2009-02-10 20:40:21 +01:00
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/*
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* Cppcheck - A tool for static C/C++ code analysis
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2020-05-10 11:16:32 +02:00
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* Copyright (C) 2007-2020 Cppcheck team.
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2009-02-10 20:40:21 +01:00
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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2009-09-27 17:08:31 +02:00
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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2009-02-10 20:40:21 +01:00
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*/
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//---------------------------------------------------------------------------
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#ifndef checkstlH
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#define checkstlH
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//---------------------------------------------------------------------------
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2009-03-18 22:40:38 +01:00
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#include "check.h"
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2017-05-27 04:33:47 +02:00
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#include "config.h"
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2020-05-23 07:16:49 +02:00
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#include "errortypes.h"
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2017-05-27 04:33:47 +02:00
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#include "tokenize.h"
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2020-04-13 13:44:48 +02:00
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#include "utils.h"
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#include "valueflow.h"
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2017-05-27 04:33:47 +02:00
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#include <string>
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class Scope;
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class Settings;
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class Token;
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class Variable;
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2020-05-23 07:16:49 +02:00
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class ErrorLogger;
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2009-03-18 22:40:38 +01:00
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2009-02-10 20:40:21 +01:00
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2009-07-17 10:49:01 +02:00
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/// @addtogroup Checks
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/// @{
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2010-01-22 19:29:24 +01:00
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/** @brief %Check STL usage (invalidation of iterators, mismatching containers, etc) */
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2012-06-10 14:19:09 +02:00
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class CPPCHECKLIB CheckStl : public Check {
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2009-02-10 20:40:21 +01:00
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public:
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2009-03-21 07:53:23 +01:00
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/** This constructor is used when registering the CheckClass */
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2014-11-20 14:20:09 +01:00
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CheckStl() : Check(myName()) {
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2013-08-07 16:27:37 +02:00
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}
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2009-03-20 17:15:51 +01:00
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2010-03-17 22:16:18 +01:00
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/** This constructor is used when running checks. */
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2018-01-10 09:37:21 +01:00
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CheckStl(const Tokenizer* tokenizer, const Settings* settings, ErrorLogger* errorLogger)
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2014-11-20 14:20:09 +01:00
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: Check(myName(), tokenizer, settings, errorLogger) {
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2013-08-07 16:27:37 +02:00
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}
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2009-03-18 22:40:38 +01:00
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2018-08-11 11:40:48 +02:00
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/** run checks, the token list is not simplified */
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2019-09-20 21:57:16 +02:00
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void runChecks(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger) OVERRIDE {
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2018-08-11 11:40:48 +02:00
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if (!tokenizer->isCPP()) {
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return;
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}
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CheckStl checkStl(tokenizer, settings, errorLogger);
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2019-03-08 20:36:40 +01:00
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checkStl.erase();
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2019-03-08 20:23:37 +01:00
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checkStl.if_find();
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2019-05-02 11:04:23 +02:00
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checkStl.checkFindInsert();
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2019-03-08 20:28:28 +01:00
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checkStl.iterators();
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2019-03-08 20:31:00 +01:00
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checkStl.mismatchingContainers();
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2019-03-08 20:19:40 +01:00
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checkStl.missingComparison();
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2018-08-11 11:40:48 +02:00
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checkStl.outOfBounds();
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2018-11-28 19:27:28 +01:00
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checkStl.outOfBoundsIndexExpression();
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2019-03-09 07:53:49 +01:00
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checkStl.redundantCondition();
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2019-03-08 20:39:19 +01:00
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checkStl.string_c_str();
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2019-03-09 07:37:08 +01:00
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checkStl.uselessCalls();
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2019-03-15 06:15:56 +01:00
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checkStl.useStlAlgorithm();
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2009-03-20 17:15:51 +01:00
