52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#ifndef LO_CLANG_SHARED_PLUGINS
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#include "plugin.hxx"
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namespace {
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class DerefNullPtr:
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public loplugin::FilteringPlugin<DerefNullPtr>
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{
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public:
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explicit DerefNullPtr(loplugin::InstantiationData const & data):
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FilteringPlugin(data) {}
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void run() override
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{ TraverseDecl(compiler.getASTContext().getTranslationUnitDecl()); }
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bool VisitUnaryOperator(UnaryOperator const * op);
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};
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bool DerefNullPtr::VisitUnaryOperator(UnaryOperator const * op) {
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if (op->getOpcode() != UO_Deref) {
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return true;
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}
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if (!ignoreLocation(op)
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&& (op->getSubExpr()->IgnoreParenCasts()->isNullPointerConstant(
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compiler.getASTContext(), Expr::NPC_ValueDependentIsNotNull/*TODO*/)
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!= Expr::NPCK_NotNull))
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{
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report(
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DiagnosticsEngine::Warning, "null pointer dereference",
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op->getBeginLoc())
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<< op->getSourceRange();
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}
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return true;
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}
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loplugin::Plugin::Registration<DerefNullPtr> derefnullptr("derefnullptr");
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}
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#endif // LO_CLANG_SHARED_PLUGINS
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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