d71bcc4dc5
Change-Id: Ia544298334364ece3b3963a4adc00c5e01189b91 Reviewed-on: https://gerrit.libreoffice.org/44654 Tested-by: Jenkins <ci@libreoffice.org> Reviewed-by: Mark Page <aptitude@btconnect.com>
113 lines
4.3 KiB
C++
113 lines
4.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/*
|
|
* This file is part of the LibreOffice project.
|
|
*
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
*/
|
|
|
|
#include <string>
|
|
#include <iostream>
|
|
|
|
#include "plugin.hxx"
|
|
#include "compat.hxx"
|
|
#include "clang/AST/CXXInheritance.h"
|
|
|
|
|
|
// Check for calls to virtual methods from destructors. These are dangerous because intention might be to call
|
|
// a method on a subclass, while in actual fact, it only calls the method on the current or super class.
|
|
//
|
|
|
|
namespace {
|
|
|
|
class FragileDestructor:
|
|
public RecursiveASTVisitor<FragileDestructor>, public loplugin::Plugin
|
|
{
|
|
public:
|
|
explicit FragileDestructor(loplugin::InstantiationData const & data):
|
|
Plugin(data) {}
|
|
|
|
virtual void run() override { TraverseDecl(compiler.getASTContext().getTranslationUnitDecl()); }
|
|
|
|
bool TraverseCXXDestructorDecl(CXXDestructorDecl *);
|
|
|
|
bool VisitCXXMemberCallExpr(const CXXMemberCallExpr *);
|
|
|
|
private:
|
|
bool mbChecking = false;
|
|
};
|
|
|
|
bool FragileDestructor::TraverseCXXDestructorDecl(CXXDestructorDecl* pCXXDestructorDecl)
|
|
{
|
|
if (ignoreLocation(pCXXDestructorDecl)) {
|
|
return RecursiveASTVisitor::TraverseCXXDestructorDecl(pCXXDestructorDecl);
|
|
}
|
|
if (!pCXXDestructorDecl->isThisDeclarationADefinition()) {
|
|
return RecursiveASTVisitor::TraverseCXXDestructorDecl(pCXXDestructorDecl);
|
|
}
|
|
// ignore this for now, too tricky for me to work out
|
|
StringRef aFileName = compiler.getSourceManager().getFilename(
|
|
compiler.getSourceManager().getSpellingLoc(pCXXDestructorDecl->getLocStart()));
|
|
if (loplugin::hasPathnamePrefix(aFileName, SRCDIR "/include/comphelper/")
|
|
|| loplugin::hasPathnamePrefix(aFileName, SRCDIR "/include/cppuhelper/")
|
|
|| loplugin::hasPathnamePrefix(aFileName, SRCDIR "/cppuhelper/")
|
|
|| loplugin::hasPathnamePrefix(aFileName, SRCDIR "/comphelper/")
|
|
// don't know how to detect this in clang - it is making an explicit call to its own method, so presumably OK
|
|
|| loplugin::isSamePathname(aFileName, SRCDIR "/basic/source/sbx/sbxvalue.cxx")
|
|
)
|
|
return RecursiveASTVisitor::TraverseCXXDestructorDecl(pCXXDestructorDecl);
|
|
mbChecking = true;
|
|
bool ret = RecursiveASTVisitor::TraverseCXXDestructorDecl(pCXXDestructorDecl);
|
|
mbChecking = false;
|
|
return ret;
|
|
}
|
|
|
|
bool FragileDestructor::VisitCXXMemberCallExpr(const CXXMemberCallExpr* callExpr)
|
|
{
|
|
if (!mbChecking || ignoreLocation(callExpr)) {
|
|
return true;
|
|
}
|
|
const CXXMethodDecl* methodDecl = callExpr->getMethodDecl();
|
|
if (!methodDecl->isVirtual() || methodDecl->hasAttr<FinalAttr>()) {
|
|
return true;
|
|
}
|
|
const CXXRecordDecl* parentRecordDecl = methodDecl->getParent();
|
|
if (parentRecordDecl->hasAttr<FinalAttr>()) {
|
|
return true;
|
|
}
|
|
if (!callExpr->getImplicitObjectArgument()->IgnoreImpCasts()->isImplicitCXXThis()) {
|
|
return true;
|
|
}
|
|
// if we see an explicit call to its own method, that's OK
|
|
auto s1 = compiler.getSourceManager().getCharacterData(callExpr->getLocStart());
|
|
auto s2 = compiler.getSourceManager().getCharacterData(callExpr->getLocEnd());
|
|
std::string tok(s1, s2-s1);
|
|
if (tok.find("::") != std::string::npos) {
|
|
return true;
|
|
}
|
|
// e.g. osl/thread.hxx and cppuhelper/compbase.hxx
|
|
StringRef aFileName = compiler.getSourceManager().getFilename(compiler.getSourceManager().getSpellingLoc(methodDecl->getLocStart()));
|
|
if (loplugin::hasPathnamePrefix(aFileName, SRCDIR "/include/osl/")
|
|
|| loplugin::hasPathnamePrefix(aFileName, SRCDIR "/include/comphelper/")
|
|
|| loplugin::hasPathnamePrefix(aFileName, SRCDIR "/include/cppuhelper/"))
|
|
return true;
|
|
report(
|
|
DiagnosticsEngine::Warning,
|
|
"calling virtual method from destructor, either make the virtual method SAL_FINAL, or make this class SAL_FINAL",
|
|
callExpr->getLocStart())
|
|
<< callExpr->getSourceRange();
|
|
report(
|
|
DiagnosticsEngine::Note,
|
|
"callee method here",
|
|
methodDecl->getLocStart())
|
|
<< methodDecl->getSourceRange();
|
|
return true;
|
|
}
|
|
|
|
|
|
loplugin::Plugin::Registration< FragileDestructor > X("fragiledestructor", false);
|
|
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|