2131 lines
79 KiB
C++
2131 lines
79 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2012 Daniel Marjamäki and Cppcheck team.
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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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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "tokenize.h"
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#include "checkstl.h"
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#include "testsuite.h"
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#include <sstream>
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extern std::ostringstream errout;
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class TestStl : public TestFixture {
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public:
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TestStl() : TestFixture("TestStl")
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{ }
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private:
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void run() {
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TEST_CASE(iterator1);
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TEST_CASE(iterator2);
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TEST_CASE(iterator3);
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TEST_CASE(iterator4);
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TEST_CASE(iterator5);
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TEST_CASE(iterator6);
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TEST_CASE(iterator7);
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TEST_CASE(iterator8);
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TEST_CASE(iterator9);
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TEST_CASE(iterator10);
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TEST_CASE(iterator11);
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TEST_CASE(iterator12);
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TEST_CASE(iterator13);
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TEST_CASE(dereference);
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TEST_CASE(dereference_break); // #3644 - handle "break"
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TEST_CASE(dereference_member);
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TEST_CASE(STLSize);
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TEST_CASE(STLSizeNoErr);
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TEST_CASE(erase1);
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TEST_CASE(erase2);
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TEST_CASE(erase3);
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TEST_CASE(erase4);
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TEST_CASE(erase5);
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TEST_CASE(erase6);
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TEST_CASE(eraseBreak);
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TEST_CASE(eraseContinue);
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TEST_CASE(eraseReturn1);
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TEST_CASE(eraseReturn2);
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TEST_CASE(eraseReturn3);
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TEST_CASE(eraseGoto);
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TEST_CASE(eraseAssign1);
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TEST_CASE(eraseAssign2);
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TEST_CASE(eraseAssign3);
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TEST_CASE(eraseAssignByFunctionCall);
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TEST_CASE(eraseErase);
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TEST_CASE(eraseByValue);
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TEST_CASE(pushback1);
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TEST_CASE(pushback2);
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TEST_CASE(pushback3);
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TEST_CASE(pushback4);
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TEST_CASE(pushback5);
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TEST_CASE(pushback6);
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TEST_CASE(pushback7);
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TEST_CASE(pushback8);
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TEST_CASE(pushback9);
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TEST_CASE(pushback10);
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TEST_CASE(pushback11);
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TEST_CASE(pushback12);
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TEST_CASE(insert1);
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TEST_CASE(insert2);
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TEST_CASE(invalidcode);
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TEST_CASE(stlBoundries1);
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TEST_CASE(stlBoundries2);
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TEST_CASE(stlBoundries3);
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TEST_CASE(stlBoundries4); // #4364
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// if (str.find("ab"))
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TEST_CASE(if_find);
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TEST_CASE(if_str_find);
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TEST_CASE(size1);
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TEST_CASE(size2);
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TEST_CASE(size3);
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// Redundant conditions..
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// if (ints.find(123) != ints.end()) ints.remove(123);
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TEST_CASE(redundantCondition1);
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TEST_CASE(redundantCondition2);
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// missing inner comparison when incrementing iterator inside loop
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TEST_CASE(missingInnerComparison1);
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TEST_CASE(missingInnerComparison2); // no FP when there is comparison
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TEST_CASE(missingInnerComparison3); // no FP when there is iterator shadowing
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TEST_CASE(missingInnerComparison4); // no FP when "break;" is used
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TEST_CASE(missingInnerComparison5); // Ticket #2154 - FP
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TEST_CASE(missingInnerComparison6); // #2643 - 'it=foo.insert(++it,0);'
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// catch common problems when using the string::c_str() function
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TEST_CASE(cstr);
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TEST_CASE(autoPointer);
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TEST_CASE(uselessCalls);
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}
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void check(const char code[], const bool inconclusive=false) {
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// Clear the error buffer..
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errout.str("");
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Settings settings;
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settings.addEnabled("style");
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settings.addEnabled("performance");
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settings.inconclusive = inconclusive;
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// Tokenize..
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Tokenizer tokenizer(&settings, this);
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std::istringstream istr(code);
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tokenizer.tokenize(istr, "test.cpp");
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tokenizer.simplifyTokenList();
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// Check..
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CheckStl checkStl;
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checkStl.runSimplifiedChecks(&tokenizer, &settings, this);
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}
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void check(const std::string &code, const bool inconclusive=false) {
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check(code.c_str(), inconclusive);
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}
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void iterator1() {
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check("void f()\n"
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"{\n"
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" list<int> l1;\n"
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" list<int> l2;\n"
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" for (list<int>::iterator it = l1.begin(); it != l2.end(); ++it)\n"
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" { }\n"
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"}\n");
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ASSERT_EQUALS("[test.cpp:5]: (error) Same iterator is used with different containers 'l1' and 'l2'.\n", errout.str());
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// Same check with reverse iterator
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check("void f()\n"
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"{\n"
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" list<int> l1;\n"
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" list<int> l2;\n"
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" for (list<int>::const_reverse_iterator it = l1.rbegin(); it != l2.rend(); ++it)\n"
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" { }\n"
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"}\n");
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ASSERT_EQUALS("[test.cpp:5]: (error) Same iterator is used with different containers 'l1' and 'l2'.\n", errout.str());
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}
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void iterator2() {
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check("void foo()\n"
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"{\n"
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" list<int> l1;\n"
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" list<int> l2;\n"
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" list<int>::iterator it = l1.begin();\n"
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" while (it != l2.end())\n"
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" {\n"
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" ++it;\n"
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" }\n"
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"}\n");
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ASSERT_EQUALS("[test.cpp:6]: (error) Same iterator is used with different containers 'l1' and 'l2'.\n", errout.str());
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}
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void iterator3() {
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check("void foo()\n"
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"{\n"
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" list<int> l1;\n"
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" list<int> l2;\n"
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" list<int>::iterator it = l1.begin();\n"
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" l2.insert(it, 0);\n"
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"}\n");
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ASSERT_EQUALS("[test.cpp:6]: (error) Same iterator is used with different containers 'l1' and 'l2'.\n", errout.str());
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}
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void iterator4() {
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check("void foo(std::vector<std::string> &test)\n"
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"{\n"
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" std::set<int> result;\n"
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" for (std::vector<std::string>::const_iterator cit = test.begin();\n"
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" cit != test.end();\n"
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" ++cit)\n"
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" {\n"
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" result.insert(cit->size());\n"
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" }\n"
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"}\n");
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ASSERT_EQUALS("", errout.str());
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}
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void iterator5() {
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check("void foo()\n"
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"{\n"
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" std::vector<int> ints1;\n"
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" std::vector<int> ints2;\n"
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" std::vector<int>::iterator it = std::find(ints1.begin(), ints2.end(), 22);\n"
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"}\n");
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ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers are used together.\n", errout.str());
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}
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void iterator6() {
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// Ticket #1357
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check("void foo(const std::set<int> &ints1)\n"
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"{\n"
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" std::set<int> ints2;\n"
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" std::set<int>::iterator it1 = ints1.begin();\n"
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" std::set<int>::iterator it2 = ints1.end();\n"
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" ints2.insert(it1, it2);\n"
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"}\n");
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ASSERT_EQUALS("", errout.str());
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check("void foo(const std::set<int> &ints1)\n"
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"{\n"
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" std::set<int> ints2;\n"
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" std::set<int>::iterator it1 = ints1.begin();\n"
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" std::set<int>::iterator it2 = ints2.end();\n"
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" ints2.insert(it1, it2);\n"
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"}\n");
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TODO_ASSERT_EQUALS("[test.cpp:6]: (error) Iterators of different containers are used together.\n", "", errout.str());
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}
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void iterator7() {
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check("void foo()\n"
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"{\n"
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" std::vector<int> ints1;\n"
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" std::vector<int> ints2;\n"
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" std::vector<int>::iterator it = std::inplace_merge(ints1.begin(), std::advance(ints1.rbegin(), 5), ints2.end());\n"
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"}\n");
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ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers are used together.\n", errout.str());
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check("void foo()\n"
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"{\n"
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" std::vector<int> ints1;\n"
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" std::vector<int> ints2;\n"
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" std::vector<int>::iterator it = std::inplace_merge(ints1.begin(), std::advance(ints2.rbegin(), 5), ints1.end());\n"
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"}\n");
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ASSERT_EQUALS("", errout.str());
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}
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void iterator8() {
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check("void foo()\n"
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"{\n"
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" std::vector<int> ints1;\n"
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" std::vector<int> ints2;\n"
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" std::vector<int>::iterator it = std::find_first_of(ints1.begin(), ints2.end(), ints1.begin(), ints1.end());\n"
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"}\n");
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ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers are used together.\n", errout.str());
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check("void foo()\n"
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"{\n"
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" std::vector<int> ints1;\n"
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" std::vector<int> ints2;\n"
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" std::vector<int>::iterator it = std::find_first_of(ints1.begin(), ints1.end(), ints2.begin(), ints1.end());\n"
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"}\n");
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ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers are used together.\n", errout.str());
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check("void foo()\n"
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"{\n"
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" std::vector<int> ints1;\n"
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" std::vector<int> ints2;\n"
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" std::vector<int>::iterator it = std::find_first_of(foo.bar.begin(), foo.bar.end()-6, ints2.begin(), ints1.end());\n"
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"}");
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ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers are used together.\n", errout.str());
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check("void foo()\n"
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"{\n"
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" std::vector<int> ints1;\n"
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" std::vector<int> ints2;\n"
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" std::vector<int>::iterator it = std::find_first_of(ints1.begin(), ints1.end(), ints2.begin(), ints2.end());\n"
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"}\n");
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ASSERT_EQUALS("", errout.str());
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}
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void iterator9() {
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// Ticket #1600
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check("void foo(std::vector<int> &r)\n"
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"{\n"
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" std::vector<int>::iterator aI = r.begin();\n"
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" while(aI != r.end())\n"
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" {\n"
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" if (*aI == 0)\n"
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" {\n"
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" r.insert(aI, 42);\n"
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" return;\n"
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" }\n"
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" ++aI;\n"
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" }\n"
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"}\n");
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ASSERT_EQUALS("", errout.str());
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// Ticket #2481
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check("void foo(std::vector<int> &r)\n"
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"{\n"
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" std::vector<int>::iterator aI = r.begin();\n"
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" while(aI != r.end())\n"
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" {\n"
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" if (*aI == 0)\n"
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" {\n"
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" r.insert(aI, 42);\n"
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" break;\n"
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" }\n"
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" ++aI;\n"
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" }\n"
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"}\n");
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ASSERT_EQUALS("", errout.str());
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// Execution path checking..
