7174 lines
291 KiB
C++
7174 lines
291 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2020 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 <tinyxml2.h>
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#include "checkclass.h"
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#include "library.h"
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#include "settings.h"
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#include "testsuite.h"
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#include "tokenize.h"
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class TestClass : public TestFixture {
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public:
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TestClass() : TestFixture("TestClass") {
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}
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private:
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Settings settings0;
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Settings settings1;
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void run() OVERRIDE {
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settings0.addEnabled("style");
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settings1.addEnabled("warning");
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// Load std.cfg configuration
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{
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const char xmldata[] = "<?xml version=\"1.0\"?>\n"
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"<def>\n"
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" <memory>\n"
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" <alloc init=\"false\">malloc</alloc>\n"
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" <dealloc>free</dealloc>\n"
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" </memory>\n"
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" <smart-pointer class-name=\"std::shared_ptr\"/>\n"
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"</def>";
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tinyxml2::XMLDocument doc;
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doc.Parse(xmldata, sizeof(xmldata));
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settings0.library.load(doc);
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settings1.library.load(doc);
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}
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TEST_CASE(virtualDestructor1); // Base class not found => no error
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TEST_CASE(virtualDestructor2); // Base class doesn't have a destructor
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TEST_CASE(virtualDestructor3); // Base class has a destructor, but it's not virtual
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TEST_CASE(virtualDestructor4); // Derived class doesn't have a destructor => no error
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TEST_CASE(virtualDestructor5); // Derived class has empty destructor => no error
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TEST_CASE(virtualDestructor6); // only report error if base class pointer that points at derived class is deleted
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TEST_CASE(virtualDestructorProtected);
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TEST_CASE(virtualDestructorInherited);
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TEST_CASE(virtualDestructorTemplate);
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TEST_CASE(virtualDestructorInconclusive); // ticket # 5807
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TEST_CASE(copyConstructor1);
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TEST_CASE(copyConstructor2); // ticket #4458
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TEST_CASE(copyConstructor3); // defaulted/deleted
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TEST_CASE(copyConstructor4); // base class with private constructor
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TEST_CASE(noOperatorEq); // class with memory management should have operator eq
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TEST_CASE(noDestructor); // class with memory management should have destructor
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TEST_CASE(operatorEqRetRefThis1);
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TEST_CASE(operatorEqRetRefThis2); // ticket #1323
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TEST_CASE(operatorEqRetRefThis3); // ticket #1405
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TEST_CASE(operatorEqRetRefThis4); // ticket #1451
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TEST_CASE(operatorEqRetRefThis5); // ticket #1550
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TEST_CASE(operatorEqRetRefThis6); // ticket #2479
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TEST_CASE(operatorEqRetRefThis7); // ticket #5782 endless recursion
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TEST_CASE(operatorEqToSelf1); // single class
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TEST_CASE(operatorEqToSelf2); // nested class
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TEST_CASE(operatorEqToSelf3); // multiple inheritance
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TEST_CASE(operatorEqToSelf4); // nested class with multiple inheritance
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TEST_CASE(operatorEqToSelf5); // ticket # 1233
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TEST_CASE(operatorEqToSelf6); // ticket # 1550
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TEST_CASE(operatorEqToSelf7);
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TEST_CASE(operatorEqToSelf8); // ticket #2179
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TEST_CASE(operatorEqToSelf9); // ticket #2592
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TEST_CASE(memsetOnStruct);
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TEST_CASE(memsetVector);
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TEST_CASE(memsetOnClass);
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TEST_CASE(memsetOnInvalid); // Ticket #5425: Crash upon invalid
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TEST_CASE(memsetOnStdPodType); // Ticket #5901 - std::uint8_t
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TEST_CASE(memsetOnFloat); // Ticket #5421
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TEST_CASE(memsetOnUnknown); // Ticket #7183
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TEST_CASE(mallocOnClass);
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TEST_CASE(this_subtraction); // warn about "this-x"
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// can member function be made const
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TEST_CASE(const1);
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TEST_CASE(const2);
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TEST_CASE(const3);
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TEST_CASE(const4);
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TEST_CASE(const5); // ticket #1482
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TEST_CASE(const6); // ticket #1491
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TEST_CASE(const7);
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TEST_CASE(const8); // ticket #1517
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TEST_CASE(const9); // ticket #1515
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TEST_CASE(const10); // ticket #1522
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TEST_CASE(const11); // ticket #1529
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TEST_CASE(const12); // ticket #1552
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TEST_CASE(const13); // ticket #1519
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TEST_CASE(const14);
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TEST_CASE(const15);
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TEST_CASE(const16); // ticket #1551
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TEST_CASE(const17); // ticket #1552
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TEST_CASE(const18);
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TEST_CASE(const19); // ticket #1612
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TEST_CASE(const20); // ticket #1602
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TEST_CASE(const21); // ticket #1683
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TEST_CASE(const22);
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TEST_CASE(const23); // ticket #1699
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TEST_CASE(const24); // ticket #1708
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TEST_CASE(const25); // ticket #1724
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TEST_CASE(const26); // ticket #1847
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TEST_CASE(const27); // ticket #1882
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TEST_CASE(const28); // ticket #1883
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TEST_CASE(const29); // ticket #1922
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TEST_CASE(const30);
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TEST_CASE(const31);
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TEST_CASE(const32); // ticket #1905 - member array is assigned
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TEST_CASE(const33);
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TEST_CASE(const34); // ticket #1964
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TEST_CASE(const35); // ticket #2001
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TEST_CASE(const36); // ticket #2003
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TEST_CASE(const37); // ticket #2081 and #2085
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TEST_CASE(const38); // ticket #2135
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TEST_CASE(const39);
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TEST_CASE(const40); // ticket #2228
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TEST_CASE(const41); // ticket #2255
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TEST_CASE(const42); // ticket #2282
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TEST_CASE(const43); // ticket #2377
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TEST_CASE(const44); // ticket #2595
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TEST_CASE(const45); // ticket #2664
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TEST_CASE(const46); // ticket #2636
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TEST_CASE(const47); // ticket #2670
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TEST_CASE(const48); // ticket #2672
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TEST_CASE(const49); // ticket #2795
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TEST_CASE(const50); // ticket #2943
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TEST_CASE(const51); // ticket #3040
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TEST_CASE(const52); // ticket #3048
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TEST_CASE(const53); // ticket #3049
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TEST_CASE(const54); // ticket #3052
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TEST_CASE(const55);
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TEST_CASE(const56); // ticket #3149
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TEST_CASE(const57); // tickets #2669 and #2477
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TEST_CASE(const58); // ticket #2698
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TEST_CASE(const59); // ticket #4646
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TEST_CASE(const60); // ticket #3322
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TEST_CASE(const61); // ticket #5606
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TEST_CASE(const62); // ticket #5701
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TEST_CASE(const63); // ticket #5983
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TEST_CASE(const64); // ticket #6268
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TEST_CASE(const65); // ticket #8693
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TEST_CASE(const66); // ticket #7714
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TEST_CASE(const67); // ticket #9193
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TEST_CASE(const68); // ticket #6471
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TEST_CASE(const_handleDefaultParameters);
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TEST_CASE(const_passThisToMemberOfOtherClass);
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TEST_CASE(assigningPointerToPointerIsNotAConstOperation);
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TEST_CASE(assigningArrayElementIsNotAConstOperation);
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TEST_CASE(constoperator1); // operator< can often be const
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TEST_CASE(constoperator2); // operator<<
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TEST_CASE(constoperator3);
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TEST_CASE(constoperator4);
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TEST_CASE(constoperator5); // ticket #3252
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TEST_CASE(constoperator6); // ticket #8669
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TEST_CASE(constincdec); // increment/decrement => non-const
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TEST_CASE(constassign1);
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TEST_CASE(constassign2);
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TEST_CASE(constincdecarray); // increment/decrement array element => non-const
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TEST_CASE(constassignarray);
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TEST_CASE(constReturnReference);
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TEST_CASE(constDelete); // delete member variable => not const
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TEST_CASE(constLPVOID); // a function that returns LPVOID can't be const
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TEST_CASE(constFunc); // a function that calls const functions can be const
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TEST_CASE(constVirtualFunc);
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TEST_CASE(constIfCfg); // ticket #1881 - fp when there are #if
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TEST_CASE(constFriend); // ticket #1921 - fp for friend function
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TEST_CASE(constUnion); // ticket #2111 - fp when there is a union
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TEST_CASE(constArrayOperator); // #4406
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TEST_CASE(constRangeBasedFor); // #5514
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TEST_CASE(const_shared_ptr);
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TEST_CASE(constPtrToConstPtr);
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TEST_CASE(constTrailingReturnType);
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TEST_CASE(initializerListOrder);
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TEST_CASE(initializerListUsage);
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TEST_CASE(selfInitialization);
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TEST_CASE(virtualFunctionCallInConstructor);
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TEST_CASE(pureVirtualFunctionCall);
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TEST_CASE(pureVirtualFunctionCallOtherClass);
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TEST_CASE(pureVirtualFunctionCallWithBody);
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TEST_CASE(pureVirtualFunctionCallPrevented);
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TEST_CASE(duplInheritedMembers);
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TEST_CASE(explicitConstructors);
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TEST_CASE(copyCtorAndEqOperator);
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TEST_CASE(override1);
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TEST_CASE(overrideCVRefQualifiers);
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TEST_CASE(checkThisUseAfterFree);
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TEST_CASE(unsafeClassRefMember);
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}
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void checkCopyCtorAndEqOperator(const char code[]) {
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// Clear the error log
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errout.str("");
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Settings settings;
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settings.addEnabled("warning");
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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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// Check..
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CheckClass checkClass(&tokenizer, &settings, this);
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checkClass.checkCopyCtorAndEqOperator();
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}
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void copyCtorAndEqOperator() {
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checkCopyCtorAndEqOperator("class A \n"
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"{ \n"
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" A(const A& other) { } \n"
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" A& operator=(const A& other) { return *this; }\n"
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"};");
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ASSERT_EQUALS("", errout.str());
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checkCopyCtorAndEqOperator("class A \n"
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"{ \n"
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"};");
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ASSERT_EQUALS("", errout.str());
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checkCopyCtorAndEqOperator("class A \n"
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"{ \n"
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" A(const A& other) { } \n"
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"};");
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ASSERT_EQUALS("", errout.str());
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checkCopyCtorAndEqOperator("class A \n"
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"{ \n"
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" A& operator=(const A& other) { return *this; }\n"
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"};");
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ASSERT_EQUALS("", errout.str());
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checkCopyCtorAndEqOperator("class A \n"
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"{ \n"
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" A(const A& other) { } \n"
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" int x;\n"
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"};");
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TODO_ASSERT_EQUALS("[test.cpp:1]: (warning) The class 'A' has 'copy constructor' but lack of 'operator='.\n", "", errout.str());
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// TODO the error message should be clarified. It should say something like 'copy constructor is empty and will not assign i and therefore the behaviour is different to the default assignment operator'
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checkCopyCtorAndEqOperator("class A \n"
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"{ \n"
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" A& operator=(const A& other) { return *this; }\n"
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" int x;\n"
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"};");
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TODO_ASSERT_EQUALS("[test.cpp:1]: (warning) The class 'A' has 'operator=' but lack of 'copy constructor'.\n", "", errout.str());
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// TODO the error message should be clarified. It should say something like 'assignment operator does not assign i and therefore the behaviour is different to the default copy constructor'
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checkCopyCtorAndEqOperator("class A \n"
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"{ \n"
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" A& operator=(const int &x) { this->x = x; return *this; }\n"
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" int x;\n"
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"};");
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ASSERT_EQUALS("", errout.str());
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checkCopyCtorAndEqOperator("class A {\n"
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"public:\n"
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" A() : x(0) { }\n"
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" A(const A & a) { x = a.x; }\n"
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" A & operator = (const A & a) {\n"
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" x = a.x;\n"
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" return *this;\n"
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" }\n"
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"private:\n"
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" int x;\n"
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"};\n"
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"class B : public A {\n"
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"public:\n"
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" B() { }\n"
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" B(const B & b) :A(b) { }\n"
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"private:\n"
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" static int i;\n"
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"};");
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ASSERT_EQUALS("", errout.str());
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// #7987 - Don't show warning when there is a move constructor
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checkCopyCtorAndEqOperator("struct S {\n"
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" std::string test;\n"
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" S(S&& s) : test(std::move(s.test)) { }\n"
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" S& operator = (S &&s) {\n"
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||
" test = std::move(s.test);\n"
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" return *this;\n"
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" }\n"
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"};\n");
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ASSERT_EQUALS("", errout.str());
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// #8337 - False positive in copy constructor detection
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checkCopyCtorAndEqOperator("struct StaticListNode {\n"
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" StaticListNode(StaticListNode*& prev) : m_next(0) {}\n"
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" StaticListNode* m_next;\n"
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"};");
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ASSERT_EQUALS("", errout.str());
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}
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||
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void checkExplicitConstructors(const char code[]) {
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// Clear the error log
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errout.str("");
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||
|
||
// Tokenize..
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Tokenizer tokenizer(&settings0, this);
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std::istringstream istr(code);
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tokenizer.tokenize(istr, "test.cpp");
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||
|
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// Check..
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CheckClass checkClass(&tokenizer, &settings0, this);
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checkClass.checkExplicitConstructors();
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}
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|
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void explicitConstructors() {
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checkExplicitConstructors("class Class {\n"
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" Class() = delete;\n"
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" Class(const Class& other) { }\n"
|
||
" Class(Class&& other) { }\n"
|
||
" explicit Class(int i) { }\n"
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||
" explicit Class(const std::string&) { }\n"
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" Class(int a, int b) { }\n"
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"};");
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ASSERT_EQUALS("", errout.str());
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||
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checkExplicitConstructors("class Class {\n"
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||
" Class() = delete;\n"
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" explicit Class(const Class& other) { }\n"
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||
" explicit Class(Class&& other) { }\n"
|
||
" virtual int i() = 0;\n"
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"};");
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ASSERT_EQUALS("", errout.str());
|
||
|
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checkExplicitConstructors("class Class {\n"
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" Class() = delete;\n"
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" Class(const Class& other) = delete;\n"
|
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" Class(Class&& other) = delete;\n"
|
||
" virtual int i() = 0;\n"
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"};");
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ASSERT_EQUALS("", errout.str());
|
||
|
||
checkExplicitConstructors("class Class {\n"
|
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" Class(int i) { }\n"
|
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"};");
|
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ASSERT_EQUALS("[test.cpp:2]: (style) Class 'Class' has a constructor with 1 argument that is not explicit.\n", errout.str());
|
||
|
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checkExplicitConstructors("class Class {\n"
|
||
" Class(const Class& other) { }\n"
|
||
" virtual int i() = 0;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkExplicitConstructors("class Class {\n"
|
||
" Class(Class&& other) { }\n"
|
||
" virtual int i() = 0;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// #6585
|
||
checkExplicitConstructors("class Class {\n"
|
||
" private: Class(const Class&);\n"
|
||
" virtual int i() = 0;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkExplicitConstructors("class Class {\n"
|
||
" public: Class(const Class&);\n"
|
||
" virtual int i() = 0;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// #7465: Error properly reported in templates
|
||
checkExplicitConstructors("template <class T> struct Test {\n"
|
||
" Test(int) : fData(0) {}\n"
|
||
" T fData;\n"
|
||
"};\n"
|
||
"int main() {\n"
|
||
" Test <int> test;\n"
|
||
" return 0;\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:2]: (style) Struct 'Test < int >' has a constructor with 1 argument that is not explicit.\n", errout.str());
|
||
|
||
// #7465: No error for copy or move constructors
|
||
checkExplicitConstructors("template <class T> struct Test {\n"
|
||
" Test() : fData(0) {}\n"
|
||
" Test (const Test<T>& aOther) : fData(aOther.fData) {}\n"
|
||
" Test (Test<T>&& aOther) : fData(std::move(aOther.fData)) {}\n"
|
||
" T fData;\n"
|
||
"};\n"
|
||
"int main() {\n"
|
||
" Test <int> test;\n"
|
||
" return 0;\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// #8600
|
||
checkExplicitConstructors("struct A { struct B; };\n"
|
||
"struct A::B {\n"
|
||
" B() = default;\n"
|
||
" B(const B&) {}\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkExplicitConstructors("struct A{"
|
||
" A(int, int y=2) {}"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:1]: (style) Struct 'A' has a constructor with 1 argument that is not explicit.\n", errout.str());
|
||
}
|
||
|
||
void checkDuplInheritedMembers(const char code[]) {
|
||
// Clear the error log
|
||
errout.str("");
|
||
|
||
// Tokenize..
|
||
Tokenizer tokenizer(&settings1, this);
|
||
std::istringstream istr(code);
|
||
tokenizer.tokenize(istr, "test.cpp");
|
||
|
||
// Check..
|
||
CheckClass checkClass(&tokenizer, &settings1, this);
|
||
checkClass.checkDuplInheritedMembers();
|
||
}
|
||
|
||
void duplInheritedMembers() {
|
||
checkDuplInheritedMembers("class Base {\n"
|
||
" int x;\n"
|
||
"};\n"
|
||
"struct Derived : Base {\n"
|
||
" int x;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkDuplInheritedMembers("class Base {\n"
|
||
" protected:\n"
|
||
" int x;\n"
|
||
"};\n"
|
||
"struct Derived : Base {\n"
|
||
" int x;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:6]: (warning) The struct 'Derived' defines member variable with name 'x' also defined in its parent class 'Base'.\n", errout.str());
|
||
|
||
checkDuplInheritedMembers("class Base {\n"
|
||
" protected:\n"
|
||
" int x;\n"
|
||
"};\n"
|
||
"struct Derived : public Base {\n"
|
||
" int x;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:6]: (warning) The struct 'Derived' defines member variable with name 'x' also defined in its parent class 'Base'.\n", errout.str());
|
||
|
||
checkDuplInheritedMembers("class Base0 {\n"
|
||
" int x;\n"
|
||
"};\n"
|
||
"class Base1 {\n"
|
||
" int x;\n"
|
||
"};\n"
|
||
"struct Derived : Base0, Base1 {\n"
|
||
" int x;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkDuplInheritedMembers("class Base0 {\n"
|
||
" protected:\n"
|
||
" int x;\n"
|
||
"};\n"
|
||
"class Base1 {\n"
|
||
" int x;\n"
|
||
"};\n"
|
||
"struct Derived : Base0, Base1 {\n"
|
||
" int x;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:9]: (warning) The struct 'Derived' defines member variable with name 'x' also defined in its parent class 'Base0'.\n", errout.str());
|
||
|
||
checkDuplInheritedMembers("class Base0 {\n"
|
||
" protected:\n"
|
||
" int x;\n"
|
||
"};\n"
|
||
"class Base1 {\n"
|
||
" public:\n"
|
||
" int x;\n"
|
||
"};\n"
|
||
"struct Derived : Base0, Base1 {\n"
|
||
" int x;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:10]: (warning) The struct 'Derived' defines member variable with name 'x' also defined in its parent class 'Base0'.\n"
|
||
"[test.cpp:7] -> [test.cpp:10]: (warning) The struct 'Derived' defines member variable with name 'x' also defined in its parent class 'Base1'.\n", errout.str());
|
||
|
||
checkDuplInheritedMembers("class Base {\n"
|
||
" int x;\n"
|
||
"};\n"
|
||
"struct Derived : Base {\n"
|
||
" int y;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkDuplInheritedMembers("class A {\n"
|
||
" int x;\n"
|
||
"};\n"
|
||
"struct B {\n"
|
||
" int x;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// Unknown 'Base' class
|
||
checkDuplInheritedMembers("class Derived : public UnknownBase {\n"
|
||
" int x;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkDuplInheritedMembers("class Base {\n"
|
||
" int x;\n"
|
||
"};\n"
|
||
"class Derived : public Base {\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// #6692
|
||
checkDuplInheritedMembers("namespace test1 {\n"
|
||
" struct SWibble{};\n"
|
||
" typedef SWibble wibble;\n"
|
||
"}\n"
|
||
"namespace test2 {\n"
|
||
" struct SWibble : public test1::wibble {\n"
|
||
" int Value;\n"
|
||
" };\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
}
|
||
|
||
void checkCopyConstructor(const char code[]) {
|
||
// Clear the error log
|
||
errout.str("");
|
||
|
||
// Tokenize..
|
||
Tokenizer tokenizer(&settings0, this);
|
||
std::istringstream istr(code);
|
||
tokenizer.tokenize(istr, "test.cpp");
|
||
|
||
// Check..
