/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2012 Daniel Marjamäki and Cppcheck team.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "tokenize.h"
#include "checkclass.h"
#include "testsuite.h"
#include <sstream>
extern std::ostringstream errout;
class TestClass : public TestFixture {
public:
TestClass() : TestFixture("TestClass")
{ }
private:
void run() {
TEST_CASE(virtualDestructor1); // Base class not found => no error
TEST_CASE(virtualDestructor2); // Base class doesn't have a destructor
TEST_CASE(virtualDestructor3); // Base class has a destructor, but it's not virtual
TEST_CASE(virtualDestructor4); // Derived class doesn't have a destructor => no error
TEST_CASE(virtualDestructor5); // Derived class has empty destructor => no error
TEST_CASE(virtualDestructor6); // only report error if base class pointer that points at derived class is deleted
TEST_CASE(virtualDestructorProtected);
TEST_CASE(virtualDestructorInherited);
TEST_CASE(virtualDestructorTemplate);
TEST_CASE(noConstructor1);
TEST_CASE(noConstructor2);
TEST_CASE(noConstructor3);
TEST_CASE(noConstructor4);
TEST_CASE(noConstructor5);
TEST_CASE(operatorEq1);
TEST_CASE(operatorEq2);
TEST_CASE(operatorEq3); // ticket #3051
TEST_CASE(operatorEq4); // ticket #3114
TEST_CASE(operatorEq5); // ticket #3296
TEST_CASE(operatorEqRetRefThis1);
TEST_CASE(operatorEqRetRefThis2); // ticket #1323
TEST_CASE(operatorEqRetRefThis3); // ticket #1405
TEST_CASE(operatorEqRetRefThis4); // ticket #1451
TEST_CASE(operatorEqRetRefThis5); // ticket #1550
TEST_CASE(operatorEqRetRefThis6); // ticket #2479
TEST_CASE(operatorEqToSelf1); // single class
TEST_CASE(operatorEqToSelf2); // nested class
TEST_CASE(operatorEqToSelf3); // multiple inheritance
TEST_CASE(operatorEqToSelf4); // nested class with multiple inheritance
TEST_CASE(operatorEqToSelf5); // ticket # 1233
TEST_CASE(operatorEqToSelf6); // ticket # 1550
TEST_CASE(operatorEqToSelf7);
TEST_CASE(operatorEqToSelf8); // ticket #2179
TEST_CASE(operatorEqToSelf9); // ticket #2592
TEST_CASE(memsetOnStruct);
TEST_CASE(memsetVector);
TEST_CASE(memsetOnClass);
TEST_CASE(this_subtraction); // warn about "this-x"
// can member function be made const
TEST_CASE(const1);
TEST_CASE(const2);
TEST_CASE(const3);
TEST_CASE(const4);
TEST_CASE(const5); // ticket #1482
TEST_CASE(const6); // ticket #1491
TEST_CASE(const7);
TEST_CASE(const8); // ticket #1517
TEST_CASE(const9); // ticket #1515
TEST_CASE(const10); // ticket #1522
TEST_CASE(const11); // ticket #1529
TEST_CASE(const12); // ticket #1552
TEST_CASE(const13); // ticket #1519
TEST_CASE(const14);
TEST_CASE(const15);
TEST_CASE(const16); // ticket #1551
TEST_CASE(const17); // ticket #1552
TEST_CASE(const18);
TEST_CASE(const19); // ticket #1612
TEST_CASE(const20); // ticket #1602