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check("void foo(std::vector<int> &r, int c)\n"
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"{\n"
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" std::vector<int>::iterator aI = r.begin();\n"
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" while(aI != r.end())\n"
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" {\n"
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" if (*aI == 0)\n"
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" {\n"
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" r.insert(aI, 42);\n"
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" if (c)\n"
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" {\n"
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" return;\n"
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" }\n"
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" }\n"
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" ++aI;\n"
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" }\n"
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"}\n");
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TODO_ASSERT_EQUALS("[test.cpp:14] (error) After insert(), the iterator 'aI' may be invalid.", "", errout.str());
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}
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void iterator10() {
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// Ticket #1679
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check("void foo()\n"
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"{\n"
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" std::set<int> s1;\n"
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" std::set<int> s2;\n"
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" for (std::set<int>::iterator it = s1.begin(); it != s1.end(); ++it)\n"
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" {\n"
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" if (true) { }\n"
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" if (it != s2.end()) continue;\n"
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" }\n"
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"}\n");
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ASSERT_EQUALS("[test.cpp:8]: (error) Same iterator is used with different containers 's1' and 's2'.\n", errout.str());
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}
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void iterator11() {
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// Ticket #3433
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check("int main() {\n"
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" map<int, int> myMap;\n"
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" vector<string> myVector;\n"
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" for(vector<int>::iterator x = myVector.begin(); x != myVector.end(); x++)\n"
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" myMap.erase(*x);\n"
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"}\n");
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ASSERT_EQUALS("", errout.str());
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}
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void iterator12() {
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// Ticket #3201
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check("void f() {\n"
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" std::map<int, int> map1;\n"
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" std::map<int, int> map2;\n"
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" std::map<int, int>::const_iterator it = map1.find(123);\n"
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" if (it == map2.end()) { }"
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"}\n");
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ASSERT_EQUALS("[test.cpp:5]: (error) Same iterator is used with different containers 'map1' and 'map2'.\n", errout.str());
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check("void f(std::string &s) {\n"
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" int pos = s.find(x);\n"
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" s.erase(pos);\n"
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" s.erase(pos);\n"
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"}");
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ASSERT_EQUALS("", errout.str());
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}
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void iterator13() {
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check("void f() {\n"
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" std::vector<int> a;\n"
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" std::vector<int> t;\n"
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" std::vector<int>::const_iterator it;\n"
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" it = a.begin();\n"
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" while (it!=a.end())\n"
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" v++it;\n"
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" it = t.begin();\n"
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" while (it!=a.end())\n"
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" ++it;\n"
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"}");
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ASSERT_EQUALS("[test.cpp:9]: (error) Same iterator is used with different containers 't' and 'a'.\n", errout.str());
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// #4062
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check("void f() {\n"
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" std::vector<int> a;\n"
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" std::vector<int> t;\n"
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" std::vector<int>::const_iterator it;\n"
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" it = a.begin();\n"
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" while (it!=a.end())\n"
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" v++it;\n"
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" it = t.begin();\n"
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" while (it!=t.end())\n"
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" ++it;\n"
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"}");
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ASSERT_EQUALS("", errout.str());
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check("void f() {\n"
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" std::vector<int> a;\n"
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" std::vector<int> t;\n"
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" std::vector<int>::const_iterator it;\n"
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" if(z)\n"
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" it = a.begin();\n"
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" else\n"
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" it = t.begin();\n"
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" while (z && it!=a.end())\n"
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" v++it;\n"
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" while (!z && it!=t.end())\n"
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" v++it;\n"
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"}");
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ASSERT_EQUALS("", errout.str());
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}
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// Dereferencing invalid pointer
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void dereference() {
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check("void f()\n"
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"{\n"
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" std::vector<int> ints;\n"
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" std::vector<int>::iterator iter;\n"
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" iter = ints.begin() + 2;\n"
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" ints.erase(iter);\n"