|
||
CheckClass checkClass(&tokenizer, &settings0, this);
|
||
checkClass.copyconstructors();
|
||
}
|
||
|
||
void copyConstructor1() {
|
||
checkCopyConstructor("class F\n"
|
||
"{\n"
|
||
" public:\n"
|
||
" char *c,*p,*d;\n"
|
||
" F(const F &f) : p(f.p), c(f.c)\n"
|
||
" {\n"
|
||
" p=(char *)malloc(strlen(f.p)+1);\n"
|
||
" strcpy(p,f.p);\n"
|
||
" }\n"
|
||
" F(char *str)\n"
|
||
" {\n"
|
||
" p=(char *)malloc(strlen(str)+1);\n"
|
||
" strcpy(p,str);\n"
|
||
" }\n"
|
||
" F&operator=(const F&);\n"
|
||
" ~F();\n"
|
||
"};");
|
||
TODO_ASSERT_EQUALS("[test.cpp:5]: (warning) Value of pointer 'p', which points to allocated memory, is copied in copy constructor instead of allocating new memory.\n", "", errout.str());
|
||
|
||
checkCopyConstructor("class F {\n"
|
||
" char *p;\n"
|
||
" F(const F &f) {\n"
|
||
" p = f.p;\n"
|
||
" }\n"
|
||
" F(char *str) {\n"
|
||
" p = malloc(strlen(str)+1);\n"
|
||
" }\n"
|
||
" ~F();\n"
|
||
" F& operator=(const F&f);\n"
|
||
"};");
|
||
TODO_ASSERT_EQUALS("[test.cpp:4]: (warning) Value of pointer 'p', which points to allocated memory, is copied in copy constructor instead of allocating new memory.\n"
|
||
"[test.cpp:3] -> [test.cpp:7]: (warning) Copy constructor does not allocate memory for member 'p' although memory has been allocated in other constructors.\n",
|
||
"[test.cpp:4]: (warning) Value of pointer 'p', which points to allocated memory, is copied in copy constructor instead of allocating new memory.\n"
|
||
, errout.str());
|
||
|
||
checkCopyConstructor("class F\n"
|
||
"{\n"
|
||
" public:\n"
|
||
" char *c,*p,*d;\n"
|
||
" F(const F &f) :p(f.p)\n"
|
||
" {\n"
|
||
" }\n"
|
||
" F(char *str)\n"
|
||
" {\n"
|
||
" p=(char *)malloc(strlen(str)+1);\n"
|
||
" strcpy(p,str);\n"
|
||
" }\n"
|
||
" ~F();\n"
|
||
" F& operator=(const F&f);\n"
|
||
"};");
|
||
TODO_ASSERT_EQUALS("[test.cpp:5]: (warning) Value of pointer 'p', which points to allocated memory, is copied in copy constructor instead of allocating new memory.\n"
|
||
"[test.cpp:5] -> [test.cpp:10]: (warning) Copy constructor does not allocate memory for member 'p' although memory has been allocated in other constructors.\n",
|
||
""
|
||
, errout.str());
|
||
|
||
checkCopyConstructor("class kalci\n"
|
||
"{\n"
|
||
" public:\n"
|
||
" char *c,*p,*d;\n"
|
||
" kalci()\n"
|
||
" {\n"
|
||
" p=(char *)malloc(100);\n"
|
||
" strcpy(p,\"hello\");\n"
|
||
" c=(char *)malloc(100);\n"
|
||
" strcpy(p,\"hello\");\n"
|
||
" d=(char *)malloc(100);\n"
|
||
" strcpy(p,\"hello\");\n"
|
||
" }\n"
|
||
" kalci(const kalci &f)\n"
|
||
" {\n"
|
||
" p=(char *)malloc(strlen(str)+1);\n"
|
||
" strcpy(p,f.p);\n"
|
||
" c=(char *)malloc(strlen(str)+1);\n"
|
||
" strcpy(p,f.p);\n"
|
||
" d=(char *)malloc(strlen(str)+1);\n"
|
||
" strcpy(p,f.p);\n"
|
||
" }\n"
|
||
" ~kalci();\n"
|
||
" kalci& operator=(const kalci&kalci);\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkCopyConstructor("class F\n"
|
||
"{\n"
|
||
" public:\n"
|
||
" char *c,*p,*d;\n"
|
||
" F(char *str,char *st,char *string)\n"
|
||
" {\n"
|
||
" p=(char *)malloc(100);\n"
|
||
" strcpy(p,str);\n"
|
||
" c=(char *)malloc(100);\n"
|
||
" strcpy(p,st);\n"
|
||
" d=(char *)malloc(100);\n"
|
||
" strcpy(p,string);\n"
|
||
" }\n"
|
||
" F(const F &f)\n"
|
||
" {\n"
|
||
" p=(char *)malloc(strlen(str)+1);\n"
|
||
" strcpy(p,f.p);\n"
|
||
" c=(char *)malloc(strlen(str)+1);\n"
|
||
" strcpy(p,f.p);\n"
|
||
" }\n"
|
||
" ~F();\n"
|
||
" F& operator=(const F&f);\n"
|
||
"};");
|
||
TODO_ASSERT_EQUALS("[test.cpp:14] -> [test.cpp:11]: (warning) Copy constructor does not allocate memory for member 'd' although memory has been allocated in other constructors.\n", "", errout.str());
|
||
|
||
checkCopyConstructor("class F {\n"
|
||
" char *c;\n"
|
||
" F(char *str,char *st,char *string) {\n"
|
||
" p=(char *)malloc(100);\n"
|
||
" }\n"
|
||
" F(const F &f)\n"
|
||
" : p(malloc(size))\n"
|
||
" {\n"
|
||
" }\n"
|
||
" ~F();\n"
|
||
" F& operator=(const F&f);\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkCopyConstructor("class F {\n"
|
||
" char *c;\n"
|
||
" F(char *str,char *st,char *string)\n"
|
||
" : p(malloc(size))\n"
|
||
" {\n"
|
||
" }\n"
|
||
" F(const F &f)\n"
|
||
" {\n"
|
||
" }\n"
|
||
" ~F();\n"
|
||
" F& operator=(const F&f);\n"
|
||
"};");
|
||
TODO_ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:4]: (warning) Copy constructor does not allocate memory for member 'd' although memory has been allocated in other constructors.\n", "", errout.str());
|
||
|
||
checkCopyConstructor("class F\n"
|
||
"{\n"
|
||
" public:\n"
|
||
" char *c,*p,*d;\n"
|
||
" F()\n"
|
||
" {\n"
|
||
" p=(char *)malloc(100);\n"
|
||
" c=(char *)malloc(100);\n"
|
||
" d=(char*)malloc(100);\n"
|
||
" }\n"
|
||
" ~F();\n"
|
||
" F& operator=(const F&f);\n"
|
||
"};");
|
||
TODO_ASSERT_EQUALS("[test.cpp:8]: (warning) Class 'F' does not have a copy constructor which is recommended since it has dynamic memory/resource allocation(s).\n", "", errout.str());
|
||
|
||
checkCopyConstructor("class F\n"
|
||
"{\n"
|
||
" public:\n"
|
||
" char *c;\n"
|
||
" const char *p,*d;\n"
|
||
" F(char *str,char *st,char *string)\n"
|
||
" {\n"
|
||
" p=str;\n"
|
||
" d=st;\n"
|
||
" c=(char *)malloc(strlen(string)+1);\n"
|
||
" strcpy(d,string);\n"
|
||
" }\n"
|
||
" F(const F &f)\n"
|
||
" {\n"
|
||
" p=f.p;\n"
|
||
" d=f.d;\n"
|
||
" c=(char *)malloc(strlen(str)+1);\n"
|
||
" strcpy(d,f.p);\n"
|
||
" }\n"
|
||
" ~F();\n"
|
||
" F& operator=(const F&f);\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkCopyConstructor("class F : E\n"
|
||
"{\n"
|
||
" char *p;\n"
|
||
" F() {\n"
|
||
" p = malloc(100);\n"
|
||
" }\n"
|
||
" ~F();\n"
|
||
" F& operator=(const F&f);\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkCopyConstructor("class E { E(E&); };\n" // non-copyable
|
||
"class F : E\n"
|
||
"{\n"
|
||
" char *p;\n"
|
||
" F() {\n"
|
||
" p = malloc(100);\n"
|
||
" }\n"
|
||
" ~F();\n"
|
||
" F& operator=(const F&f);\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkCopyConstructor("class E {};\n"
|
||
"class F : E {\n"
|
||
" char *p;\n"
|
||
" F() {\n"
|
||
" p = malloc(100);\n"
|
||
" }\n"
|
||
" ~F();\n"
|
||
" F& operator=(const F&f);\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:5]: (warning) Class 'F' does not have a copy constructor which is recommended since it has dynamic memory/resource allocation(s).\n", errout.str());
|
||
|
||
checkCopyConstructor("class F {\n"
|
||
" char *p;\n"
|
||
" F() {\n"
|
||
" p = malloc(100);\n"
|
||
" }\n"
|
||
" F(F& f);\n"
|
||
" ~F();\n"
|
||
" F& operator=(const F&f);\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkCopyConstructor("class F {\n"
|
||
" char *p;\n"
|
||
" F() : p(malloc(100)) {}\n"
|
||
" ~F();\n"
|
||
" F& operator=(const F&f);\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (warning) Class 'F' does not have a copy constructor which is recommended since it has dynamic memory/resource allocation(s).\n", errout.str());
|
||
|
||
// #7198
|
||
checkCopyConstructor("struct F {\n"
|
||
" static char* c;\n"
|
||
" F() {\n"
|
||
" p = malloc(100);\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void copyConstructor2() { // ticket #4458
|
||
checkCopyConstructor("template <class _Tp>\n"
|
||
"class Vector\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" Vector() {\n"
|
||
" _M_finish = new _Tp[ 42 ];\n"
|
||
" }\n"
|
||
" Vector( const Vector<_Tp>& v ) {\n"
|
||
" }\n"
|
||
" ~Vector();\n"
|
||
" Vector& operator=(const Vector&v);\n"
|
||
" _Tp* _M_finish;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void copyConstructor3() {
|
||
checkCopyConstructor("struct F {\n"
|
||
" char* c;\n"
|
||
" F() { c = malloc(100); }\n"
|
||
" F(const F &f) = delete;\n"
|
||
" F&operator=(const F &f);\n"
|
||
" ~F();\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkCopyConstructor("struct F {\n"
|
||
" char* c;\n"
|
||
" F() { c = malloc(100); }\n"
|
||
" F(const F &f) = default;\n"
|
||
" F&operator=(const F &f);\n"
|
||
" ~F();\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (warning) Struct 'F' has dynamic memory/resource allocation(s). The copy constructor is explicitly defaulted but the default copy constructor does not work well. It is recommended to define or delete the copy constructor.\n", errout.str());
|
||
}
|
||
|
||
void copyConstructor4() {
|
||
checkCopyConstructor("class noncopyable {\n"
|
||
"protected:\n"
|
||
" noncopyable() {}\n"
|
||
" ~noncopyable() {}\n"
|
||
"\n"
|
||
"private:\n"
|
||
" noncopyable( const noncopyable& );\n"
|
||
" const noncopyable& operator=( const noncopyable& );\n"
|
||
"};\n"
|
||
"\n"
|
||
"class Base : private noncopyable {};\n"
|
||
"\n"
|
||
"class Foo : public Base {\n"
|
||
"public:\n"
|
||
" Foo() : m_ptr(new int) {}\n"
|
||
" ~Foo() { delete m_ptr; }\n"
|
||
"private:\n"
|
||
" int* m_ptr;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void noOperatorEq() {
|
||
checkCopyConstructor("struct F {\n"
|
||
" char* c;\n"
|
||
" F() { c = malloc(100); }\n"
|
||
" F(const F &f);\n"
|
||
" ~F();\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (warning) Struct 'F' does not have a operator= which is recommended since it has dynamic memory/resource allocation(s).\n", errout.str());
|
||
|
||
// defaulted operator=
|
||
checkCopyConstructor("struct F {\n"
|
||
" char* c;\n"
|
||
" F() { c = malloc(100); }\n"
|
||
" F(const F &f);\n"
|
||
" F &operator=(const F &f) = default;\n"
|
||
" ~F();\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (warning) Struct 'F' has dynamic memory/resource allocation(s). The operator= is explicitly defaulted but the default operator= does not work well. It is recommended to define or delete the operator=.\n", errout.str());
|
||
|
||
// deleted operator=
|
||
checkCopyConstructor("struct F {\n"
|
||
" char* c;\n"
|
||
" F() { c = malloc(100); }\n"
|
||
" F(const F &f);\n"
|
||
" F &operator=(const F &f) = delete;\n"
|
||
" ~F();\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// base class deletes operator=
|
||
checkCopyConstructor("struct F : NonCopyable {\n"
|
||
" char* c;\n"
|
||
" F() { c = malloc(100); }\n"
|
||
" F(const F &f);\n"
|
||
" ~F();\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void noDestructor() {
|
||
checkCopyConstructor("struct F {\n"
|
||
" char* c;\n"
|
||
" F() { c = malloc(100); }\n"
|
||
" F(const F &f);\n"
|
||
" F&operator=(const F&);"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (warning) Struct 'F' does not have a destructor which is recommended since it has dynamic memory/resource allocation(s).\n", errout.str());
|
||
|
||
checkCopyConstructor("struct F {\n"
|
||
" C* c;\n"
|
||
" F() { c = new C; }\n"
|
||
" F(const F &f);\n"
|
||
" F&operator=(const F&);"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkCopyConstructor("struct F {\n"
|
||
" int* i;\n"
|
||
" F() { i = new int(); }\n"
|
||
" F(const F &f);\n"
|
||
" F& operator=(const F&);"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (warning) Struct 'F' does not have a destructor which is recommended since it has dynamic memory/resource allocation(s).\n", errout.str());
|
||
|
||
checkCopyConstructor("struct Data { int x; int y; };\n"
|
||
"struct F {\n"
|
||
" Data* c;\n"
|
||
" F() { c = new Data; }\n"
|
||
" F(const F &f);\n"
|
||
" F&operator=(const F&);"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (warning) Struct 'F' does not have a destructor which is recommended since it has dynamic memory/resource allocation(s).\n", errout.str());
|
||
|
||
// defaulted destructor
|
||
checkCopyConstructor("struct F {\n"
|
||
" char* c;\n"
|
||
" F() { c = malloc(100); }\n"
|
||
" F(const F &f);\n"
|
||
" F &operator=(const F &f);\n"
|
||
" ~F() = default;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (warning) Struct 'F' has dynamic memory/resource allocation(s). The destructor is explicitly defaulted but the default destructor does not work well. It is recommended to define the destructor.\n", errout.str());
|
||
|
||
// deleted destructor
|
||
checkCopyConstructor("struct F {\n"
|
||
" char* c;\n"
|
||
" F() { c = malloc(100); }\n"
|
||
" F(const F &f);\n"
|
||
" F &operator=(const F &f);\n"
|
||
" ~F() = delete;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
// Check that operator Equal returns reference to this
|
||
void checkOpertorEqRetRefThis(const char code[]) {
|
||
// Clear the error log
|
||
errout.str("");
|
||
|
||
// Tokenize..
|
||
Tokenizer tokenizer(&settings0, this);
|
||
std::istringstream istr(code);
|
||
tokenizer.tokenize(istr, "test.cpp");
|
||
|
||
// Check..
|
||
CheckClass checkClass(&tokenizer, &settings0, this);
|
||
checkClass.operatorEqRetRefThis();
|
||
}
|
||
|
||
void operatorEqRetRefThis1() {
|
||
checkOpertorEqRetRefThis(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" A & operator=(const A &a) { return *this; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" A & operator=(const A &a) { return a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style) 'operator=' should return reference to 'this' instance.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" A & operator=(const A &);\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a) { return *this; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" A & operator=(const A &a);\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a) { return *this; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" A & operator=(const A &);\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a) { return a; }");
|
||
ASSERT_EQUALS("[test.cpp:6]: (style) 'operator=' should return reference to 'this' instance.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" A & operator=(const A &a);\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a) { return a; }");
|
||
ASSERT_EQUALS("[test.cpp:6]: (style) 'operator=' should return reference to 'this' instance.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" class B\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" B & operator=(const B &b) { return *this; }\n"
|
||
" };\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" class B\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" B & operator=(const B &b) { return b; }\n"
|
||
" };\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:7]: (style) 'operator=' should return reference to 'this' instance.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" class B\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" B & operator=(const B &);\n"
|
||
" };\n"
|
||
"};\n"
|
||
"A::B & A::B::operator=(const A::B &b) { return *this; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" class B\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" B & operator=(const B &);\n"
|
||
" };\n"
|
||
"};\n"
|
||
"A::B & A::B::operator=(const A::B &b) { return b; }");
|
||
ASSERT_EQUALS("[test.cpp:10]: (style) 'operator=' should return reference to 'this' instance.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
" class B;\n"
|
||
"};\n"
|
||
"class A::B\n"
|
||
"{\n"
|
||
" B & operator=(const B & b) { return b; }\n"
|
||
"};\n");
|
||
ASSERT_EQUALS("[test.cpp:6]: (style) 'operator=' should return reference to 'this' instance.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
" class B;\n"
|
||
"};\n"
|
||
"class A::B\n"
|
||
"{\n"
|
||
" B & operator=(const B &);\n"
|
||
"};\n"
|
||
"A::B & A::B::operator=(const A::B & b) { return b; }\n");
|
||
ASSERT_EQUALS("[test.cpp:8]: (style) 'operator=' should return reference to 'this' instance.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
" class B;\n"
|
||
"};\n"
|
||
"class A::B\n"
|
||
"{\n"
|
||
" A::B & operator=(const A::B & b) { return b; }\n"
|
||
"};\n");
|
||
ASSERT_EQUALS("[test.cpp:6]: (style) 'operator=' should return reference to 'this' instance.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
" class B;\n"
|
||
"};\n"
|
||
"class A::B\n"
|
||
"{\n"
|
||
" A::B & operator=(const A::B &);\n"
|
||
"};\n"
|
||
"A::B & A::B::operator=(const A::B & b) { return b; }\n");
|
||
ASSERT_EQUALS("[test.cpp:8]: (style) 'operator=' should return reference to 'this' instance.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"namespace A {\n"
|
||
" class B;\n"
|
||
"}\n"
|
||
"class A::B\n"
|
||
"{\n"
|
||
" B & operator=(const B & b) { return b; }\n"
|
||
"};\n");
|
||
ASSERT_EQUALS("[test.cpp:6]: (style) 'operator=' should return reference to 'this' instance.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"namespace A {\n"
|
||
" class B;\n"
|
||
"}\n"
|
||
"class A::B\n"
|
||
"{\n"
|
||
" B & operator=(const B &);\n"
|
||
"};\n"
|
||
"A::B & A::B::operator=(const A::B & b) { return b; }\n");
|
||
ASSERT_EQUALS("[test.cpp:8]: (style) 'operator=' should return reference to 'this' instance.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"namespace A {\n"
|
||
" class B;\n"
|
||
"}\n"
|
||
"class A::B\n"
|
||
"{\n"
|
||
" A::B & operator=(const A::B & b) { return b; }\n"
|
||
"};\n");
|
||
ASSERT_EQUALS("[test.cpp:6]: (style) 'operator=' should return reference to 'this' instance.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"namespace A {\n"
|
||
" class B;\n"
|
||
"}\n"
|
||
"class A::B\n"
|
||
"{\n"
|
||
" A::B & operator=(const A::B &);\n"
|
||
"};\n"
|
||
"A::B & A::B::operator=(const A::B & b) { return b; }\n");
|
||
ASSERT_EQUALS("[test.cpp:8]: (style) 'operator=' should return reference to 'this' instance.\n", errout.str());
|
||
}
|
||
|
||
void operatorEqRetRefThis2() {
|
||
// ticket # 1323
|
||
checkOpertorEqRetRefThis(
|
||
"class szp\n"
|
||
"{\n"
|
||
" szp &operator =(int *other) {}\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (error) No 'return' statement in non-void function causes undefined behavior.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class szp\n"
|
||
"{\n"
|
||
" szp &operator =(int *other);\n"
|
||
"};\n"
|
||
"szp &szp::operator =(int *other) {}");
|
||
ASSERT_EQUALS("[test.cpp:5]: (error) No 'return' statement in non-void function causes undefined behavior.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"namespace NS {\n"
|
||
" class szp;\n"
|
||
"}\n"
|
||
"class NS::szp\n"
|
||
"{\n"
|
||
" szp &operator =(int *other) {}\n"
|
||
"};\n");
|
||
ASSERT_EQUALS("[test.cpp:6]: (error) No 'return' statement in non-void function causes undefined behavior.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"namespace NS {\n"
|
||
" class szp;\n"
|
||
"}\n"
|
||
"class NS::szp\n"
|
||
"{\n"
|
||
" szp &operator =(int *other);\n"
|
||
"};\n"
|
||
"NS::szp &NS::szp::operator =(int *other) {}");
|
||
ASSERT_EQUALS("[test.cpp:8]: (error) No 'return' statement in non-void function causes undefined behavior.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"namespace NS {\n"
|
||
" class szp;\n"
|
||
"}\n"
|
||
"class NS::szp\n"
|
||
"{\n"
|
||
" NS::szp &operator =(int *other) {}\n"
|
||
"};\n");
|
||
ASSERT_EQUALS("[test.cpp:6]: (error) No 'return' statement in non-void function causes undefined behavior.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"namespace NS {\n"
|
||
" class szp;\n"
|
||
"}\n"
|
||
"class NS::szp\n"
|
||
"{\n"
|
||
" NS::szp &operator =(int *other);\n"
|
||
"};\n"
|
||
"NS::szp &NS::szp::operator =(int *other) {}");
|
||
ASSERT_EQUALS("[test.cpp:8]: (error) No 'return' statement in non-void function causes undefined behavior.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
" class szp;\n"
|
||
"};\n"
|
||
"class A::szp\n"
|
||
"{\n"
|
||
" szp &operator =(int *other) {}\n"
|
||
"};\n");
|
||
ASSERT_EQUALS("[test.cpp:6]: (error) No 'return' statement in non-void function causes undefined behavior.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
" class szp;\n"
|
||
"};\n"
|
||
"class A::szp\n"
|
||
"{\n"
|
||
" szp &operator =(int *other);\n"
|
||
"};\n"
|
||
"A::szp &A::szp::operator =(int *other) {}");
|
||
ASSERT_EQUALS("[test.cpp:8]: (error) No 'return' statement in non-void function causes undefined behavior.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
" class szp;\n"
|
||
"};\n"
|
||
"class A::szp\n"
|
||
"{\n"
|
||
" A::szp &operator =(int *other) {}\n"
|
||
"};\n");
|
||
ASSERT_EQUALS("[test.cpp:6]: (error) No 'return' statement in non-void function causes undefined behavior.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
" class szp;\n"
|
||
"};\n"
|
||
"class A::szp\n"
|
||
"{\n"
|
||
" A::szp &operator =(int *other);\n"
|
||
"};\n"
|
||
"A::szp &A::szp::operator =(int *other) {}");
|
||
ASSERT_EQUALS("[test.cpp:8]: (error) No 'return' statement in non-void function causes undefined behavior.\n", errout.str());
|
||
}
|
||
|
||
void operatorEqRetRefThis3() {
|
||
// ticket # 1405
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
"public:\n"
|
||
" inline A &operator =(int *other) { return (*this); };\n"
|
||
" inline A &operator =(long *other) { return (*this = 0); };\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
"public:\n"
|
||
" A &operator =(int *other);\n"
|
||
" A &operator =(long *other);\n"
|
||
"};\n"
|
||
"A &A::operator =(int *other) { return (*this); };\n"
|
||
"A &A::operator =(long *other) { return (*this = 0); };");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
"public:\n"
|
||
" inline A &operator =(int *other) { return (*this); };\n"
|
||
" inline A &operator =(long *other) { return operator = (*(int *)other); };\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
"public:\n"
|
||
" A &operator =(int *other);\n"
|
||
" A &operator =(long *other);\n"
|
||
"};\n"
|
||
"A &A::operator =(int *other) { return (*this); };\n"
|
||
"A &A::operator =(long *other) { return operator = (*(int *)other); };");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
"public:\n"
|
||
" A &operator =(int *other);\n"
|
||
" A &operator =(long *other);\n"
|
||
"};\n"
|
||
"A &A::operator =(int *other) { return (*this); };\n"
|
||
"A &A::operator =(long *other) { return this->operator = (*(int *)other); };");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqRetRefThis( // #9045
|
||
"class V {\n"
|
||
"public:\n"
|
||
" V& operator=(const V& r) {\n"
|
||
" if (this == &r) {\n"
|
||
" return ( *this );\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
" }\n"
|
||
"};\n");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void operatorEqRetRefThis4() {
|
||
// ticket # 1451
|
||
checkOpertorEqRetRefThis(
|
||
"P& P::operator = (const P& pc)\n"
|
||
"{\n"
|
||
" return (P&)(*this += pc);\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void operatorEqRetRefThis5() {
|
||
// ticket # 1550
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
"public:\n"
|
||
" A & operator=(const A &a) { }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (error) No 'return' statement in non-void function causes undefined behavior.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
"protected:\n"
|
||
" A & operator=(const A &a) {}\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style) 'operator=' should return reference to 'this' instance.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
"private:\n"
|
||
" A & operator=(const A &a) {}\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style) 'operator=' should return reference to 'this' instance.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
"public:\n"
|
||
" A & operator=(const A &a) {\n"
|
||
" rand();\n"
|
||
" throw std::exception();\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style) 'operator=' should either return reference to 'this' instance or be declared private and left unimplemented.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
"public:\n"
|
||
" A & operator=(const A &a) {\n"
|
||
" rand();\n"
|
||
" abort();\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style) 'operator=' should either return reference to 'this' instance or be declared private and left unimplemented.\n", errout.str());
|
||
|
||
checkOpertorEqRetRefThis(
|
||
"class A {\n"
|
||
"public:\n"
|
||
" A & operator=(const A &a);\n"
|
||
"};\n"
|
||
"A & A :: operator=(const A &a) { }");
|
||
ASSERT_EQUALS("[test.cpp:5]: (error) No 'return' statement in non-void function causes undefined behavior.\n", errout.str());
|
||
}
|
||
|
||
void operatorEqRetRefThis6() { // ticket #2478 (segmentation fault)
|
||
checkOpertorEqRetRefThis(
|
||
"class UString {\n"
|
||
"public:\n"
|
||
" UString& assign( const char* c_str );\n"
|
||
" UString& operator=( const UString& s );\n"
|
||
"};\n"
|
||
"UString& UString::assign( const char* c_str ) {\n"
|
||
" std::string tmp( c_str );\n"
|
||
" return assign( tmp );\n"
|
||
"}\n"
|
||
"UString& UString::operator=( const UString& s ) {\n"
|
||
" return assign( s );\n"
|
||
"}");
|
||
}
|
||
|
||
void operatorEqRetRefThis7() { // ticket #5782 Endless recursion in CheckClass::checkReturnPtrThis()
|
||
checkOpertorEqRetRefThis(
|
||
"class basic_fbstring {\n"
|
||
" basic_fbstring& operator=(int il) {\n"
|
||
" return assign();\n"
|
||
" }\n"
|
||
" basic_fbstring& assign() {\n"
|
||
" return replace();\n"
|
||
" }\n"
|
||
" basic_fbstring& replaceImplDiscr() {\n"
|
||
" return replace();\n"
|
||
" }\n"
|
||
" basic_fbstring& replace() {\n"
|
||
" return replaceImplDiscr();\n"
|
||
" }\n"
|
||
"};\n");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
// Check that operator Equal checks for assignment to self
|
||
void checkOpertorEqToSelf(const char code[]) {
|
||
// Clear the error log
|
||
errout.str("");
|
||
|
||
// Tokenize..
|
||
Tokenizer tokenizer(&settings1, this);
|
||
std::istringstream istr(code);
|
||
tokenizer.tokenize(istr, "test.cpp");
|
||
|
||
// Check..