TEST_CASE(const21); // ticket #1683
TEST_CASE(const22);
TEST_CASE(const23); // ticket #1699
TEST_CASE(const24); // ticket #1708
TEST_CASE(const25); // ticket #1724
TEST_CASE(const26); // ticket #1847
TEST_CASE(const27); // ticket #1882
TEST_CASE(const28); // ticket #1883
TEST_CASE(const29); // ticket #1922
TEST_CASE(const30);
TEST_CASE(const31);
TEST_CASE(const32); // ticket #1905 - member array is assigned
TEST_CASE(const33);
TEST_CASE(const34); // ticket #1964
TEST_CASE(const35); // ticket #2001
TEST_CASE(const36); // ticket #2003
TEST_CASE(const37); // ticket #2081 and #2085
TEST_CASE(const38); // ticket #2135
TEST_CASE(const39);
TEST_CASE(const40); // ticket #2228
TEST_CASE(const41); // ticket #2255
TEST_CASE(const42); // ticket #2282
TEST_CASE(const43); // ticket #2377
TEST_CASE(const44); // ticket #2595
TEST_CASE(const45); // ticket #2664
TEST_CASE(const46); // ticket #2636
TEST_CASE(const47); // ticket #2670
TEST_CASE(const48); // ticket #2672
TEST_CASE(const49); // ticket #2795
TEST_CASE(const50); // ticket #2943
TEST_CASE(const51); // ticket #3040
TEST_CASE(const52); // ticket #3048
TEST_CASE(const53); // ticket #3049
TEST_CASE(const54); // ticket #3052
TEST_CASE(const55);
TEST_CASE(const56); // ticket #3149
TEST_CASE(const57); // tickets #2669 and #2477
TEST_CASE(const58); // ticket #2698
TEST_CASE(const_handleDefaultParameters);
TEST_CASE(const_passThisToMemberOfOtherClass);
TEST_CASE(assigningPointerToPointerIsNotAConstOperation);
TEST_CASE(assigningArrayElementIsNotAConstOperation);
TEST_CASE(constoperator1); // operator< can often be const
TEST_CASE(constoperator2); // operator<<
TEST_CASE(constoperator3);
TEST_CASE(constoperator4);
TEST_CASE(constoperator5); // ticket #3252
TEST_CASE(constincdec); // increment/decrement => non-const
TEST_CASE(constassign1);
TEST_CASE(constassign2);
TEST_CASE(constincdecarray); // increment/decrement array element => non-const
TEST_CASE(constassignarray);
TEST_CASE(constReturnReference);
TEST_CASE(constDelete); // delete member variable => not const
TEST_CASE(constLPVOID); // a function that returns LPVOID can't be const
TEST_CASE(constFunc); // a function that calls const functions can be const
TEST_CASE(constVirtualFunc);
TEST_CASE(constIfCfg); // ticket #1881 - fp when there are #if
TEST_CASE(constFriend); // ticket #1921 - fp for friend function
TEST_CASE(constUnion); // ticket #2111 - fp when there is a union
TEST_CASE(initializerListOrder);
TEST_CASE(initializerListUsage);
}
// Check the operator Equal
void checkOpertorEq(const char code[]) {
// Clear the error log
errout.str("");
Settings settings;
settings.addEnabled("style");
settings.inconclusive = true;
// Tokenize..
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.simplifyTokenList();
// Check..
