; using DeclsWithEndedScopeSetTy = llvm::SmallSetVector; @@ -673,7 +673,7 @@ private: // Remember to apply the construction context based on the current \p Layer // when constructing the CFG element for \p CE. void consumeConstructionContext(const ConstructionContextLayer *Layer, - CXXConstructExpr *CE); + Expr *E); // Scan \p Child statement to find constructors in it, while keeping in mind // that its parent statement is providing a partial construction context @@ -684,9 +684,9 @@ private: Stmt *Child); // Unset the construction context after consuming it. This is done immediately - // after adding the CFGConstructor element, so there's no need to - // do this manually in every Visit... function. - void cleanupConstructionContext(CXXConstructExpr *CE); + // after adding the CFGConstructor or CFGCXXRecordTypedCall element, so + // there's no need to do this manually in every Visit... function. + void cleanupConstructionContext(Expr *E); void autoCreateBlock() { if (!Block) Block = createBlock(); } CFGBlock *createBlock(bool add_successor = true); @@ -749,6 +749,27 @@ private: B->appendStmt(CE, cfg->getBumpVectorContext()); } + void appendCall(CFGBlock *B, CallExpr *CE) { + if (BuildOpts.AddRichCXXConstructors) { + if (CFGCXXRecordTypedCall::isCXXRecordTypedCall(CE)) { + if (const ConstructionContextLayer *Layer = + ConstructionContextMap.lookup(CE)) { + const ConstructionContext *CC = + ConstructionContext::createFromLayers(cfg->getBumpVectorContext(), + Layer); + B->appendCXXRecordTypedCall( + CE, cast(CC), + cfg->getBumpVectorContext()); + cleanupConstructionContext(CE); + return; + } + } + } + + // No valid construction context found. Fall back to statement. + B->appendStmt(CE, cfg->getBumpVectorContext()); + } + void appendInitializer(CFGBlock *B, CXXCtorInitializer *I) { B->appendInitializer(I, cfg->getBumpVectorContext()); } @@ -1209,16 +1230,16 @@ static const VariableArrayType *FindVA(const Type *t) { } void CFGBuilder::consumeConstructionContext( - const ConstructionContextLayer *Layer, CXXConstructExpr *CE) { + const ConstructionContextLayer *Layer, Expr *E) { if (const ConstructionContextLayer *PreviouslyStoredLayer = - ConstructionContextMap.lookup(CE)) { + ConstructionContextMap.lookup(E)) { (void)PreviouslyStoredLayer; // We might have visited this child when we were finding construction // contexts within its parents. assert(PreviouslyStoredLayer->isStrictlyMoreSpecificThan(Layer) && "Already within a different construction context!"); } else { - ConstructionContextMap[CE] = Layer; + ConstructionContextMap[E] = Layer; } } @@ -1236,6 +1257,18 @@ void CFGBuilder::findConstructionContexts( consumeConstructionContext(Layer, cast(Child)); break; } + // FIXME: This, like the main visit, doesn't support CUDAKernelCallExpr. + // FIXME: An isa<> would look much better but this whole switch is a + // workaround for an internal compiler error in MSVC 2015 (see r326021). + case Stmt::CallExprClass: + case Stmt::CXXMemberCallExprClass: + case Stmt::CXXOperatorCallExprClass: + case