|
||
CheckClass checkClass(&tokenizer, &settings1, this);
|
||
checkClass.operatorEqToSelf();
|
||
}
|
||
|
||
void operatorEqToSelf1() {
|
||
// this test has an assignment test but it is not needed
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" A & operator=(const A &a) { if (&a != this) { } return *this; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// this test doesn't have an assignment test but it is not needed
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" A & operator=(const A &a) { return *this; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// this test needs an assignment test and has it
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a)\n"
|
||
" {\n"
|
||
" if (&a != this)\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// this class needs an assignment test but doesn't have it
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a)\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" return *this;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:5]: (warning) 'operator=' should check for assignment to self to avoid problems with dynamic memory.\n", errout.str());
|
||
|
||
// this test has an assignment test but doesn't need it
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" A & operator=(const A &);\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a) { if (&a != this) { } return *this; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// this test doesn't have an assignment test but doesn't need it
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" A & operator=(const A &);\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a) { return *this; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// this test needs an assignment test and has it
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &);\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a)\n"
|
||
"{\n"
|
||
" if (&a != this)\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// this test needs an assignment test but doesn’t have it
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &);\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a)\n"
|
||
"{\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" return *this;\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:7]: (warning) 'operator=' should check for assignment to self to avoid problems with dynamic memory.\n", errout.str());
|
||
|
||
// ticket #1224
|
||
checkOpertorEqToSelf(
|
||
"const SubTree &SubTree::operator= (const SubTree &b)\n"
|
||
"{\n"
|
||
" CodeTree *oldtree = tree;\n"
|
||
" tree = new CodeTree(*b.tree);\n"
|
||
" delete oldtree;\n"
|
||
" return *this;\n"
|
||
"}\n"
|
||
"const SubTree &SubTree::operator= (const CodeTree &b)\n"
|
||
"{\n"
|
||
" CodeTree *oldtree = tree;\n"
|
||
" tree = new CodeTree(b);\n"
|
||
" delete oldtree;\n"
|
||
" return *this;\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
}
|
||
|
||
void operatorEqToSelf2() {
|
||
// this test has an assignment test but doesn't need it
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" class B\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" B & operator=(const B &b) { if (&b != this) { } return *this; }\n"
|
||
" };\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// this test doesn't have an assignment test but doesn't need it
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" class B\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" B & operator=(const B &b) { return *this; }\n"
|
||
" };\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// this test needs an assignment test but has it
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" class B\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" char *s;\n"
|
||
" B & operator=(const B &b)\n"
|
||
" {\n"
|
||
" if (&b != this)\n"
|
||
" {\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
" }\n"
|
||
" };\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// this test needs an assignment test but doesn't have it
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" class B\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" char *s;\n"
|
||
" B & operator=(const B &b)\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(b.s);\n"
|
||
" return *this;\n"
|
||
" }\n"
|
||
" };\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:8]: (warning) 'operator=' should check for assignment to self to avoid problems with dynamic memory.\n", errout.str());
|
||
|
||
// this test has an assignment test but doesn't need it
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" class B\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" B & operator=(const B &);\n"
|
||
" };\n"
|
||
"};\n"
|
||
"A::B & A::B::operator=(const A::B &b) { if (&b != this) { } return *this; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// this test doesn't have an assignment test but doesn't need it
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" class B\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" B & operator=(const B &);\n"
|
||
" };\n"
|
||
"};\n"
|
||
"A::B & A::B::operator=(const A::B &b) { return *this; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// this test needs an assignment test and has it
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" class B\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" char * s;\n"
|
||
" B & operator=(const B &);\n"
|
||
" };\n"
|
||
"};\n"
|
||
"A::B & A::B::operator=(const A::B &b)\n"
|
||
"{\n"
|
||
" if (&b != this)\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(b.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
" }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// this test needs an assignment test but doesn't have it
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" class B\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" char * s;\n"
|
||
" B & operator=(const B &);\n"
|
||
" };\n"
|
||
"};\n"
|
||
"A::B & A::B::operator=(const A::B &b)\n"
|
||
"{\n"
|
||
" free(s);\n"
|
||
" s = strdup(b.s);\n"
|
||
" return *this;\n"
|
||
" }");
|
||
ASSERT_EQUALS("[test.cpp:11]: (warning) 'operator=' should check for assignment to self to avoid problems with dynamic memory.\n", errout.str());
|
||
}
|
||
|
||
void operatorEqToSelf3() {
|
||
// this test has multiple inheritance so there is no trivial way to test for self assignment but doesn't need it
|
||
checkOpertorEqToSelf(
|
||
"class A : public B, public C\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" A & operator=(const A &a) { return *this; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// this test has multiple inheritance and needs an assignment test but there is no trivial way to test for it
|
||
checkOpertorEqToSelf(
|
||
"class A : public B, public C\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a)\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" return *this;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// this test has multiple inheritance so there is no trivial way to test for self assignment but doesn't need it
|
||
checkOpertorEqToSelf(
|
||
"class A : public B, public C\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" A & operator=(const A &);\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a) { return *this; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// this test has multiple inheritance and needs an assignment test but there is no trivial way to test for it
|
||
checkOpertorEqToSelf(
|
||
"class A : public B, public C\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &);\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a)\n"
|
||
"{\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" return *this;\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void operatorEqToSelf4() {
|
||
// this test has multiple inheritance so there is no trivial way to test for self assignment but doesn't need it
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" class B : public C, public D\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" B & operator=(const B &b) { return *this; }\n"
|
||
" };\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// this test has multiple inheritance and needs an assignment test but there is no trivial way to test for it
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" class B : public C, public D\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" char * s;\n"
|
||
" B & operator=(const B &b)\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(b.s);\n"
|
||
" return *this;\n"
|
||
" }\n"
|
||
" };\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// this test has multiple inheritance so there is no trivial way to test for self assignment but doesn't need it
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" class B : public C, public D\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" B & operator=(const B &);\n"
|
||
" };\n"
|
||
"};\n"
|
||
"A::B & A::B::operator=(const A::B &b) { return *this; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// this test has multiple inheritance and needs an assignment test but there is no trivial way to test for it
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" class B : public C, public D\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" char * s;\n"
|
||
" B & operator=(const B &);\n"
|
||
" };\n"
|
||
"};\n"
|
||
"A::B & A::B::operator=(const A::B &b)\n"
|
||
"{\n"
|
||
" free(s);\n"
|
||
" s = strdup(b.s);\n"
|
||
" return *this;\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void operatorEqToSelf5() {
|
||
// ticket # 1233
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a)\n"
|
||
" {\n"
|
||
" if((&a!=this))\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a)\n"
|
||
" {\n"
|
||
" if((this!=&a))\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a)\n"
|
||
" {\n"
|
||
" if(!(&a==this))\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a)\n"
|
||
" {\n"
|
||
" if(!(this==&a))\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a)\n"
|
||
" {\n"
|
||
" if(false==(&a==this))\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a)\n"
|
||
" {\n"
|
||
" if(false==(this==&a))\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a)\n"
|
||
" {\n"
|
||
" if(true!=(&a==this))\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a)\n"
|
||
" {\n"
|
||
" if(true!=(this==&a))\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a);\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a)\n"
|
||
"{\n"
|
||
" if((&a!=this))\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a);\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a)\n"
|
||
"{\n"
|
||
" if((this!=&a))\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a);\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a)\n"
|
||
"{\n"
|
||
" if(!(&a==this))\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a);\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a)\n"
|
||
"{\n"
|
||
" if(!(this==&a))\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a);\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a)\n"
|
||
"{\n"
|
||
" if(false==(&a==this))\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a);\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a)\n"
|
||
"{\n"
|
||
" if(false==(this==&a))\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a);\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a)\n"
|
||
"{\n"
|
||
" if(true!=(&a==this))\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" char *s;\n"
|
||
" A & operator=(const A &a);\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a)\n"
|
||
"{\n"
|
||
" if(true!=(this==&a))\n"
|
||
" {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" }\n"
|
||
" return *this;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"struct A {\n"
|
||
" char *s;\n"
|
||
" A& operator=(const B &b);\n"
|
||
"};\n"
|
||
"A& A::operator=(const B &b) {\n"
|
||
" free(s);\n"
|
||
" s = strdup(a.s);\n"
|
||
" return *this;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void operatorEqToSelf6() {
|
||
// ticket # 1550
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" A & operator=(const A &a)\n"
|
||
" {\n"
|
||
" delete [] data;\n"
|
||
" data = new char[strlen(a.data) + 1];\n"
|
||
" strcpy(data, a.data);\n"
|
||
" return *this;\n"
|
||
" }\n"
|
||
"private:\n"
|
||
" char * data;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (warning) 'operator=' should check for assignment to self to avoid problems with dynamic memory.\n", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" A & operator=(const A &a);\n"
|
||
"private:\n"
|
||
" char * data;\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a)\n"
|
||
"{\n"
|
||
" delete [] data;\n"
|
||
" data = new char[strlen(a.data) + 1];\n"
|
||
" strcpy(data, a.data);\n"
|
||
" return *this;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:8]: (warning) 'operator=' should check for assignment to self to avoid problems with dynamic memory.\n", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" A & operator=(const A &a)\n"
|
||
" {\n"
|
||
" delete data;\n"
|
||
" data = new char;\n"
|
||
" *data = *a.data;\n"
|
||
" return *this;\n"
|
||
" }\n"
|
||
"private:\n"
|
||
" char * data;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (warning) 'operator=' should check for assignment to self to avoid problems with dynamic memory.\n", errout.str());
|
||
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" A & operator=(const A &a);\n"
|
||
"private:\n"
|
||
" char * data;\n"
|
||
"};\n"
|
||
"A & A::operator=(const A &a)\n"
|
||
"{\n"
|
||
" delete data;\n"
|
||
" data = new char;\n"
|
||
" *data = *a.data;\n"
|
||
" return *this;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:8]: (warning) 'operator=' should check for assignment to self to avoid problems with dynamic memory.\n", errout.str());
|
||
}
|
||
|
||
void operatorEqToSelf7() {
|
||
checkOpertorEqToSelf(
|
||
"class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" A & assign(const A & a)\n"
|
||
" {\n"
|
||
" return *this;\n"
|
||
" }\n"
|
||
" A & operator=(const A &a)\n"
|
||
" {\n"
|
||
" return assign(a);\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void operatorEqToSelf8() {
|
||
checkOpertorEqToSelf(
|
||
"class FMat\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" FMat& copy(const FMat& rhs);\n"
|
||
" FMat& operator=(const FMat& in);\n"
|
||
"};\n"
|
||
"FMat& FMat::copy(const FMat& rhs)\n"
|
||
"{\n"
|
||
" return *this;\n"
|
||
"}\n"
|
||
"FMat& FMat::operator=(const FMat& in)\n"
|
||
"{\n"
|
||
" return copy(in);\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void operatorEqToSelf9() {
|
||
checkOpertorEqToSelf(
|
||
"class Foo\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" Foo& operator=(Foo* pOther);\n"
|
||
" Foo& operator=(Foo& other);\n"
|
||
"};\n"
|
||
"Foo& Foo::operator=(Foo* pOther)\n"
|
||
"{\n"
|
||
" return *this;\n"
|
||
"}\n"
|
||
"Foo& Foo::operator=(Foo& other)\n"
|
||
"{\n"
|
||
" return Foo::operator=(&other);\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
// Check that base classes have virtual destructors
|
||
void checkVirtualDestructor(const char code[], bool inconclusive = false) {
|
||
// Clear the error log
|
||
errout.str("");
|
||
|
||
settings0.inconclusive = inconclusive;
|
||
settings0.addEnabled("warning");
|
||
|
||
// Tokenize..
|
||
Tokenizer tokenizer(&settings0, this);
|
||
std::istringstream istr(code);
|
||
tokenizer.tokenize(istr, "test.cpp");
|
||
|
||
// Check..
|
||
CheckClass checkClass(&tokenizer, &settings0, this);
|
||
checkClass.virtualDestructor();
|
||
}
|
||
|
||
void virtualDestructor1() {
|
||
// Base class not found
|
||
|
||
checkVirtualDestructor("class Derived : public Base { };\n"
|
||
"Base *base = new Derived;\n"
|
||
"delete base;");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkVirtualDestructor("class Derived : Base { };\n"
|
||
"Base *base = new Derived;\n"
|
||
"delete base;");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void virtualDestructor2() {
|
||
// Base class doesn't have a destructor
|
||
|
||
checkVirtualDestructor("class Base { };\n"
|
||
"class Derived : public Base { public: ~Derived() { (void)11; } };"
|
||
"Base *base = new Derived;\n"
|
||
"delete base;");
|
||
ASSERT_EQUALS("[test.cpp:1]: (error) Class 'Base' which is inherited by class 'Derived' does not have a virtual destructor.\n", errout.str());
|
||
|
||
checkVirtualDestructor("class Base { };\n"
|
||
"class Derived : protected Base { public: ~Derived() { (void)11; } };"
|
||
"Base *base = new Derived;\n"
|
||
"delete base;");
|
||
ASSERT_EQUALS("[test.cpp:1]: (error) Class 'Base' which is inherited by class 'Derived' does not have a virtual destructor.\n", errout.str());
|
||
|
||
checkVirtualDestructor("class Base { };\n"
|
||
"class Derived : private Base { public: ~Derived() { (void)11; } };"
|
||
"Base *base = new Derived;\n"
|
||
"delete base;");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkVirtualDestructor("class Base { };\n"
|
||
"class Derived : Base { public: ~Derived() { (void)11; } };"
|
||
"Base *base = new Derived;\n"
|
||
"delete base;");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void virtualDestructor3() {
|
||
// Base class has a destructor, but it's not virtual
|
||
|
||
checkVirtualDestructor("class Base { public: ~Base(); };\n"
|
||
"class Derived : public Base { public: ~Derived() { (void)11; } };"
|
||
"Base *base = new Derived;\n"
|
||
"delete base;");
|
||
ASSERT_EQUALS("[test.cpp:1]: (error) Class 'Base' which is inherited by class 'Derived' does not have a virtual destructor.\n", errout.str());
|
||
|
||
checkVirtualDestructor("class Base { public: ~Base(); };\n"
|
||
"class Derived : protected Base { public: ~Derived() { (void)11; } };"
|
||
"Base *base = new Derived;\n"
|
||
"delete base;");
|
||
ASSERT_EQUALS("[test.cpp:1]: (error) Class 'Base' which is inherited by class 'Derived' does not have a virtual destructor.\n", errout.str());
|
||
|
||
checkVirtualDestructor("class Base { public: ~Base(); };\n"
|
||
"class Derived : private Fred, public Base { public: ~Derived() { (void)11; } };"
|
||
"Base *base = new Derived;\n"
|
||
"delete base;");
|
||
ASSERT_EQUALS("[test.cpp:1]: (error) Class 'Base' which is inherited by class 'Derived' does not have a virtual destructor.\n", errout.str());
|
||
}
|
||
|
||
void virtualDestructor4() {
|
||
// Derived class doesn't have a destructor => undefined behaviour according to paragraph 3 in [expr.delete]
|
||
|
||
checkVirtualDestructor("class Base { public: ~Base(); };\n"
|
||
"class Derived : public Base { };"
|
||
"Base *base = new Derived;\n"
|
||
"delete base;");
|
||
ASSERT_EQUALS("[test.cpp:1]: (error) Class 'Base' which is inherited by class 'Derived' does not have a virtual destructor.\n", errout.str());
|
||
|
||
checkVirtualDestructor("class Base { public: ~Base(); };\n"
|
||
"class Derived : private Fred, public Base { };"
|
||
"Base *base = new Derived;\n"
|
||
"delete base;");
|
||
ASSERT_EQUALS("[test.cpp:1]: (error) Class 'Base' which is inherited by class 'Derived' does not have a virtual destructor.\n", errout.str());
|
||
}
|
||
|
||
void virtualDestructor5() {
|
||
// Derived class has empty destructor => undefined behaviour according to paragraph 3 in [expr.delete]
|
||
|
||
checkVirtualDestructor("class Base { public: ~Base(); };\n"
|
||
"class Derived : public Base { public: ~Derived() {} };"
|
||
"Base *base = new Derived;\n"
|
||
"delete base;");
|
||
ASSERT_EQUALS("[test.cpp:1]: (error) Class 'Base' which is inherited by class 'Derived' does not have a virtual destructor.\n", errout.str());
|
||
|
||
checkVirtualDestructor("class Base { public: ~Base(); };\n"
|
||
"class Derived : public Base { public: ~Derived(); }; Derived::~Derived() {}"
|
||
"Base *base = new Derived;\n"
|
||
"delete base;");
|
||
ASSERT_EQUALS("[test.cpp:1]: (error) Class 'Base' which is inherited by class 'Derived' does not have a virtual destructor.\n", errout.str());
|
||
}
|
||
|
||
void virtualDestructor6() {
|
||
// Only report error if base class pointer is deleted that
|
||
// points at derived class
|
||
|
||
checkVirtualDestructor("class Base { public: ~Base(); };\n"
|
||
"class Derived : public Base { public: ~Derived() { (void)11; } };");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void virtualDestructorProtected() {
|
||
// Base class has protected destructor, it makes Base *p = new Derived(); fail
|
||
// during compilation time, so error is not possible. => no error
|
||
checkVirtualDestructor("class A\n"
|
||
"{\n"
|
||
"protected:\n"
|
||
" ~A() { }\n"
|
||
"};\n"
|
||
"\n"
|
||
"class B : public A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" ~B() { int a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void virtualDestructorInherited() {
|
||
// class A inherits virtual destructor from class Base -> no error
|
||
checkVirtualDestructor("class Base\n"
|
||
"{\n"
|
||
"public:\n"
|
||
"virtual ~Base() {}\n"
|
||
"};\n"
|
||
"class A : private Base\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" ~A() { }\n"
|
||
"};\n"
|
||
"\n"
|
||
"class B : public A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" ~B() { int a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// class A inherits virtual destructor from struct Base -> no error
|
||
// also notice that public is not given, but destructor is public, because
|
||
// we are using struct instead of class
|
||
checkVirtualDestructor("struct Base\n"
|
||
"{\n"
|
||
"virtual ~Base() {}\n"
|
||
"};\n"
|
||
"class A : public Base\n"
|
||
"{\n"
|
||
"};\n"
|
||
"\n"
|
||
"class B : public A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" ~B() { int a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// Unknown Base class -> it could have virtual destructor, so ignore
|
||
checkVirtualDestructor("class A : private Base\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" ~A() { }\n"
|
||
"};\n"
|
||
"\n"
|
||
"class B : public A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" ~B() { int a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// Virtual destructor is inherited -> no error
|
||
checkVirtualDestructor("class Base2\n"
|
||
"{\n"
|
||
"virtual ~Base2() {}\n"
|
||
"};\n"
|
||
"class Base : public Base2\n"
|
||
"{\n"
|
||
"};\n"
|
||
"class A : private Base\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" ~A() { }\n"
|
||
"};\n"
|
||
"\n"
|
||
"class B : public A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" ~B() { int a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// class A doesn't inherit virtual destructor from class Base -> error
|
||
checkVirtualDestructor("class Base\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" ~Base() {}\n"
|
||
"};\n"
|
||
"class A : private Base\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" ~A() { }\n"
|
||
"};\n"
|
||
"\n"
|
||
"class B : public A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" ~B() { int a; }\n"
|
||
"};");
|
||
TODO_ASSERT_EQUALS("[test.cpp:7]: (error) Class 'Base' which is inherited by class 'B' does not have a virtual destructor.\n",
|
||
"", errout.str());
|
||
}
|
||
|
||
void virtualDestructorTemplate() {
|
||
checkVirtualDestructor("template <typename T> class A\n"
|
||
"{\n"
|
||
" public:\n"
|
||
" virtual ~A(){}\n"
|
||
"};\n"
|
||
"template <typename T> class AA\n"
|
||
"{\n"
|
||
" public:\n"
|
||
" ~AA(){}\n"
|
||
"};\n"
|
||
"class B : public A<int>, public AA<double>\n"
|
||
"{\n"
|
||
" public:\n"
|
||
" ~B(){int a;}\n"
|
||
"};\n"
|
||
"\n"
|
||
"AA<double> *p = new B; delete p;");
|
||
ASSERT_EQUALS("[test.cpp:9]: (error) Class 'AA < double >' which is inherited by class 'B' does not have a virtual destructor.\n", errout.str());
|
||
}
|
||
|
||
void virtualDestructorInconclusive() {
|
||
checkVirtualDestructor("class Base {\n"
|
||
"public:\n"
|
||
" ~Base(){}\n"
|
||
" virtual void foo(){}\n"
|
||
"};\n", true);
|
||
ASSERT_EQUALS("[test.cpp:3]: (warning, inconclusive) Class 'Base' which has virtual members does not have a virtual destructor.\n", errout.str());
|
||
|
||
checkVirtualDestructor("class Base {\n"
|
||
"public:\n"
|
||
" ~Base(){}\n"
|
||
" virtual void foo(){}\n"
|
||
"};\n"
|
||
"class Derived : public Base {\n"
|
||
"public:\n"
|
||
" ~Derived() { bar(); }\n"
|
||
"};\n"
|
||
"void foo() {\n"
|
||
" Base * base = new Derived();\n"
|
||
" delete base;\n"
|
||
"}\n", true);
|
||
ASSERT_EQUALS("[test.cpp:3]: (error) Class 'Base' which is inherited by class 'Derived' does not have a virtual destructor.\n", errout.str());
|
||
|
||
// class Base destructor is not virtual but protected -> no error
|
||
checkVirtualDestructor("class Base {\n"
|
||
"public:\n"
|
||
" virtual void foo(){}\n"
|
||
"protected:\n"
|
||
" ~Base(){}\n"
|
||
"};\n", true);
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void checkNoMemset(const char code[]) {
|
||
Settings settings;
|
||
settings.addEnabled("warning");
|
||
settings.addEnabled("portability");
|
||
checkNoMemset(code,settings);
|
||
}
|
||
|
||
void checkNoMemset(const char code[], const Settings &settings) {
|
||
// Clear the error log
|
||
errout.str("");
|
||
|
||
// Tokenize..
|
||
Tokenizer tokenizer(&settings, this);
|
||
std::istringstream istr(code);
|
||
tokenizer.tokenize(istr, "test.cpp");
|
||
|
||
// Check..