CheckClass checkClass(&tokenizer, &settings, this);
checkClass.operatorEq();
}
void operatorEq1() {
checkOpertorEq("class A\n"
"{\n"
"public:\n"
" void goo() {}"
" void operator=(const A&);\n"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (style) 'A::operator=' should return 'A &'.\n", errout.str());
checkOpertorEq("class A\n"
"{\n"
"private:\n"
" void operator=(const A&);\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkOpertorEq("class A\n"
"{\n"
" void operator=(const A&);\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkOpertorEq("class A\n"
"{\n"
"public:\n"
" void goo() {}\n"
"private:\n"
" void operator=(const A&);\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkOpertorEq("class A\n"
"{\n"
"public:\n"
" void operator=(const A&);\n"
"};\n"
"class B\n"
"{\n"
"public:\n"
" void operator=(const B&);\n"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (style) 'A::operator=' should return 'A &'.\n"
"[test.cpp:9]: (style) 'B::operator=' should return 'B &'.\n", errout.str());
checkOpertorEq("struct A\n"
"{\n"
" void operator=(const A&);\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (style) 'A::operator=' should return 'A &'.\n", errout.str());
}
void operatorEq2() {
checkOpertorEq("class A\n"
"{\n"
"public:\n"
" void * operator=(const A&);\n"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (style) 'A::operator=' should return 'A &'.\n", errout.str());
checkOpertorEq("class A\n"
"{\n"
"public:\n"
" A * operator=(const A&);\n"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (style) 'A::operator=' should return 'A &'.\n", errout.str());
checkOpertorEq("class A\n"
"{\n"
"public:\n"
" const A & operator=(const A&);\n"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (style) 'A::operator=' should return 'A &'.\n", errout.str());
checkOpertorEq("class A\n"
"{\n"
"public:\n"
" B & operator=(const A&);\n"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (style) 'A::operator=' should return 'A &'.\n", errout.str());
}
void operatorEq3() { // ticket #3051
checkOpertorEq("class A\n"
"{\n"
"public:\n"
" A * operator=(const A*);\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void operatorEq4() { // ticket #3114 (infinite loop)
checkOpertorEq("struct A {\n"
" A& operator=(A const& a) { return operator=(&a); }\n"
" A& operator=(const A*) { return *this; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void operatorEq5() { // ticket #3296 (virtual operator)
checkOpertorEq(
"class A {\n"
" virtual A& operator=(const A &a) {return *this};\n"
"};");
ASSERT_EQUALS("", errout.str());
}
// Check that operator Equal returns reference to this
void checkOpertorEqRetRefThis(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");
tokenizer.simplifyTokenList();
// Check..
CheckClass checkClass(&tokenizer, &settings, this);
checkClass.operatorEqRetRefThis();
}
void operatorEqRetRefThis1() {
checkOpertorEqRetRefThis(
"class A\n"
"{\n"
"public:\n"
" A & operator=(const A &a) { return *this; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkOpertorEqRetRefThis(
"class A\n"
"{\n"
"public:\n"
" A & operator=(const A &a) { return a; }\n"
"};\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; }\n");
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; }\n");
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; }\n");
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; }\n");
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"
"};\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"
"};\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; }\n");
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; }\n");
ASSERT_EQUALS("[test.cpp:10]: (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]: (style) 'operator=' should return reference to 'this' instance.\n", errout.str());
checkOpertorEqRetRefThis(
"class szp\n"
"{\n"
" szp &operator =(int *other);\n"
"};\n"
"szp &szp::operator =(int *other) {}");
ASSERT_EQUALS("[test.cpp:5]: (style) 'operator=' should return reference to 'this' instance.\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());
}
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]: (style) 'operator=' should return reference to 'this' instance.\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]: (style) 'operator=' should return reference to 'this' instance.\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"
"}\n");
}
// Check that operator Equal checks for assignment to self
void checkOpertorEqToSelf(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");
tokenizer.simplifyTokenList();
// Check..
CheckClass checkClass(&tokenizer, &settings, 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"
"};\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"
"};\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"
"};\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"
"};\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; }\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"
" A & operator=(const A &);\n"
"};\n"
"A & 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 &);\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"
"}\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"
"}\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"
"};\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"
"};\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"
"};\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"
"};\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; }\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 &);\n"
" };\n"
"};\n"
"A::B & A::B::operator=(const A::B &b) { return *this; }\n");
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"
" }\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"
" }\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"
"};\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"
"};\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; }\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 &);\n"
"};\n"
"A & A::operator=(const A &a)\n"
"{\n"
" free(s);\n"
" s = strdup(a.s);\n"
" return *this;\n"
"}\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"
"};\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"
"};\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; }\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 &);\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"
"}\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"
"}\n");
ASSERT_EQUALS("", errout.str());
}
// Check that base classes have virtual destructors
void checkVirtualDestructor(const char code[]) {
// Clear the error log
errout.str("");
Settings settings;
// Tokenize..
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.simplifyTokenList();
// Check..