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" std::cout << (*iter) << std::endl;\n"
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"}\n");
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ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:6]: (error) Iterator 'iter' used after element has been erased.\n", errout.str());
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}
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void dereference_break() { // #3644
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check("void f(std::vector<int> &ints) {\n"
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" std::vector<int>::iterator iter;\n"
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" for (iter=ints.begin();iter!=ints.end();++iter) {\n"
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" if (*iter == 2) {\n"
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" ints.erase(iter);\n"
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" break;\n"
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" }\n"
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" if (*iter == 3) {\n"
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" ints.erase(iter);\n"
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" break;\n"
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" }\n"
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" }\n"
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"}\n");
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ASSERT_EQUALS("", errout.str());
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}
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void dereference_member() {
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check("void f()\n"
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"{\n"
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" std::map<int, int> ints;\n"
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" std::map<int, int>::iterator iter;\n"
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" iter = ints.begin();\n"
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" ints.erase(iter);\n"
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" std::cout << iter->first << std::endl;\n"
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"}\n");
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ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:6]: (error) Iterator 'iter' used after element has been erased.\n", errout.str());
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// Reverse iterator
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check("void f()\n"
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"{\n"
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" std::map<int, int> ints;\n"
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" std::map<int, int>::reverse_iterator iter;\n"
|
|
" iter = ints.rbegin();\n"
|
|
" ints.erase(iter);\n"
|
|
" std::cout << iter->first << std::endl;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:6]: (error) Iterator 'iter' used after element has been erased.\n", errout.str());
|
|
}
|
|
|
|
|
|
void STLSize() {
|
|
check("void foo()\n"
|
|
"{\n"
|
|
" std::vector<int> foo;\n"
|
|
" for (unsigned int ii = 0; ii <= foo.size(); ++ii)\n"
|
|
" {\n"
|
|
" foo[ii] = 0;\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:6]: (error) When ii==foo.size(), foo[ii] is out of bounds.\n", errout.str());
|
|
|
|
check("void foo(std::vector<int> foo) {\n"
|
|
" for (unsigned int ii = 0; ii <= foo.size(); ++ii) {\n"
|
|
" foo.at(ii) = 0;\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) When ii==foo.size(), foo.at(ii) is out of bounds.\n", errout.str());
|
|
|
|
check("void foo()\n"
|
|
"{\n"
|
|
" std::vector<int> foo;\n"
|
|
" foo.push_back(1);\n"
|
|
" for (unsigned int ii = 0; ii <= foo.size(); ++ii)\n"
|
|
" {\n"
|
|
" }\n"
|
|
" int ii = 0;\n"
|
|
" foo[ii] = 0;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void STLSizeNoErr() {
|
|
{
|
|
check("void foo()\n"
|
|
"{\n"
|
|
" std::vector<int> foo;\n"
|
|
" for (unsigned int ii = 0; ii < foo.size(); ++ii)\n"
|
|
" {\n"
|
|
" foo[ii] = 0;\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
{
|
|
check("void foo()\n"
|
|
"{\n"
|
|
" std::vector<int> foo;\n"
|
|
" for (unsigned int ii = 0; ii <= foo.size(); ++ii)\n"
|
|
" {\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
{
|
|
check("void foo()\n"
|
|
"{\n"
|
|
" std::vector<int> foo;\n"
|
|
" for (unsigned int ii = 0; ii <= foo.size(); ++ii)\n"
|
|
" {\n"
|
|
" if (ii == foo.size())\n"
|
|
" {\n"
|
|
" }\n"
|
|
" else\n"
|
|
" {\n"
|
|
" foo[ii] = 0;\n"
|
|
" }\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
{
|
|
check("void f(const std::map<int,int> &data) {\n"
|
|
" int i = x;"
|
|
" for (int i = 5; i <= data.size(); i++)\n"
|
|
" data[i] = 0;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void erase1() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" for (it = foo.begin(); it != foo.end(); ++it) {\n"
|
|
" foo.erase(it);\n"
|
|
" }\n"
|
|
" for (it = foo.begin(); it != foo.end(); ++it) {\n"
|
|
" foo.erase(it);\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:4]: (error) Iterator 'it' used after element has been erased.\n"
|
|
"[test.cpp:6] -> [test.cpp:7]: (error) Iterator 'it' used after element has been erased.\n", errout.str());
|
|
|
|
check("void f(std::list<int> &ints)\n"
|
|
"{\n"
|
|
" std::list<int>::iterator i = ints.begin();\n"
|
|
" i = ints.erase(i);\n"
|
|
" *i = 0;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
// #2101
|
|
check("void f(vector< list<int> > &ints, unsigned int i)\n"
|
|
"{\n"
|
|
" list<int>::iterator it;\n"
|
|
" for(it = ints[i].begin(); it != ints[i].end(); it++) {\n"
|
|
" if (*it % 2)\n"
|
|
" it = ints[i].erase(it);\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void erase2() {
|
|
check("static void f()\n"
|
|
"{\n"
|
|
" for (iterator it = foo.begin(); it != foo.end(); it = next)\n"
|
|
" {\n"
|
|
" next = it;\n"
|
|
" next++;\n"
|
|
" foo.erase(it);\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void erase3() {
|
|
check("static void f(std::list<abc> &foo)\n"
|
|
"{\n"
|
|
" std::list<abc>::iterator it = foo.begin();\n"
|
|
" foo.erase(it->a);\n"
|
|
" if (it->b);\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void erase4() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int>::iterator it, it2;\n"
|
|
" for (it = foo.begin(); it != i2; ++it)\n"
|
|
" {\n"
|
|
" foo.erase(it);\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4] -> [test.cpp:6]: (error) Iterator 'it' used after element has been erased.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int>::iterator it = foo.begin();\n"
|
|
" for (; it != i2; ++it)\n"
|
|
" {\n"
|
|
" foo.erase(it);\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4] -> [test.cpp:6]: (error) Iterator 'it' used after element has been erased.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int>::iterator it = foo.begin();\n"
|
|
" while (it != i2)\n"
|
|
" {\n"
|
|
" foo.erase(it);\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4] -> [test.cpp:6]: (error) Iterator 'it' used after element has been erased.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int>::iterator it = foo.begin();\n"
|
|
" while (it != i2)\n"
|
|
" {\n"
|
|
" foo.erase(++it);\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4] -> [test.cpp:6]: (error) Iterator 'it' used after element has been erased.\n", errout.str());
|
|
}
|
|
|
|
void erase5() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int> foo;\n"
|
|
" std::list<int>::iterator it;\n"
|
|
" for (it = foo.begin(); it != foo.end(); ++it)\n"
|
|
" {\n"
|
|
" if (*it == 123)\n"
|
|
" foo.erase(it);\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:8]: (error) Iterator 'it' used after element has been erased.\n", errout.str());
|
|
}
|
|
|
|
void erase6() {
|
|
check("void f() {\n"
|
|
" std::vector<int> vec(3);\n"
|
|
" std::vector<int>::iterator it;\n"
|
|
" std::vector<int>::iterator itEnd = vec.end();\n"
|
|
" for (it = vec.begin(); it != itEnd; it = vec.begin(), itEnd = vec.end())\n"
|
|
" {\n"
|
|
" vec.erase(it);\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void eraseBreak() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" for (iterator it = foo.begin(); it != foo.end(); ++it)\n"
|
|
" {\n"
|
|
" foo.erase(it);\n"
|
|