|
||
CheckClass checkClass(&tokenizer, &settings, this);
|
||
checkClass.checkMemset();
|
||
}
|
||
|
||
void memsetOnClass() {
|
||
checkNoMemset("class Fred\n"
|
||
"{\n"
|
||
"};\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" Fred fred;\n"
|
||
" memset(&fred, 0, sizeof(Fred));\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkNoMemset("class Fred\n"
|
||
"{\n"
|
||
" static std::string b;\n"
|
||
"};\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" Fred fred;\n"
|
||
" memset(&fred, 0, sizeof(Fred));\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkNoMemset("class Fred\n"
|
||
"{\n"
|
||
" std::string * b;\n"
|
||
"};\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" Fred fred;\n"
|
||
" memset(&fred, 0, sizeof(Fred));\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkNoMemset("class Fred\n"
|
||
"{\n"
|
||
" std::string b;\n"
|
||
"};\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" Fred fred;\n"
|
||
" memset(&fred, 0, sizeof(Fred));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:8]: (error) Using 'memset' on class that contains a 'std::string'.\n", errout.str());
|
||
|
||
checkNoMemset("class Fred\n"
|
||
"{\n"
|
||
" mutable std::string b;\n"
|
||
"};\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" Fred fred;\n"
|
||
" memset(&fred, 0, sizeof(Fred));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:8]: (error) Using 'memset' on class that contains a 'std::string'.\n", errout.str());
|
||
|
||
checkNoMemset("class Fred {\n"
|
||
" std::string b;\n"
|
||
" void f();\n"
|
||
"};\n"
|
||
"void Fred::f() {\n"
|
||
" memset(this, 0, sizeof(*this));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:6]: (error) Using 'memset' on class that contains a 'std::string'.\n", errout.str());
|
||
|
||
checkNoMemset("class Fred\n"
|
||
"{\n"
|
||
"};\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" Fred fred;\n"
|
||
" memset(&fred, 0, sizeof(fred));\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkNoMemset("class Fred\n"
|
||
"{\n"
|
||
" std::string s;\n"
|
||
"};\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" Fred fred;\n"
|
||
" memset(&fred, 0, sizeof(fred));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:8]: (error) Using 'memset' on class that contains a 'std::string'.\n", errout.str());
|
||
|
||
checkNoMemset("class Fred\n"
|
||
"{\n"
|
||
" std::string s;\n"
|
||
"};\n"
|
||
"class Pebbles: public Fred {};\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" Pebbles pebbles;\n"
|
||
" memset(&pebbles, 0, sizeof(pebbles));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:9]: (error) Using 'memset' on class that contains a 'std::string'.\n", errout.str());
|
||
|
||
checkNoMemset("class Fred\n"
|
||
"{\n"
|
||
" virtual ~Fred();\n"
|
||
"};\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" Fred fred;\n"
|
||
" memset(&fred, 0, sizeof(fred));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:8]: (error) Using 'memset' on class that contains a virtual function.\n", errout.str());
|
||
|
||
checkNoMemset("class Fred\n"
|
||
"{\n"
|
||
" virtual ~Fred();\n"
|
||
"};\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" static Fred fred;\n"
|
||
" memset(&fred, 0, sizeof(fred));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:8]: (error) Using 'memset' on class that contains a virtual function.\n", errout.str());
|
||
|
||
checkNoMemset("class Fred\n"
|
||
"{\n"
|
||
"};\n"
|
||
"class Wilma\n"
|
||
"{\n"
|
||
" virtual ~Wilma();\n"
|
||
"};\n"
|
||
"class Pebbles: public Fred, Wilma {};\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" Pebbles pebbles;\n"
|
||
" memset(&pebbles, 0, sizeof(pebbles));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:12]: (error) Using 'memset' on class that contains a virtual function.\n", errout.str());
|
||
|
||
// Fred not defined in scope
|
||
checkNoMemset("namespace n1 {\n"
|
||
" class Fred\n"
|
||
" {\n"
|
||
" std::string b;\n"
|
||
" };\n"
|
||
"}\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" Fred fred;\n"
|
||
" memset(&fred, 0, sizeof(Fred));\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// Fred with namespace qualifier
|
||
checkNoMemset("namespace n1 {\n"
|
||
" class Fred\n"
|
||
" {\n"
|
||
" std::string b;\n"
|
||
" };\n"
|
||
"}\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" n1::Fred fred;\n"
|
||
" memset(&fred, 0, sizeof(n1::Fred));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:10]: (error) Using 'memset' on class that contains a 'std::string'.\n", errout.str());
|
||
|
||
// Fred with namespace qualifier
|
||
checkNoMemset("namespace n1 {\n"
|
||
" class Fred\n"
|
||
" {\n"
|
||
" std::string b;\n"
|
||
" };\n"
|
||
"}\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" n1::Fred fred;\n"
|
||
" memset(&fred, 0, sizeof(fred));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:10]: (error) Using 'memset' on class that contains a 'std::string'.\n", errout.str());
|
||
|
||
checkNoMemset("class A {\n"
|
||
" virtual ~A() { }\n"
|
||
" std::string s;\n"
|
||
"};\n"
|
||
"int f() {\n"
|
||
" const int N = 10;\n"
|
||
" A** arr = new A*[N];\n"
|
||
" memset(arr, 0, N * sizeof(A*));\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkNoMemset("class A {\n" // #5116 - nested class data is mixed in the SymbolDatabase
|
||
" std::string s;\n"
|
||
" struct B { int x; };\n"
|
||
"};\n"
|
||
"void f(A::B *b) {\n"
|
||
" memset(b,0,4);\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// #4461 Warn about memset/memcpy on class with references as members
|
||
checkNoMemset("class A {\n"
|
||
" std::string &s;\n"
|
||
"};\n"
|
||
"void f() {\n"
|
||
" A a;\n"
|
||
" memset(&a, 0, sizeof(a)); \n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:6]: (error) Using 'memset' on class that contains a reference.\n", errout.str());
|
||
checkNoMemset("class A {\n"
|
||
" const B&b;\n"
|
||
"};\n"
|
||
"void f() {\n"
|
||
" A a;\n"
|
||
" memset(&a, 0, sizeof(a)); \n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:6]: (error) Using 'memset' on class that contains a reference.\n", errout.str());
|
||
|
||
// #7456
|
||
checkNoMemset("struct A {\n"
|
||
" A() {}\n"
|
||
" virtual ~A() {}\n"
|
||
"};\n"
|
||
"struct B {\n"
|
||
" A* arr[4];\n"
|
||
"};\n"
|
||
"void func() {\n"
|
||
" B b[4];\n"
|
||
" memset(b, 0, sizeof(b));\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void memsetOnInvalid() { // Ticket #5425
|
||
checkNoMemset("union ASFStreamHeader {\n"
|
||
" struct AVMPACKED {\n"
|
||
" union {\n"
|
||
" struct AVMPACKED {\n"
|
||
" int width;\n"
|
||
" } vid;\n"
|
||
" };\n"
|
||
" } hdr;\n"
|
||
"};"
|
||
"void parseHeader() {\n"
|
||
" ASFStreamHeader strhdr;\n"
|
||
" memset(&strhdr, 0, sizeof(strhdr));\n"
|
||
"}");
|
||
}
|
||
|
||
void memsetOnStruct() {
|
||
checkNoMemset("struct A\n"
|
||
"{\n"
|
||
"};\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" A a;\n"
|
||
" memset(&a, 0, sizeof(A));\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkNoMemset("struct A\n"
|
||
"{\n"
|
||
"};\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" struct A a;\n"
|
||
" memset(&a, 0, sizeof(struct A));\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkNoMemset("struct A\n"
|
||
"{\n"
|
||
"};\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" struct A a;\n"
|
||
" memset(&a, 0, sizeof(A));\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkNoMemset("void f()\n"
|
||
"{\n"
|
||
" struct sockaddr_in6 fail;\n"
|
||
" memset(&fail, 0, sizeof(struct sockaddr_in6));\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkNoMemset("struct A\n"
|
||
"{\n"
|
||
" void g( struct sockaddr_in6& a);\n"
|
||
"private:\n"
|
||
" std::string b;\n"
|
||
"};\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" struct A fail;\n"
|
||
" memset(&fail, 0, sizeof(struct A));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:10]: (error) Using 'memset' on struct that contains a 'std::string'.\n", errout.str());
|
||
|
||
checkNoMemset("struct Fred\n"
|
||
"{\n"
|
||
" std::string s;\n"
|
||
"};\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" Fred fred;\n"
|
||
" memset(&fred, 0, sizeof(fred));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:8]: (error) Using 'memset' on struct that contains a 'std::string'.\n", errout.str());
|
||
|
||
checkNoMemset("struct Stringy {\n"
|
||
" std::string inner;\n"
|
||
"};\n"
|
||
"struct Foo {\n"
|
||
" Stringy s;\n"
|
||
"};\n"
|
||
"int main() {\n"
|
||
" Foo foo;\n"
|
||
" memset(&foo, 0, sizeof(Foo));\n"
|
||
"}");
|
||
|
||
ASSERT_EQUALS("[test.cpp:9]: (error) Using 'memset' on struct that contains a 'std::string'.\n", errout.str());
|
||
}
|
||
|
||
void memsetVector() {
|
||
checkNoMemset("class A\n"
|
||
"{ std::vector<int> ints; };\n"
|
||
"\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" A a;\n"
|
||
" memset(&a, 0, sizeof(A));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on class that contains a 'std::vector'.\n", errout.str());
|
||
|
||
checkNoMemset("struct A\n"
|
||
"{ std::vector<int> ints; };\n"
|
||
"\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" A a;\n"
|
||
" memset(&a, 0, sizeof(A));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on struct that contains a 'std::vector'.\n", errout.str());
|
||
|
||
checkNoMemset("struct A\n"
|
||
"{ std::vector<int> ints; };\n"
|
||
"\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" A a;\n"
|
||
" memset(&a, 0, sizeof(struct A));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on struct that contains a 'std::vector'.\n", errout.str());
|
||
|
||
checkNoMemset("struct A\n"
|
||
"{ std::vector<int> ints; };\n"
|
||
"\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" A a;\n"
|
||
" memset(&a, 0, sizeof(a));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on struct that contains a 'std::vector'.\n", errout.str());
|
||
|
||
checkNoMemset("class A\n"
|
||
"{ std::vector< std::vector<int> > ints; };\n"
|
||
"\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" A a;\n"
|
||
" memset(&a, 0, sizeof(A));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on class that contains a 'std::vector'.\n", errout.str());
|
||
|
||
checkNoMemset("struct A\n"
|
||
"{ std::vector< std::vector<int> > ints; };\n"
|
||
"\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" A a;\n"
|
||
" memset(&a, 0, sizeof(A));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on struct that contains a 'std::vector'.\n", errout.str());
|
||
|
||
checkNoMemset("struct A\n"
|
||
"{ std::vector< std::vector<int> > ints; };\n"
|
||
"\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" A a;\n"
|
||
" memset(&a, 0, sizeof(a));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on struct that contains a 'std::vector'.\n", errout.str());
|
||
|
||
checkNoMemset("struct A\n"
|
||
"{ std::vector<int *> ints; };\n"
|
||
"\n"
|
||
"void f()\n"
|
||
"{\n"
|
||
" A a;\n"
|
||
" memset(&a, 0, sizeof(A));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on struct that contains a 'std::vector'.\n", errout.str());
|
||
|
||
checkNoMemset("struct A {\n"
|
||
" std::vector<int *> buf;\n"
|
||
" operator int*() {return &buf[0];}\n"
|
||
"};\n"
|
||
"void f() {\n"
|
||
" A a;\n"
|
||
" memset(a, 0, 100);\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str()); // #4460
|
||
|
||
checkNoMemset("struct C {\n"
|
||
" std::string s;\n"
|
||
"};\n"
|
||
"int foo() {\n"
|
||
" C* c1[10][10];\n"
|
||
" C* c2[10];\n"
|
||
" C c3[10][10];\n"
|
||
" C** c4 = new C*[10];\n"
|
||
" memset(**c1, 0, 10);\n"
|
||
" memset(*c1, 0, 10);\n"
|
||
" memset(*c2, 0, 10);\n"
|
||
" memset(*c3, 0, 10);\n"
|
||
" memset(*c4, 0, 10);\n"
|
||
" memset(c2, 0, 10);\n"
|
||
" memset(c3, 0, 10);\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:9]: (error) Using 'memset' on struct that contains a 'std::string'.\n"
|
||
"[test.cpp:11]: (error) Using 'memset' on struct that contains a 'std::string'.\n"
|
||
"[test.cpp:12]: (error) Using 'memset' on struct that contains a 'std::string'.\n"
|
||
"[test.cpp:13]: (error) Using 'memset' on struct that contains a 'std::string'.\n", errout.str());
|
||
|
||
// Ticket #6953
|
||
checkNoMemset("typedef float realnum;\n"
|
||
"struct multilevel_data {\n"
|
||
" realnum *GammaInv;\n"
|
||
" realnum data[1];\n"
|
||
"};\n"
|
||
"void *new_internal_data() const {\n"
|
||
" multilevel_data *d = (multilevel_data *) malloc(sizeof(multilevel_data));\n"
|
||
" memset(d, 0, sizeof(multilevel_data));\n"
|
||
" return (void*) d;\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:8]: (portability) Using memset() on struct which contains a floating point number.\n", errout.str());
|
||
}
|
||
|
||
void memsetOnStdPodType() { // Ticket #5901
|
||
Settings settings;
|
||
const char xmldata[] = "<?xml version=\"1.0\"?>\n"
|
||
"<def>\n"
|
||
" <podtype name=\"std::uint8_t\" sign=\"u\" size=\"1\"/>\n"
|
||
" <podtype name=\"std::atomic_bool\"/>\n"
|
||
"</def>";
|
||
tinyxml2::XMLDocument doc;
|
||
doc.Parse(xmldata, sizeof(xmldata));
|
||
settings.library.load(doc);
|
||
|
||
checkNoMemset("class A {\n"
|
||
" std::array<int, 10> ints;\n"
|
||
"};\n"
|
||
"void f() {\n"
|
||
" A a;\n"
|
||
" memset(&a, 0, sizeof(A));\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str()); // std::array is POD (#5481)
|
||
|
||
checkNoMemset("struct st {\n"
|
||
" std::uint8_t a;\n"
|
||
" std::atomic_bool b;\n"
|
||
"};\n"
|
||
"\n"
|
||
"void f() {\n"
|
||
" st s;\n"
|
||
" std::memset(&s, 0, sizeof(st));\n"
|
||
"}", settings);
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void memsetOnFloat() {
|
||
checkNoMemset("struct A {\n"
|
||
" float f;\n"
|
||
"};\n"
|
||
"void f() {\n"
|
||
" A a;\n"
|
||
" memset(&a, 0, sizeof(A));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:6]: (portability) Using memset() on struct which contains a floating point number.\n", errout.str());
|
||
|
||
checkNoMemset("struct A {\n"
|
||
" float f[4];\n"
|
||
"};\n"
|
||
"void f() {\n"
|
||
" A a;\n"
|
||
" memset(&a, 0, sizeof(A));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:6]: (portability) Using memset() on struct which contains a floating point number.\n", errout.str());
|
||
|
||
checkNoMemset("struct A {\n"
|
||
" float f[4];\n"
|
||
"};\n"
|
||
"void f(const A& b) {\n"
|
||
" A a;\n"
|
||
" memcpy(&a, &b, sizeof(A));\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkNoMemset("struct A {\n"
|
||
" float* f;\n"
|
||
"};\n"
|
||
"void f() {\n"
|
||
" A a;\n"
|
||
" memset(&a, 0, sizeof(A));\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void memsetOnUnknown() {
|
||
checkNoMemset("void clang_tokenize(CXToken **Tokens) {\n"
|
||
" *Tokens = (CXToken *)malloc(sizeof(CXToken) * CXTokens.size());\n"
|
||
" memmove(*Tokens, CXTokens.data(), sizeof(CXToken) * CXTokens.size());\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void mallocOnClass() {
|
||
checkNoMemset("class C { C() {} };\n"
|
||
"void foo(C*& p) {\n"
|
||
" p = malloc(sizeof(C));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:1]: (warning) Memory for class instance allocated with malloc(), but class provides constructors.\n", errout.str());
|
||
|
||
checkNoMemset("class C { C(int z, Foo bar) { bar(); } };\n"
|
||
"void foo(C*& p) {\n"
|
||
" p = malloc(sizeof(C));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:1]: (warning) Memory for class instance allocated with malloc(), but class provides constructors.\n", errout.str());
|
||
|
||
checkNoMemset("struct C { C() {} };\n"
|
||
"void foo(C*& p) {\n"
|
||
" p = realloc(p, sizeof(C));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:1]: (warning) Memory for class instance allocated with realloc(), but class provides constructors.\n", errout.str());
|
||
|
||
checkNoMemset("struct C { virtual void bar(); };\n"
|
||
"void foo(C*& p) {\n"
|
||
" p = malloc(sizeof(C));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:1]: (error) Memory for class instance allocated with malloc(), but class contains a virtual function.\n", errout.str());
|
||
|
||
checkNoMemset("struct C { std::string s; };\n"
|
||
"void foo(C*& p) {\n"
|
||
" p = malloc(sizeof(C));\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:1]: (error) Memory for class instance allocated with malloc(), but class contains a 'std::string'.\n", errout.str());
|
||
|
||
checkNoMemset("class C { };\n" // C-Style class/struct
|
||
"void foo(C*& p) {\n"
|
||
" p = malloc(sizeof(C));\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkNoMemset("struct C { C() {} };\n"
|
||
"void foo(C*& p) {\n"
|
||
" p = new C();\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkNoMemset("class C { C() {} };\n"
|
||
"void foo(D*& p) {\n" // Unknown type
|
||
" p = malloc(sizeof(C));\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
|
||
void checkThisSubtraction(const char code[]) {
|
||
// Clear the error log
|
||
errout.str("");
|
||
|
||
// Tokenize..
|
||
Tokenizer tokenizer(&settings1, this);
|
||
std::istringstream istr(code);
|
||
tokenizer.tokenize(istr, "test.cpp");
|
||
|
||
// Check..
|
||
CheckClass checkClass(&tokenizer, &settings1, this);
|
||
checkClass.thisSubtraction();
|
||
}
|
||
|
||
void this_subtraction() {
|
||
checkThisSubtraction("; this-x ;");
|
||
ASSERT_EQUALS("[test.cpp:1]: (warning) Suspicious pointer subtraction. Did you intend to write '->'?\n", errout.str());
|
||
|
||
checkThisSubtraction("; *this = *this-x ;");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkThisSubtraction("; *this = *this-x ;\n"
|
||
"this-x ;");
|
||
ASSERT_EQUALS("[test.cpp:2]: (warning) Suspicious pointer subtraction. Did you intend to write '->'?\n", errout.str());
|
||
|
||
checkThisSubtraction("; *this = *this-x ;\n"
|
||
"this-x ;\n"
|
||
"this-x ;\n");
|
||
ASSERT_EQUALS("[test.cpp:2]: (warning) Suspicious pointer subtraction. Did you intend to write '->'?\n"
|
||
"[test.cpp:3]: (warning) Suspicious pointer subtraction. Did you intend to write '->'?\n", errout.str());
|
||
}
|
||
|
||
void checkConst(const char code[], Settings *s = nullptr, bool inconclusive = true) {
|
||
// Clear the error log
|
||
errout.str("");
|
||
|
||
// Check..
|
||
if (!s)
|
||
s = &settings0;
|
||
s->inconclusive = inconclusive;
|
||
|
||
// Tokenize..
|
||
Tokenizer tokenizer(s, this);
|
||
std::istringstream istr(code);
|
||
tokenizer.tokenize(istr, "test.cpp");
|
||
|
||
CheckClass checkClass(&tokenizer, s, this);
|
||
checkClass.checkConst();
|
||
}
|
||
|
||
void const1() {
|
||
checkConst("class Fred {\n"
|
||
" int a;\n"
|
||
" int getA() { return a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::getA' can be const.\n", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" const std::string foo() { return \"\"; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'Fred::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" const std::string & foo() { return \"\"; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
// constructors can't be const..
|
||
checkConst("class Fred {\n"
|
||
" int a;\n"
|
||
"public:\n"
|
||
" Fred() { }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// assignment through |=..
|
||
checkConst("class Fred {\n"
|
||
" int a;\n"
|
||
" int setA() { a |= true; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// functions with a call to a member function can only be const, if that member function is const, too.. (#1305)
|
||
checkConst("class foo {\n"
|
||
"public:\n"
|
||
" int x;\n"
|
||
" void a() { x = 1; }\n"
|
||
" void b() { a(); }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
"public:\n"
|
||
" int x;\n"
|
||
" int a() const { return x; }\n"
|
||
" void b() { a(); }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:5]: (style, inconclusive) Technically the member function 'Fred::b' can be const.\n", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
"public:\n"
|
||
" int x;\n"
|
||
" void b() { a(); }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (performance, inconclusive) Technically the member function 'Fred::b' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
// static functions can't be const..
|
||
checkConst("class foo\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" static unsigned get()\n"
|
||
" { return 0; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" const std::string foo() const throw() { return \"\"; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'Fred::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
}
|
||
|
||
void const2() {
|
||
// ticket 1344
|
||
// assignment to variable can't be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo() { s = \"\"; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// assignment to function argument reference can be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string & a) { a = s; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::foo' can be const.\n", errout.str());
|
||
|
||
// assignment to variable can't be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string & a) { s = a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// assignment to function argument references can be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string & a, std::string & b) { a = s; b = s; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::foo' can be const.\n", errout.str());
|
||
|
||
// assignment to variable, can't be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string & a, std::string & b) { s = a; s = b; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// assignment to variable, can't be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string & a, std::string & b) { s = a; b = a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// assignment to variable, can't be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string & a, std::string & b) { a = s; s = b; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const3() {
|
||
// assignment to function argument pointer can be const
|
||
checkConst("class Fred {\n"
|
||
" int s;\n"
|
||
" void foo(int * a) { *a = s; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::foo' can be const.\n", errout.str());
|
||
|
||
// assignment to variable, can't be const
|
||
checkConst("class Fred {\n"
|
||
" int s;\n"
|
||
" void foo(int * a) { s = *a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// assignment to function argument pointers can be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string * a, std::string * b) { *a = s; *b = s; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::foo' can be const.\n", errout.str());
|
||
|
||
// assignment to variable, can't be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string * a, std::string * b) { s = *a; s = *b; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// assignment to variable, can't be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string * a, std::string * b) { s = *a; *b = s; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// assignment to variable, can't be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string * a, std::string * b) { *a = s; s = b; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const4() {
|
||
checkConst("class Fred {\n"
|
||
" int a;\n"
|
||
" int getA();\n"
|
||
"};\n"
|
||
"int Fred::getA() { return a; }");
|
||
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::getA' can be const.\n", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" const std::string & foo();\n"
|
||
"};\n"
|
||
"const std::string & Fred::foo() { return \"\"; }");
|
||
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
// functions with a function call to a non-const member can't be const.. (#1305)
|
||
checkConst("class Fred\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" int x;\n"
|
||
" void a() { x = 1; }\n"
|
||
" void b();\n"
|
||
"};\n"
|
||
"void Fred::b() { a(); }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// static functions can't be const..
