mirror of
https://github.com/eclipse-cdt/cdt
synced 2025-09-10 12:03:16 +02:00
Bug 545956 - Added checker for virtual methods in ctor/dtor
Change-Id: I63b8a40447e9a5b6080e046030677a13607c4ea3 Signed-off-by: Marco Stornelli <marco.stornelli@gmail.com>
This commit is contained in:
Marco Stornelli
parent
1065ee7688
commit
1204bf21b1
5 changed files with 477 additions and 0 deletions
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@ -163,3 +163,8 @@ problem.description.MissCaseProblem = This rule will flag switch statements with
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problem.name.MissDefaultProblem = Missing default in switch
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problem.messagePattern.MissDefaultProblem = When default case is missing the switch is not complete for all values
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problem.description.MissDefaultProblem = This rule will flag switch statements without a default case
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checker.name.VirtualMethodCallChecker = Virtual method call checker
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problem.name.VirtualMethodCallProblem = Virtual method call in constructor/destructor
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problem.messagePattern.VirtualMethodCallProblem = Calling a virtual method in constructor or destructor can cause crashes and unexpected behavior
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problem.description.VirtualMethodCallProblem = This rule will flag constructor and destructor with virtual method calls
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@ -524,5 +524,20 @@
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name="%problem.name.MissDefaultProblem">
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</problem>
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</checker>
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<checker
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class="org.eclipse.cdt.codan.internal.checkers.VirtualMethodCallChecker"
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id="org.eclipse.cdt.codan.internal.checkers.VirtualMethodCallChecker"
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name="%checker.name.VirtualMethodCallChecker">
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<problem
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category="org.eclipse.cdt.codan.core.categories.ProgrammingProblems"
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defaultEnabled="false"
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defaultSeverity="Error"
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description="%problem.description.VirtualMethodCallProblem"
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id="org.eclipse.cdt.codan.internal.checkers.VirtualMethodCallProblem"
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markerType="org.eclipse.cdt.codan.core.codanProblem"
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messagePattern="%problem.messagePattern.VirtualMethodCallProblem"
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name="%problem.name.VirtualMethodCallProblem">
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</problem>
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</checker>
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</extension>
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</plugin>
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@ -0,0 +1,207 @@
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/*******************************************************************************
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* Copyright (c) 2019 Marco Stornelli
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*
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* This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License 2.0
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* which accompanies this distribution, and is available at
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* https://www.eclipse.org/legal/epl-2.0/
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*
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* SPDX-License-Identifier: EPL-2.0
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*
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*******************************************************************************/
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package org.eclipse.cdt.codan.internal.checkers;
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import java.util.Stack;
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import org.eclipse.cdt.codan.core.cxx.model.AbstractIndexAstChecker;
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import org.eclipse.cdt.core.dom.ast.ASTVisitor;
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import org.eclipse.cdt.core.dom.ast.IASTDeclSpecifier;
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import org.eclipse.cdt.core.dom.ast.IASTDeclaration;
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import org.eclipse.cdt.core.dom.ast.IASTExpression;
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import org.eclipse.cdt.core.dom.ast.IASTFieldReference;
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import org.eclipse.cdt.core.dom.ast.IASTFunctionCallExpression;
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import org.eclipse.cdt.core.dom.ast.IASTIdExpression;
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import org.eclipse.cdt.core.dom.ast.IASTLiteralExpression;
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import org.eclipse.cdt.core.dom.ast.IASTName;
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import org.eclipse.cdt.core.dom.ast.IASTNode;
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import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
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import org.eclipse.cdt.core.dom.ast.IASTUnaryExpression;
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import org.eclipse.cdt.core.dom.ast.IBinding;
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import org.eclipse.cdt.core.dom.ast.ICompositeType;
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import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTCompositeTypeSpecifier;
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import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTConstructorChainInitializer;
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import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTFunctionDefinition;
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import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTUnaryExpression;
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import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassType;
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import org.eclipse.cdt.core.dom.ast.cpp.ICPPConstructor;
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import org.eclipse.cdt.core.dom.ast.cpp.ICPPMethod;
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import org.eclipse.cdt.core.dom.ast.cpp.SemanticQueries;
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import org.eclipse.cdt.internal.core.dom.parser.cpp.ClassTypeHelper;
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import org.eclipse.cdt.internal.core.dom.parser.cpp.ICPPDeferredClassInstance;
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@SuppressWarnings("restriction")
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public class VirtualMethodCallChecker extends AbstractIndexAstChecker {
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public static final String VIRTUAL_CALL_ID = "org.eclipse.cdt.codan.internal.checkers.VirtualMethodCallProblem"; //$NON-NLS-1$