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checkStl.stlOutOfBounds();
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2017-08-22 11:04:02 +02:00
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checkStl.negativeIndex();
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2019-07-18 10:56:44 +02:00
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checkStl.invalidContainer();
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2020-04-04 11:47:02 +02:00
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checkStl.invalidContainerLoop();
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2019-07-18 10:56:44 +02:00
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checkStl.mismatchingContainers();
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2020-06-06 17:54:56 +02:00
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checkStl.mismatchingContainerIterator();
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2019-07-18 10:56:44 +02:00
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2013-02-10 07:43:09 +01:00
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checkStl.stlBoundaries();
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2013-04-05 06:14:59 +02:00
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checkStl.checkDereferenceInvalidIterator();
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2020-06-16 02:40:54 +02:00
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checkStl.checkMutexes();
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2009-12-28 18:06:26 +01:00
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2010-04-21 08:38:25 +02:00
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// Style check
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checkStl.size();
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2009-03-18 22:40:38 +01:00
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}
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2009-02-10 20:40:21 +01:00
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2018-08-11 11:40:48 +02:00
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/** Accessing container out of bounds using ValueFlow */
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void outOfBounds();
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2009-02-10 20:56:00 +01:00
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2018-11-28 19:27:28 +01:00
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/** Accessing container out of bounds, following index expression */
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void outOfBoundsIndexExpression();
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2009-02-10 20:56:00 +01:00
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/**
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* Finds errors like this:
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* for (unsigned ii = 0; ii <= foo.size(); ++ii)
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*/
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void stlOutOfBounds();
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2017-08-22 11:04:02 +02:00
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/**
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* negative index for array like containers
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*/
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void negativeIndex();
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2009-02-11 06:08:29 +01:00
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/**
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* Finds errors like this:
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* for (it = foo.begin(); it != bar.end(); ++it)
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*/
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2009-02-10 20:40:21 +01:00
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void iterators();
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2019-07-18 10:56:44 +02:00
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void invalidContainer();
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2020-04-04 14:49:08 +02:00
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2020-04-04 11:47:02 +02:00
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void invalidContainerLoop();
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2019-07-18 10:56:44 +02:00
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2019-12-25 09:32:50 +01:00
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bool checkIteratorPair(const Token* tok1, const Token* tok2);
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2009-10-18 18:42:01 +02:00
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/**
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* Mismatching containers:
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* std::find(foo.begin(), bar.end(), x)
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*/
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void mismatchingContainers();
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2020-06-08 00:50:45 +02:00
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2020-06-06 17:54:56 +02:00
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void mismatchingContainerIterator();
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2009-10-18 18:42:01 +02:00
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2009-02-11 06:08:29 +01:00
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/**
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2010-10-15 18:37:48 +02:00
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* Dangerous usage of erase. The iterator is invalidated by erase so
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* it is bad to dereference it after the erase.
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2009-02-11 06:08:29 +01:00
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*/
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void erase();
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2018-01-10 09:37:21 +01:00
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void eraseCheckLoopVar(const Scope& scope, const Variable* var);
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2010-10-05 20:54:13 +02:00
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2009-04-13 17:48:13 +02:00
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/**
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* bad condition.. "it < alist.end()"
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*/
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2013-02-10 07:43:09 +01:00
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void stlBoundaries();
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2009-11-02 20:25:08 +01:00
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2010-02-27 21:26:11 +01:00
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/** if (a.find(x)) - possibly incorrect condition */
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void if_find();
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2019-05-02 11:04:23 +02:00
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void checkFindInsert();
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2009-12-19 15:24:59 +01:00
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/**
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* Suggest using empty() instead of checking size() against zero for containers.
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* Item 4 from Scott Meyers book "Effective STL".