|
||
checkConst("class Fred\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" static unsigned get();\n"
|
||
"};\n"
|
||
"static unsigned Fred::get() { return 0; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// assignment to variable can't be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo();\n"
|
||
"};\n"
|
||
"void Fred::foo() { s = \"\"; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// assignment to function argument reference can be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string & a);\n"
|
||
"};\n"
|
||
"void Fred::foo(std::string & a) { a = s; }");
|
||
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::foo' can be const.\n", errout.str());
|
||
|
||
// assignment to variable can't be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string & a);\n"
|
||
"};\n"
|
||
"void Fred::foo(std::string & a) { s = a; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// assignment to function argument references can be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string & a, std::string & b);\n"
|
||
"};\n"
|
||
"void Fred::foo(std::string & a, std::string & b) { a = s; b = s; }");
|
||
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::foo' can be const.\n", errout.str());
|
||
|
||
// assignment to variable, can't be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string & a, std::string & b);\n"
|
||
"};\n"
|
||
"void Fred::foo(std::string & a, std::string & b) { s = a; s = b; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// assignment to variable, can't be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string & a, std::string & b);\n"
|
||
"};\n"
|
||
"void Fred::foo(std::string & a, std::string & b) { s = a; b = a; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// assignment to variable, can't be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string & a, std::string & b);\n"
|
||
"};\n"
|
||
"void Fred::foo(std::string & a, std::string & b) { a = s; s = b; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// assignment to function argument pointer can be const
|
||
checkConst("class Fred {\n"
|
||
" int s;\n"
|
||
" void foo(int * a);\n"
|
||
"};\n"
|
||
"void Fred::foo(int * a) { *a = s; }");
|
||
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::foo' can be const.\n", errout.str());
|
||
|
||
// assignment to variable, can't be const
|
||
checkConst("class Fred {\n"
|
||
" int s;\n"
|
||
" void foo(int * a);\n"
|
||
"};\n"
|
||
"void Fred::foo(int * a) { s = *a; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// assignment to function argument pointers can be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string * a, std::string * b);\n"
|
||
"};\n"
|
||
"void Fred::foo(std::string * a, std::string * b) { *a = s; *b = s; }");
|
||
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::foo' can be const.\n", errout.str());
|
||
|
||
// assignment to variable, can't be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string * a, std::string * b);\n"
|
||
"};\n"
|
||
"void Fred::foo(std::string * a, std::string * b) { s = *a; s = *b; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// assignment to variable, can't be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string * a, std::string * b);\n"
|
||
"};\n"
|
||
"void Fred::foo(std::string * a, std::string * b) { s = *a; *b = s; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// assignment to variable, can't be const
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo(std::string * a, std::string * b);\n"
|
||
"};\n"
|
||
"void Fred::foo(std::string * a, std::string * b) { *a = s; s = b; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// check functions with same name
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo();\n"
|
||
" void foo(std::string & a);\n"
|
||
" void foo(const std::string & a);\n"
|
||
"};\n"
|
||
"void Fred::foo() { }"
|
||
"void Fred::foo(std::string & a) { a = s; }"
|
||
"void Fred::foo(const std::string & a) { s = a; }");
|
||
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::foo' can be static (but you may consider moving to unnamed namespace).\n"
|
||
"[test.cpp:7] -> [test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::foo' can be const.\n", errout.str());
|
||
|
||
// check functions with different or missing parameter names
|
||
checkConst("class Fred {\n"
|
||
" std::string s;\n"
|
||
" void foo1(int, int);\n"
|
||
" void foo2(int a, int b);\n"
|
||
" void foo3(int, int b);\n"
|
||
" void foo4(int a, int);\n"
|
||
" void foo5(int a, int b);\n"
|
||
"};\n"
|
||
"void Fred::foo1(int a, int b) { }\n"
|
||
"void Fred::foo2(int c, int d) { }\n"
|
||
"void Fred::foo3(int a, int b) { }\n"
|
||
"void Fred::foo4(int a, int b) { }\n"
|
||
"void Fred::foo5(int, int) { }");
|
||
ASSERT_EQUALS("[test.cpp:9] -> [test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::foo1' can be static (but you may consider moving to unnamed namespace).\n"
|
||
"[test.cpp:10] -> [test.cpp:4]: (performance, inconclusive) Technically the member function 'Fred::foo2' can be static (but you may consider moving to unnamed namespace).\n"
|
||
"[test.cpp:11] -> [test.cpp:5]: (performance, inconclusive) Technically the member function 'Fred::foo3' can be static (but you may consider moving to unnamed namespace).\n"
|
||
"[test.cpp:12] -> [test.cpp:6]: (performance, inconclusive) Technically the member function 'Fred::foo4' can be static (but you may consider moving to unnamed namespace).\n"
|
||
"[test.cpp:13] -> [test.cpp:7]: (performance, inconclusive) Technically the member function 'Fred::foo5' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
// check nested classes
|
||
checkConst("class Fred {\n"
|
||
" class A {\n"
|
||
" int a;\n"
|
||
" int getA() { return a; }\n"
|
||
" };\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::A::getA' can be const.\n", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" class A {\n"
|
||
" int a;\n"
|
||
" int getA();\n"
|
||
" };\n"
|
||
" int A::getA() { return a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:6] -> [test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::A::getA' can be const.\n", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" class A {\n"
|
||
" int a;\n"
|
||
" int getA();\n"
|
||
" };\n"
|
||
"};\n"
|
||
"int Fred::A::getA() { return a; }");
|
||
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::A::getA' can be const.\n", errout.str());
|
||
|
||
// check deeply nested classes
|
||
checkConst("class Fred {\n"
|
||
" class B {\n"
|
||
" int b;\n"
|
||
" int getB() { return b; }\n"
|
||
" class A {\n"
|
||
" int a;\n"
|
||
" int getA() { return a; }\n"
|
||
" };\n"
|
||
" };\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::B::getB' can be const.\n"
|
||
"[test.cpp:7]: (style, inconclusive) Technically the member function 'Fred::B::A::getA' can be const.\n"
|
||
, errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" class B {\n"
|
||
" int b;\n"
|
||
" int getB();\n"
|
||
" class A {\n"
|
||
" int a;\n"
|
||
" int getA();\n"
|
||
" };\n"
|
||
" int A::getA() { return a; }\n"
|
||
" };\n"
|
||
" int B::getB() { return b; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:11] -> [test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::B::getB' can be const.\n"
|
||
"[test.cpp:9] -> [test.cpp:7]: (style, inconclusive) Technically the member function 'Fred::B::A::getA' can be const.\n", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" class B {\n"
|
||
" int b;\n"
|
||
" int getB();\n"
|
||
" class A {\n"
|
||
" int a;\n"
|
||
" int getA();\n"
|
||
" };\n"
|
||
" };\n"
|
||
" int B::A::getA() { return a; }\n"
|
||
" int B::getB() { return b; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:11] -> [test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::B::getB' can be const.\n"
|
||
"[test.cpp:10] -> [test.cpp:7]: (style, inconclusive) Technically the member function 'Fred::B::A::getA' can be const.\n", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" class B {\n"
|
||
" int b;\n"
|
||
" int getB();\n"
|
||
" class A {\n"
|
||
" int a;\n"
|
||
" int getA();\n"
|
||
" };\n"
|
||
" };\n"
|
||
"};\n"
|
||
"int Fred::B::A::getA() { return a; }\n"
|
||
"int Fred::B::getB() { return b; }");
|
||
ASSERT_EQUALS("[test.cpp:12] -> [test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::B::getB' can be const.\n"
|
||
"[test.cpp:11] -> [test.cpp:7]: (style, inconclusive) Technically the member function 'Fred::B::A::getA' can be const.\n", errout.str());
|
||
}
|
||
|
||
// operator< can often be const
|
||
void constoperator1() {
|
||
checkConst("struct Fred {\n"
|
||
" int a;\n"
|
||
" bool operator<(const Fred &f) { return a < f.a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::operator<' can be const.\n", errout.str());
|
||
}
|
||
|
||
// operator<<
|
||
void constoperator2() {
|
||
checkConst("struct Foo {\n"
|
||
" void operator<<(int);\n"
|
||
"};\n"
|
||
"struct Fred {\n"
|
||
" Foo foo;\n"
|
||
" void x()\n"
|
||
" {\n"
|
||
" foo << 123;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("struct Foo {\n"
|
||
" void operator<<(int);\n"
|
||
"};\n"
|
||
"struct Fred {\n"
|
||
" Foo foo;\n"
|
||
" void x()\n"
|
||
" {\n"
|
||
" std::cout << foo << 123;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:6]: (style, inconclusive) Technically the member function 'Fred::x' can be const.\n", errout.str());
|
||
}
|
||
|
||
void constoperator3() {
|
||
checkConst("struct Fred {\n"
|
||
" int array[10];\n"
|
||
" int const & operator [] (unsigned int index) const { return array[index]; }\n"
|
||
" int & operator [] (unsigned int index) { return array[index]; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("struct Fred {\n"
|
||
" int array[10];\n"
|
||
" int const & operator [] (unsigned int index) { return array[index]; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::operator[]' can be const.\n", errout.str());
|
||
}
|
||
|
||
void constoperator4() {
|
||
// #7953
|
||
checkConst("class A {\n"
|
||
" int c;\n"
|
||
"public:\n"
|
||
" operator int*() { return &c; };\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
" int c;\n"
|
||
"public:\n"
|
||
" operator const int*() { return &c; };\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::operatorconstint*' can be const.\n", errout.str());
|
||
|
||
// #2375
|
||
checkConst("struct Fred {\n"
|
||
" int array[10];\n"
|
||
" typedef int* (Fred::*UnspecifiedBoolType);\n"
|
||
" operator UnspecifiedBoolType() { };\n"
|
||
"};");
|
||
TODO_ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::operatorint**' can be const.\n", "", errout.str());
|
||
|
||
checkConst("struct Fred {\n"
|
||
" int array[10];\n"
|
||
" typedef int* (Fred::*UnspecifiedBoolType);\n"
|
||
" operator UnspecifiedBoolType() { array[0] = 0; };\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void constoperator5() { // ticket #3252
|
||
checkConst("class A {\n"
|
||
" int c;\n"
|
||
"public:\n"
|
||
" operator int& () {return c}\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
" int c;\n"
|
||
"public:\n"
|
||
" operator const int& () {return c}\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::operatorconstint&' can be const.\n", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
" int c;\n"
|
||
"public:\n"
|
||
" operator int () {return c}\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::operatorint' can be const.\n", errout.str());
|
||
}
|
||
|
||
void constoperator6() { // ticket #8669
|
||
checkConst("class A {\n"
|
||
" int c;\n"
|
||
" void f() { os >> *this; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const5() {
|
||
// ticket #1482
|
||
checkConst("class A {\n"
|
||
" int a;\n"
|
||
" bool foo(int i)\n"
|
||
" {\n"
|
||
" bool same;\n"
|
||
" same = (i == a);\n"
|
||
" return same;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'A::foo' can be const.\n", errout.str());
|
||
}
|
||
|
||
void const6() {
|
||
// ticket #1491
|
||
checkConst("class foo {\n"
|
||
"public:\n"
|
||
"};\n"
|
||
"void bar() {}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" void foo() { }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (performance, inconclusive) Technically the member function 'Fred::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("struct fast_string\n"
|
||
"{\n"
|
||
" union\n"
|
||
" {\n"
|
||
" char buff[100];\n"
|
||
" };\n"
|
||
" void set_type(char t);\n"
|
||
"};\n"
|
||
"inline void fast_string::set_type(char t)\n"
|
||
"{\n"
|
||
" buff[10] = t;\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const7() {
|
||
checkConst("class foo {\n"
|
||
" int a;\n"
|
||
"public:\n"
|
||
" void set(int i) { a = i; }\n"
|
||
" void set(const foo & f) { *this = f; }\n"
|
||
"};\n"
|
||
"void bar() {}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const8() {
|
||
// ticket #1517
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A():m_strValue(\"\"){}\n"
|
||
" std::string strGetString() { return m_strValue; }\n"
|
||
"private:\n"
|
||
" std::string m_strValue;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::strGetString' can be const.\n", errout.str());
|
||
}
|
||
|
||
void const9() {
|
||
// ticket #1515
|
||
checkConst("class wxThreadInternal {\n"
|
||
"public:\n"
|
||
" void SetExitCode(wxThread::ExitCode exitcode) { m_exitcode = exitcode; }\n"
|
||
"private:\n"
|
||
" wxThread::ExitCode m_exitcode;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const10() {
|
||
// ticket #1522
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" int foo() { return x = 0; }\n"
|
||
"private:\n"
|
||
" int x;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" int foo() { return x ? x : x = 0; }\n"
|
||
"private:\n"
|
||
" int x;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" int foo() { return x ? x = 0 : x; }\n"
|
||
"private:\n"
|
||
" int x;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const11() {
|
||
// ticket #1529
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" void set(struct tm time) { m_time = time; }\n"
|
||
"private:\n"
|
||
" struct tm m_time;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const12() {
|
||
// ticket #1525
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" int foo() { x = 0; }\n"
|
||
"private:\n"
|
||
" mutable int x;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'A::foo' can be const.\n", errout.str());
|
||
}
|
||
|
||
void const13() {
|
||
// ticket #1519
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" std::vector<int> GetVec() {return m_vec;}\n"
|
||
" std::pair<int,double> GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" std::vector<int> m_vec;\n"
|
||
" std::pair<int,double> m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetVec' can be const.\n"
|
||
"[test.cpp:5]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" const std::vector<int> & GetVec() {return m_vec;}\n"
|
||
" const std::pair<int,double> & GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" std::vector<int> m_vec;\n"
|
||
" std::pair<int,double> m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetVec' can be const.\n"
|
||
"[test.cpp:5]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
|
||
}
|
||
|
||
void const14() {
|
||
// extends ticket 1519
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" std::pair<std::vector<int>,double> GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" std::pair<std::vector<int>,double> m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" const std::pair<std::vector<int>,double>& GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" std::pair<std::vector<int>,double> m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" std::pair<std::vector<int>,double>& GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" std::pair<std::vector<int>,double> m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
|
||
checkConst("using namespace std;"
|
||
"class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" pair<int ,double> GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" pair<int ,double> m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
|
||
|
||
checkConst("using namespace std;"
|
||
"class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" const pair<int ,double> & GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" pair<int ,double> m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
|
||
|
||
checkConst("using namespace std;"
|
||
"class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" pair<int ,double> & GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" pair<int ,double> m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" std::pair< int,std::vector<int> > GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" std::pair< int,std::vector<int> > m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" const std::pair< int,std::vector<int> >& GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" std::pair< int,std::vector<int> > m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" std::pair< int,std::vector<int> >& GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" std::pair< int,std::vector<int> > m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
|
||
checkConst("using namespace std;"
|
||
"class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" pair< vector<int>, int > GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" pair< vector<int>, int > m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
|
||
|
||
checkConst("using namespace std;"
|
||
"class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" const pair< vector<int>, int >& GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" pair< vector<int>, int > m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
|
||
|
||
checkConst("using namespace std;"
|
||
"class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" pair< vector<int>, int >& GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" pair< vector<int>, int > m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" std::pair< std::vector<int>,std::vector<int> > GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" std::pair< std::vector<int>,std::vector<int> > m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" const std::pair< std::vector<int>,std::vector<int> >& GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" std::pair< std::vector<int>,std::vector<int> > m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" std::pair< std::vector<int>,std::vector<int> >& GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" std::pair< std::vector<int>,std::vector<int> > m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" std::pair< std::pair < int, char > , int > GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" std::pair< std::pair < int, char > , int > m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" const std::pair< std::pair < int, char > , int > & GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" std::pair< std::pair < int, char > , int > m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" std::pair< std::pair < int, char > , int > & GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" std::pair< std::pair < int, char > , int > m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" std::pair< int , std::pair < int, char > > GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" std::pair< int , std::pair < int, char > > m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" const std::pair< int , std::pair < int, char > >& GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" std::pair< int , std::pair < int, char > > m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" std::pair< int , std::pair < int, char > >& GetPair() {return m_pair;}\n"
|
||
"private:\n"
|
||
" std::pair< int , std::pair < int, char > > m_pair;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
|
||
checkConst("using namespace std;"
|
||
"class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" vector<int> GetVec() {return m_Vec;}\n"
|
||
"private:\n"
|
||
" vector<int> m_Vec;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetVec' can be const.\n", errout.str());
|
||
|
||
checkConst("using namespace std;"
|
||
"class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" const vector<int>& GetVec() {return m_Vec;}\n"
|
||
"private:\n"
|
||
" vector<int> m_Vec;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetVec' can be const.\n", errout.str());
|
||
|
||
checkConst("using namespace std;"
|
||
"class A {\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" vector<int>& GetVec() {return m_Vec;}\n"
|
||
"private:\n"
|
||
" vector<int> m_Vec;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" int * * foo() { return &x; }\n"
|
||
"private:\n"
|
||
" const int * x;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" const int ** foo() { return &x; }\n"
|
||
"private:\n"
|
||
" const int * x;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'A::foo' can be const.\n", errout.str());
|
||
}
|
||
|
||
void const15() {
|
||
checkConst("class Fred {\n"
|
||
" unsigned long long int a;\n"
|
||
" unsigned long long int getA() { return a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::getA' can be const.\n", errout.str());
|
||
|
||
// constructors can't be const..
|
||
checkConst("class Fred {\n"
|
||
" unsigned long long int a;\n"
|
||
"public:\n"
|
||
" Fred() { }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// assignment through |=..
|
||
checkConst("class Fred {\n"
|
||
" unsigned long long int a;\n"
|
||
" unsigned long long int setA() { a |= true; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// static functions can't be const..
|
||
checkConst("class foo\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" static unsigned long long int get()\n"
|
||
" { return 0; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const16() {
|
||
// ticket #1551
|
||
checkConst("class Fred {\n"
|
||
" int a;\n"
|
||
" void set(int i) { Fred::a = i; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const17() {
|
||
// ticket #1552
|
||
checkConst("class Fred {\n"
|
||
"public:\n"
|
||
" void set(int i, int j) { a[i].k = i; }\n"
|
||
"private:\n"
|
||
" struct { int k; } a[4];\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const18() {
|
||
checkConst("class Fred {\n"
|
||
"static int x;\n"
|
||
"public:\n"
|
||
" void set(int i) { x = i; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (performance, inconclusive) Technically the member function 'Fred::set' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
}
|
||
|
||
void const19() {
|
||
// ticket #1612
|
||
checkConst("using namespace std;\n"
|
||
"class Fred {\n"
|
||
"private:\n"
|
||
" std::string s;\n"
|
||
"public:\n"
|
||
" void set(std::string ss) { s = ss; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const20() {
|
||
// ticket #1602
|
||
checkConst("class Fred {\n"
|
||
" int x : 3;\n"
|
||
"public:\n"
|
||
" void set(int i) { x = i; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" list<int *> x;\n"
|
||
"public:\n"
|
||
" list<int *> get() { return x; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" list<const int *> x;\n"
|
||
"public:\n"
|
||
" list<const int *> get() { return x; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::get' can be const.\n", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" std::list<std::string &> x;\n"
|
||
"public:\n"
|
||
" std::list<std::string &> get() { return x; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" std::list<const std::string &> x;\n"
|
||
"public:\n"
|
||
" std::list<const std::string &> get() { return x; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::get' can be const.\n", errout.str());
|
||
}
|
||
|
||
void const21() {
|
||
// ticket #1683
|
||
checkConst("class A\n"
|
||
"{\n"
|
||
"private:\n"
|
||
" const char * l1[10];\n"
|
||
"public:\n"
|
||
" A()\n"
|
||
" {\n"
|
||
" for (int i = 0 ; i < 10; l1[i] = NULL, i++);\n"
|
||
" }\n"
|
||
" void f1() { l1[0] = \"Hello\"; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const22() {
|
||
checkConst("class A\n"
|
||
"{\n"
|
||
"private:\n"
|
||
" B::C * v1;\n"
|
||
"public:\n"
|
||
" void f1() { v1 = 0; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class A\n"
|
||
"{\n"
|
||
"private:\n"
|
||
" B::C * v1[0];\n"
|
||
"public:\n"
|
||
" void f1() { v1[0] = 0; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const23() {
|
||
checkConst("class Class {\n"
|
||
"public:\n"
|
||
" typedef Template<double> Type;\n"
|
||
" typedef Template2<Type> Type2;\n"
|
||
" void set_member(Type2 m) { _m = m; }\n"
|
||
"private:\n"
|
||
" Type2 _m;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const24() {
|
||
checkConst("class Class {\n"
|
||
"public:\n"
|
||
"void Settings::SetSetting(QString strSetting, QString strNewVal)\n"
|
||
"{\n"
|
||
" (*m_pSettings)[strSetting] = strNewVal;\n"
|
||
"}\n"
|
||
"private:\n"
|
||
" std::map<QString, QString> *m_pSettings;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
|
||
void const25() { // ticket #1724
|
||
checkConst("class A{\n"
|
||
"public:\n"
|
||
"A(){m_strVal=\"\";}\n"
|
||
"std::string strGetString() const\n"
|
||
"{return m_strVal.c_str();}\n"
|
||
"const std::string strGetString1() const\n"
|
||
"{return m_strVal.c_str();}\n"
|
||
"private:\n"
|
||
"std::string m_strVal;\n"
|
||
"};\n"
|
||
);
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class A{\n"
|
||
"public:\n"
|
||
"A(){m_strVal=\"\";}\n"
|
||
"std::string strGetString()\n"
|
||
"{return m_strVal.c_str();}\n"
|
||
"private:\n"
|
||
"std::string m_strVal;\n"
|
||
"};\n"
|
||
);
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::strGetString' can be const.\n", errout.str());
|
||
|
||
checkConst("class A{\n"
|
||
"public:\n"
|
||
"A(){m_strVal=\"\";}\n"
|
||
"const std::string strGetString1()\n"
|
||
"{return m_strVal.c_str();}\n"
|
||
"private:\n"
|
||
"std::string m_strVal;\n"
|
||
"};\n"
|
||
);
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::strGetString1' can be const.\n", errout.str());
|
||
|
||
checkConst("class A{\n"
|
||
"public:\n"
|
||
"A(){m_strVec.push_back(\"\");}\n"
|
||
"size_t strGetSize()\n"
|
||
"{return m_strVec.size();}\n"
|
||
"private:\n"
|
||
"std::vector<std::string> m_strVec;\n"
|
||
"};\n"
|
||
);
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::strGetSize' can be const.\n", errout.str());
|
||
|
||
checkConst("class A{\n"
|
||
"public:\n"
|
||
"A(){m_strVec.push_back(\"\");}\n"
|
||
"bool strGetEmpty()\n"
|
||
"{return m_strVec.empty();}\n"
|
||
"private:\n"
|
||
"std::vector<std::string> m_strVec;\n"
|
||
"};\n"
|
||
);