CheckClass checkClass(&tokenizer, &settings, 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 => no error
checkVirtualDestructor("class Base { public: ~Base(); };\n"
"class Derived : public Base { };"
"Base *base = new Derived;\n"
"delete base;");
ASSERT_EQUALS("", errout.str());
checkVirtualDestructor("class Base { public: ~Base(); };\n"
"class Derived : private Fred, public Base { };"
"Base *base = new Derived;\n"
"delete base;");
ASSERT_EQUALS("", errout.str());
}
void virtualDestructor5() {
// Derived class has empty destructor => no error
checkVirtualDestructor("class Base { public: ~Base(); };\n"
"class Derived : public Base { public: ~Derived() {} };"
"Base *base = new Derived;\n"
"delete base;");
ASSERT_EQUALS("", 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("", 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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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 checkNoConstructor(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");
tokenizer.simplifyTokenList();
// Check..
CheckClass checkClass(&tokenizer, &settings, this);
checkClass.constructors();
}
void noConstructor1() {
// There are nonstatic member variables - constructor is needed
checkNoConstructor("class Fred\n"
"{\n"
" int i;\n"
"};\n");
ASSERT_EQUALS("[test.cpp:1]: (style) The class 'Fred' does not have a constructor.\n", errout.str());
}
void noConstructor2() {
checkNoConstructor("class Fred\n"
"{\n"
"public:\n"
" static void foobar();\n"
"};\n"
"\n"
"void Fred::foobar()\n"
"{ }\n");
ASSERT_EQUALS("", errout.str());
}
void noConstructor3() {
checkNoConstructor("class Fred\n"
"{\n"
"private:\n"
" static int foobar;\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void noConstructor4() {
checkNoConstructor("class Fred\n"
"{\n"
"public:\n"
" int foobar;\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void noConstructor5() {
checkNoConstructor("namespace Foo\n"
"{\n"
" int i;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void checkNoMemset(const char code[]) {
// Clear the error log
errout.str("");
Settings settings;
// Tokenize..
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
// Check..
CheckClass checkClass(&tokenizer, &settings, this);
checkClass.noMemset();
}
void memsetOnClass() {
checkNoMemset("class Fred\n"
"{\n"
"};\n"
"void f()\n"
"{\n"
" Fred fred;\n"
" memset(&fred, 0, sizeof(Fred));\n"
"}\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"
"}\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"
"}\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"
"}\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"
"}\n");
ASSERT_EQUALS("[test.cpp:8]: (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"
"}\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"
"}\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"
"}\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"
"}\n");
ASSERT_EQUALS("[test.cpp:8]: (error) Using 'memset' on class that contains a virtual method.\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"
"}\n");
ASSERT_EQUALS("[test.cpp:8]: (error) Using 'memset' on class that contains a virtual method.\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"
"}\n");
ASSERT_EQUALS("[test.cpp:12]: (error) Using 'memset' on class that contains a virtual method.\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"
"}\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"
"}\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"
"}\n");
ASSERT_EQUALS("[test.cpp:10]: (error) Using 'memset' on class that contains a 'std::string'.\n", errout.str());
}
void memsetOnStruct() {
checkNoMemset("struct A\n"
"{\n"
"};\n"
"void f()\n"
"{\n"
" A a;\n"
" memset(&a, 0, sizeof(A));\n"
"}\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"
"}\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"
"}\n");
ASSERT_EQUALS("", errout.str());
checkNoMemset("void f()\n"
"{\n"
" struct sockaddr_in6 fail;\n"
" memset(&fail, 0, sizeof(struct sockaddr_in6));\n"
"}\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"
"}\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"
"}\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"
"}\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());
}
void checkThisSubtraction(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");
tokenizer.simplifyTokenList();
// Check..
CheckClass checkClass(&tokenizer, &settings, 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[], const Settings *s = 0, bool inconclusive = true) {
// Clear the error log
errout.str("");
// Check..
Settings settings;
if (s)
settings = *s;
else
settings.addEnabled("style");
settings.inconclusive = inconclusive;
// Tokenize..
