8b1fcedcd1
<http://reviews.llvm.org/D22128> "Make CastExpr::getSubExprAsWritten look through implicit temporary under CK_ConstructorConversion" was biting me again. (I had originally developed loplugin:stringcopy against a Clang build that includes my local fix for that issue. I really need to see to get that resolved upstream...) (And while 957874168491f4b030fda85c65dd969aae82a670 "loplugin:stringcopy" was actually a false positive, it doesn't hurt either, so just keep it.) Change-Id: I726956adfbe67681005173cfdfed2e4b4cd6253d
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
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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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#include "check.hxx"
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#include "compat.hxx"
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#include "plugin.hxx"
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namespace {
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class Visitor final:
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public RecursiveASTVisitor<Visitor>, public loplugin::Plugin
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{
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public:
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explicit Visitor(InstantiationData const & data): Plugin(data) {}
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bool VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr const * expr) {
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if (ignoreLocation(expr)) {
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return true;
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}
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auto const t1 = expr->getTypeAsWritten();
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auto const t2 = compat::getSubExprAsWritten(expr)->getType();
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if ((t1.getCanonicalType().getTypePtr()
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!= t2.getCanonicalType().getTypePtr())
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|| !(loplugin::TypeCheck(t1).Class("OUString").Namespace("rtl")
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.GlobalNamespace()))
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{
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return true;
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}
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report(
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DiagnosticsEngine::Warning,
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"redundant copy construction from %0 to %1", expr->getExprLoc())
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<< t2 << t1 << expr->getSourceRange();
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return true;
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}
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private:
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void run() override {
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if (compiler.getLangOpts().CPlusPlus) {
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TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
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}
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}
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};
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static loplugin::Plugin::Registration<Visitor> reg("stringcopy");
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
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