" if (x)"
|
|
" break;\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:5]: (error) Iterator 'it' used after element has been erased.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" for (iterator it = foo.begin(); it != foo.end(); ++it)\n"
|
|
" {\n"
|
|
" if (x) {\n"
|
|
" foo.erase(it);\n"
|
|
" break;\n"
|
|
" }\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(int x)\n"
|
|
"{\n"
|
|
" for (iterator it = foo.begin(); it != foo.end(); ++it)\n"
|
|
" {\n"
|
|
" foo.erase(it);\n"
|
|
" if (x)"
|
|
" return;\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:5]: (error) Iterator 'it' used after element has been erased.\n", errout.str());
|
|
|
|
}
|
|
|
|
void eraseContinue() {
|
|
check("void f(std::vector<int> &ints)\n"
|
|
"{\n"
|
|
" std::vector<int>::iterator it;\n"
|
|
" std::vector<int>::iterator jt = ints.begin();\n"
|
|
" for (it = ints.begin(); it != ints.end(); it = jt) {\n"
|
|
" ++jt;\n"
|
|
" if (*it == 1) {\n"
|
|
" jt = ints.erase(it);\n"
|
|
" continue;\n"
|
|
" }\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void eraseReturn1() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::vector<int> foo;\n"
|
|
" std::vector<int>::iterator it;\n"
|
|
" for (it = foo.begin(); it != foo.end(); ++it)\n"
|
|
" {\n"
|
|
" foo.erase(it);\n"
|
|
" return;\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void eraseReturn2() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::vector<int> foo;\n"
|
|
" std::vector<int>::iterator it;\n"
|
|
" for (it = foo.begin(); it != foo.end(); ++it)\n"
|
|
" {\n"
|
|
" if (*it == 1) {\n"
|
|
" foo.erase(it);\n"
|
|
" return;\n"
|
|
" }\n"
|
|
" else {\n"
|
|
" foo.erase(it);\n"
|
|
" return;\n"
|
|
" }\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void eraseReturn3() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::vector<int> foo;\n"
|
|
" std::vector<int>::iterator it;\n"
|
|
" for (it = foo.begin(); it != foo.end(); ++it)\n"
|
|
" {\n"
|
|
" if (somecondition) {\n"
|
|
" if (*it == 1)\n"
|
|
" foo.erase(it);\n"
|
|
" else\n"
|
|
" *it = 0;\n"
|
|
" return;\n"
|
|
" }\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::vector<int> foo;\n"
|
|
" std::vector<int>::iterator it;\n"
|
|
" for (it = foo.begin(); it != foo.end(); ++it)\n"
|
|
" {\n"
|
|
" if (a) {\n"
|
|
" if (b)\n"
|
|
" foo.erase(it);\n"
|
|
" else\n"
|
|
" *it = 0;\n"
|
|
" }\n"
|
|
" }\n"
|
|
"}\n");
|
|
TODO_ASSERT_EQUALS("[test.cpp:9]: (error) Dangerous iterator usage after erase()-method.\n", "", errout.str());
|
|
}
|
|
|
|
void eraseGoto() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" for (iterator it = foo.begin(); it != foo.end(); ++it)\n"
|
|
" {\n"
|
|
" foo.erase(it);\n"
|
|
" goto abc;\n"
|
|
" }\n"
|
|
"bar:\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void eraseAssign1() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" for (iterator it = foo.begin(); it != foo.end(); ++it)\n"
|
|
" {\n"
|
|
" foo.erase(it);\n"
|
|
" it = foo.begin();\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void eraseAssign2() {
|
|
check("void f(list<int> &ints)\n"
|
|
"{\n"
|
|
" for (list<int>::iterator it = ints.begin(); it != ints.end();) {\n"
|
|
" if (*it == 123) {\n"
|
|
" list<int>::iterator copy = it;\n"
|
|
" ++copy;\n"
|
|
" ints.erase(it);\n"
|
|
" it = copy;\n"
|
|
" } else {\n"
|
|
" it->second = 123;\n"
|
|
" ++it;\n"
|
|
" }\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void eraseAssign3() {
|
|
check("void f(std::list<list<int> >& l) {\n"
|
|
" std::list<std::list<int> >::const_iterator i = l.begin();\n"
|
|
" std::list<int>::const_iterator j = (*i).begin();\n"
|
|
" cout << *j << endl;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void eraseAssignByFunctionCall() {
|
|
check("void f(std::list<list<int> >& l) {\n"
|
|
" std::list<foo>::const_iterator i;\n"
|
|
" bar(i);\n"
|
|
" cout << *i;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void eraseErase() {
|
|
check("void f(std::vector<ints> &ints)\n"
|
|
"{\n"
|
|
" std::vector<int>::iterator iter;\n"
|
|
" iter = ints.begin() + 2;\n"
|
|
" ints.erase(iter);\n"
|
|
" ints.erase(iter);\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:6]: (error) Invalid iterator: iter\n", errout.str());
|
|
}
|
|
|
|
void eraseByValue() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::set<int> foo;\n"
|
|
" for (std::set<int>::iterator it = foo.begin(); it != foo.end(); ++it)\n"
|
|
" {\n"
|
|
" foo.erase(*it);\n"
|
|
" }\n"
|
|
"}\n");
|
|
TODO_ASSERT_EQUALS("[test.cpp:6]: (error) Iterator 'it' becomes invalid when deleted by value from 'foo'\n", "", errout.str());
|
|
|
|
check("int f(std::set<int> foo) {\n"
|
|
" std::set<int>::iterator it = foo.begin();\n"
|
|
" foo.erase(*it);\n"
|
|
" return *it;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:4] -> [test.cpp:3]: (error) Iterator 'it' used after element has been erased.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::set<int> foo;\n"
|
|
" std::set<int>::iterator it = foo.begin();\n"
|
|
" foo.erase(*it);\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
|
|
void pushback1() {
|
|
check("void f(const std::vector<int> &foo)\n"
|
|
"{\n"
|
|
" std::vector<int>::const_iterator it = foo.begin();\n"
|
|
" foo.push_back(123);\n"
|
|
" *it;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) After push_back(), the iterator 'it' may be invalid.\n", errout.str());
|
|
}
|
|
|
|
void pushback2() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::vector<int>::const_iterator it = foo.begin();\n"
|
|
" foo.push_back(123);\n"
|
|
" {\n"
|
|
" int *it = &foo[0];\n"
|
|
" *it = 456;\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void pushback3() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::vector<int> foo;\n"
|
|
" foo.push_back(10);\n"
|
|
" std::vector<int>::iterator it;\n"
|
|
" for (it = foo.begin(); it != foo.end(); ++it)\n"
|
|
" {\n"
|
|
" foo.push_back(123);\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:8]: (error) After push_back(), the iterator 'it' may be invalid.\n", errout.str());
|
|
}
|
|
|
|
void pushback4() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::vector<int> ints;\n"
|
|
" ints.push_back(1);\n"
|
|
" int *first = &ints[0];\n"
|
|
" ints.push_back(2);\n"
|
|
" *first;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:7]: (error) Invalid pointer 'first' after push_back().\n", errout.str());
|
|
}
|
|
|
|
void pushback5() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::vector<int>::const_iterator i;\n"
|
|
"\n"
|
|
" for (i=v.begin(); i!=v.end(); ++i)\n"
|
|
" {\n"
|
|
" }\n"
|
|
"\n"
|
|
" for (i=rhs.v.begin(); i!=rhs.v.end(); ++i)\n"
|
|
" {\n"
|
|
" v.push_back(*i);\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void pushback6() {
|
|
// ticket #735
|
|
check("void f()\n"
|
|
"{\n"
|
|
" vector<int> v;\n"
|
|
" vector.push_back(1);\n"
|
|
" vector.push_back(2);\n"
|
|
" for (vector<int>::iterator it = v.begin(); it != v.end(); ++it)\n"
|
|
" {\n"
|
|
" if (*it == 1)\n"
|
|
" v.push_back(10);\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:9]: (error) After push_back(), the iterator 'it' may be invalid.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::vector<int> v;\n"
|
|
" vector.push_back(1);\n"
|
|
" vector.push_back(2);\n"
|
|
" for (std::vector<int>::iterator it = v.begin(); it != v.end(); ++it)\n"
|
|
" {\n"
|
|
" if (*it == 1)\n"
|
|
" v.push_back(10);\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:9]: (error) After push_back(), the iterator 'it' may be invalid.\n", errout.str());
|
|
}
|
|
|
|
void pushback7() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::vector<int> foo;\n"
|
|
" foo.push_back(10);\n"
|
|
" std::vector<int>::iterator it;\n"
|
|
" for (it = foo.begin(); it != foo.end(); it++)\n"
|
|
" {\n"
|
|
" foo.push_back(123);\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:8]: (error) After push_back(), the iterator 'it' may be invalid.\n", errout.str());
|
|
}
|
|
|
|
void pushback8() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::vector<int> ints;\n"
|
|
" std::vector<int>::const_iterator end = ints.end();\n"
|
|
" ints.push_back(10);\n"
|
|
" std::vector<int>::iterator it;\n"
|
|
" unsigned int sum = 0;\n"
|
|
" for (it = ints.begin(); it != end; ++it)\n"
|
|
" {\n"
|
|
" sum += *it;\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:8]: (error) After push_back(), the iterator 'end' may be invalid.\n", errout.str());