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.simplifyTokenList();
CheckClass checkClass(&tokenizer, &settings, this);
checkClass.checkConst();
}
void const1() {
checkConst("class Fred {\n"
" int a;\n"
" int getA() { return a; }\n"
"};\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"
"};\n");
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'Fred::foo' can be static.\n", errout.str());
checkConst("class Fred {\n"
" std::string s;\n"
" const std::string & foo() { return ""; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::foo' can be static.\n", errout.str());
// constructors can't be const..
checkConst("class Fred {\n"
" int a;\n"
"public:\n"
" Fred() { }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// assignment through |=..
checkConst("class Fred {\n"
" int a;\n"
" int setA() { a |= true; }\n"
"};\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.\n", errout.str());
// static functions can't be const..
checkConst("class foo\n"
"{\n"
"public:\n"
" static unsigned get()\n"
" { return 0; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" const std::string foo() const throw() { return ""; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'Fred::foo' can be static.\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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.\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 = 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());
// 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.\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.\n"
"[test.cpp:10] -> [test.cpp:4]: (performance, inconclusive) Technically the member function 'Fred::foo2' can be static.\n"
"[test.cpp:11] -> [test.cpp:5]: (performance, inconclusive) Technically the member function 'Fred::foo3' can be static.\n"
"[test.cpp:12] -> [test.cpp:6]: (performance, inconclusive) Technically the member function 'Fred::foo4' can be static.\n"
"[test.cpp:13] -> [test.cpp:7]: (performance, inconclusive) Technically the member function 'Fred::foo5' can be static.\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; }\n");
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"
"};\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"
"};\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"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct Fred {\n"
" int array[10];\n"
" int const & operator [] (unsigned int index) { return array[index]; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::operator[]' can be const.\n", errout.str());
}
void constoperator4() {
checkConst("struct Fred {\n"
" int array[10];\n"
" typedef int* (Fred::*UnspecifiedBoolType);\n"
" operator UnspecifiedBoolType() { };\n"
"};\n");
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"
"};\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 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.\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< int,vector<int> > GetPair() {return m_pair;}\n"
"private:\n"
" pair< int,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("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" const pair< int,vector<int> >& GetPair() {return m_pair;}\n"
"private:\n"
" pair< int,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("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< int,vector<int> >& GetPair() {return m_pair;}\n"
"private:\n"
" pair< int,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("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< vector<int>, vector<int> > GetPair() {return m_pair;}\n"
"private:\n"
" pair< vector<int>, 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("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" const pair< vector<int>, vector<int> >& GetPair() {return m_pair;}\n"
"private:\n"
" pair< vector<int>, 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("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< vector<int>, vector<int> >& GetPair() {return m_pair;}\n"
"private:\n"
" pair< vector<int>, 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("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< pair < int, char > , int > GetPair() {return m_pair;}\n"
"private:\n"
" pair< 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("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" const pair< pair < int, char > , int > & GetPair() {return m_pair;}\n"
"private:\n"
" pair< 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("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< pair < int, char > , int > & GetPair() {return m_pair;}\n"
"private:\n"
" pair< pair < int, char > , int > m_pair;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< int , pair < int, char > > GetPair() {return m_pair;}\n"
"private:\n"
" pair< int , 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("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" const pair< int , pair < int, char > > & GetPair() {return m_pair;}\n"
"private:\n"
" pair< int , 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("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< int , pair < int, char > > & GetPair() {return m_pair;}\n"
"private:\n"
" pair< int , pair < int, char > > 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 * const * 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());
checkConst("class A {\n"
"public:\n"
" const int * const * 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"
"};\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"
"};\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"
"};\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"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void const16() {
// ticket #1551
checkConst("class Fred {\n"
" int a;\n"
" void set(int i) { Fred::a = i; }\n"
"};\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"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void const18() {
checkConst("class Fred {\n"
"static int x;\n"
"public:\n"
" void set(int i) { x = i; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (performance, inconclusive) Technically the member function 'Fred::set' can be static.\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"
"};\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"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" list<int *> x;\n"
