39bc0529b0
This commit converts MallocChecker to the new checker family framework that was introduced in the recent commit 6833076a5d9f5719539a24e900037da5a3979289 -- and gets rid of some awkward unintended interactions between the checker frontends.
78 lines
2.9 KiB
C++
78 lines
2.9 KiB
C++
//===--------------------------------------------------------------*- C++ -*--//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "clang/StaticAnalyzer/Core/BugReporter/BugReporterVisitors.h"
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#include "clang/StaticAnalyzer/Core/Checker.h"
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#include "clang/StaticAnalyzer/Core/PathSensitive/ProgramState_Fwd.h"
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namespace clang {
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namespace ento {
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class NoOwnershipChangeVisitor : public NoStateChangeFuncVisitor {
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protected:
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// The symbol whose (lack of) ownership change we are interested in.
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SymbolRef Sym;
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const CheckerBackend &Checker;
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LLVM_DUMP_METHOD static std::string
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getFunctionName(const ExplodedNode *CallEnterN);
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/// Heuristically guess whether the callee intended to free the resource. This
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/// is done syntactically, because we are trying to argue about alternative
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/// paths of execution, and as a consequence we don't have path-sensitive
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/// information.
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virtual bool doesFnIntendToHandleOwnership(const Decl *Callee,
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ASTContext &ACtx) = 0;
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virtual bool hasResourceStateChanged(ProgramStateRef CallEnterState,
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ProgramStateRef CallExitEndState) = 0;
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bool wasModifiedInFunction(const ExplodedNode *CallEnterN,
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const ExplodedNode *CallExitEndN) final;
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virtual PathDiagnosticPieceRef emitNote(const ExplodedNode *N) = 0;
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PathDiagnosticPieceRef maybeEmitNoteForObjCSelf(PathSensitiveBugReport &R,
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const ObjCMethodCall &Call,
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const ExplodedNode *N) final {
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// TODO: Implement.
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return nullptr;
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}
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PathDiagnosticPieceRef maybeEmitNoteForCXXThis(PathSensitiveBugReport &R,
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const CXXConstructorCall &Call,
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const ExplodedNode *N) final {
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// TODO: Implement.
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return nullptr;
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}
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// Set this to final, effectively dispatch to emitNote.
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PathDiagnosticPieceRef
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maybeEmitNoteForParameters(PathSensitiveBugReport &R, const CallEvent &Call,
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const ExplodedNode *N) final;
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public:
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using OwnerSet = llvm::SmallPtrSet<const MemRegion *, 8>;
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private:
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OwnerSet getOwnersAtNode(const ExplodedNode *N);
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public:
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NoOwnershipChangeVisitor(SymbolRef Sym, const CheckerBackend *Checker)
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: NoStateChangeFuncVisitor(bugreporter::TrackingKind::Thorough), Sym(Sym),
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Checker(*Checker) {}
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void Profile(llvm::FoldingSetNodeID &ID) const override {
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static int Tag = 0;
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ID.AddPointer(&Tag);
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ID.AddPointer(Sym);
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}
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};
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} // namespace ento
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} // namespace clang
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