|
|
}
|
|
|
|
void pushback9() {
|
|
check("struct A {\n"
|
|
" std::vector<int> ints;\n"
|
|
"};\n"
|
|
"\n"
|
|
"void f()\n"
|
|
"{\n"
|
|
" std::vector<int> ints;\n"
|
|
" A a;\n"
|
|
" std::vector<int>::const_iterator i = ints.begin();\n"
|
|
" std::vector<int>::const_iterator e = ints.end();\n"
|
|
" while (i != e)\n"
|
|
" {\n"
|
|
" a.ints.push_back(*i);\n"
|
|
" ++i;\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void pushback10() {
|
|
check("void f(std::vector<int> &foo)\n"
|
|
"{\n"
|
|
" std::vector<int>::const_iterator it = foo.begin();\n"
|
|
" foo.reserve(100);\n"
|
|
" *it = 0;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) After reserve(), the iterator 'it' may be invalid.\n", errout.str());
|
|
|
|
// in loop
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::vector<int> foo;\n"
|
|
" foo.push_back(10);\n"
|
|
" std::vector<int>::iterator it;\n"
|
|
" for (it = foo.begin(); it != foo.end(); ++it)\n"
|
|
" {\n"
|
|
" foo.reserve(123);\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:8]: (error) After reserve(), the iterator 'it' may be invalid.\n", errout.str());
|
|
}
|
|
|
|
void pushback11() {
|
|
// #2798
|
|
check("void f() {\n"
|
|
" std::vector<int> ints;\n"
|
|
" std::vector<int>::iterator it = ints.begin();\n"
|
|
" if (it == ints.begin()) {\n"
|
|
" ints.push_back(0);\n"
|
|
" } else {\n"
|
|
" ints.insert(it,0);\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void pushback12() {
|
|
// #4197
|
|
check("void foo(double s)\n"
|
|
"{\n"
|
|
" std::vector<double> vec;\n"
|
|
" for( std::vector<double>::iterator it = vec.begin(); it != vec.end(); ++it )\n"
|
|
" {\n"
|
|
" vec.insert( it, s );\n"
|
|
" for(unsigned int i = 0; i < 42; i++)\n"
|
|
" {}\n"
|
|
" *it;\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:6]: (error) After insert(), the iterator 'it' may be invalid.\n"
|
|
"[test.cpp:9]: (error) After insert(), the iterator 'it' may be invalid.\n", errout.str());
|
|
}
|
|
|
|
void insert1() {
|
|
check("void f(std::vector<int> &ints)\n"
|
|
"{\n"
|
|
" std::vector<int>::iterator iter = ints.begin() + 5;\n"
|
|
" ints.insert(ints.begin(), 1);\n"
|
|
" ++iter;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) After insert(), the iterator 'iter' may be invalid.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::vector<int> ints;\n"
|
|
" std::vector<int>::iterator iter = ints.begin();\n"
|
|
" ints.insert(iter, 1);\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::vector<int> ints;\n"
|
|
" std::vector<int>::iterator iter = ints.begin();\n"
|
|
" ints.insert(iter, 1);\n"
|
|
" ints.insert(iter, 2);\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:6]: (error) After insert(), the iterator 'iter' may be invalid.\n", errout.str());
|
|
|
|
check("void* f(const std::vector<Bar>& bars) {\n"
|
|
" std::vector<Bar>::iterator i = bars.begin();\n"
|
|
" bars.insert(Bar());\n"
|
|
" void* v = &i->foo;\n"
|
|
" return v;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) After insert(), the iterator 'i' may be invalid.\n", errout.str());
|
|
|
|
check("Foo f(const std::vector<Bar>& bars) {\n"
|
|
" std::vector<Bar>::iterator i = bars.begin();\n"
|
|
" bars.insert(Bar());\n"
|
|
" return i->foo;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) After insert(), the iterator 'i' may be invalid.\n", errout.str());
|
|
}
|
|
|
|
void insert2() {
|
|
// Ticket: #2169
|
|
check("void f(std::vector<int> &vec) {\n"
|
|
" for(std::vector<int>::iterator iter = vec.begin(); iter != vec.end(); ++iter)\n"
|
|
" {\n"
|
|
" vec.insert(iter, 0);\n"
|
|
" break;\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(std::vector<int> &vec) {\n"
|
|
" for(std::vector<int>::iterator iter = vec.begin(); iter != vec.end(); ++iter)\n"
|
|
" {\n"
|
|
" if (*it == 0) {\n"
|
|
" vec.insert(iter, 0);\n"
|
|
" return;\n"
|
|
" }\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void invalidcode() {
|
|
errout.str("");
|
|
const std::string src = "void f()\n"
|
|
"{\n"
|
|
" for (\n"
|
|
"}\n";
|
|
|
|
Settings settings;
|
|
Tokenizer tokenizer(&settings, this);
|
|
std::istringstream istr(src);
|
|
ASSERT_EQUALS(false, tokenizer.tokenize(istr, "test.cpp"));
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Invalid number of character (() when these macros are defined: ''.\n", errout.str());
|
|
}
|
|
|
|
|
|
|
|
void stlBoundries1() {
|
|
const int STL_CONTAINER_LIST = 9;
|
|
const std::string stlCont[STL_CONTAINER_LIST] = {
|
|
"deque", "list", "set", "multiset", "map",
|
|
"multimap", "hash_map", "hash_multimap", "hash_set"
|
|
};
|
|
|
|
for (int i = 0; i < STL_CONTAINER_LIST; ++i) {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::" + stlCont[i] + "<int>::iterator it;\n"
|
|
" for (it = ab.begin(); it < ab.end(); ++it)\n"
|
|
" ;\n"
|
|
"}\n");
|
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Dangerous iterator comparison using operator< on 'std::" + stlCont[i] + "'.\n", errout.str());
|
|
}
|
|
|
|
check("void f() {\n"
|
|
" std::forward_list<int>::iterator it;\n"
|
|
" for (it = ab.begin(); ab.end() > it; ++it) {}\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Dangerous iterator comparison using operator< on 'std::forward_list'.\n", errout.str());
|
|
}
|
|
|
|
void stlBoundries2() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::vector<std::string> files;\n"
|
|
" std::vector<std::string>::const_iterator it;\n"
|
|
" for (it = files.begin(); it < files.end(); it++) { }\n"
|
|
" for (it = files.begin(); it < files.end(); it++) { };\n"
|
|
"}\n");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void stlBoundries3() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" set<int> files;\n"
|
|
" set<int>::const_iterator current;\n"
|
|
" for (current = files.begin(); current != files.end(); ++current)\n"
|
|
" {\n"
|
|
" assert(*current < 100)\n"
|
|
" }\n"
|
|
"}\n");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("bool f() {\n"
|
|
" static set<Foo>::const_iterator current;\n"
|
|
" return 25 > current->bar;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Invalid iterator 'current' used.\n", errout.str());
|
|
}
|
|
|
|
void stlBoundries4() {
|
|
|
|
check("void f() {\n"
|
|
" std::forward_list<std::vector<std::vector<int>>>::iterator it;\n"
|
|
" for (it = ab.begin(); ab.end() > it; ++it) {}\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Dangerous iterator comparison using operator< on 'std::forward_list'.\n", errout.str());
|
|
|
|
// don't crash
|
|
check("void f() {\n"
|
|
" if (list < 0) ;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f() {\n"
|
|
" if (list < 0) {\n"
|
|
" std::forward_list<std::vector<std::vector<int>>>::iterator it;\n"
|
|
" for (it = ab.begin(); ab.end() > it; ++it) {}\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Dangerous iterator comparison using operator< on 'std::forward_list'.\n", errout.str());
|
|
}
|
|
|
|
|
|
void if_find() {
|
|
// ---------------------------
|
|
// set::find
|
|
// ---------------------------
|
|
|
|
// error (simple)
|
|
check("void f(std::set<int> s)\n"
|
|
"{\n"
|
|
" if (s.find(12)) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (warning) Suspicious condition. The result of find() is an iterator, but it is not properly checked.\n", errout.str());
|
|
|
|
// error (pointer)
|
|
check("void f(std::set<int> *s)\n"
|
|
"{\n"
|
|
" if (*s.find(12)) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (warning) Suspicious condition. The result of find() is an iterator, but it is not properly checked.\n", errout.str());
|
|
|
|
// error (array-like pointer)
|
|
check("void f(std::set<int> *s)\n"
|
|
"{\n"
|
|
" if (s[0].find(12)) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (warning) Suspicious condition. The result of find() is an iterator, but it is not properly checked.\n", errout.str());
|
|
|
|
// error (array)
|
|
check("void f(std::set<int> s [10])\n"
|
|
"{\n"
|
|
" if (s[0].find(12)) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (warning) Suspicious condition. The result of find() is an iterator, but it is not properly checked.\n", errout.str());
|
|
|
|
// error (undefined length array)
|
|
check("void f(std::set<int> s [])\n"
|
|
"{\n"
|
|