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::strGetEmpty' can be const.\n", errout.str());
|
||
}
|
||
|
||
void const26() { // ticket #1847
|
||
checkConst("class DelayBase {\n"
|
||
"public:\n"
|
||
"void swapSpecificDelays(int index1, int index2) {\n"
|
||
" std::swap<float>(delays_[index1], delays_[index2]);\n"
|
||
"}\n"
|
||
"float delays_[4];\n"
|
||
"};\n"
|
||
);
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("struct DelayBase {\n"
|
||
" float swapSpecificDelays(int index1) {\n"
|
||
" return delays_[index1];\n"
|
||
" }\n"
|
||
" float delays_[4];\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:2]: (style, inconclusive) Technically the member function 'DelayBase::swapSpecificDelays' can be const.\n", errout.str());
|
||
}
|
||
|
||
void const27() { // ticket #1882
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" A(){m_d=1.0; m_iRealVal=2.0;}\n"
|
||
" double dGetValue();\n"
|
||
"private:\n"
|
||
" double m_d;\n"
|
||
" double m_iRealVal;\n"
|
||
"};\n"
|
||
"double A::dGetValue() {\n"
|
||
" double dRet = m_iRealVal;\n"
|
||
" if( m_d != 0 )\n"
|
||
" return m_iRealVal / m_d;\n"
|
||
" return dRet;\n"
|
||
"};", nullptr, true);
|
||
ASSERT_EQUALS("[test.cpp:9] -> [test.cpp:4]: (style, inconclusive) Technically the member function 'A::dGetValue' can be const.\n", errout.str());
|
||
}
|
||
|
||
void const28() { // ticket #1883
|
||
checkConst("class P {\n"
|
||
"public:\n"
|
||
" P() { x=0.0; y=0.0; }\n"
|
||
" double x,y;\n"
|
||
"};\n"
|
||
"class A : public P {\n"
|
||
"public:\n"
|
||
" A():P(){}\n"
|
||
" void SetPos(double xPos, double yPos) {\n"
|
||
" x=xPos;\n"
|
||
" y=yPos;\n"
|
||
" }\n"
|
||
"};\n"
|
||
);
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class AA : public P {\n"
|
||
"public:\n"
|
||
" AA():P(){}\n"
|
||
" inline void vSetXPos(int x_)\n"
|
||
" {\n"
|
||
" UnknownScope::x = x_;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class AA {\n"
|
||
"public:\n"
|
||
" AA():P(){}\n"
|
||
" inline void vSetXPos(int x_)\n"
|
||
" {\n"
|
||
" UnknownScope::x = x_;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (performance, inconclusive) Technically the member function 'AA::vSetXPos' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
}
|
||
|
||
void const29() { // ticket #1922
|
||
checkConst("class test {\n"
|
||
" public:\n"
|
||
" test();\n"
|
||
" const char* get() const;\n"
|
||
" char* get();\n"
|
||
" private:\n"
|
||
" char* value_;\n"
|
||
"};\n"
|
||
"test::test()\n"
|
||
"{\n"
|
||
" value_ = 0;\n"
|
||
"}\n"
|
||
"const char* test::get() const\n"
|
||
"{\n"
|
||
" return value_;\n"
|
||
"}\n"
|
||
"char* test::get()\n"
|
||
"{\n"
|
||
" return value_;\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const30() {
|
||
// check for false negatives
|
||
checkConst("class Base {\n"
|
||
"public:\n"
|
||
" int a;\n"
|
||
"};\n"
|
||
"class Derived : public Base {\n"
|
||
"public:\n"
|
||
" int get() {\n"
|
||
" return a;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:7]: (style, inconclusive) Technically the member function 'Derived::get' can be const.\n", errout.str());
|
||
|
||
checkConst("class Base1 {\n"
|
||
"public:\n"
|
||
" int a;\n"
|
||
"};\n"
|
||
"class Base2 {\n"
|
||
"public:\n"
|
||
" int b;\n"
|
||
"};\n"
|
||
"class Derived : public Base1, public Base2 {\n"
|
||
"public:\n"
|
||
" int getA() {\n"
|
||
" return a;\n"
|
||
" }\n"
|
||
" int getB() {\n"
|
||
" return b;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:11]: (style, inconclusive) Technically the member function 'Derived::getA' can be const.\n"
|
||
"[test.cpp:14]: (style, inconclusive) Technically the member function 'Derived::getB' can be const.\n", errout.str());
|
||
|
||
checkConst("class Base {\n"
|
||
"public:\n"
|
||
" int a;\n"
|
||
"};\n"
|
||
"class Derived1 : public Base { };\n"
|
||
"class Derived2 : public Derived1 {\n"
|
||
"public:\n"
|
||
" int get() {\n"
|
||
" return a;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:8]: (style, inconclusive) Technically the member function 'Derived2::get' can be const.\n", errout.str());
|
||
|
||
checkConst("class Base {\n"
|
||
"public:\n"
|
||
" int a;\n"
|
||
"};\n"
|
||
"class Derived1 : public Base { };\n"
|
||
"class Derived2 : public Derived1 { };\n"
|
||
"class Derived3 : public Derived2 { };\n"
|
||
"class Derived4 : public Derived3 {\n"
|
||
"public:\n"
|
||
" int get() {\n"
|
||
" return a;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:10]: (style, inconclusive) Technically the member function 'Derived4::get' can be const.\n", errout.str());
|
||
|
||
// check for false positives
|
||
checkConst("class Base {\n"
|
||
"public:\n"
|
||
" int a;\n"
|
||
"};\n"
|
||
"class Derived : public Base {\n"
|
||
"public:\n"
|
||
" int get() const {\n"
|
||
" return a;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Base1 {\n"
|
||
"public:\n"
|
||
" int a;\n"
|
||
"};\n"
|
||
"class Base2 {\n"
|
||
"public:\n"
|
||
" int b;\n"
|
||
"};\n"
|
||
"class Derived : public Base1, public Base2 {\n"
|
||
"public:\n"
|
||
" int getA() const {\n"
|
||
" return a;\n"
|
||
" }\n"
|
||
" int getB() const {\n"
|
||
" return b;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Base {\n"
|
||
"public:\n"
|
||
" int a;\n"
|
||
"};\n"
|
||
"class Derived1 : public Base { };\n"
|
||
"class Derived2 : public Derived1 {\n"
|
||
"public:\n"
|
||
" int get() const {\n"
|
||
" return a;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Base {\n"
|
||
"public:\n"
|
||
" int a;\n"
|
||
"};\n"
|
||
"class Derived1 : public Base { };\n"
|
||
"class Derived2 : public Derived1 { };\n"
|
||
"class Derived3 : public Derived2 { };\n"
|
||
"class Derived4 : public Derived3 {\n"
|
||
"public:\n"
|
||
" int get() const {\n"
|
||
" return a;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const31() {
|
||
checkConst("namespace std { }\n"
|
||
"class Fred {\n"
|
||
"public:\n"
|
||
" int a;\n"
|
||
" int get() { return a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:5]: (style, inconclusive) Technically the member function 'Fred::get' can be const.\n", errout.str());
|
||
}
|
||
|
||
void const32() {
|
||
checkConst("class Fred {\n"
|
||
"public:\n"
|
||
" std::string a[10];\n"
|
||
" void seta() { a[0] = \"\"; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const33() {
|
||
checkConst("class derived : public base {\n"
|
||
"public:\n"
|
||
" void f(){}\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const34() { // ticket #1964
|
||
checkConst("class Bar {\n"
|
||
" void init(Foo * foo) {\n"
|
||
" foo.bar = this;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const35() { // ticket #2001
|
||
checkConst("namespace N\n"
|
||
"{\n"
|
||
" class Base\n"
|
||
" {\n"
|
||
" };\n"
|
||
"}\n"
|
||
"namespace N\n"
|
||
"{\n"
|
||
" class Derived : public Base\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" int getResourceName() { return var; }\n"
|
||
" int var;\n"
|
||
" };\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:12]: (style, inconclusive) Technically the member function 'N::Derived::getResourceName' can be const.\n", errout.str());
|
||
|
||
checkConst("namespace N\n"
|
||
"{\n"
|
||
" class Base\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" int getResourceName();\n"
|
||
" int var;\n"
|
||
" };\n"
|
||
"}\n"
|
||
"int N::Base::getResourceName() { return var; }");
|
||
ASSERT_EQUALS("[test.cpp:10] -> [test.cpp:6]: (style, inconclusive) Technically the member function 'N::Base::getResourceName' can be const.\n", errout.str());
|
||
|
||
checkConst("namespace N\n"
|
||
"{\n"
|
||
" class Base\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" int getResourceName();\n"
|
||
" int var;\n"
|
||
" };\n"
|
||
"}\n"
|
||
"namespace N\n"
|
||
"{\n"
|
||
" int Base::getResourceName() { return var; }\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:12] -> [test.cpp:6]: (style, inconclusive) Technically the member function 'N::Base::getResourceName' can be const.\n", errout.str());
|
||
|
||
checkConst("namespace N\n"
|
||
"{\n"
|
||
" class Base\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" int getResourceName();\n"
|
||
" int var;\n"
|
||
" };\n"
|
||
"}\n"
|
||
"using namespace N;\n"
|
||
"int Base::getResourceName() { return var; }");
|
||
ASSERT_EQUALS("[test.cpp:11] -> [test.cpp:6]: (style, inconclusive) Technically the member function 'N::Base::getResourceName' can be const.\n", errout.str());
|
||
}
|
||
|
||
void const36() { // ticket #2003
|
||
checkConst("class Foo {\n"
|
||
"public:\n"
|
||
" Blue::Utility::Size m_MaxQueueSize;\n"
|
||
" void SetMaxQueueSize(Blue::Utility::Size a_MaxQueueSize)\n"
|
||
" {\n"
|
||
" m_MaxQueueSize = a_MaxQueueSize;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const37() { // ticket #2081 and #2085
|
||
checkConst("class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" A(){};\n"
|
||
" std::string operator+(const char *c)\n"
|
||
" {\n"
|
||
" return m_str+std::string(c);\n"
|
||
" }\n"
|
||
"private:\n"
|
||
" std::string m_str;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:5]: (style, inconclusive) Technically the member function 'A::operator+' can be const.\n", errout.str());
|
||
|
||
checkConst("class Fred\n"
|
||
"{\n"
|
||
"private:\n"
|
||
" long x;\n"
|
||
"public:\n"
|
||
" Fred() {\n"
|
||
" x = 0;\n"
|
||
" }\n"
|
||
" bool isValid() {\n"
|
||
" return (x == 0x11224488);\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:9]: (style, inconclusive) Technically the member function 'Fred::isValid' can be const.\n", errout.str());
|
||
}
|
||
|
||
void const38() { // ticket #2135
|
||
checkConst("class Foo {\n"
|
||
"public:\n"
|
||
" ~Foo() { delete oArq; }\n"
|
||
" Foo(): oArq(new std::ofstream(\"...\")) {}\n"
|
||
" void MyMethod();\n"
|
||
"private:\n"
|
||
" std::ofstream *oArq;\n"
|
||
"};\n"
|
||
"void Foo::MyMethod()\n"
|
||
"{\n"
|
||
" (*oArq) << \"</table>\";\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const39() {
|
||
checkConst("class Foo\n"
|
||
"{\n"
|
||
" int * p;\n"
|
||
"public:\n"
|
||
" Foo () : p(0) { }\n"
|
||
" int * f();\n"
|
||
" const int * f() const;\n"
|
||
"};\n"
|
||
"const int * Foo::f() const\n"
|
||
"{\n"
|
||
" return p;\n"
|
||
"}\n"
|
||
"int * Foo::f()\n"
|
||
"{\n"
|
||
" return p;\n"
|
||
"}");
|
||
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const40() { // ticket #2228
|
||
checkConst("class SharedPtrHolder\n"
|
||
"{\n"
|
||
" private:\n"
|
||
" std::tr1::shared_ptr<int> pView;\n"
|
||
" public:\n"
|
||
" SharedPtrHolder()\n"
|
||
" { }\n"
|
||
" void SetView(const std::shared_ptr<int> & aView)\n"
|
||
" {\n"
|
||
" pView = aView;\n"
|
||
" }\n"
|
||
"};");
|
||
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const41() { // ticket #2255
|
||
checkConst("class Fred\n"
|
||
"{\n"
|
||
" ::std::string m_name;\n"
|
||
"public:\n"
|
||
" void SetName(const ::std::string & name)\n"
|
||
" {\n"
|
||
" m_name = name;\n"
|
||
" }\n"
|
||
"};");
|
||
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class SharedPtrHolder\n"
|
||
"{\n"
|
||
" ::std::tr1::shared_ptr<int> pNum;\n"
|
||
" public :\n"
|
||
" void SetNum(const ::std::tr1::shared_ptr<int> & apNum)\n"
|
||
" {\n"
|
||
" pNum = apNum;\n"
|
||
" }\n"
|
||
"};");
|
||
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class SharedPtrHolder2\n"
|
||
"{\n"
|
||
" public:\n"
|
||
" typedef ::std::tr1::shared_ptr<int> IntSharedPtr;\n"
|
||
" private:\n"
|
||
" IntSharedPtr pNum;\n"
|
||
" public :\n"
|
||
" void SetNum(const IntSharedPtr & apNum)\n"
|
||
" {\n"
|
||
" pNum = apNum;\n"
|
||
" }\n"
|
||
"};");
|
||
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("struct IntPtrTypes\n"
|
||
"{\n"
|
||
" typedef ::std::tr1::shared_ptr<int> Shared;\n"
|
||
"};\n"
|
||
"class SharedPtrHolder3\n"
|
||
"{\n"
|
||
" private:\n"
|
||
" IntPtrTypes::Shared pNum;\n"
|
||
" public :\n"
|
||
" void SetNum(const IntPtrTypes::Shared & apNum)\n"
|
||
" {\n"
|
||
" pNum = apNum;\n"
|
||
" }\n"
|
||
"};");
|
||
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("template <typename T>\n"
|
||
"struct PtrTypes\n"
|
||
"{\n"
|
||
" typedef ::std::tr1::shared_ptr<T> Shared;\n"
|
||
"};\n"
|
||
"class SharedPtrHolder4\n"
|
||
"{\n"
|
||
" private:\n"
|
||
" PtrTypes<int>::Shared pNum;\n"
|
||
" public :\n"
|
||
" void SetNum(const PtrTypes<int>::Shared & apNum)\n"
|
||
" {\n"
|
||
" pNum = apNum;\n"
|
||
" }\n"
|
||
"};");
|
||
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const42() { // ticket #2282
|
||
checkConst("class Fred\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" struct AB { };\n"
|
||
" bool f(AB * ab);\n"
|
||
"};\n"
|
||
"bool Fred::f(Fred::AB * ab)\n"
|
||
"{\n"
|
||
"}");
|
||
|
||
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:5]: (performance, inconclusive) Technically the member function 'Fred::f' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("class Fred\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" struct AB {\n"
|
||
" struct CD { };\n"
|
||
" };\n"
|
||
" bool f(AB::CD * cd);\n"
|
||
"};\n"
|
||
"bool Fred::f(Fred::AB::CD * cd)\n"
|
||
"{\n"
|
||
"}");
|
||
|
||
ASSERT_EQUALS("[test.cpp:9] -> [test.cpp:7]: (performance, inconclusive) Technically the member function 'Fred::f' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("namespace NS {\n"
|
||
" class Fred\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" struct AB {\n"
|
||
" struct CD { };\n"
|
||
" };\n"
|
||
" bool f(AB::CD * cd);\n"
|
||
" };\n"
|
||
" bool Fred::f(Fred::AB::CD * cd)\n"
|
||
" {\n"
|
||
" }\n"
|
||
"}");
|
||
|
||
ASSERT_EQUALS("[test.cpp:10] -> [test.cpp:8]: (performance, inconclusive) Technically the member function 'NS::Fred::f' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("namespace NS {\n"
|
||
" class Fred\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" struct AB {\n"
|
||
" struct CD { };\n"
|
||
" };\n"
|
||
" bool f(AB::CD * cd);\n"
|
||
" };\n"
|
||
"}\n"
|
||
"bool NS::Fred::f(NS::Fred::AB::CD * cd)\n"
|
||
"{\n"
|
||
"}");
|
||
|
||
ASSERT_EQUALS("[test.cpp:11] -> [test.cpp:8]: (performance, inconclusive) Technically the member function 'NS::Fred::f' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("class Foo {\n"
|
||
" class Fred\n"
|
||
" {\n"
|
||
" public:\n"
|
||
" struct AB {\n"
|
||
" struct CD { };\n"
|
||
" };\n"
|
||
" bool f(AB::CD * cd);\n"
|
||
" };\n"
|
||
"};\n"
|
||
"bool Foo::Fred::f(Foo::Fred::AB::CD * cd)\n"
|
||
"{\n"
|
||
"}");
|
||
|
||
ASSERT_EQUALS("[test.cpp:11] -> [test.cpp:8]: (performance, inconclusive) Technically the member function 'Foo::Fred::f' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
}
|
||
|
||
void const43() { // ticket 2377
|
||
checkConst("class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" void foo( AA::BB::CC::DD b );\n"
|
||
" AA::BB::CC::DD a;\n"
|
||
"};\n"
|
||
"void A::foo( AA::BB::CC::DD b )\n"
|
||
"{\n"
|
||
" a = b;\n"
|
||
"}");
|
||
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("namespace AA\n"
|
||
"{\n"
|
||
" namespace BB\n"
|
||
" {\n"
|
||
" namespace CC\n"
|
||
" {\n"
|
||
" struct DD\n"
|
||
" {};\n"
|
||
" }\n"
|
||
" }\n"
|
||
"}\n"
|
||
"class A\n"
|
||
"{\n"
|
||
" public:\n"
|
||
"\n"
|
||
" AA::BB::CC::DD a;\n"
|
||
" void foo(AA::BB::CC::DD b)\n"
|
||
" {\n"
|
||
" a = b;\n"
|
||
" }\n"
|
||
"};");
|
||
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("namespace ZZ\n"
|
||
"{\n"
|
||
" namespace YY\n"
|
||
" {\n"
|
||
" struct XX\n"
|
||
" {};\n"
|
||
" }\n"
|
||
"}\n"
|
||
"class B\n"
|
||
"{\n"
|
||
" public:\n"
|
||
" ZZ::YY::XX a;\n"
|
||
" void foo(ZZ::YY::XX b)\n"
|
||
" {\n"
|
||
" a = b;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const44() { // ticket 2595
|
||
checkConst("class A\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" bool bOn;\n"
|
||
" bool foo()\n"
|
||
" {\n"
|
||
" return 0 != (bOn = bOn);\n"
|
||
" }\n"
|
||
"};");
|
||
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const45() { // ticket 2664
|
||
checkConst("namespace wraps {\n"
|
||
" class BaseLayout {};\n"
|
||
"}\n"
|
||
"namespace tools {\n"
|
||
" class WorkspaceControl :\n"
|
||
" public wraps::BaseLayout\n"
|
||
" {\n"
|
||
" int toGrid(int _value)\n"
|
||
" {\n"
|
||
" }\n"
|
||
" };\n"
|
||
"}");
|
||
|
||
ASSERT_EQUALS("[test.cpp:8]: (performance, inconclusive) Technically the member function 'tools::WorkspaceControl::toGrid' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
}
|
||
|
||
void const46() { // ticket 2663
|
||
checkConst("class Altren {\n"
|
||
"public:\n"
|
||
" int fun1() {\n"
|
||
" int a;\n"
|
||
" a++;\n"
|
||
" }\n"
|
||
" int fun2() {\n"
|
||
" b++;\n"
|
||
" }\n"
|
||
"};");
|
||
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Altren::fun1' can be static (but you may consider moving to unnamed namespace).\n"
|
||
"[test.cpp:7]: (performance, inconclusive) Technically the member function 'Altren::fun2' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
}
|
||
|
||
void const47() { // ticket 2670
|
||
checkConst("class Altren {\n"
|
||
"public:\n"
|
||
" void foo() { delete this; }\n"
|
||
" void foo(int i) const { }\n"
|
||
" void bar() { foo(); }\n"
|
||
"};");
|
||
|
||
ASSERT_EQUALS("[test.cpp:4]: (performance, inconclusive) Technically the member function 'Altren::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("class Altren {\n"
|
||
"public:\n"
|
||
" void foo() { delete this; }\n"
|
||
" void foo(int i) const { }\n"
|
||
" void bar() { foo(1); }\n"
|
||
"};");
|
||
|
||
ASSERT_EQUALS("[test.cpp:4]: (performance, inconclusive) Technically the member function 'Altren::foo' can be static (but you may consider moving to unnamed namespace).\n"
|
||
"[test.cpp:5]: (style, inconclusive) Technically the member function 'Altren::bar' can be const.\n", errout.str());
|
||
}
|
||
|
||
void const48() { // ticket 2672
|
||
checkConst("class S0 {\n"
|
||
" class S1 {\n"
|
||
" class S2 {\n"
|
||
" class S3 {\n"
|
||
" class S4 { };\n"
|
||
" };\n"
|
||
" };\n"
|
||
" };\n"
|
||
"};\n"
|
||
"class TextIterator {\n"
|
||
" S0::S1::S2::S3::S4 mCurrent, mSave;\n"
|
||
"public:\n"
|
||
" bool setTagColour();\n"
|
||
"};\n"
|
||
"bool TextIterator::setTagColour() {\n"
|
||
" mSave = mCurrent;\n"
|
||
"}");
|
||
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const49() { // ticket 2795
|
||
checkConst("class A {\n"
|
||
" private:\n"
|
||
" std::map<unsigned int,unsigned int> _hash;\n"
|
||
" public:\n"
|
||
" A() : _hash() {}\n"
|
||
" unsigned int fetch(unsigned int key)\n" // cannot be 'const'
|
||
" {\n"
|
||
" return _hash[key];\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const50() { // ticket 2943
|
||
checkConst("class Altren\n"
|
||
"{\n"
|
||
" class SubClass : public std::vector<int>\n"
|
||
" {\n"
|
||
" };\n"
|
||
"};\n"
|
||
"void _setAlign()\n"
|
||
"{\n"
|
||
" if (mTileSize.height > 0) return;\n"
|
||
" if (mEmptyView) return;\n"
|
||
"}");
|
||
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const51() { // ticket 3040
|
||
checkConst("class PSIPTable {\n"
|
||
"public:\n"
|
||
" PSIPTable() : _pesdata(0) { }\n"
|
||
" const unsigned char* pesdata() const { return _pesdata; }\n"
|
||
" unsigned char* pesdata() { return _pesdata; }\n"
|
||
" void SetSection(uint num) { pesdata()[6] = num; }\n"
|
||
"private:\n"
|
||
" unsigned char *_pesdata;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class PESPacket {\n"
|
||
"public:\n"
|
||
" PESPacket() : _pesdata(0) { }\n"
|
||
" const unsigned char* pesdata() const { return _pesdata; }\n"
|
||
" unsigned char* pesdata() { return _pesdata; }\n"
|
||
"private:\n"
|
||
" unsigned char *_pesdata;\n"
|
||
"};\n"
|
||
"class PSIPTable : public PESPacket\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" void SetSection(uint num) { pesdata()[6] = num; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const52() { // ticket 3048
|
||
checkConst("class foo {\n"
|
||
" void DoSomething(int &a) const { a = 1; }\n"
|
||
" void DoSomethingElse() { DoSomething(bar); }\n"
|
||
"private:\n"
|
||
" int bar;\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'foo::DoSomething' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
}
|
||
|
||
void const53() { // ticket 3049
|
||
checkConst("class A {\n"
|
||
" public:\n"
|
||
" A() : foo(false) {};\n"
|
||
" virtual bool One(bool b = false) { foo = b; return false; }\n"
|
||
" private:\n"
|
||
" bool foo;\n"
|
||
"};\n"
|
||
"class B : public A {\n"
|
||
" public:\n"
|
||
" B() {};\n"
|
||
" bool One(bool b = false) { return false; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const54() { // ticket 3052
|
||
checkConst("class Example {\n"
|
||
" public:\n"
|
||
" void Clear(void) { Example tmp; (*this) = tmp; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const55() {
|
||
checkConst("class MyObject {\n"
|
||
" int tmp;\n"
|
||
" MyObject() : tmp(0) {}\n"
|
||
"public:\n"
|
||
" void set(std::stringstream &in) { in >> tmp; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const56() { // ticket #3149
|
||
checkConst("class MyObject {\n"
|
||
"public:\n"
|
||
" void foo(int x) {\n"
|
||
" switch (x) { }\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'MyObject::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("class A\n"
|
||
"{\n"
|
||
" protected:\n"
|
||
" unsigned short f (unsigned short X);\n"
|
||
" public:\n"
|
||
" A ();\n"
|
||
"};\n"
|
||
"\n"
|
||
"unsigned short A::f (unsigned short X)\n"
|
||
"{\n"
|
||
" enum ERetValues {RET_NOK = 0, RET_OK = 1};\n"
|
||
" enum ETypes {FLOAT_TYPE = 1, INT_TYPE = 2};\n"
|
||
"\n"
|
||
" try\n"
|
||
" {\n"
|
||
" switch (X)\n"
|
||
" {\n"
|
||
" case FLOAT_TYPE:\n"
|
||
" {\n"
|
||
" return RET_OK;\n"
|
||
" }\n"
|
||
" case INT_TYPE:\n"
|
||
" {\n"
|
||
" return RET_OK;\n"
|
||
" }\n"
|
||
" default:\n"
|
||
" {\n"
|
||
" return RET_NOK;\n"
|
||
" }\n"
|
||
" }\n"
|
||
" }\n"
|
||
" catch (...)\n"
|
||
" {\n"
|
||
" return RET_NOK;\n"
|
||
" }\n"
|
||
"\n"
|
||
" return RET_NOK;\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:9] -> [test.cpp:4]: (performance, inconclusive) Technically the member function 'A::f' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("class MyObject {\n"
|
||
"public:\n"
|
||
" void foo(int x) {\n"
|
||
" for (int i = 0; i < 5; i++) { }\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'MyObject::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
}
|
||
|
||
void const57() { // tickets #2669 and #2477
|
||
checkConst("namespace MyGUI\n"
|
||
"{\n"
|
||
" namespace types\n"
|
||
" {\n"
|
||
" struct TSize {};\n"
|
||
" struct TCoord {\n"
|
||
" TSize size() const { }\n"
|
||
" };\n"
|
||
" }\n"
|
||
" typedef types::TSize IntSize;\n"
|
||
" typedef types::TCoord IntCoord;\n"
|
||
"}\n"
|
||
"class SelectorControl\n"
|
||
"{\n"
|
||
" MyGUI::IntSize getSize()\n"
|
||
" {\n"
|
||
" return mCoordValue.size();\n"
|
||
" }\n"
|
||
"private:\n"
|
||
" MyGUI::IntCoord mCoordValue;\n"
|
||
"};");
|
||
TODO_ASSERT_EQUALS("[test.cpp:7]: (performance, inconclusive) Technically the member function 'MyGUI::types::TCoord::size' can be static (but you may consider moving to unnamed namespace).\n"
|
||
"[test.cpp:15]: (style, inconclusive) Technically the member function 'SelectorControl::getSize' can be const.\n",
|
||
"[test.cpp:7]: (performance, inconclusive) Technically the member function 'MyGUI::types::TCoord::size' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("struct Foo {\n"
|
||
" Bar b;\n"
|
||
" void foo(Foo f) {\n"
|
||
" b.run();\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("struct Bar {\n"
|
||
" int i = 0;\n"
|
||
" void run() { i++; }\n"
|
||
"};\n"
|
||
"struct Foo {\n"
|
||
" Bar b;\n"
|
||
" void foo(Foo f) {\n"
|
||
" b.run();\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("struct Bar {\n"
|
||
" void run() const { }\n"
|
||
"};\n"
|
||
"struct Foo {\n"
|
||
" Bar b;\n"
|
||
" void foo(Foo f) {\n"
|
||
" b.run();\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'Bar::run' can be static (but you may consider moving to unnamed namespace).\n"
|
||
"[test.cpp:6]: (style, inconclusive) Technically the member function 'Foo::foo' can be const.\n", errout.str());
|
||
}
|
||
|
||
void const58() {
|
||
checkConst("struct MyObject {\n"
|
||
" void foo(Foo f) {\n"
|
||
" f.clear();\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'MyObject::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("struct MyObject {\n"
|
||
" int foo(Foo f) {\n"
|
||
" return f.length();\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'MyObject::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("struct MyObject {\n"
|
||
" Foo f;\n"
|
||
" int foo() {\n"
|
||
" return f.length();\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("struct MyObject {\n"
|
||
" std::string f;\n"
|
||
" int foo() {\n"
|
||
" return f.length();\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'MyObject::foo' can be const.\n", errout.str());
|
||
}
|
||
|
||
void const59() { // ticket #4646
|
||
checkConst("class C {\n"
|
||
"public:\n"
|
||
" inline void operator += (const int &x ) { re += x; }\n"
|
||
" friend inline void exp(C & c, const C & x) { }\n"
|
||
"protected:\n"
|
||
" int re;\n"
|
||
" int im;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const60() { // ticket #3322
|
||
checkConst("class MyString {\n"
|
||
"public:\n"
|
||
" MyString() : m_ptr(0){}\n"
|
||
" MyString& operator+=( const MyString& rhs ) {\n"
|
||
" delete m_ptr;\n"
|
||
" m_ptr = new char[42];\n"
|
||
" }\n"
|
||
" MyString append( const MyString& str )\n"
|
||
" { return operator+=( str ); } \n"
|
||
" char *m_ptr;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
checkConst("class MyString {\n"
|
||
"public:\n"
|
||
" MyString() : m_ptr(0){}\n"
|
||
" MyString& operator+=( const MyString& rhs );\n"
|
||
" MyString append( const MyString& str )\n"
|
||
" { return operator+=( str ); } \n"
|
||
" char *m_ptr;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const61() { // ticket #5606 - don't crash
|
||
checkConst("class MixerParticipant : public MixerParticipant {\n"
|
||
" int GetAudioFrame();\n"
|
||
"};\n"
|
||
"int MixerParticipant::GetAudioFrame() {\n"
|
||
" return 0;\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class MixerParticipant : public MixerParticipant {\n"
|
||
" bool InitializeFileReader() {\n"
|
||
" printf(\"music\");\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// Based on an example from SVN source code causing an endless recursion within CheckClass::isConstMemberFunc()
|
||
// A more complete example including a template declaration like
|
||
// template<typename K> class Hash{/* ... */};
|
||
// didn't .