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*/
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void size();
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2010-09-16 18:49:23 +02:00
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/**
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* Check for redundant condition 'if (ints.find(1) != ints.end()) ints.remove(123);'
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* */
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void redundantCondition();
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2010-10-10 10:52:41 +02:00
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/**
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* @brief Missing inner comparison, when incrementing iterator inside loop
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* Dangers:
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* - may increment iterator beyond end
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* - may unintentionally skip elements in list/set etc
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*/
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void missingComparison();
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2010-10-17 19:18:46 +02:00
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/** Check for common mistakes when using the function string::c_str() */
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void string_c_str();
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2011-10-24 23:25:23 +02:00
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/** @brief %Check calls that using them is useless */
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void uselessCalls();
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2013-06-12 22:13:05 +02:00
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/** @brief %Check for dereferencing an iterator that is invalid */
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2013-04-05 06:14:59 +02:00
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void checkDereferenceInvalidIterator();
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2011-10-24 23:25:23 +02:00
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2012-10-14 11:16:48 +02:00
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/**
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* Dereferencing an erased iterator
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2012-10-24 01:20:14 +02:00
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* @param erased token where the erase occurs
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* @param deref token where the dereference occurs
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2012-10-14 11:16:48 +02:00
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* @param itername iterator name
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2018-01-10 09:37:21 +01:00
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* @param inconclusive inconclusive flag
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2012-10-14 11:16:48 +02:00
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*/
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2018-01-10 09:37:21 +01:00
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void dereferenceErasedError(const Token* erased, const Token* deref, const std::string& itername, bool inconclusive);
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2011-06-16 20:26:00 +02:00
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2018-08-10 11:29:16 +02:00
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/** @brief Reading from empty stl container (using valueflow) */
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void readingEmptyStlContainer2();
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2018-09-19 18:58:59 +02:00
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/** @brief Look for loops that can replaced with std algorithms */
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void useStlAlgorithm();
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2020-06-16 02:40:54 +02:00
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void checkMutexes();
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2018-09-19 18:58:59 +02:00
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2018-09-21 08:53:09 +02:00
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private:
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2019-06-15 13:05:17 +02:00
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bool isContainerSize(const Token *containerToken, const Token *expr) const;
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2018-11-28 19:27:28 +01:00
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bool isContainerSizeGE(const Token * containerToken, const Token *expr) const;
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2018-01-10 09:37:21 +01:00
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void missingComparisonError(const Token* incrementToken1, const Token* incrementToken2);
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void string_c_strThrowError(const Token* tok);
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void string_c_strError(const Token* tok);
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void string_c_strReturn(const Token* tok);
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2019-07-15 14:05:23 +02:00
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void string_c_strParam(const Token* tok, nonneg int number);
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2018-01-10 09:37:21 +01:00
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2019-03-29 11:13:25 +01:00
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void outOfBoundsError(const Token *tok, const std::string &containerName, const ValueFlow::Value *containerSize, const std::string &index, const ValueFlow::Value *indexValue);