" if (s[0].find(12)) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (warning) Suspicious condition. The result of find() is an iterator, but it is not properly checked.\n", errout.str());
|
|
|
|
// error (vector)
|
|
check("void f(std::vector<std::set<int> > s)\n"
|
|
"{\n"
|
|
" if (s[0].find(12)) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (warning) Suspicious condition. The result of find() is an iterator, but it is not properly checked.\n", errout.str());
|
|
|
|
// ok (simple)
|
|
check("void f(std::set<int> s)\n"
|
|
"{\n"
|
|
" if (s.find(123) != s.end()) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
// ok (pointer)
|
|
check("void f(std::set<int> *s)\n"
|
|
"{\n"
|
|
" if (*s.find(12) != s.end()) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
// ok (array-like pointer)
|
|
check("void f(std::set<int> *s)\n"
|
|
"{\n"
|
|
" if (s[0].find(12) != s.end()) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
// ok (array)
|
|
check("void f(std::set<int> s [10])\n"
|
|
"{\n"
|
|
" if (s[0].find(123) != s.end()) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
// ok (undefined length array)
|
|
check("void f(std::set<int> s [])\n"
|
|
"{\n"
|
|
" if (s[0].find(123) != s.end()) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
// ok (vector)
|
|
check("void f(std::vector<std::set<int> > s)\n"
|
|
"{\n"
|
|
" if (s[0].find(123) != s.end()) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
// ---------------------------
|
|
// std::find
|
|
// ---------------------------
|
|
|
|
// error
|
|
check("void f()\n"
|
|
"{\n"
|
|
" if (std::find(a,b,c)) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (warning) Suspicious condition. The result of find() is an iterator, but it is not properly checked.\n", errout.str());
|
|
|
|
// ok
|
|
check("void f()\n"
|
|
"{\n"
|
|
" if (std::find(a,b,c) != c) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
// #3714 - segmentation fault for syntax error
|
|
check("void f() {\n"
|
|
" if (()) { }\n"
|
|
"}");
|
|
|
|
// #3865
|
|
check("void f() {\n"
|
|
" if ((std::find(a,b,c)) != b) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void if_str_find() {
|
|
// error (simple)
|
|
check("void f(const std::string &s)\n"
|
|
"{\n"
|
|
" if (s.find(\"abc\")) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (performance) Inefficient usage of string::find() in condition; string::compare() would be faster.\n", errout.str());
|
|
|
|
// error (pointer)
|
|
check("void f(const std::string *s)\n"
|
|
"{\n"
|
|
" if (*s.find(\"abc\")) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (performance) Inefficient usage of string::find() in condition; string::compare() would be faster.\n", errout.str());
|
|
|
|
// error (vector)
|
|
check("void f(const std::vector<std::string> &s)\n"
|
|
"{\n"
|
|
" if (s[0].find(\"abc\")) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (performance) Inefficient usage of string::find() in condition; string::compare() would be faster.\n", errout.str());
|
|
|
|
// #3162
|
|
check("void f(const std::string& s1, const std::string& s2)\n"
|
|
"{\n"
|
|
" if ((!s1.empty()) && (0 == s1.find(s2))) { }\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (performance) Inefficient usage of string::find() in condition; string::compare() would be faster.\n", errout.str());
|
|
|
|
// #4102
|
|
check("void f(const std::string &define) {\n"
|
|
" if (define.find(\"=\") + 1U == define.size());\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
|
|
void size1() {
|
|
check("struct Fred {\n"
|
|
" void foo();\n"
|
|
" std::list<int> x;\n"
|
|
"};\n"
|
|
"void Fred::foo()\n"
|
|
"{\n"
|
|
" if (x.size() == 0) {}\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:7]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
|
|
check("std::list<int> x;\n"
|
|
"void f()\n"
|
|
"{\n"
|
|
" if (x.size() == 0) {}\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int> x;\n"
|
|
" if (x.size() == 0) {}\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int> x;\n"
|
|
" if (0 == x.size()) {}\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int> x;\n"
|
|
" if (x.size() != 0) {}\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int> x;\n"
|
|
" if (0 != x.size()) {}\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int> x;\n"
|
|
" if (x.size() > 0) {}\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int> x;\n"
|
|
" if (0 < x.size()) {}\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int> x;\n"
|
|
" if (x.size() >= 1) {}\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int> x;\n"
|
|
" if (x.size() < 1) {}\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int> x;\n"
|
|
" if (1 <= x.size()) {}\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int> x;\n"
|
|
" if (1 > x.size()) {}\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int> x;\n"
|
|
" if (x.size()) {}\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int> x;\n"
|
|
" if (!x.size()) {}\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int> x;\n"
|
|
" fun(x.size());\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int> x;\n"
|
|
" fun(!x.size());\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::list<int> x;\n"
|
|
" fun(a && x.size());\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
|
|
check("void f() {\n" // #4039
|
|
" std::list<int> x;\n"
|
|
" fun(width % x.size() != 0);\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void redundantCondition1() {
|
|
check("void f(string haystack)\n"
|
|
"{\n"
|
|
" if (haystack.find(needle) != haystack.end())\n"
|
|
" haystack.remove(needle);"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (style) Redundant checking of STL container element existence before removing it.\n", errout.str());
|
|
}
|
|
|
|
void size2() {
|
|
check("struct Fred {\n"
|
|
" std::list<int> x;\n"
|
|
"};\n"
|
|
"struct Wilma {\n"
|
|
" Fred f;\n"
|
|
" void foo();\n"
|
|
"};\n"
|
|
"void Wilma::foo()\n"
|
|
"{\n"
|
|
" if (f.x.size() == 0) {}\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:10]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
}
|
|
|
|
void size3() {
|
|
check("namespace N {\n"
|
|
" class Zzz {\n"
|
|
" public:\n"
|
|
" std::list<int> x;\n"
|
|
" };\n"
|
|
"}\n"
|
|
"using namespace N;\n"
|
|
"Zzz * zzz;\n"
|
|
"int main() {\n"
|
|
" if (zzz->x.size() > 0) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:10]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
|
|
check("namespace N {\n"
|
|
" class Zzz {\n"
|
|
" public:\n"
|
|
" std::list<int> x;\n"
|
|
" };\n"
|
|
"}\n"
|
|
"using namespace N;\n"
|
|
"int main() {\n"
|
|
" Zzz * zzz;\n"
|
|
" if (zzz->x.size() > 0) { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:10]: (performance) Possible inefficient checking for 'x' emptiness.\n", errout.str());
|
|
}
|
|
|
|
void redundantCondition2() {
|
|
check("void f(string haystack)\n"
|
|
"{\n"
|
|
" if (haystack.find(needle) != haystack.end())\n"
|
|
" {\n"
|
|
" haystack.remove(needle);\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (style) Redundant checking of STL container element existence before removing it.\n", errout.str());
|
|
}
|
|
|
|
void missingInnerComparison1() {
|
|
check("void f(std::set<int> &ints) {\n"
|
|
" for (std::set<int>::iterator it = ints.begin(); it != ints.end(); ++it) {\n"
|
|
" if (a) {\n"
|
|
" it++;\n"
|
|
" }\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4] -> [test.cpp:2]: (warning) Missing bounds check for extra iterator increment in loop.\n", errout.str());
|
|
|
|
check("void f(std::map<int,int> &ints) {\n"
|
|
" for (std::map<int,int>::iterator it = ints.begin(); it != ints.end(); ++it) {\n"
|
|
" ++it->second;\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void missingInnerComparison2() {
|
|
check("void f(std::set<int> &ints) {\n"
|
|
" for (std::set<int>::iterator it = ints.begin(); it != ints.end(); ++it) {\n"
|
|
" if (a) {\n"
|
|
" it++;\n"
|
|
" if (it == ints.end())\n"
|
|
" return;\n"
|
|
" }\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void missingInnerComparison3() {
|
|
check("void f(std::set<int> &ints) {\n"
|
|
" for (std::set<int>::iterator it = ints.begin(); it != ints.end(); ++it) {\n"
|
|
" for (std::set<int>::iterator it = ints2.begin(); it != ints2.end(); ++it)\n"
|
|
" { }\n"
|
|
" }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void missingInnerComparison4() {
|
|
check("function f1(std::list<int> &l1) {\n"
|
|