Stmt::UserDefinedLiteralClass: { + auto *CE = cast(Child); + if (CFGCXXRecordTypedCall::isCXXRecordTypedCall(CE)) + consumeConstructionContext(Layer, CE); + break; + } case Stmt::ExprWithCleanupsClass: { auto *Cleanups = cast(Child); findConstructionContexts(Layer, Cleanups->getSubExpr()); @@ -1277,12 +1310,12 @@ void CFGBuilder::findConstructionContexts( } } -void CFGBuilder::cleanupConstructionContext(CXXConstructExpr *CE) { +void CFGBuilder::cleanupConstructionContext(Expr *E) { assert(BuildOpts.AddRichCXXConstructors && "We should not be managing construction contexts!"); - assert(ConstructionContextMap.count(CE) && + assert(ConstructionContextMap.count(E) && "Cannot exit construction context without the context!"); - ConstructionContextMap.erase(CE); + ConstructionContextMap.erase(E); } @@ -2360,7 +2393,10 @@ CFGBlock *CFGBuilder::VisitCallExpr(CallExpr *C, AddStmtChoice asc) { } if (!NoReturn && !AddEHEdge) { - return VisitStmt(C, asc.withAlwaysAdd(true)); + autoCreateBlock(); + appendCall(Block, C); + + return VisitChildren(C); } if (Block) { @@ -2374,7 +2410,7 @@ CFGBlock *CFGBuilder::VisitCallExpr(CallExpr *C, AddStmtChoice asc) { else Block = createBlock(); - appendStmt(Block, C); + appendCall(Block, C); if (AddEHEdge) { // Add exceptional edges. @@ -4516,6 +4552,7 @@ CFGImplicitDtor::getDestructorDecl(ASTContext &astContext) const { case CFGElement::LifetimeEnds: case CFGElement::Statement: case CFGElement::Constructor: + case CFGElement::CXXRecordTypedCall: case CFGElement::ScopeBegin: case CFGElement::ScopeEnd: llvm_unreachable("getDestructorDecl should only be used with " @@ -4868,6 +4905,49 @@ static void print_initializer(raw_ostream &OS, StmtPrinterHelper &Helper, OS << " (Member initializer)"; } +static void print_construction_context(raw_ostream &OS, + StmtPrinterHelper &Helper, + const ConstructionContext *CC) { + const Stmt *S1 = nullptr, *S2 = nullptr; + switch (CC->getKind()) { + case ConstructionContext::ConstructorInitializerKind: { + OS << ", "; + const auto *ICC = cast(CC); + print_initializer(OS, Helper, ICC->getCXXCtorInitializer()); + break; + } + case ConstructionContext::SimpleVariableKind: { + const auto *DSCC = cast(CC); + S1 = DSCC->getDeclStmt(); + break; + } + case ConstructionContext::NewAllocatedObjectKind: { + const auto *NECC = cast(CC); + S1 = NECC->getCXXNewExpr(); + break; + } + case ConstructionContext::ReturnedValueKind: { + const auto *RSCC = cast(CC); + S1 = RSCC->getReturnStmt(); + break; + } + case ConstructionContext::TemporaryObjectKind: { + const auto *TOCC = cast(CC); + S1 = TOCC->getCXXBindTemporaryExpr(); + S2 = TOCC->getMaterializedTemporaryExpr(); + break; + } + } + if (S1) { + OS << ", "; + Helper.handledStmt(const_cast(S1), OS); + } + if (S2) { + OS << ", "; + Helper.handledStmt(const_cast(S2), OS); + } +} + static void print_elem(raw_ostream &OS, StmtPrinterHelper &Helper, const CFGElement &E) { if (Optional CS = E.getAs()) { @@ -4897,54 +4977,22 @@ static void print_elem(raw_ostream &OS, StmtPrinterHelper &Helper, } S->printPretty(OS, &Helper, PrintingPolicy(Helper.getLangOpts())); - if (isa(S)) { + if (auto VTC = E.getAs()) { + if (isa(S)) + OS << " (OperatorCall)"; + OS << " (CXXRecordTypedCall"; + print_construction_context(OS, Helper, VTC->getConstructionContext()); + OS << ")"; + } else if (isa(S)) { OS << " (OperatorCall)"; } else if (isa(S)) { OS << " (BindTemporary)"; } else if (const CXXConstructExpr *CCE = dyn_cast(S)) { - OS << " (CXXConstructExpr, "; + OS << " (CXXConstructExpr"; if (Optional CE = E.getAs()) { - const ConstructionContext *CC = CE->getConstructionContext(); - const Stmt *S1 = nullptr, *S2 = nullptr; - switch (CC->getKind()) { - case ConstructionContext::ConstructorInitializerKind: { - const auto *ICC = cast(CC); - print_initializer(OS, Helper, ICC->getCXXCtorInitializer()); - OS << ", "; - break; - } - case ConstructionContext::SimpleVariableKind: { - const auto *DSCC = cast(CC); - S1 = DSCC->getDeclStmt(); - break; - } - case ConstructionContext::NewAllocatedObjectKind: { - const auto *NECC = cast(CC); - S1 = NECC->getCXXNewExpr(); - break; - } - case ConstructionContext::ReturnedValueKind: { - const auto *RSCC = cast(CC); - S1 = RSCC->getReturnStmt(); - break; - } - case ConstructionContext::TemporaryObjectKind: { - const auto *TOCC = cast(CC); - S1 = TOCC->getCXXBindTemporaryExpr(); - S2 = TOCC->getMaterializedTemporaryExpr(); - break; - } - } - if (S1) { - Helper.handledStmt(const_cast(S1), OS); - OS << ", "; - } - if (S2) { - Helper.handledStmt(const_cast(S2), OS); - OS << ", "; - } + print_construction_context(OS, Helper, CE->getConstructionContext()); } - OS << CCE->getType().getAsString() << ")"; + OS << ", " << CCE->getType().getAsString() << ")"; } else if (const CastExpr *CE = dyn_cast(S)) { OS << " (" << CE->getStmtClassName() << ", " << CE->getCastKindName() diff --git a/lib/StaticAnalyzer/Core/ExprEngine.cpp b/lib/StaticAnalyzer/Core/ExprEngine.cpp index bacc99047c..b25c9ac8c4 100644 --- a/lib/StaticAnalyzer/Core/ExprEngine.cpp +++ b/lib/StaticAnalyzer/Core/ExprEngine.cpp @@ -612,6 +612,7 @@ void ExprEngine::processCFGElement(const CFGElement E, ExplodedNode *Pred, switch (E.getKind()) { case CFGElement::Statement: case CFGElement::Constructor: + case CFGElement::CXXRecordTypedCall: ProcessStmt(E.castAs().getStmt(), Pred); return; case CFGElement::Initializer: diff --git a/lib/StaticAnalyzer/Core/PathDiagnostic.cpp b/lib/StaticAnalyzer/Core/PathDiagnostic.cpp index db9fcfac00..fafedbb32b 100644 --- a/lib/StaticAnalyzer/Core/PathDiagnostic.cpp +++ b/lib/StaticAnalyzer/Core/PathDiagnostic.cpp @@ -579,6 +579,7 @@ getLocationForCaller(const StackFrameContext *SFC, switch (Source.getKind()) { case CFGElement::Statement: case CFGElement::Constructor: + case CFGElement::CXXRecordTypedCall: return PathDiagnosticLocation(Source.castAs().getStmt(), SM, CallerCtx); case CFGElement::Initializer: { diff --git a/test/Analysis/cfg-rich-constructors.cpp b/test/Analysis/cfg-rich-constructors.cpp index cad32f842c..c22f96dd42 100644 --- a/test/Analysis/cfg-rich-constructors.cpp +++ b/test/Analysis/cfg-rich-constructors.cpp @@ -97,7 +97,7 @@ void simpleVariableWithOperatorNewInBraces() { // CHECK: void simpleVariableInitializedByValue() // CHECK: 1: C::get // CHECK-NEXT: 2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, class C (*)(void)) -// CHECK-NEXT: 3: [B1.2]() +// CHECK-NEXT: 3: [B1.2]() (CXXRecordTypedCall, [B1.4]) // CHECK-NEXT: 4: [B1.3] // CHECK-NEXT: 5: [B1.4] (CXXConstructExpr, [B1.6], class C) // CHECK-NEXT: 6: C c = C::get(); @@ -114,7 +114,7 @@ void simpleVariableInitializedByValue() { // CHECK: [B2] // CHECK-NEXT: 1: C::get // CHECK-NEXT: 2: [B2.1] (ImplicitCastExpr, FunctionToPointerDecay, class C (*)(void)) -// CHECK-NEXT: 3: [B2.2]() +// CHECK-NEXT: 3: [B2.2]() (CXXRecordTypedCall, [B2.4]) // CHECK-NEXT: 4: [B2.3] // CHECK-NEXT: 5: [B2.4] (CXXConstructExpr, [B1.2], class C) // CHECK: [B3] @@ -172,7 +172,7 @@ void referenceVariableWithInitializer() { // CHECK: [B2] // CHECK-NEXT: 1: C::get // CHECK-NEXT: 2: [B2.1] (ImplicitCastExpr, FunctionToPointerDecay, class C (*)(void)) -// CHECK-NEXT: 3: [B2.2]() +// CHECK-NEXT: 3: [B2.2]() (CXXRecordTypedCall, [B2.4]) // CHECK-NEXT: 4: [B2.3] // CHECK-NEXT: 5: [B2.4] (CXXConstructExpr, [B1.3], class C) // CHECK: [B3] @@ -217,14 +217,14 @@ public: // CHECK: D(double) // CHECK: 1: C::get // CHECK-NEXT: 2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, class C (*)(void)) -// CHECK-NEXT: 3: [B1.2]() +// CHECK-NEXT: 3: [B1.2]() (CXXRecordTypedCall, [B1.4]) // CHECK-NEXT: 4: [B1.3] // CHECK-NEXT: 5: [B1.4] (CXXConstructExpr, C([B1.4]) (Base initializer), class C) // CHECK-NEXT: 6: C([B1.5]) (Base initializer) // CHECK-NEXT: 7: CFGNewAllocator(C *) // CHECK-NEXT: 8: C::get // CHECK-NEXT: 9: [B1.8] (ImplicitCastExpr, FunctionToPointerDecay, class C (*)(void)) -// CHECK-NEXT: 10: [B1.9]() +// CHECK-NEXT: 10: [B1.9]() (CXXRecordTypedCall, [B1.11]) // CHECK-NEXT: 11: [B1.10] // CHECK-NEXT: 12: [B1.11] (CXXConstructExpr, [B1.13], class C) // CHECK-NEXT: 13: new C([B1.12]) @@ -299,7 +299,7 @@ C returnTemporaryWithArgument() { // CHECK: C returnTemporaryConstructedByFunction() // CHECK: 1: C::get // CHECK-NEXT: 2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, class C (*)(void)) -// CHECK-NEXT: 3: [B1.2]() +// CHECK-NEXT: 3: [B1.2]() (CXXRecordTypedCall, [B1.4]) // CHECK-NEXT: 4: [B1.3] // CHECK-NEXT: 5: [B1.4] (CXXConstructExpr, [B1.6], class C) // CHECK-NEXT: 6: return [B1.5]; @@ -310,7 +310,7 @@ C returnTemporaryConstructedByFunction() { // CHECK: C returnChainOfCopies() // CHECK: 1: C::get // CHECK-NEXT: 2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, class C (*)(void)) -// CHECK-NEXT: 3: [B1.2]() +// CHECK-NEXT: 3: [B1.2]() (CXXRecordTypedCall, [B1.4]) // CHECK-NEXT: 4: [B1.3] // CHECK-NEXT: 5: [B1.4] (CXXConstructExpr, [B1.7], class C) // CHECK-NEXT: 6: C([B1.5]) (CXXFunctionalCastExpr, ConstructorConversion, class C) @@ -435,7 +435,7 @@ void referenceVariableWithInitializer() { // CHECK: [B5] // CHECK-NEXT: 1: D::get // CHECK-NEXT: 2: [B5.1] (ImplicitCastExpr, FunctionToPointerDecay, class temporary_object_expr_with_dtors::D (*)(void)) -// CHECK-NEXT: 3: [B5.2]() +// CHECK-NEXT: 3: [B5.2]() (CXXRecordTypedCall, [B5.4], [B5.6]) // CHECK-NEXT: 4: [B5.3] (BindTemporary) // CHECK-NEXT: 5: [B5.4] (ImplicitCastExpr, NoOp, const class temporary_object_expr_with_dtors::D) // CHECK-NEXT: 6: [B5.5] @@ -518,7 +518,7 @@ void implicitConstructionConversionFromTemporary() { // CHECK: void implicitConstructionConversionFromFunctionValue() // CHECK: 1: get // CHECK-NEXT: 2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, class implicit_constructor_conversion::A (*)(void)) -// CHECK-NEXT: 3: [B1.2]() +// CHECK-NEXT: 3: [B1.2]() (CXXRecordTypedCall, [B1.5]) // CHECK-NEXT: 4: [B1.3] (ImplicitCastExpr, NoOp, const class implicit_constructor_conversion::A) // CHECK-NEXT: 5: [B1.4] // CHECK-NEXT: 6: [B1.5] (CXXConstructExpr, [B1.8], [B1.10], class implicit_constructor_conversion::B) @@ -552,7 +552,7 @@ void implicitConstructionConversionFromTemporaryWithLifetimeExtension() { // CHECK: void implicitConstructionConversionFromFunctionValueWithLifetimeExtension() // CHECK: 1: get // CHECK-NEXT: 2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, class implicit_constructor_conver -// CHECK-NEXT: 3: [B1.2]() +// CHECK-NEXT: 3: [B1.2]() (CXXRecordTypedCall, [B1.5]) // CHECK-NEXT: 4: [B1.3] (ImplicitCastExpr, NoOp, const class implicit_constructor_conversion::A) // CHECK-NEXT: 5: [B1.4] // CHECK-NEXT: 6: [B1.5] (CXXConstructExpr, [B1.9], class implicit_constructor_conversion::B) diff --git a/test/Analysis/temp-obj-dtors-cfg-output.cpp b/test/Analysis/temp-obj-dtors-cfg-output.cpp index d17c5beff4..eecbabe5a1 100644 --- a/test/Analysis/temp-obj-dtors-cfg-output.cpp +++ b/test/Analysis/temp-obj-dtors-cfg-output.cpp @@ -1111,7 +1111,8 @@ int testConsistencyNestedNormalReturn(bool value) { // CHECK: [B1] // CHECK: 1: A::make // CHECK: 2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, class A (*)(void)) -// CHECK: 3: [B1.2]() +// WARNINGS: 3: [B1.2]() +// ANALYZER: 3: [B1.2]() (CXXRecordTypedCall, [B1.4], [B1.6]) // CHECK: 4: [B1.3] (BindTemporary) // CHECK: 5: [B1.4] (ImplicitCastExpr, NoOp, const class A) // CHECK: 6: [B1.5] @@ -1130,7 +1131,8 @@ int testConsistencyNestedNormalReturn(bool value) { // CHECK: [B1] // CHECK: 1: A::make // CHECK: 2: [B1.1] (ImplicitCastExpr, FunctionToPointerDecay, class A (*)(void)) -// CHECK: 3: [B1.2]() +// WARNINGS: 3: [B1.2]() +// ANALYZER: 3: [B1.2]() (CXXRecordTypedCall, [B1.4], [B1.6]) // CHECK: 4: [B1.3] (BindTemporary) // CHECK: 5: [B1.4] (ImplicitCastExpr, NoOp, const class A) // CHECK: 6: [B1.5] @@ -1139,7 +1141,8 @@ int testConsistencyNestedNormalReturn(bool value) { // CHECK: 9: [B1.8] (ImplicitCastExpr, FunctionToPointerDecay, void (*)(const class A &)) // CHECK: 10: A::make // CHECK: 11: [B1.10] (ImplicitCastExpr, FunctionToPointerDecay, class A (*)(void)) -// CHECK: 12: [B1.11]() +// WARNINGS: 12: [B1.11]() +// ANALYZER: 12: [B1.11]() (CXXRecordTypedCall, [B1.13], [B1.15]) // CHECK: 13: [B1.12] (BindTemporary) // CHECK: 14: [B1.13] (ImplicitCastExpr, NoOp, const class A) // CHECK: 15: [B1.14] -- 2.40.0