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2018-11-28 19:27:28 +01:00
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void outOfBoundsIndexExpressionError(const Token *tok, const Token *index);
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2018-01-10 09:37:21 +01:00
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void stlOutOfBoundsError(const Token* tok, const std::string& num, const std::string& var, bool at);
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void negativeIndexError(const Token* tok, const ValueFlow::Value& index);
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void invalidIteratorError(const Token* tok, const std::string& iteratorName);
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2018-10-17 06:36:51 +02:00
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void iteratorsError(const Token* tok, const std::string& containerName1, const std::string& containerName2);
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void iteratorsError(const Token* tok, const Token* containerTok, const std::string& containerName1, const std::string& containerName2);
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void iteratorsError(const Token* tok, const Token* containerTok, const std::string& containerName);
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2020-06-06 17:54:56 +02:00
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void mismatchingContainerIteratorError(const Token* tok, const Token* iterTok);
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2019-12-25 09:32:50 +01:00
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void mismatchingContainersError(const Token* tok1, const Token* tok2);
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2018-07-26 22:00:48 +02:00
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void mismatchingContainerExpressionError(const Token *tok1, const Token *tok2);
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2018-08-05 09:10:54 +02:00
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void sameIteratorExpressionError(const Token *tok);
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2018-01-10 09:37:21 +01:00
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void stlBoundariesError(const Token* tok);
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void if_findError(const Token* tok, bool str);
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2019-05-02 11:04:23 +02:00
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void checkFindInsertError(const Token *tok);
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2018-01-10 09:37:21 +01:00
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void sizeError(const Token* tok);
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void redundantIfRemoveError(const Token* tok);
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2020-04-04 11:47:02 +02:00
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void invalidContainerLoopError(const Token *tok, const Token * loopTok);
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2019-07-18 10:56:44 +02:00
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void invalidContainerError(const Token *tok, const Token * contTok, const ValueFlow::Value *val, ErrorPath errorPath);
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2019-09-02 06:58:09 +02:00
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void invalidContainerReferenceError(const Token* tok, const Token* contTok, ErrorPath errorPath);
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2018-01-10 09:37:21 +01:00
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void uselessCallsReturnValueError(const Token* tok, const std::string& varname, const std::string& function);
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void uselessCallsSwapError(const Token* tok, const std::string& varname);
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void uselessCallsSubstrError(const Token* tok, bool empty);
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void uselessCallsEmptyError(const Token* tok);
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void uselessCallsRemoveError(const Token* tok, const std::string& function);
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void dereferenceInvalidIteratorError(const Token* deref, const std::string& iterName);
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2018-08-10 11:29:16 +02:00
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void readingEmptyStlContainerError(const Token* tok, const ValueFlow::Value *value=nullptr);
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2018-01-10 09:37:21 +01:00
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2018-09-19 18:58:59 +02:00
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void useStlAlgorithmError(const Token *tok, const std::string &algoName);
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2020-06-16 02:40:54 +02:00
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void globalLockGuardError(const Token *tok);
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void localMutexError(const Token *tok);
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2019-01-12 07:37:42 +01:00
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void getErrorMessages(ErrorLogger* errorLogger, const Settings* settings) const OVERRIDE {
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2019-07-18 10:56:44 +02:00
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ErrorPath errorPath;
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2016-05-07 16:30:54 +02:00
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CheckStl c(nullptr, settings, errorLogger);
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2019-03-29 11:13:25 +01:00
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c.outOfBoundsError(nullptr, "container", nullptr, "x", nullptr);