" for(std::list<int>::iterator i = l1.begin(); i != l1.end(); i++) {\n"
|
|
" if (*i == 44) {\n"
|
|
" l1.insert(++i, 55);\n"
|
|
" break;\n"
|
|
" }\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("function f1(std::list<int> &l1) {\n"
|
|
" for(std::list<int>::iterator i = l1.begin(); i != l1.end(); i++) {\n"
|
|
" if (*i == 44) {\n"
|
|
" l1.insert(++i, 55);\n"
|
|
" return;\n"
|
|
" }\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void missingInnerComparison5() {
|
|
check("void f() {\n"
|
|
" for(it = map1.begin(); it != map1.end(); it++) {\n"
|
|
" str[i++] = (*it).first;\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void missingInnerComparison6() {
|
|
check("void f(std::string &s) {\n"
|
|
" for(string::iterator it = s.begin(); it != s.end(); it++) {\n"
|
|
" it = s.insert(++it, 0);\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void cstr() {
|
|
check("void f() {\n"
|
|
" std::string errmsg;\n"
|
|
" throw errmsg.c_str();\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Dangerous usage of c_str(). The value returned by c_str() is invalid after throwing exception.\n", errout.str());
|
|
|
|
check("const char *get_msg() {\n"
|
|
" std::string errmsg;\n"
|
|
" return errmsg.c_str();\n"
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Dangerous usage of c_str(). The value returned by c_str() is invalid after this call.\n", errout.str());
|
|
|
|
check("const char *get_msg() {\n"
|
|
" std::ostringstream errmsg;\n"
|
|
" return errmsg.str().c_str();\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Dangerous usage of c_str(). The value returned by c_str() is invalid after this call.\n", errout.str());
|
|
|
|
check("const char *get_msg() {\n"
|
|
" std::string errmsg;\n"
|
|
" return std::string(\"ERROR: \" + errmsg).c_str();\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Dangerous usage of c_str(). The value returned by c_str() is invalid after this call.\n", errout.str());
|
|
|
|
check("const char *get_msg() {\n"
|
|
" std::string errmsg;\n"
|
|
" return (\"ERROR: \" + errmsg).c_str();\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Dangerous usage of c_str(). The value returned by c_str() is invalid after this call.\n", errout.str());
|
|
|
|
check("const char *get_msg() {\n"
|
|
" std::string errmsg;\n"
|
|
" return (\"ERROR: \" + std::string(\"crash me\")).c_str();\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Dangerous usage of c_str(). The value returned by c_str() is invalid after this call.\n", errout.str());
|
|
|
|
check("void f() {\n"
|
|
" std::ostringstream errmsg;\n"
|
|
" const char *c = errmsg.str().c_str();\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Dangerous usage of c_str(). The value returned by c_str() is invalid after this call.\n", errout.str());
|
|
|
|
check("std::string f();\n"
|
|
"\n"
|
|
"void foo() {\n"
|
|
" const char *c = f().c_str();\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Dangerous usage of c_str(). The value returned by c_str() is invalid after this call.\n", errout.str());
|
|
|
|
check("class Foo {\n"
|
|
" const char *f();\n"
|
|
"};\n"
|
|
"const char *Foo::f() {\n"
|
|
" std::string s;\n"
|
|
" return s.c_str();\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:6]: (error) Dangerous usage of c_str(). The value returned by c_str() is invalid after this call.\n", errout.str());
|
|
|
|
check("const char* foo() {\n"
|
|
" static std::string text;\n"
|
|
" text = \"hello world\n\";\n"
|
|
" return text.c_str();\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str()); // #3427
|
|
|
|
// Implicit conversion back to std::string
|
|
check("std::string get_msg() {\n"
|
|
" std::string errmsg;\n"
|
|
" return errmsg.c_str();\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (performance) Returning the result of c_str() in a function that returns std::string is slow and redundant.\n", errout.str());
|
|
|
|
check("const std::string& get_msg() {\n"
|
|
" std::string errmsg;\n"
|
|
" return errmsg.c_str();\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (performance) Returning the result of c_str() in a function that returns std::string is slow and redundant.\n", errout.str());
|
|
|
|
check("std::string get_msg() {\n"
|
|
" std::string errmsg;\n"
|
|
" return errmsg;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("std::string get_msg() {\n" // #3678
|
|
" MyStringClass errmsg;\n"
|
|
" return errmsg.c_str();\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
check("void Foo1(const std::string& str) {}\n"
|
|
"void Foo2(char* c, const std::string str) {}\n"
|
|
"void Foo3(std::string& rstr) {}\n"
|
|
"void Foo4(std::string str, const std::string& str) {}\n"
|
|
"void Bar() {\n"
|
|
" std::string str = \"bar\";\n"
|
|
" Foo1(str);\n"
|
|
" Foo1(str.c_str());\n"
|
|
" Foo2(str.c_str(), str);\n"
|
|
" Foo2(str.c_str(), str.c_str());\n"
|
|
" Foo3(str.c_str());\n"
|
|
" Foo4(str, str);\n"
|
|
" Foo4(str.c_str(), str);\n"
|
|
" Foo4(str, str.c_str());\n"
|
|
" Foo4(str.c_str(), str.c_str());\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:8]: (performance) Passing the result of c_str() to a function that takes std::string as argument no. 1 is slow and redundant.\n"
|
|
"[test.cpp:10]: (performance) Passing the result of c_str() to a function that takes std::string as argument no. 2 is slow and redundant.\n"
|
|
"[test.cpp:13]: (performance) Passing the result of c_str() to a function that takes std::string as argument no. 1 is slow and redundant.\n"
|
|
"[test.cpp:14]: (performance) Passing the result of c_str() to a function that takes std::string as argument no. 2 is slow and redundant.\n"
|
|
"[test.cpp:15]: (performance) Passing the result of c_str() to a function that takes std::string as argument no. 1 is slow and redundant.\n"
|
|
"[test.cpp:15]: (performance) Passing the result of c_str() to a function that takes std::string as argument no. 2 is slow and redundant.\n", errout.str());
|
|
|
|
check("void Foo1(const std::string& str) {}\n"
|
|
"void Foo2(char* c, const std::string str) {}\n"
|
|
"void Bar() {\n"
|
|
" std::string str = \"bar\";\n"
|
|
" Foo1(str, foo);\n" // Don't crash
|
|
" Foo2(str.c_str());\n" // Don't crash
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("struct Foo {\n"
|
|
" void func(std::string str) const {}\n"
|
|
" static void sfunc(std::string str) {}\n"
|
|
"};\n"
|
|
"void func(std::string str) {}\n"
|
|
"void Bar() {\n"
|
|
" std::string str = \"bar\";\n"
|
|
" Foo foo;\n"
|
|
" func(str.c_str());\n"
|
|
" Foo::sfunc(str.c_str());\n"
|
|
" foo.func(str.c_str());\n"
|
|
"}");
|
|
TODO_ASSERT_EQUALS("[test.cpp:9]: (performance) Passing the result of c_str() to a function that takes std::string as argument 1 is slow and redundant.\n"
|
|
"[test.cpp:10]: (performance) Passing the result of c_str() to a function that takes std::string as argument 1 is slow and redundant.\n",
|
|
"", errout.str());
|
|
|
|
check("void svgFile(const std::string &content, const std::string &fileName, const double end = 1000., const double start = 0.);\n"
|
|
"void Bar(std::string filename) {\n"
|
|
" std::string str = \"bar\";\n"
|
|
" std::ofstream svgFile(filename.c_str(), std::ios::trunc);\n"
|
|
" svgFile << \"test\";\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void Foo(const char* p) {}\n"
|
|
"void Foo(const std::string& str) {Foo(str.c_str());}\n" // Overloaded
|
|
"void Bar() {\n"
|
|
" std::string str = \"bar\";\n"
|
|
" Foo(str);\n"
|
|
" Foo(str.c_str());\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("int atoi(const std::string& str) {\n" // #3729: Don't suggest recursive call
|
|
" return atoi(str.c_str());\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("std::string hello()\n"
|
|
"{\n"
|
|
" return \"hello\";\n"
|
|
"}\n"
|
|
"\n"
|
|
"const char *f()\n"
|
|
"{\n"
|
|
" return hello().c_str();\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:8]: (error) Dangerous usage of c_str(). The value returned by c_str() is invalid after this call.\n", errout.str());
|
|
|
|
check("class Fred {\n"
|
|
" std::string hello();\n"
|
|
" const char *f();\n"
|
|
"};\n"
|
|
"std::string Fred::hello()\n"
|
|
"{\n"
|
|
" return \"hello\";\n"
|
|
"}\n"
|
|
"const char *Fred::f()\n"
|
|
"{\n"
|
|
" return hello().c_str();\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:11]: (error) Dangerous usage of c_str(). The value returned by c_str() is invalid after this call.\n", errout.str());