|
||
checkConst("template<>\n"
|
||
"class Hash<void> {\n"
|
||
"protected:\n"
|
||
" typedef Key::key_type key_type;\n"
|
||
" void set(const Key& key);\n"
|
||
"};\n"
|
||
"template<typename K, int KeySize>\n"
|
||
"class Hash : private Hash<void> {\n"
|
||
" typedef Hash<void> inherited;\n"
|
||
" void set(const Key& key) {\n"
|
||
" inherited::set(inherited::Key(key));\n"
|
||
" }\n"
|
||
"};\n", nullptr, false);
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const62() {
|
||
checkConst("class A {\n"
|
||
" private:\n"
|
||
" std::unordered_map<unsigned int,unsigned int> _hash;\n"
|
||
" public:\n"
|
||
" A() : _hash() {}\n"
|
||
" unsigned int fetch(unsigned int key)\n" // cannot be 'const'
|
||
" {\n"
|
||
" return _hash[key];\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const63() {
|
||
checkConst("struct A {\n"
|
||
" std::string s;\n"
|
||
" void clear() {\n"
|
||
" std::string* p = &s;\n"
|
||
" p->clear();\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("struct A {\n"
|
||
" std::string s;\n"
|
||
" void clear() {\n"
|
||
" std::string& r = s;\n"
|
||
" r.clear();\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("struct A {\n"
|
||
" std::string s;\n"
|
||
" void clear() {\n"
|
||
" std::string& r = sth; r = s;\n"
|
||
" r.clear();\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'A::clear' can be const.\n", errout.str());
|
||
|
||
checkConst("struct A {\n"
|
||
" std::string s;\n"
|
||
" void clear() {\n"
|
||
" const std::string* p = &s;\n"
|
||
" p->somefunction();\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'A::clear' can be const.\n", errout.str());
|
||
|
||
checkConst("struct A {\n"
|
||
" std::string s;\n"
|
||
" void clear() {\n"
|
||
" const std::string& r = s;\n"
|
||
" r.somefunction();\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'A::clear' can be const.\n", errout.str());
|
||
}
|
||
|
||
void const64() {
|
||
checkConst("namespace B {\n"
|
||
" namespace D {\n"
|
||
" typedef int DKIPtr;\n"
|
||
" }\n"
|
||
" class ZClass {\n"
|
||
" void set(const ::B::D::DKIPtr& p) {\n"
|
||
" membervariable = p;\n"
|
||
" }\n"
|
||
" ::B::D::DKIPtr membervariable;\n"
|
||
" };\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const65() {
|
||
checkConst("template <typename T>\n"
|
||
"class TemplateClass {\n"
|
||
"public:\n"
|
||
" TemplateClass() { }\n"
|
||
"};\n"
|
||
"template <>\n"
|
||
"class TemplateClass<float> {\n"
|
||
"public:\n"
|
||
" TemplateClass() { }\n"
|
||
"};\n"
|
||
"int main() {\n"
|
||
" TemplateClass<int> a;\n"
|
||
" TemplateClass<float> b;\n"
|
||
" return 0;\n"
|
||
"}\n");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const66() {
|
||
checkConst("struct C {\n"
|
||
" C() : n(0) {}\n"
|
||
" void f(int v) { g((char *) &v); }\n"
|
||
" void g(char *) { n++; }\n"
|
||
" int n;\n"
|
||
"};\n");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const67() { // #9193
|
||
checkConst("template <class VALUE_T, class LIST_T = std::list<VALUE_T> >\n"
|
||
"class TestList {\n"
|
||
"public:\n"
|
||
" LIST_T m_list;\n"
|
||
"};\n"
|
||
"class Test {\n"
|
||
"public:\n"
|
||
" const std::list<std::shared_ptr<int>>& get() { return m_test.m_list; }\n"
|
||
" TestList<std::shared_ptr<int>> m_test;\n"
|
||
"};\n");
|
||
ASSERT_EQUALS("[test.cpp:8]: (style, inconclusive) Technically the member function 'Test::get' can be const.\n", errout.str());
|
||
}
|
||
|
||
void const68() { // #6471
|
||
checkConst("class MyClass {\n"
|
||
" void clear() {\n"
|
||
" SVecPtr v = (SVecPtr) m_data;\n"
|
||
" v->clear();\n"
|
||
" }\n"
|
||
" void* m_data;\n"
|
||
"};\n");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void const_handleDefaultParameters() {
|
||
checkConst("struct Foo {\n"
|
||
" void foo1(int i, int j = 0) {\n"
|
||
" return func(this);\n"
|
||
" }\n"
|
||
" int bar1() {\n"
|
||
" return foo1(1);\n"
|
||
" }\n"
|
||
" int bar2() {\n"
|
||
" return foo1(1, 2);\n"
|
||
" }\n"
|
||
" int bar3() {\n"
|
||
" return foo1(1, 2, 3);\n"
|
||
" }\n"
|
||
" int bar4() {\n"
|
||
" return foo1();\n"
|
||
" }\n"
|
||
" void foo2(int i = 0) {\n"
|
||
" return func(this);\n"
|
||
" }\n"
|
||
" int bar5() {\n"
|
||
" return foo2();\n"
|
||
" }\n"
|
||
" void foo3() {\n"
|
||
" return func(this);\n"
|
||
" }\n"
|
||
" int bar6() {\n"
|
||
" return foo3();\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:11]: (performance, inconclusive) Technically the member function 'Foo::bar3' can be static (but you may consider moving to unnamed namespace).\n"
|
||
"[test.cpp:14]: (performance, inconclusive) Technically the member function 'Foo::bar4' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
}
|
||
|
||
void const_passThisToMemberOfOtherClass() {
|
||
checkConst("struct Foo {\n"
|
||
" void foo() {\n"
|
||
" Bar b;\n"
|
||
" b.takeFoo(this);\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("struct Foo {\n"
|
||
" void foo() {\n"
|
||
" Foo f;\n"
|
||
" f.foo();\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'Foo::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("struct A;\n" // #5839 - operator()
|
||
"struct B {\n"
|
||
" void operator()(A *a);\n"
|
||
"};\n"
|
||
"struct A {\n"
|
||
" void dostuff() {\n"
|
||
" B()(this);\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void assigningPointerToPointerIsNotAConstOperation() {
|
||
checkConst("struct s\n"
|
||
"{\n"
|
||
" int** v;\n"
|
||
" void f()\n"
|
||
" {\n"
|
||
" v = 0;\n"
|
||
" }\n"
|
||
"};\n"
|
||
);
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void assigningArrayElementIsNotAConstOperation() {
|
||
checkConst("struct s\n"
|
||
"{\n"
|
||
" ::std::string v[3];\n"
|
||
" void f()\n"
|
||
" {\n"
|
||
" v[0] = \"Happy new year!\";\n"
|
||
" }\n"
|
||
"};\n"
|
||
);
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
// increment/decrement => not const
|
||
void constincdec() {
|
||
checkConst("class Fred {\n"
|
||
" int a;\n"
|
||
" void nextA() { return ++a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" int a;\n"
|
||
" void nextA() { return --a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" int a;\n"
|
||
" void nextA() { return a++; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" int a;\n"
|
||
" void nextA() { return a--; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("int a;\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return ++a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("int a;\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return --a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("int a;\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return a++; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("int a;\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return a--; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
}
|
||
|
||
void constassign1() {
|
||
checkConst("class Fred {\n"
|
||
" int a;\n"
|
||
" void nextA() { return a=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" int a;\n"
|
||
" void nextA() { return a-=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" int a;\n"
|
||
" void nextA() { return a+=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" int a;\n"
|
||
" void nextA() { return a*=-1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" int a;\n"
|
||
" void nextA() { return a/=-2; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("int a;\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return a=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("int a;\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return a-=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("int a;\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return a+=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("int a;\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return a*=-1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("int a;\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return a/=-2; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
}
|
||
|
||
void constassign2() {
|
||
checkConst("class Fred {\n"
|
||
" struct A { int a; } s;\n"
|
||
" void nextA() { return s.a=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" struct A { int a; } s;\n"
|
||
" void nextA() { return s.a-=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" struct A { int a; } s;\n"
|
||
" void nextA() { return s.a+=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" struct A { int a; } s;\n"
|
||
" void nextA() { return s.a*=-1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("struct A { int a; } s;\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return s.a=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("struct A { int a; } s;\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return s.a-=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("struct A { int a; } s;\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return s.a+=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("struct A { int a; } s;\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return s.a*=-1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("struct A { int a; } s;\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return s.a/=-2; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("struct A { int a; };\n"
|
||
"class Fred {\n"
|
||
" A s;\n"
|
||
" void nextA() { return s.a=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("struct A { int a; };\n"
|
||
"class Fred {\n"
|
||
" A s;\n"
|
||
" void nextA() { return s.a-=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("struct A { int a; };\n"
|
||
"class Fred {\n"
|
||
" A s;\n"
|
||
" void nextA() { return s.a+=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("struct A { int a; };\n"
|
||
"class Fred {\n"
|
||
" A s;\n"
|
||
" void nextA() { return s.a*=-1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("struct A { int a; };\n"
|
||
"class Fred {\n"
|
||
" A s;\n"
|
||
" void nextA() { return s.a/=-2; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
// increment/decrement array element => not const
|
||
void constincdecarray() {
|
||
checkConst("class Fred {\n"
|
||
" int a[2];\n"
|
||
" void nextA() { return ++a[0]; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" int a[2];\n"
|
||
" void nextA() { return --a[0]; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" int a[2];\n"
|
||
" void nextA() { return a[0]++; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" int a[2];\n"
|
||
" void nextA() { return a[0]--; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("int a[2];\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return ++a[0]; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("int a[2];\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return --a[0]; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("int a[2];\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return a[0]++; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("int a[2];\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return a[0]--; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
}
|
||
|
||
void constassignarray() {
|
||
checkConst("class Fred {\n"
|
||
" int a[2];\n"
|
||
" void nextA() { return a[0]=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" int a[2];\n"
|
||
" void nextA() { return a[0]-=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" int a[2];\n"
|
||
" void nextA() { return a[0]+=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" int a[2];\n"
|
||
" void nextA() { return a[0]*=-1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class Fred {\n"
|
||
" int a[2];\n"
|
||
" void nextA() { return a[0]/=-2; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("int a[2];\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return a[0]=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("int a[2];\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return a[0]-=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("int a[2];\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return a[0]+=1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("int a[2];\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return a[0]*=-1; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst("int a[2];\n"
|
||
"class Fred {\n"
|
||
" void nextA() { return a[0]/=-2; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
}
|
||
|
||
// return pointer/reference => not const
|
||
void constReturnReference() {
|
||
checkConst("class Fred {\n"
|
||
" int a;\n"
|
||
" int &getR() { return a; }\n"
|
||
" int *getP() { return &a; }"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
// delete member variable => not const (but technically it can, it compiles without errors)
|
||
void constDelete() {
|
||
checkConst("class Fred {\n"
|
||
" int *a;\n"
|
||
" void clean() { delete a; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
// A function that returns unknown types can't be const (#1579)
|
||
void constLPVOID() {
|
||
checkConst("class Fred {\n"
|
||
" UNKNOWN a() { return 0; };\n"
|
||
"};");
|
||
TODO_ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'Fred::a' can be static.\n", "", errout.str());
|
||
|
||
// #1579 - HDC
|
||
checkConst("class Fred {\n"
|
||
" foo bar;\n"
|
||
" UNKNOWN a() { return b; };\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
// a function that calls const functions can be const
|
||
void constFunc() {
|
||
checkConst("class Fred {\n"
|
||
" void f() const { };\n"
|
||
" void a() { f(); };\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'Fred::f' can be static (but you may consider moving to unnamed namespace).\n"
|
||
"[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::a' can be const.\n", errout.str());
|
||
|
||
// ticket #1593
|
||
checkConst("class A\n"
|
||
"{\n"
|
||
" std::vector<int> m_v;\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" unsigned int GetVecSize() {return m_v.size();}\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:6]: (style, inconclusive) Technically the member function 'A::GetVecSize' can be const.\n", errout.str());
|
||
|
||
checkConst("class A\n"
|
||
"{\n"
|
||
" std::vector<int> m_v;\n"
|
||
"public:\n"
|
||
" A(){}\n"
|
||
" bool GetVecEmpty() {return m_v.empty();}\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:6]: (style, inconclusive) Technically the member function 'A::GetVecEmpty' can be const.\n", errout.str());
|
||
}
|
||
|
||
void constVirtualFunc() {
|
||
// base class has no virtual function
|
||
checkConst("class A { };\n"
|
||
"class B : public A {\n"
|
||
" int b;\n"
|
||
"public:\n"
|
||
" B() : b(0) { }\n"
|
||
" int func() { return b; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:6]: (style, inconclusive) Technically the member function 'B::func' can be const.\n", errout.str());
|
||
|
||
checkConst("class A { };\n"
|
||
"class B : public A {\n"
|
||
" int b;\n"
|
||
"public:\n"
|
||
" B() : b(0) { }\n"
|
||
" int func();\n"
|
||
"};\n"
|
||
"int B::func() { return b; }");
|
||
ASSERT_EQUALS("[test.cpp:8] -> [test.cpp:6]: (style, inconclusive) Technically the member function 'B::func' can be const.\n", errout.str());
|
||
|
||
// base class has no virtual function
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" int func();\n"
|
||
"};\n"
|
||
"class B : public A {\n"
|
||
" int b;\n"
|
||
"public:\n"
|
||
" B() : b(0) { }\n"
|
||
" int func() { return b; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:9]: (style, inconclusive) Technically the member function 'B::func' can be const.\n", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" int func();\n"
|
||
"};\n"
|
||
"class B : public A {\n"
|
||
" int b;\n"
|
||
"public:\n"
|
||
" B() : b(0) { }\n"
|
||
" int func();\n"
|
||
"};\n"
|
||
"int B::func() { return b; }");
|
||
ASSERT_EQUALS("[test.cpp:11] -> [test.cpp:9]: (style, inconclusive) Technically the member function 'B::func' can be const.\n", errout.str());
|
||
|
||
// base class has virtual function
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" virtual int func();\n"
|
||
"};\n"
|
||
"class B : public A {\n"
|
||
" int b;\n"
|
||
"public:\n"
|
||
" B() : b(0) { }\n"
|
||
" int func() { return b; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" virtual int func();\n"
|
||
"};\n"
|
||
"class B : public A {\n"
|
||
" int b;\n"
|
||
"public:\n"
|
||
" B() : b(0) { }\n"
|
||
" int func();\n"
|
||
"};\n"
|
||
"int B::func() { return b; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
"public:\n"
|
||
" virtual int func() = 0;\n"
|
||
"};\n"
|
||
"class B : public A {\n"
|
||
" int b;\n"
|
||
"public:\n"
|
||
" B() : b(0) { }\n"
|
||
" int func();\n"
|
||
"};\n"
|
||
"int B::func() { return b; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// base class has no virtual function
|
||
checkConst("class A {\n"
|
||
" int a;\n"
|
||
"public:\n"
|
||
" A() : a(0) { }\n"
|
||
" int func() { return a; }\n"
|
||
"};\n"
|
||
"class B : public A {\n"
|
||
" int b;\n"
|
||
"public:\n"
|
||
" B() : b(0) { }\n"
|
||
" int func() { return b; }\n"
|
||
"};\n"
|
||
"class C : public B {\n"
|
||
" int c;\n"
|
||
"public:\n"
|
||
" C() : c(0) { }\n"
|
||
" int func() { return c; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:5]: (style, inconclusive) Technically the member function 'A::func' can be const.\n"
|
||
"[test.cpp:11]: (style, inconclusive) Technically the member function 'B::func' can be const.\n"
|
||
"[test.cpp:17]: (style, inconclusive) Technically the member function 'C::func' can be const.\n", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
" int a;\n"
|
||
"public:\n"
|
||
" A() : a(0) { }\n"
|
||
" int func();\n"
|
||
"};\n"
|
||
"int A::func() { return a; }\n"
|
||
"class B : public A {\n"
|
||
" int b;\n"
|
||
"public:\n"
|
||
" B() : b(0) { }\n"
|
||
" int func();\n"
|
||
"};\n"
|
||
"int B::func() { return b; }\n"
|
||
"class C : public B {\n"
|
||
" int c;\n"
|
||
"public:\n"
|
||
" C() : c(0) { }\n"
|
||
" int func();\n"
|
||
"};\n"
|
||
"int C::func() { return c; }");
|
||
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:5]: (style, inconclusive) Technically the member function 'A::func' can be const.\n"
|
||
"[test.cpp:14] -> [test.cpp:12]: (style, inconclusive) Technically the member function 'B::func' can be const.\n"
|
||
"[test.cpp:21] -> [test.cpp:19]: (style, inconclusive) Technically the member function 'C::func' can be const.\n", errout.str());
|
||
|
||
// base class has virtual function
|
||
checkConst("class A {\n"
|
||
" int a;\n"
|
||
"public:\n"
|
||
" A() : a(0) { }\n"
|
||
" virtual int func() { return a; }\n"
|
||
"};\n"
|
||
"class B : public A {\n"
|
||
" int b;\n"
|
||
"public:\n"
|
||
" B() : b(0) { }\n"
|
||
" int func() { return b; }\n"
|
||
"};\n"
|
||
"class C : public B {\n"
|
||
" int c;\n"
|
||
"public:\n"
|
||
" C() : c(0) { }\n"
|
||
" int func() { return c; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkConst("class A {\n"
|
||
" int a;\n"
|
||
"public:\n"
|
||
" A() : a(0) { }\n"
|
||
" virtual int func();\n"
|
||
"};\n"
|
||
"int A::func() { return a; }\n"
|
||
"class B : public A {\n"
|
||
" int b;\n"
|
||
"public:\n"
|
||
" B() : b(0) { }\n"
|
||
" int func();\n"
|
||
"};\n"
|
||
"int B::func() { return b; }\n"
|
||
"class C : public B {\n"
|
||
" int c;\n"
|
||
"public:\n"
|
||
" C() : c(0) { }\n"
|
||
" int func();\n"
|
||
"};\n"
|
||
"int C::func() { return c; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// ticket #1311
|
||
checkConst("class X {\n"
|
||
" int x;\n"
|
||
"public:\n"
|
||
" X(int x) : x(x) { }\n"
|
||
" int getX() { return x; }\n"
|
||
"};\n"
|
||
"class Y : public X {\n"
|
||
" int y;\n"
|
||
"public:\n"
|
||
" Y(int x, int y) : X(x), y(y) { }\n"
|
||
" int getY() { return y; }\n"
|
||
"};\n"
|
||
"class Z : public Y {\n"
|
||
" int z;\n"
|
||
"public:\n"
|
||
" Z(int x, int y, int z) : Y(x, y), z(z) { }\n"
|
||
" int getZ() { return z; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:5]: (style, inconclusive) Technically the member function 'X::getX' can be const.\n"
|
||
"[test.cpp:11]: (style, inconclusive) Technically the member function 'Y::getY' can be const.\n"
|
||
"[test.cpp:17]: (style, inconclusive) Technically the member function 'Z::getZ' can be const.\n", errout.str());
|
||
|
||
checkConst("class X {\n"
|
||
" int x;\n"
|
||
"public:\n"
|
||
" X(int x) : x(x) { }\n"
|
||
" int getX();\n"
|
||
"};\n"
|
||
"int X::getX() { return x; }\n"
|
||
"class Y : public X {\n"
|
||
" int y;\n"
|
||
"public:\n"
|
||
" Y(int x, int y) : X(x), y(y) { }\n"
|
||
" int getY();\n"
|
||
"};\n"
|
||
"int Y::getY() { return y; }\n"
|
||
"class Z : public Y {\n"
|
||
" int z;\n"
|
||
"public:\n"
|
||
" Z(int x, int y, int z) : Y(x, y), z(z) { }\n"
|
||
" int getZ();\n"
|
||
"};\n"
|
||
"int Z::getZ() { return z; }");
|
||
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:5]: (style, inconclusive) Technically the member function 'X::getX' can be const.\n"
|
||
"[test.cpp:14] -> [test.cpp:12]: (style, inconclusive) Technically the member function 'Y::getY' can be const.\n"
|
||
"[test.cpp:21] -> [test.cpp:19]: (style, inconclusive) Technically the member function 'Z::getZ' can be const.\n", errout.str());
|
||
}
|
||
|
||
void constIfCfg() {
|
||
const char code[] = "struct foo {\n"
|
||
" int i;\n"
|
||
" void f() {\n"
|
||
//"#ifdef ABC\n"
|
||
//" i = 4;\n"
|
||
//"endif\n"
|
||
" }\n"
|
||
"};";
|
||
|
||
checkConst(code, &settings0, true);
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'foo::f' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
|
||
|
||
checkConst(code, &settings0, false); // TODO: Set inconclusive to true (preprocess it)
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void constFriend() { // ticket #1921
|
||
const char code[] = "class foo {\n"
|
||
" friend void f() { }\n"
|
||
"};";
|
||
checkConst(code);
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void constUnion() { // ticket #2111
|
||
checkConst("class foo {\n"
|
||
"public:\n"
|
||
" union {\n"
|
||
" int i;\n"
|
||
" float f;\n"
|
||
" } d;\n"
|
||
" void setf(float x) {\n"
|
||
" d.f = x;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void constArrayOperator() {
|
||
checkConst("struct foo {\n"
|
||
" int x;\n"
|
||
" int y[5][724];\n"
|
||
" T a() {\n"
|
||
" return y[x++][6];\n"
|
||
" }\n"
|
||
" T b() {\n"
|
||
" return y[1][++x];\n"
|
||
" }\n"
|
||
" T c() {\n"
|
||
" return y[1][6];\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:10]: (style, inconclusive) Technically the member function 'foo::c' can be const.\n", errout.str());
|
||
}
|
||
|
||
void constRangeBasedFor() { // #5514
|
||
checkConst("class Fred {\n"
|
||
" int array[256];\n"
|
||
"public:\n"
|
||
" void f1() {\n"
|
||
" for (auto & e : array)\n"
|
||
" foo(e);\n"
|
||
" }\n"
|
||
" void f2() {\n"
|
||
" for (const auto & e : array)\n"
|
||
" foo(e);\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:8]: (style, inconclusive) Technically the member function 'Fred::f2' can be const.\n", errout.str());
|
||
}
|
||
|
||
void const_shared_ptr() { // #8674
|
||
checkConst("class Fred {\n"
|
||
"public:\n"
|
||
" std::shared_ptr<Data> getData();\n"
|
||
"private:\n"
|
||
" std::shared_ptr<Data> data;\n"
|
||
"};\n"
|
||
"\n"
|
||
"std::shared_ptr<Data> Fred::getData() { return data; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void constPtrToConstPtr() {
|
||
checkConst("class Fred {\n"
|
||
"public:\n"
|
||
" const char *const *data;\n"
|
||
" const char *const *getData() { return data; }\n}");
|
||
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::getData' can be const.\n", errout.str());
|
||
}
|
||
|
||
void constTrailingReturnType() { // #9814
|
||
checkConst("struct A {\n"
|
||
" int x = 1;\n"
|
||
" auto get() -> int & { return x; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void checkInitializerListOrder(const char code[]) {
|
||
// Clear the error log
|
||
errout.str("");
|
||
|
||
// Check..
|
||
settings0.inconclusive = true;
|
||
|
||
// Tokenize..
|
||
Tokenizer tokenizer(&settings0, this);
|
||
std::istringstream istr(code);
|
||
tokenizer.tokenize(istr, "test.cpp");
|
||
|
||
CheckClass checkClass(&tokenizer, &settings0, this);
|
||
checkClass.initializerListOrder();
|
||
}
|
||
|
||
void initializerListOrder() {
|
||
checkInitializerListOrder("class Fred {\n"
|
||
" int a, b, c;\n"
|
||
"public:\n"
|
||
" Fred() : c(0), b(0), a(0) { }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4] -> [test.cpp:2]: (style, inconclusive) Member variable 'Fred::b' is in the wrong place in the initializer list.\n"
|
||
"[test.cpp:4] -> [test.cpp:2]: (style, inconclusive) Member variable 'Fred::a' is in the wrong place in the initializer list.\n", errout.str());
|
||
|
||
checkInitializerListOrder("class Fred {\n"
|
||
" int a, b, c;\n"
|
||
"public:\n"
|
||
" Fred() : c{0}, b{0}, a{0} { }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4] -> [test.cpp:2]: (style, inconclusive) Member variable 'Fred::b' is in the wrong place in the initializer list.\n"
|
||
"[test.cpp:4] -> [test.cpp:2]: (style, inconclusive) Member variable 'Fred::a' is in the wrong place in the initializer list.\n", errout.str());
|
||
}
|
||
|
||
void checkInitializationListUsage(const char code[]) {
|
||
// Clear the error log
|
||
errout.str("");
|
||
|
||
// Check..
|
||
Settings settings;
|
||
settings.addEnabled("performance");
|
||
|
||
// Tokenize..
|
||
Tokenizer tokenizer(&settings, this);
|
||
std::istringstream istr(code);
|
||
tokenizer.tokenize(istr, "test.cpp");
|
||
|
||
CheckClass checkClass(&tokenizer, &settings, this);
|
||
checkClass.initializationListUsage();
|
||
}
|
||
|
||
void initializerListUsage() {
|
||
checkInitializationListUsage("enum Enum { C = 0 };\n"
|
||
"class Fred {\n"
|
||
" int a;\n" // No message for builtin types: No performance gain
|
||
" int* b;\n" // No message for pointers: No performance gain
|
||
" Enum c;\n" // No message for enums: No performance gain
|
||
" Fred() { a = 0; b = 0; c = C; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkInitializationListUsage("class Fred {\n"
|
||
" std::string s;\n"
|
||
" Fred() { a = 0; s = \"foo\"; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance) Variable 's' is assigned in constructor body. Consider performing initialization in initialization list.\n", errout.str());
|
||
|
||
checkInitializationListUsage("class Fred {\n"
|
||
" std::string& s;\n" // Message is invalid for references, since their initialization in initializer list is required anyway and behaves different from assignment (#5004)
|
||
" Fred(const std::string& s_) : s(s_) { s = \"foo\"; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkInitializationListUsage("class Fred {\n"
|
||
" std::vector<int> v;\n"
|
||
" Fred() { v = unknown; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance) Variable 'v' is assigned in constructor body. Consider performing initialization in initialization list.\n", errout.str());
|
||
|
||
checkInitializationListUsage("class C { std::string s; };\n"
|
||
"class Fred {\n"
|
||
" C c;\n"
|
||
" Fred() { c = unknown; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (performance) Variable 'c' is assigned in constructor body. Consider performing initialization in initialization list.\n", errout.str());
|
||
|
||
checkInitializationListUsage("class C;\n"
|
||
"class Fred {\n"
|
||
" C c;\n"
|
||
" Fred() { c = unknown; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (performance) Variable 'c' is assigned in constructor body. Consider performing initialization in initialization list.\n", errout.str());
|
||
|
||
checkInitializationListUsage("class C;\n"
|
||
"class Fred {\n"
|
||
" C c;\n"
|
||
" Fred(Fred const & other) { c = other.c; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (performance) Variable 'c' is assigned in constructor body. Consider performing initialization in initialization list.\n", errout.str());
|
||
|
||
checkInitializationListUsage("class C;\n"
|
||
"class Fred {\n"
|
||
" C c;\n"
|
||
" Fred(Fred && other) { c = other.c; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4]: (performance) Variable 'c' is assigned in constructor body. Consider performing initialization in initialization list.\n", errout.str());
|
||
|
||
checkInitializationListUsage("class C;\n"
|
||
"class Fred {\n"
|
||
" C a;\n"
|
||
" Fred() { initB(); a = b; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkInitializationListUsage("class C;\n"
|
||
"class Fred {\n"
|
||
" C a;\n"
|
||
" Fred() : a(0) { if(b) a = 0; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkInitializationListUsage("class C;\n"
|
||
"class Fred {\n"
|
||
" C a[5];\n"
|
||
" Fred() { for(int i = 0; i < 5; i++) a[i] = 0; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkInitializationListUsage("class C;\n"
|
||
"class Fred {\n"
|
||
" C a; int b;\n"
|
||
" Fred() : b(5) { a = b; }\n" // Don't issue a message here: You actually could move it to the initialization list, but it would cause problems if you change the order of the variable declarations.