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@Override
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public void processAst(IASTTranslationUnit ast) {
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ast.accept(new OnEachClass());
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}
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class OnEachClass extends ASTVisitor {
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// NOTE: Classes can be nested and even can be declared in constructors of the other classes
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private final Stack<Boolean> ctorDtorStack = new Stack<>();
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OnEachClass() {
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shouldVisitDeclarations = true;
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shouldVisitExpressions = true;
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shouldVisitDeclSpecifiers = true;
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}
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@Override
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public int visit(IASTDeclSpecifier declSpec) {
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if (declSpec instanceof ICPPASTCompositeTypeSpecifier && !ctorDtorStack.isEmpty()) {
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ctorDtorStack.push(false);
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}
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return PROCESS_CONTINUE;
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}
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@Override
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public int leave(IASTDeclSpecifier declSpec) {
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if (declSpec instanceof ICPPASTCompositeTypeSpecifier && !ctorDtorStack.isEmpty()) {
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ctorDtorStack.pop();
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}
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return PROCESS_CONTINUE;
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}
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@Override
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public int visit(IASTDeclaration declaration) {
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ICPPConstructor constructor = getConstructor(declaration);
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if (constructor != null) {
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ctorDtorStack.push(true);
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} else {
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ICPPMethod destructor = getDestructor(declaration);
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if (destructor != null) {
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ctorDtorStack.push(true);
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}
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}
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return PROCESS_CONTINUE;
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}
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@Override
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public int leave(IASTDeclaration declaration) {
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if (getConstructor(declaration) != null || getDestructor(declaration) != null) {
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ctorDtorStack.pop();
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}
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return PROCESS_CONTINUE;
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}
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@Override
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public int visit(IASTExpression expression) {
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if (!ctorDtorStack.empty() && ctorDtorStack.peek()) {
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if (expression instanceof IASTFunctionCallExpression) {
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IASTFunctionCallExpression fCall = (IASTFunctionCallExpression) expression;
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IASTExpression fNameExp = fCall.getFunctionNameExpression();
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IBinding fBinding = null;
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IASTNode problemNode = expression;
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if (fNameExp instanceof IASTIdExpression) {
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IASTIdExpression fName = (IASTIdExpression) fNameExp;
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fBinding = fName.getName().resolveBinding();
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} else if (fNameExp instanceof IASTFieldReference) {
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IASTFieldReference fName = (IASTFieldReference) fNameExp;
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problemNode = fName.getFieldName();
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if (referencesThis(fName.getFieldOwner()))
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fBinding = fName.getFieldName().resolveBinding();
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}
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if (fBinding instanceof ICPPMethod) {
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ICPPMethod method = (ICPPMethod) fBinding;
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if (method.isPureVirtual() || ClassTypeHelper.isVirtual(method)) {
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reportProblem(VIRTUAL_CALL_ID, problemNode);
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}
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}
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}
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}
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return PROCESS_CONTINUE;
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}
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/**
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* Checks that specified declaration is a class constructor
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* (it is a class member and its name is equal to the class name)
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*/
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private ICPPConstructor getConstructor(IASTDeclaration decl) {
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if (decl instanceof ICPPASTFunctionDefinition) {
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ICPPASTFunctionDefinition functionDefinition = (ICPPASTFunctionDefinition) decl;
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if (functionDefinition.isDeleted())
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return null;
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IBinding binding = functionDefinition.getDeclarator().getName().resolveBinding();
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if (binding instanceof ICPPConstructor) {
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ICPPConstructor constructor = (ICPPConstructor) binding;
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// Skip defaulted copy and move constructors.
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if (functionDefinition.isDefaulted() && SemanticQueries.isCopyOrMoveConstructor(constructor))
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return null;
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if (constructor.getClassOwner().getKey() == ICompositeType.k_union)
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return null;
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// Skip delegating constructors.
