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/* -*- 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 "plugin.hxx"
namespace {
class DerefNullPtr:
public RecursiveASTVisitor<DerefNullPtr>, public loplugin::Plugin
{
public:
explicit DerefNullPtr(InstantiationData const & data): Plugin(data) {}
void run() override
{ TraverseDecl(compiler.getASTContext().getTranslationUnitDecl()); }
bool VisitUnaryDeref(UnaryOperator const * op);
};
bool DerefNullPtr::VisitUnaryDeref(UnaryOperator const * op) {
if (!ignoreLocation(op)
&& (op->getSubExpr()->IgnoreParenCasts()->isNullPointerConstant(
compiler.getASTContext(), Expr::NPC_NeverValueDependent/*TODO*/)
!= Expr::NPCK_NotNull))
{
report(
DiagnosticsEngine::Warning, "null pointer dereference",
op->getLocStart())
<< op->getSourceRange();
}
return true;
}
loplugin::Plugin::Registration<DerefNullPtr> X("derefnullptr");
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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