|
|
|
|
// #4183 - using MyStringClass.c_str()
|
|
check("void a(const std::string &str);\n"
|
|
"\n"
|
|
"void b() {\n"
|
|
" MyStringClass s;\n"
|
|
" a(s.c_str());\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void autoPointer() {
|
|
|
|
// ticket 2846
|
|
check("void f()\n"
|
|
"{\n"
|
|
" std::vector<int*> vec;\n"
|
|
" vec.push_back(new int(3));\n"
|
|
" std::auto_ptr<int> ret(vec[0]);\n"
|
|
"};\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
// ticket 2839
|
|
check("template <class MUTEX_TYPE>\n"
|
|
"class Guarded\n"
|
|
"{\n"
|
|
" typedef std::auto_ptr<MUTEX_TYPE > WriteGuardType;\n"
|
|
" virtual WriteGuardType getWriteGuard(bool enabledGuard = true);\n"
|
|
"};\n"
|
|
"class SafeSharedMemory : public Guarded<int>\n"
|
|
"{\n"
|
|
"};\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void foo()\n"
|
|
"{\n"
|
|
" auto_ptr< ns1:::MyClass > y;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" auto_ptr<T> p2;\n"
|
|
" p2 = new T;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void foo()\n"
|
|
"{\n"
|
|
" std::vector< std::auto_ptr< ns1::MyClass> > v;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) You can randomly lose access to pointers if you store 'auto_ptr' pointers in an STL container.\n", errout.str());
|
|
|
|
check("void foo()\n"
|
|
"{\n"
|
|
" std::vector< auto_ptr< MyClass> > v;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) You can randomly lose access to pointers if you store 'auto_ptr' pointers in an STL container.\n", errout.str());
|
|
|
|
check("void foo()\n"
|
|
"{\n"
|
|
" int *i = new int;\n"
|
|
" auto_ptr<int> x(i);\n"
|
|
" auto_ptr<int> y;\n"
|
|
" y = x;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:6]: (style) Copying 'auto_ptr' pointer to another does not create two equal objects since one has lost its ownership of the pointer.\n", errout.str());
|
|
|
|
check("std::auto_ptr<A> function();\n"
|
|
"int quit;"
|
|
"void f() { quit = true; }\n"
|
|
);
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
// ticket #748
|
|
check("void f()\n"
|
|
"{\n"
|
|
" T* var = new T[10];\n"
|
|
" auto_ptr<T> p2( var );\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Object pointed by an 'auto_ptr' is destroyed using operator 'delete'. You should not use 'auto_ptr' for pointers obtained with operator 'new[]'.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" foo::bar::baz* var = new foo::bar::baz[10];\n"
|
|
" auto_ptr<foo::bar::baz> p2( var );\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Object pointed by an 'auto_ptr' is destroyed using operator 'delete'. You should not use 'auto_ptr' for pointers obtained with operator 'new[]'.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" auto_ptr<T> p2( new T[] );\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Object pointed by an 'auto_ptr' is destroyed using operator 'delete'. You should not use 'auto_ptr' for pointers obtained with operator 'new[]'.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" auto_ptr<T> p2( new T[5] );\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Object pointed by an 'auto_ptr' is destroyed using operator 'delete'. You should not use 'auto_ptr' for pointers obtained with operator 'new[]'.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" auto_ptr<foo::bar> p(new foo::bar[10]);\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Object pointed by an 'auto_ptr' is destroyed using operator 'delete'. You should not use 'auto_ptr' for pointers obtained with operator 'new[]'.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" auto_ptr<T> p2;\n"
|
|
" p2.reset( new T[] );\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Object pointed by an 'auto_ptr' is destroyed using operator 'delete'. You should not use 'auto_ptr' for pointers obtained with operator 'new[]'.\n", errout.str());
|
|
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" auto_ptr<T> p2( new T[][] );\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Object pointed by an 'auto_ptr' is destroyed using operator 'delete'. You should not use 'auto_ptr' for pointers obtained with operator 'new[]'.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" auto_ptr<T> p2;\n"
|
|
" p2 = new T[10];\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Object pointed by an 'auto_ptr' is destroyed using operator 'delete'. You should not use 'auto_ptr' for pointers obtained with operator 'new[]'.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" auto_ptr<T::B> p2;\n"
|
|
" p2 = new T::B[10];\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Object pointed by an 'auto_ptr' is destroyed using operator 'delete'. You should not use 'auto_ptr' for pointers obtained with operator 'new[]'.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" auto_ptr<T> p2;\n"
|
|
" p2.reset( new T[10] );\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Object pointed by an 'auto_ptr' is destroyed using operator 'delete'. You should not use 'auto_ptr' for pointers obtained with operator 'new[]'.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" auto_ptr<T::B> p2;\n"
|
|
" p2.reset( new T::B[10] );\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Object pointed by an 'auto_ptr' is destroyed using operator 'delete'. You should not use 'auto_ptr' for pointers obtained with operator 'new[]'.\n", errout.str());
|
|
|
|
// ticket #2887 (infinite loop)
|
|
check("A::A(std::auto_ptr<X> e){}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
// ticket #2967 (segmentation fault)
|
|
check("auto_ptr<x>\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void uselessCalls() {
|
|
check("void f()\n"
|
|
"{\n"
|
|
" string s1, s2;\n"
|
|
" s1.swap(s2);\n"
|
|
" s2.swap(s2);\n"
|
|
"};\n");
|
|
ASSERT_EQUALS("[test.cpp:5]: (performance) It is inefficient to swap a object with itself by calling 's2.swap(s2)'\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" string s1, s2;\n"
|
|
" s1.compare(s2);\n"
|
|
" s2.compare(s2);\n"
|
|
" s1.compare(s2.c_str());\n"
|
|
" s1.compare(0, s1.size(), s1);\n"
|
|
"};\n");
|
|
ASSERT_EQUALS("[test.cpp:5]: (warning) It is inefficient to call 's2.compare(s2)' as it always returns 0.\n", errout.str());
|
|
|
|
check("void f()\n"
|
|
"{\n"
|
|
" int x=1;\n"
|
|
" string s1, s2;\n"
|
|
" s1 = s1.substr();\n"
|
|
" s2 = s1.substr(x);\n"
|
|
" s1 = s2.substr(0, x);\n"
|
|
" s1 = s2.substr(0,std::string::npos);\n"
|
|
" s1 = s2.substr(x+5-n, 0);\n"
|
|
"};\n");
|
|
ASSERT_EQUALS("[test.cpp:5]: (performance) Ineffective call of function \'substr\' because it returns a copy of "
|
|
"the object. Use operator= instead.\n"
|
|
"[test.cpp:8]: (performance) Ineffective call of function \'substr\' because it returns a copy of "
|
|
"the object. Use operator= instead.\n"
|
|
"[test.cpp:9]: (performance) Ineffective call of function \'substr\' because it returns an empty string.\n", errout.str());
|
|
|
|
check("int main()\n"
|
|
"{\n"
|
|
" std::string str = \"a1b1\";\n"
|
|
" return str.find(str[1], 2);\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("bool foo(std::vector<int>& v) {\n"
|
|
" v.empty();\n"
|
|
" return v.empty();\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Ineffective call of function 'empty()'. Did you intend to call 'clear()' instead?\n", errout.str());
|
|
|
|
check("void f() {\n" // #4032
|
|
" const std::string greeting(\"Hello World !!!\");\n"
|
|
" const std::string::size_type npos = greeting.rfind(\" \");\n"
|
|
" if (npos != std::string::npos)\n"
|
|
" std::cout << greeting.substr(0, npos) << std::endl;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f() {\n"
|
|
" std::remove(a.begin(), a.end(), val);\n"
|
|
" std::remove_if(a.begin(), a.end(), val);\n"
|
|
" std::unique(a.begin(), a.end(), val);\n"
|
|
" x = std::remove(a.begin(), a.end(), val);\n"
|
|
" a.erase(std::remove(a.begin(), a.end(), val));\n"
|
|
" std::remove(\"foo.txt\");\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Return value of std::remove() ignored. Elements remain in container.\n"
|
|
"[test.cpp:3]: (warning) Return value of std::remove_if() ignored. Elements remain in container.\n"
|
|
"[test.cpp:4]: (warning) Return value of std::unique() ignored. Elements remain in container.\n", errout.str());
|
|
}
|
|
};
|
|
|
|
REGISTER_TEST(TestStl)
|