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for (ICPPASTConstructorChainInitializer memberInitializer : functionDefinition
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.getMemberInitializers()) {
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IASTName memberName = memberInitializer.getMemberInitializerId();
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if (memberName != null) {
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IBinding memberBinding = memberName.resolveBinding();
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ICPPClassType classType = null;
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if (memberBinding instanceof ICPPConstructor) {
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classType = ((ICPPConstructor) memberBinding).getClassOwner();
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}
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if (classType instanceof ICPPDeferredClassInstance) {
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classType = ((ICPPDeferredClassInstance) classType).getClassTemplate();
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}
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if (classType != null && classType.isSameType(constructor.getClassOwner()))
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return null;
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}
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}
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return constructor;
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}
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}
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return null;
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}
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/**
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* Checks whether expression references this (directly, by pointer or by reference)
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*/
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private boolean referencesThis(IASTNode expr) {
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if (expr instanceof IASTLiteralExpression) {
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IASTLiteralExpression litArg = (IASTLiteralExpression) expr;
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if (litArg.getKind() == IASTLiteralExpression.lk_this) {
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return true;
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}
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} else if (expr instanceof ICPPASTUnaryExpression) {
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ICPPASTUnaryExpression unExpr = (ICPPASTUnaryExpression) expr;
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switch (unExpr.getOperator()) {
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case IASTUnaryExpression.op_amper:
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case IASTUnaryExpression.op_star:
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case IASTUnaryExpression.op_bracketedPrimary:
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return referencesThis(unExpr.getOperand());
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}
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}
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return false;
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}
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/**
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* Checks that specified declaration is a class destructor
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*/
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private ICPPMethod getDestructor(IASTDeclaration decl) {
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if (decl instanceof ICPPASTFunctionDefinition) {
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ICPPASTFunctionDefinition functionDefinition = (ICPPASTFunctionDefinition) decl;
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if (functionDefinition.isDeleted())
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return null;
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IBinding binding = functionDefinition.getDeclarator().getName().resolveBinding();
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if (binding instanceof ICPPMethod) {
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ICPPMethod method = (ICPPMethod) binding;
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if (method.isDestructor())
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return method;
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}
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}
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return null;
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}
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}
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}
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@ -0,0 +1,248 @@
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/*******************************************************************************
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* Copyright (c) 2019 Marco Stornelli
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*
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* This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License 2.0
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* which accompanies this distribution, and is available at
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* https://www.eclipse.org/legal/epl-2.0/
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*
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* SPDX-License-Identifier: EPL-2.0
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*******************************************************************************/
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package org.eclipse.cdt.codan.core.internal.checkers;
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import org.eclipse.cdt.codan.core.tests.CheckerTestCase;
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import org.eclipse.cdt.codan.internal.checkers.VirtualMethodCallChecker;
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/**
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* Test for {@link VirtualMethodCallChecker} class
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*/
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public class VirtualMethodCallCheckerTest extends CheckerTestCase {
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private static final String ERR_VIRTUAL_ID = VirtualMethodCallChecker.VIRTUAL_CALL_ID;
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@Override
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public void setUp() throws Exception {
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super.setUp();
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enableProblems(ERR_VIRTUAL_ID);
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}
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@Override
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public boolean isCpp() {
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return true;
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}
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//class Foo {
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//public:
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//Foo();
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//~Foo();
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//virtual void bar();
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//virtual void pure() = 0;
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//virtual void notpure();
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//};
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//Foo::Foo() {
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// pure();
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//}
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//Foo::~Foo() {
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//}
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//Foo::bar() {
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//}
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public void testWithPureInCtor() throws Exception {
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loadCodeAndRun(getAboveComment());
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checkErrorLine(10, ERR_VIRTUAL_ID);
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}
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//class Foo {
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//public:
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//Foo();
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//~Foo();
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//virtual void bar();
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//virtual void pure() = 0;
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//virtual void notpure();
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//};
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//Foo::Foo() {
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// notpure();
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//}
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//Foo::~Foo() {
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//}
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//Foo::bar() {
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//}
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public void testWithNotPureInCtor() throws Exception {
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loadCodeAndRun(getAboveComment());
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checkErrorLine(10, ERR_VIRTUAL_ID);
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}
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//class Foo {
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//public:
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//Foo();
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//~Foo();
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//virtual void bar();
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//virtual void pure() = 0;
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//virtual void notpure();
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//};
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//Foo::Foo() {
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//}
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//Foo::~Foo() {
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// pure();
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//}
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//Foo::bar() {
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//}
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public void testWithPureInDtor() throws Exception {
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loadCodeAndRun(getAboveComment());
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checkErrorLine(12, ERR_VIRTUAL_ID);
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}
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//class Foo {
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//public:
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//Foo();
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//~Foo();