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2016-05-07 16:30:54 +02:00
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c.invalidIteratorError(nullptr, "iterator");
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c.iteratorsError(nullptr, "container1", "container2");
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2019-01-09 06:45:38 +01:00
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c.iteratorsError(nullptr, nullptr, "container0", "container1");
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2018-10-17 06:36:51 +02:00
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c.iteratorsError(nullptr, nullptr, "container");
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2020-04-04 11:47:02 +02:00
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c.invalidContainerLoopError(nullptr, nullptr);
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2019-07-18 10:56:44 +02:00
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c.invalidContainerError(nullptr, nullptr, nullptr, errorPath);
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2020-06-06 17:54:56 +02:00
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c.mismatchingContainerIteratorError(nullptr, nullptr);
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2019-12-25 09:32:50 +01:00
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c.mismatchingContainersError(nullptr, nullptr);
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2018-07-26 22:00:48 +02:00
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c.mismatchingContainerExpressionError(nullptr, nullptr);
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2018-08-05 09:10:54 +02:00
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c.sameIteratorExpressionError(nullptr);
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2018-01-10 09:37:21 +01:00
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c.dereferenceErasedError(nullptr, nullptr, "iter", false);
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2016-05-07 16:30:54 +02:00
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c.stlOutOfBoundsError(nullptr, "i", "foo", false);
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2017-08-22 11:04:02 +02:00
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c.negativeIndexError(nullptr, ValueFlow::Value(-1));
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2016-05-07 16:30:54 +02:00
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c.stlBoundariesError(nullptr);
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c.if_findError(nullptr, false);
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c.if_findError(nullptr, true);
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2019-05-02 11:04:23 +02:00
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c.checkFindInsertError(nullptr);
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2016-05-07 16:30:54 +02:00
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c.string_c_strError(nullptr);
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c.string_c_strReturn(nullptr);
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c.string_c_strParam(nullptr, 0);
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2018-06-20 10:43:13 +02:00
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c.string_c_strThrowError(nullptr);
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2016-05-07 16:30:54 +02:00
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c.sizeError(nullptr);
|
2017-08-09 20:00:26 +02:00
|
|
|
c.missingComparisonError(nullptr, nullptr);
|
2016-05-07 16:30:54 +02:00
|
|
|
c.redundantIfRemoveError(nullptr);
|
|
|
|
c.uselessCallsReturnValueError(nullptr, "str", "find");
|
|
|
|
c.uselessCallsSwapError(nullptr, "str");
|
|
|
|
c.uselessCallsSubstrError(nullptr, false);
|
|
|
|
c.uselessCallsEmptyError(nullptr);
|
|
|
|
c.uselessCallsRemoveError(nullptr, "remove");
|
|
|
|
c.dereferenceInvalidIteratorError(nullptr, "i");
|
|
|
|
c.readingEmptyStlContainerError(nullptr);
|
2018-09-19 18:58:59 +02:00
|
|
|
c.useStlAlgorithmError(nullptr, "");
|
2020-06-16 02:40:54 +02:00
|
|
|
c.globalLockGuardError(nullptr);
|
|
|
|
c.localMutexError(nullptr);
|
2009-03-21 14:07:51 +01:00
|
|
|
}
|
2009-06-12 12:19:37 +02:00
|
|
|
|
2014-11-20 14:20:09 +01:00
|
|
|
static std::string myName() {
|
2009-06-12 15:20:08 +02:00
|
|
|
return "STL usage";
|
|
|
|
}
|
|
|
|
|
2019-01-12 07:37:42 +01:00
|
|
|
std::string classInfo() const OVERRIDE {
|
2009-06-12 15:20:08 +02:00
|
|
|
return "Check for invalid usage of STL:\n"
|
2014-09-30 14:56:12 +02:00
|
|
|
"- out of bounds errors\n"
|
|
|
|
"- misuse of iterators when iterating through a container\n"
|
|
|
|
"- mismatching containers in calls\n"
|
2018-08-05 09:10:54 +02:00
|
|
|
"- same iterators in calls\n"
|
2014-09-30 14:56:12 +02:00
|
|
|
"- dereferencing an erased iterator\n"
|
|
|
|
"- for vectors: using iterator/pointer after push_back has been used\n"
|
|
|
|
"- optimisation: use empty() instead of size() to guarantee fast code\n"
|
|
|
|
"- suspicious condition when using find\n"
|
2019-05-02 11:04:23 +02:00
|
|
|
"- unnecessary searching in associative containers\n"
|
2014-09-30 14:56:12 +02:00
|
|
|
"- redundant condition\n"
|
|
|
|
"- common mistakes when using string::c_str()\n"
|
|
|
|
"- useless calls of string and STL functions\n"
|
|
|
|
"- dereferencing an invalid iterator\n"
|
2018-09-19 18:58:59 +02:00
|
|
|
"- reading from empty STL container\n"
|
2020-06-16 02:43:33 +02:00
|
|
|
"- consider using an STL algorithm instead of raw loop\n"
|
|
|
|
"- incorrect locking with mutex\n";
|
2009-06-12 12:19:37 +02:00
|
|
|
}
|
2009-02-10 20:40:21 +01:00
|
|
|
};
|
2009-07-17 10:49:01 +02:00
|
|
|
/// @}
|
2009-02-10 20:40:21 +01:00
|
|
|
//---------------------------------------------------------------------------
|
2013-09-04 20:59:49 +02:00
|
|
|
#endif // checkstlH
|