llvm/clang/lib/StaticAnalyzer/Checkers/CXXSelfAssignmentChecker.cpp

//=== CXXSelfAssignmentChecker.cpp -----------------------------*- C++ -*--===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines CXXSelfAssignmentChecker, which tests all custom defined
// copy and move assignment operators for the case of self assignment, thus
// where the parameter refers to the same location where the this pointer
// points to. The checker itself does not do any checks at all, but it
// causes the analyzer to check every copy and move assignment operator twice:
// once for when 'this' aliases with the parameter and once for when it may not.
// It is the task of the other enabled checkers to find the bugs in these two
// different cases.
//
//===----------------------------------------------------------------------===//

#include "clang/StaticAnalyzer/Checkers/BuiltinCheckerRegistration.h"
#include "clang/StaticAnalyzer/Core/Checker.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h"

usingnamespaceclang;
usingnamespaceento;

namespace {

class CXXSelfAssignmentChecker : public Checker<check::BeginFunction> { … };
}

CXXSelfAssignmentChecker::CXXSelfAssignmentChecker() { … }

void CXXSelfAssignmentChecker::checkBeginFunction(CheckerContext &C) const { … }

void ento::registerCXXSelfAssignmentChecker(CheckerManager &Mgr) { … }

bool ento::shouldRegisterCXXSelfAssignmentChecker(const CheckerManager &mgr) { … }