cppcheck/lib/checkboost.cpp

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/*
* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2017 Cppcheck team.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "checkboost.h"
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#include "errorlogger.h"
#include "symboldatabase.h"
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#include "token.h"
#include <cstddef>
// Register this check class (by creating a static instance of it)
namespace {
CheckBoost instance;
}
static const CWE CWE664(664);
void CheckBoost::checkBoostForeachModification()
{
const SymbolDatabase *symbolDatabase = _tokenizer->getSymbolDatabase();
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for (const Scope * scope : symbolDatabase->functionScopes) {
for (const Token *tok = scope->classStart->next(); tok && tok != scope->classEnd; tok = tok->next()) {
if (!Token::simpleMatch(tok, "BOOST_FOREACH ("))
continue;
const Token *containerTok = tok->next()->link()->previous();
if (!Token::Match(containerTok, "%var% ) {"))
continue;
const Token *tok2 = containerTok->tokAt(2);
const Token *end = tok2->link();
for (; tok2 != end; tok2 = tok2->next()) {
if (Token::Match(tok2, "%varid% . insert|erase|push_back|push_front|pop_front|pop_back|clear|swap|resize|assign|merge|remove|remove_if|reverse|sort|splice|unique|pop|push", containerTok->varId())) {
const Token* nextStatement = Token::findsimplematch(tok2->linkAt(3), ";", end);
if (!Token::Match(nextStatement, "; break|return|throw"))
boostForeachError(tok2);
break;
}
}
}
}
}
void CheckBoost::boostForeachError(const Token *tok)
{
reportError(tok, Severity::error, "boostForeachError",
"BOOST_FOREACH caches the end() iterator. It's undefined behavior if you modify the container inside.", CWE664, false
);
}