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkInitializationListUsage("class C;\n"
|
||
"class Fred {\n"
|
||
" C a;\n"
|
||
" Fred() { try { a = new int; } catch(...) {} }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkInitializationListUsage("class Fred {\n"
|
||
" std::string s;\n"
|
||
" Fred() { s = toString((size_t)this); }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkInitializationListUsage("class Fred {\n"
|
||
" std::string a;\n"
|
||
" std::string foo();\n"
|
||
" Fred() { a = foo(); }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkInitializationListUsage("class Fred {\n"
|
||
" std::string a;\n"
|
||
" Fred() { a = foo(); }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (performance) Variable 'a' is assigned in constructor body. Consider performing initialization in initialization list.\n", errout.str());
|
||
|
||
checkInitializationListUsage("class Fred {\n" // #4332
|
||
" static std::string s;\n"
|
||
" Fred() { s = \"foo\"; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkInitializationListUsage("class Fred {\n" // #5640
|
||
" std::string s;\n"
|
||
" Fred() {\n"
|
||
" char str[2];\n"
|
||
" str[0] = c;\n"
|
||
" str[1] = 0;\n"
|
||
" s = str;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkInitializationListUsage("class B {\n" // #5640
|
||
" std::shared_ptr<A> _d;\n"
|
||
" B(const B& other) : _d(std::make_shared<A>()) {\n"
|
||
" *_d = *other._d;\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkInitializationListUsage("class Bar {\n" // #8466
|
||
"public:\n"
|
||
" explicit Bar(const Bar &bar) : Bar{bar.s} {}\n"
|
||
" explicit Bar(const char s) : s{s} {}\n"
|
||
"private:\n"
|
||
" char s;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkInitializationListUsage("unsigned bar(std::string);\n" // #8291
|
||
"class Foo {\n"
|
||
"public:\n"
|
||
" int a_, b_;\n"
|
||
" Foo(int a, int b) : a_(a), b_(b) {}\n"
|
||
" Foo(int a, const std::string& b) : Foo(a, bar(b)) {}\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkInitializationListUsage("class Fred {\n" // #8111
|
||
" std::string a;\n"
|
||
" Fred() {\n"
|
||
" std::ostringstream ostr;\n"
|
||
" ostr << x;\n"
|
||
" a = ostr.str();\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// bailout: multi line lambda in rhs => do not warn
|
||
checkInitializationListUsage("class Fred {\n"
|
||
" std::function f;\n"
|
||
" Fred() {\n"
|
||
" f = [](){\n"
|
||
" return 1;\n"
|
||
" };\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// don't warn if some other instance's members are assigned to
|
||
checkInitializationListUsage("class C {\n"
|
||
"public:\n"
|
||
" C(C& c) : m_i(c.m_i) { c.m_i = (Foo)-1; }\n"
|
||
"private:\n"
|
||
" Foo m_i;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
|
||
void checkSelfInitialization(const char code []) {
|
||
// Clear the error log
|
||
errout.str("");
|
||
|
||
// Tokenize..
|
||
Tokenizer tokenizer(&settings0, this);
|
||
std::istringstream istr(code);
|
||
tokenizer.tokenize(istr, "test.cpp");
|
||
|
||
CheckClass checkClass(&tokenizer, &settings0, this);
|
||
checkClass.checkSelfInitialization();
|
||
}
|
||
|
||
void selfInitialization() {
|
||
checkSelfInitialization("class Fred {\n"
|
||
" int i;\n"
|
||
" Fred() : i(i) {\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (error) Member variable 'i' is initialized by itself.\n", errout.str());
|
||
|
||
checkSelfInitialization("class Fred {\n"
|
||
" int i;\n"
|
||
" Fred() : i{i} {\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (error) Member variable 'i' is initialized by itself.\n", errout.str());
|
||
|
||
checkSelfInitialization("class Fred {\n"
|
||
" int i;\n"
|
||
" Fred();\n"
|
||
"};\n"
|
||
"Fred::Fred() : i(i) {\n"
|
||
"}");
|
||
ASSERT_EQUALS("[test.cpp:5]: (error) Member variable 'i' is initialized by itself.\n", errout.str());
|
||
|
||
checkSelfInitialization("class Fred {\n"
|
||
" std::string s;\n"
|
||
" Fred() : s(s) {\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3]: (error) Member variable 's' is initialized by itself.\n", errout.str());
|
||
|
||
checkSelfInitialization("class Fred {\n"
|
||
" int x;\n"
|
||
" Fred(int x);\n"
|
||
"};\n"
|
||
"Fred::Fred(int x) : x(x) { }\n"
|
||
);
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkSelfInitialization("class Fred {\n"
|
||
" int x;\n"
|
||
" Fred(int x);\n"
|
||
"};\n"
|
||
"Fred::Fred(int x) : x{x} { }\n"
|
||
);
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkSelfInitialization("class Fred {\n"
|
||
" std::string s;\n"
|
||
" Fred(const std::string& s) : s(s) {\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkSelfInitialization("class Fred {\n"
|
||
" std::string s;\n"
|
||
" Fred(const std::string& s) : s{s} {\n"
|
||
" }\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkSelfInitialization("struct Foo : Bar {\n"
|
||
" int i;\n"
|
||
" Foo(int i)\n"
|
||
" : Bar(""), i(i) {}\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkSelfInitialization("struct Foo : std::Bar {\n" // #6073
|
||
" int i;\n"
|
||
" Foo(int i)\n"
|
||
" : std::Bar(""), i(i) {}\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkSelfInitialization("struct Foo : std::Bar {\n" // #6073
|
||
" int i;\n"
|
||
" Foo(int i)\n"
|
||
" : std::Bar(""), i{i} {}\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void checkVirtualFunctionCall(const char code[], Settings *s = nullptr, bool inconclusive = true) {
|
||
// Clear the error log
|
||
errout.str("");
|
||
|
||
// Check..
|
||
if (!s) {
|
||
static Settings settings_;
|
||
s = &settings_;
|
||
s->addEnabled("warning");
|
||
}
|
||
s->inconclusive = inconclusive;
|
||
|
||
// Tokenize..
|
||
Tokenizer tokenizer(s, this);
|
||
std::istringstream istr(code);
|
||
tokenizer.tokenize(istr, "test.cpp");
|
||
|
||
CheckClass checkClass(&tokenizer, s, this);
|
||
checkClass.checkVirtualFunctionCallInConstructor();
|
||
}
|
||
|
||
void virtualFunctionCallInConstructor() {
|
||
checkVirtualFunctionCall("class A\n"
|
||
"{\n"
|
||
" virtual int f() { return 1; }\n"
|
||
" A();\n"
|
||
"};\n"
|
||
"A::A()\n"
|
||
"{f();}\n");
|
||
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:3]: (style) Virtual function 'f' is called from constructor 'A()' at line 7. Dynamic binding is not used.\n", errout.str());
|
||
|
||
checkVirtualFunctionCall("class A {\n"
|
||
" virtual int f();\n"
|
||
" A() {f();}\n"
|
||
"};\n"
|
||
"int A::f() { return 1; }\n");
|
||
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:2]: (style) Virtual function 'f' is called from constructor 'A()' at line 3. Dynamic binding is not used.\n", errout.str());
|
||
|
||
checkVirtualFunctionCall("class A : B {\n"
|
||
" int f() override;\n"
|
||
" A() {f();}\n"
|
||
"};\n"
|
||
"int A::f() { return 1; }\n");
|
||
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:2]: (style) Virtual function 'f' is called from constructor 'A()' at line 3. Dynamic binding is not used.\n", errout.str());
|
||
|
||
checkVirtualFunctionCall("class B {\n"
|
||
" virtual int f() = 0;\n"
|
||
"};\n"
|
||
"class A : B {\n"
|
||
" int f();\n"
|
||
" A() {f();}\n"
|
||
"};\n"
|
||
"int A::f() { return 1; }\n");
|
||
ASSERT_EQUALS("[test.cpp:6] -> [test.cpp:5]: (style) Virtual function 'f' is called from constructor 'A()' at line 6. Dynamic binding is not used.\n", errout.str());
|
||
|
||
checkVirtualFunctionCall("class A\n"
|
||
"{\n"
|
||
" A() { A::f(); }\n"
|
||
" virtual void f() {}\n"
|
||
"};\n");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void pureVirtualFunctionCall() {
|
||
checkVirtualFunctionCall("class A\n"
|
||
"{\n"
|
||
" virtual void pure()=0;\n"
|
||
" A();\n"
|
||
"};\n"
|
||
"A::A()\n"
|
||
"{pure();}\n");
|
||
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:3]: (warning) Call of pure virtual function 'pure' in constructor.\n", errout.str());
|
||
|
||
checkVirtualFunctionCall("class A\n"
|
||
"{\n"
|
||
" virtual int pure()=0;\n"
|
||
" A();\n"
|
||
" int m;\n"
|
||
"};\n"
|
||
"A::A():m(A::pure())\n"
|
||
"{}\n");
|
||
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:3]: (warning) Call of pure virtual function 'pure' in constructor.\n", errout.str());
|
||
|
||
checkVirtualFunctionCall("class A\n"
|
||
" {\n"
|
||
" virtual void pure()=0; \n"
|
||
" virtual ~A(); \n"
|
||
" int m; \n"
|
||
"};\n"
|
||
"A::~A()\n"
|
||
"{pure();}\n");
|
||
ASSERT_EQUALS("[test.cpp:8] -> [test.cpp:3]: (warning) Call of pure virtual function 'pure' in destructor.\n", errout.str());
|
||
|
||
checkVirtualFunctionCall("class A\n"
|
||
" {\n"
|
||
" virtual void pure()=0;\n"
|
||
" void nonpure()\n"
|
||
" {pure();}\n"
|
||
" A(); \n"
|
||
"};\n"
|
||
"A::A()\n"
|
||
"{nonpure();}\n");
|
||
ASSERT_EQUALS("[test.cpp:9] -> [test.cpp:5] -> [test.cpp:3]: (warning) Call of pure virtual function 'pure' in constructor.\n", errout.str());
|
||
|
||
checkVirtualFunctionCall("class A\n"
|
||
" {\n"
|
||
" virtual int pure()=0;\n"
|
||
" int nonpure()\n"
|
||
" {return pure();}\n"
|
||
" A(); \n"
|
||
" int m;\n"
|
||
"};\n"
|
||
"A::A():m(nonpure())\n"
|
||
"{}\n");
|
||
TODO_ASSERT_EQUALS("[test.cpp:9] -> [test.cpp:5] -> [test.cpp:3]: (warning) Call of pure virtual function 'pure' in constructor.\n", "", errout.str());
|
||
|
||
checkVirtualFunctionCall("class A\n"
|
||
" {\n"
|
||
" virtual void pure()=0; \n"
|
||
" void nonpure()\n"
|
||
" {pure();}\n"
|
||
" virtual ~A();\n"
|
||
" int m;\n"
|
||
"};\n"
|
||
"A::~A()\n"
|
||
"{nonpure();}\n");
|
||
ASSERT_EQUALS("[test.cpp:10] -> [test.cpp:5] -> [test.cpp:3]: (warning) Call of pure virtual function 'pure' in destructor.\n", errout.str());
|
||
|
||
checkVirtualFunctionCall("class A\n"
|
||
"{\n"
|
||
" virtual void pure()=0;\n"
|
||
" A(bool b);\n"
|
||
"};\n"
|
||
"A::A(bool b)\n"
|
||
"{if (b) pure();}\n");
|
||
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:3]: (warning) Call of pure virtual function 'pure' in constructor.\n", errout.str());
|
||
|
||
checkVirtualFunctionCall("class A\n"
|
||
"{\n"
|
||
" virtual void pure()=0;\n"
|
||
" virtual ~A();\n"
|
||
" int m;\n"
|
||
"};\n"
|
||
"A::~A()\n"
|
||
"{if (b) pure();}");
|
||
ASSERT_EQUALS("[test.cpp:8] -> [test.cpp:3]: (warning) Call of pure virtual function 'pure' in destructor.\n", errout.str());
|
||
|
||
// #5831
|
||
checkVirtualFunctionCall("class abc {\n"
|
||
"public:\n"
|
||
" virtual ~abc() throw() {}\n"
|
||
" virtual void def(void* g) throw () = 0;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// #4992
|
||
checkVirtualFunctionCall("class CMyClass {\n"
|
||
" std::function< void(void) > m_callback;\n"
|
||
"public:\n"
|
||
" CMyClass() {\n"
|
||
" m_callback = [this]() { return VirtualMethod(); };\n"
|
||
" }\n"
|
||
" virtual void VirtualMethod() = 0;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void pureVirtualFunctionCallOtherClass() {
|
||
checkVirtualFunctionCall("class A\n"
|
||
"{\n"
|
||
" virtual void pure()=0;\n"
|
||
" A(const A & a);\n"
|
||
"};\n"
|
||
"A::A(const A & a)\n"
|
||
"{a.pure();}\n");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkVirtualFunctionCall("class A\n"
|
||
"{\n"
|
||
" virtual void pure()=0;\n"
|
||
" A();\n"
|
||
"};\n"
|
||
"class B\n"
|
||
"{\n"
|
||
" virtual void pure()=0;\n"
|
||
"};\n"
|
||
"A::A()\n"
|
||
"{B b; b.pure();}\n");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void pureVirtualFunctionCallWithBody() {
|
||
checkVirtualFunctionCall("class A\n"
|
||
"{\n"
|
||
" virtual void pureWithBody()=0;\n"
|
||
" A();\n"
|
||
"};\n"
|
||
"A::A()\n"
|
||
"{pureWithBody();}\n"
|
||
"void A::pureWithBody()\n"
|
||
"{}\n");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkVirtualFunctionCall("class A\n"
|
||
" {\n"
|
||
" virtual void pureWithBody()=0;\n"
|
||
" void nonpure()\n"
|
||
" {pureWithBody();}\n"
|
||
" A(); \n"
|
||
"};\n"
|
||
"A::A()\n"
|
||
"{nonpure();}\n"
|
||
"void A::pureWithBody()\n"
|
||
"{}\n");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
}
|
||
|
||
void pureVirtualFunctionCallPrevented() {
|
||
checkVirtualFunctionCall("class A\n"
|
||
" {\n"
|
||
" virtual void pure()=0;\n"
|
||
" void nonpure(bool bCallPure)\n"
|
||
" { if (bCallPure) pure();}\n"
|
||
" A(); \n"
|
||
"};\n"
|
||
"A::A()\n"
|
||
"{nonpure(false);}\n");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkVirtualFunctionCall("class A\n"
|
||
" {\n"
|
||
" virtual void pure()=0;\n"
|
||
" void nonpure(bool bCallPure)\n"
|
||
" { if (!bCallPure) ; else pure();}\n"
|
||
" A(); \n"
|
||
"};\n"
|
||
"A::A()\n"
|
||
"{nonpure(false);}\n");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkVirtualFunctionCall("class A\n"
|
||
" {\n"
|
||
" virtual void pure()=0;\n"
|
||
" void nonpure(bool bCallPure)\n"
|
||
" {\n"
|
||
" switch (bCallPure) {\n"
|
||
" case true: pure(); break;\n"
|
||
" }\n"
|
||
" }\n"
|
||
" A(); \n"
|
||
"};\n"
|
||
"A::A()\n"
|
||
"{nonpure(false);}\n");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void checkOverride(const char code[]) {
|
||
// Clear the error log
|
||
errout.str("");
|
||
Settings settings;
|
||
settings.addEnabled("style");
|
||
|
||
// Tokenize..
|
||
Tokenizer tokenizer(&settings, this);
|
||
std::istringstream istr(code);
|
||
tokenizer.tokenize(istr, "test.cpp");
|
||
|
||
// Check..
|
||
CheckClass checkClass(&tokenizer, &settings, this);
|
||
checkClass.checkOverride();
|
||
}
|
||
|
||
void override1() {
|
||
checkOverride("class Base { virtual void f(); };\n"
|
||
"class Derived : Base { virtual void f(); };");
|
||
ASSERT_EQUALS("[test.cpp:1] -> [test.cpp:2]: (style) The function 'f' overrides a function in a base class but is not marked with a 'override' specifier.\n", errout.str());
|
||
|
||
checkOverride("class Base { virtual void f(); };\n"
|
||
"class Derived : Base { virtual void f() override; };");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOverride("class Base { virtual void f(); };\n"
|
||
"class Derived : Base { virtual void f() final; };");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOverride("class Base {\n"
|
||
"public:\n"
|
||
" virtual auto foo( ) const -> size_t { return 1; }\n"
|
||
" virtual auto bar( ) const -> size_t { return 1; }\n"
|
||
"};\n"
|
||
"class Derived : public Base {\n"
|
||
"public :\n"
|
||
" auto foo( ) const -> size_t { return 0; }\n"
|
||
" auto bar( ) const -> size_t override { return 0; }\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:8]: (style) The function 'foo' overrides a function in a base class but is not marked with a 'override' specifier.\n", errout.str());
|
||
|
||
checkOverride("namespace Test {\n"
|
||
" class C {\n"
|
||
" public:\n"
|
||
" virtual ~C();\n"
|
||
" };\n"
|
||
"}\n"
|
||
"class C : Test::C {\n"
|
||
"public:\n"
|
||
" ~C();\n"
|
||
"};");
|
||
ASSERT_EQUALS("[test.cpp:4] -> [test.cpp:9]: (style) The destructor '~C' overrides a destructor in a base class but is not marked with a 'override' specifier.\n", errout.str());
|
||
|
||
checkOverride("struct Base {\n"
|
||
" virtual void foo();\n"
|
||
"};\n"
|
||
"\n"
|
||
"struct Derived: public Base {\n"
|
||
" void foo() override;\n"
|
||
" void foo(int);\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void overrideCVRefQualifiers() {
|
||
checkOverride("class Base { virtual void f(); };\n"
|
||
"class Derived : Base { void f() const; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOverride("class Base { virtual void f(); };\n"
|
||
"class Derived : Base { void f() volatile; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOverride("class Base { virtual void f(); };\n"
|
||
"class Derived : Base { void f() &; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkOverride("class Base { virtual void f(); };\n"
|
||
"class Derived : Base { void f() &&; }");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
|
||
void checkUnsafeClassRefMember(const char code[]) {
|
||
// Clear the error log
|
||
errout.str("");
|
||
Settings settings;
|
||
settings.safeChecks.classes = true;
|
||
settings.addEnabled("warning");
|
||
|
||
// Tokenize..
|
||
Tokenizer tokenizer(&settings, this);
|
||
std::istringstream istr(code);
|
||
tokenizer.tokenize(istr, "test.cpp");
|
||
|
||
// Check..
|
||
CheckClass checkClass(&tokenizer, &settings, this);
|
||
checkClass.checkUnsafeClassRefMember();
|
||
}
|
||
|
||
void unsafeClassRefMember() {
|
||
checkUnsafeClassRefMember("class C { C(const std::string &s) : s(s) {} const std::string &s; };");
|
||
ASSERT_EQUALS("[test.cpp:1]: (warning) Unsafe class: The const reference member 'C::s' is initialized by a const reference constructor argument. You need to be careful about lifetime issues.\n", errout.str());
|
||
}
|
||
|
||
void checkThisUseAfterFree(const char code[]) {
|
||
// Clear the error log
|
||
errout.str("");
|
||
|
||
// Tokenize..
|
||
Tokenizer tokenizer(&settings1, this);
|
||
std::istringstream istr(code);
|
||
tokenizer.tokenize(istr, "test.cpp");
|
||
|
||
// Check..
|
||
CheckClass checkClass(&tokenizer, &settings1, this);
|
||
checkClass.checkThisUseAfterFree();
|
||
}
|
||
|
||
void checkThisUseAfterFree() {
|
||
setMultiline();
|
||
|
||
// Calling method..
|
||
checkThisUseAfterFree("class C {\n"
|
||
"public:\n"
|
||
" void dostuff() { delete mInstance; hello(); }\n"
|
||
"private:\n"
|
||
" static C *mInstance;\n"
|
||
" void hello() {}\n"
|
||
"};");
|
||
ASSERT_EQUALS("test.cpp:3:warning:Calling method 'hello()' when 'this' might be invalid\n"
|
||
"test.cpp:5:note:Assuming 'mInstance' is used as 'this'\n"
|
||
"test.cpp:3:note:Delete 'mInstance', invalidating 'this'\n"
|
||
"test.cpp:3:note:Call method when 'this' is invalid\n",
|
||
errout.str());
|
||
|
||
checkThisUseAfterFree("class C {\n"
|
||
"public:\n"
|
||
" void dostuff() { mInstance.reset(); hello(); }\n"
|
||
"private:\n"
|
||
" static std::shared_ptr<C> mInstance;\n"
|
||
" void hello() {}\n"
|
||
"};");
|
||
ASSERT_EQUALS("test.cpp:3:warning:Calling method 'hello()' when 'this' might be invalid\n"
|
||
"test.cpp:5:note:Assuming 'mInstance' is used as 'this'\n"
|
||
"test.cpp:3:note:Delete 'mInstance', invalidating 'this'\n"
|
||
"test.cpp:3:note:Call method when 'this' is invalid\n",
|
||
errout.str());
|
||
|
||
checkThisUseAfterFree("class C {\n"
|
||
"public:\n"
|
||
" void dostuff() { reset(); hello(); }\n"
|
||
"private:\n"
|
||
" static std::shared_ptr<C> mInstance;\n"
|
||
" void hello();\n"
|
||
" void reset() { mInstance.reset(); }\n"
|
||
"};");
|
||
ASSERT_EQUALS("test.cpp:3:warning:Calling method 'hello()' when 'this' might be invalid\n"
|
||
"test.cpp:5:note:Assuming 'mInstance' is used as 'this'\n"
|
||
"test.cpp:7:note:Delete 'mInstance', invalidating 'this'\n"
|
||
"test.cpp:3:note:Call method when 'this' is invalid\n",
|
||
errout.str());
|
||
|
||
// Use member..
|
||
checkThisUseAfterFree("class C {\n"
|
||
"public:\n"
|
||
" void dostuff() { delete self; x = 123; }\n"
|
||
"private:\n"
|
||
" static C *self;\n"
|
||
" int x;\n"
|
||
"};");
|
||
ASSERT_EQUALS("test.cpp:3:warning:Using member 'x' when 'this' might be invalid\n"
|
||
"test.cpp:5:note:Assuming 'self' is used as 'this'\n"
|
||
"test.cpp:3:note:Delete 'self', invalidating 'this'\n"
|
||
"test.cpp:3:note:Call method when 'this' is invalid\n",
|
||
errout.str());
|
||
|
||
checkThisUseAfterFree("class C {\n"
|
||
"public:\n"
|
||
" void dostuff() { delete self; x[1] = 123; }\n"
|
||
"private:\n"
|
||
" static C *self;\n"
|
||
" std::map<int,int> x;\n"
|
||
"};");
|
||
ASSERT_EQUALS("test.cpp:3:warning:Using member 'x' when 'this' might be invalid\n"
|
||
"test.cpp:5:note:Assuming 'self' is used as 'this'\n"
|
||
"test.cpp:3:note:Delete 'self', invalidating 'this'\n"
|
||
"test.cpp:3:note:Call method when 'this' is invalid\n",
|
||
errout.str());
|
||
|
||
// Assign 'shared_from_this()' to non-static smart pointer
|
||
checkThisUseAfterFree("class C {\n"
|
||
"public:\n"
|
||
" void hold() { mInstance = shared_from_this(); }\n"
|
||
" void dostuff() { mInstance.reset(); hello(); }\n"
|
||
"private:\n"
|
||
" std::shared_ptr<C> mInstance;\n"
|
||
" void hello() {}\n"
|
||
"};");
|
||
ASSERT_EQUALS("test.cpp:4:warning:Calling method 'hello()' when 'this' might be invalid\n"
|
||
"test.cpp:6:note:Assuming 'mInstance' is used as 'this'\n"
|
||
"test.cpp:4:note:Delete 'mInstance', invalidating 'this'\n"
|
||
"test.cpp:4:note:Call method when 'this' is invalid\n",
|
||
errout.str());
|
||
|
||
// Avoid FP..
|
||
checkThisUseAfterFree("class C {\n"
|
||
"public:\n"
|
||
" void dostuff() { delete self; x = 123; }\n"
|
||
"private:\n"
|
||
" C *self;\n"
|
||
" int x;\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkThisUseAfterFree("class C {\n"
|
||
"public:\n"
|
||
" void hold() { mInstance = shared_from_this(); }\n"
|
||
" void dostuff() { if (x) { mInstance.reset(); return; } hello(); }\n"
|
||
"private:\n"
|
||
" std::shared_ptr<C> mInstance;\n"
|
||
" void hello() {}\n"
|
||
"};");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
checkThisUseAfterFree("class C\n"
|
||
"{\n"
|
||
"public:\n"
|
||
" explicit C(const QString& path) : mPath( path ) {}\n"
|
||
"\n"
|
||
" static void initialize(const QString& path) {\n" // <- avoid fp in static method
|
||
" if (instanceSingleton)\n"
|
||
" delete instanceSingleton;\n"
|
||
" instanceSingleton = new C(path);\n"
|
||
" }\n"
|
||
"private:\n"
|
||
" static C* instanceSingleton;\n"
|
||
"};\n"
|
||
"\n"
|
||
"C* C::instanceSingleton;");
|
||
ASSERT_EQUALS("", errout.str());
|
||
|
||
// Avoid false positive when pointer is deleted in lambda
|
||
checkThisUseAfterFree("class C {\n"
|
||
"public:\n"
|
||
" void foo();\n"
|
||
" void set() { p = this; }\n"
|
||
" void dostuff() {}\n"
|
||
" C* p;\n"
|
||
"};\n"
|
||
"\n"
|
||
"void C::foo() {\n"
|
||
" auto done = [this] () { delete p; };\n"
|
||
" dostuff();\n"
|
||
" done();\n"
|
||
"}");
|
||
ASSERT_EQUALS("", errout.str());
|
||
}
|
||
};
|
||
|
||
REGISTER_TEST(TestClass)
|