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//virtual void bar();
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//virtual void pure() = 0;
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//virtual void notpure();
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//};
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//Foo::Foo() {
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//}
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//Foo::~Foo() {
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// notpure();
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//}
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//Foo::bar() {
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//}
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public void testWithNotPureInDtor() throws Exception {
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loadCodeAndRun(getAboveComment());
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checkErrorLine(12, ERR_VIRTUAL_ID);
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}
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//class Foo {
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//public:
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//Foo();
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//~Foo();
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//virtual void bar();
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//virtual void pure() = 0;
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//virtual void notpure();
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//};
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//Foo::Foo() {
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//}
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//Foo::~Foo() {
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//}
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//Foo::bar() {
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// pure();
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// notpure();
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//}
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public void testWithVirtualInMethod() throws Exception {
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loadCodeAndRun(getAboveComment());
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checkNoErrorsOfKind(ERR_VIRTUAL_ID);
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}
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//class A {
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//public:
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// virtual void v() {}
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//};
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//class B {
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//private:
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//A a;
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//public:
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// B() { a.v(); }
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//};
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public void testVirtualMethodOtherClass() throws Exception {
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loadCodeAndRun(getAboveComment());
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checkNoErrorsOfKind(ERR_VIRTUAL_ID);
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}
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//class B {
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//private:
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//A a;
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//public:
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// B() { this->v(); }
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// virtual void v() {}
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//};
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public void testVirtualMethodWithThis() throws Exception {
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loadCodeAndRun(getAboveComment());
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checkErrorLine(5, ERR_VIRTUAL_ID);
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}
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//class B {
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//private:
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//A a;
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//public:
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// B() { (*this).v(); }
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// virtual void v() {}
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//};
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public void testVirtualMethodWithDerThis() throws Exception {
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loadCodeAndRun(getAboveComment());
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checkErrorLine(5, ERR_VIRTUAL_ID);
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}
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//class A {
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//public:
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// virtual void v() {}
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//};
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//class B: public A {
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//public:
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// B() { A::v(); }
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//};
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public void testVirtualMethodChildClass() throws Exception {
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loadCodeAndRun(getAboveComment());
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checkErrorLine(7, ERR_VIRTUAL_ID);
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}
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//class Foo {
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//public:
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// Foo() {
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// class LocalClass {
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// LocalClass() {}
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// virtual void foo() {
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// }
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// void func() {
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// foo();
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// }
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// virtual ~LocalClass() {}
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// };
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// }
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//};
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public void testVirtualMethodLocalClass() throws Exception {
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loadCodeAndRun(getAboveComment());
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checkNoErrorsOfKind(ERR_VIRTUAL_ID);
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}
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//class A {
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//public:
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// A() : A(5) { foo(); }
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// A(int a) : a(a) { }
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// virtual void foo();
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//private:
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// int a;
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//};
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public void testVirtualMethodDelCtor() throws Exception {
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loadCodeAndRun(getAboveComment());
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checkNoErrorsOfKind(ERR_VIRTUAL_ID);
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}
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//class A {
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//public:
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// A() {
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// A a;
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// a.foo();
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// }
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// virtual void foo();
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//};
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public void testVirtualMethodOtherInstance() throws Exception {
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loadCodeAndRun(getAboveComment());
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checkNoErrorsOfKind(ERR_VIRTUAL_ID);
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}
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//class A {
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//public:
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// A() {
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// foo();
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// }
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// virtual void foo();
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// class Nested {
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// public:
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// Nested() { bar(); };
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// virtual void bar();
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// }
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//};
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public void testVirtualMethodNested() throws Exception {
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loadCodeAndRun(getAboveComment());
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checkErrorLines(4, 9);
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}
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}
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@ -36,6 +36,7 @@ import org.eclipse.cdt.codan.core.internal.checkers.SuggestedParenthesisCheckerT
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import org.eclipse.cdt.codan.core.internal.checkers.SuspiciousSemicolonCheckerTest;
|
||||
import org.eclipse.cdt.codan.core.internal.checkers.SwitchCaseCheckerTest;
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||||
import org.eclipse.cdt.codan.core.internal.checkers.UnusedSymbolInFileScopeCheckerTest;
|
||||
import org.eclipse.cdt.codan.core.internal.checkers.VirtualMethodCallCheckerTest;
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||||
import org.eclipse.cdt.codan.internal.checkers.ui.quickfix.AssignmentInConditionQuickFixTest;
|
||||
import org.eclipse.cdt.codan.internal.checkers.ui.quickfix.CaseBreakQuickFixBreakTest;
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||||
import org.eclipse.cdt.codan.internal.checkers.ui.quickfix.CaseBreakQuickFixCommentTest;
|
||||
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@ -90,6 +91,7 @@ public class AutomatedIntegrationSuite extends TestSuite {
|
|||
suite.addTestSuite(GotoStatementCheckerTest.class);
|
||||
suite.addTestSuite(CopyrightCheckerTest.class);
|
||||
suite.addTestSuite(SwitchCaseCheckerTest.class);
|
||||
suite.addTestSuite(VirtualMethodCallCheckerTest.class);
|
||||
// framework
|
||||
suite.addTest(CodanFastTestSuite.suite());
|
||||
// quick fixes
|
||||
|
|
|
|||
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Add table
Reference in a new issue