"public:\n"
" list<int *> get() { return x; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" list<const int *> x;\n"
"public:\n"
" list<const int *> get() { return x; }\n"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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 static_cast<float>(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 dRet / m_d;\n"
" return dRet;\n"
"};\n"
);
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"
"};\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"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (performance, inconclusive) Technically the member function 'AA::vSetXPos' can be static.\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"
"}\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void const31() {
checkConst("namespace std { }\n"
"class Fred {\n"
"public:\n"
" int a;\n"
" int get() { return a; }\n"
"};\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"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void const33() {
checkConst("class derived : public base {\n"
"public:\n"
" void f(){}\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void const34() { // ticket #1964
checkConst("class Bar {\n"
" void init(Foo * foo) {\n"
" foo.bar = this;\n"
" }\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"
"}\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; }\n");
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"
"}\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; }\n");
TODO_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"
"};\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"
"};\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 bool(x == 0x11224488);\n"
" }\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"
"}\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"
"}\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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"
"};\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"
"}\n");
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:5]: (performance, inconclusive) Technically the member function 'Fred::f' can be static.\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"
"}\n");
ASSERT_EQUALS("[test.cpp:9] -> [test.cpp:7]: (performance, inconclusive) Technically the member function 'Fred::f' can be static.\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"
"}\n");
ASSERT_EQUALS("[test.cpp:10] -> [test.cpp:8]: (performance, inconclusive) Technically the member function 'NS::Fred::f' can be static.\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"
"}\n");
ASSERT_EQUALS("[test.cpp:11] -> [test.cpp:8]: (performance, inconclusive) Technically the member function 'NS::Fred::f' can be static.\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"
"}\n");
ASSERT_EQUALS("[test.cpp:11] -> [test.cpp:8]: (performance, inconclusive) Technically the member function 'Foo::Fred::f' can be static.\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"
"}\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"
"};\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"
"};\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 && true);\n"
" }\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"
"}\n");
ASSERT_EQUALS("[test.cpp:8]: (performance, inconclusive) Technically the member function 'tools::WorkspaceControl::toGrid' can be static.\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"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Altren::fun1' can be static.\n"
"[test.cpp:7]: (performance, inconclusive) Technically the member function 'Altren::fun2' can be static.\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"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (performance, inconclusive) Technically the member function 'Altren::foo' can be static.\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"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (performance, inconclusive) Technically the member function 'Altren::foo' can be static.\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"
"}\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"
"};\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"
"}\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"
"};\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"
"};\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.\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"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void const54() { // ticket 3052
checkConst("class Example {\n"
" public:\n"
" void Clear(void) { Example tmp; (*this) = tmp; }\n"
"};\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"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void const56() { // ticket #3149
checkConst("class MyObject {\n"
"public:\n"
" void foo(int x) {\n"
" switch (x) { }\n"
" }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'MyObject::foo' can be static.\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"
" break;\n"
" }\n"
" case INT_TYPE:\n"
" {\n"
" return RET_OK;\n"
" break;\n"
" }\n"
" default:\n"
" {\n"
" return RET_NOK;\n"
" break;\n"
" }\n"
" }\n"
" }\n"
" catch (...)\n"
" {\n"
" return RET_NOK;\n"
" }\n"
"\n"
" return RET_NOK;\n"
"}\n");
ASSERT_EQUALS("[test.cpp:9] -> [test.cpp:4]: (performance, inconclusive) Technically the member function 'A::f' can be static.\n", errout.str());
checkConst("class MyObject {\n"
"public:\n"
" void foo(int x) {\n"
" for (int i = 0; i < 5; i++) { }\n"
" }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'MyObject::foo' can be static.\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"
"};\n");
ASSERT_EQUALS("[test.cpp:7]: (performance, inconclusive) Technically the member function 'MyGUI::types::TCoord::size' can be static.\n"
"[test.cpp:15]: (style, inconclusive) Technically the member function 'SelectorControl::getSize' can be const.\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.\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.\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.\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 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.\n"
"[test.cpp:14]: (performance, inconclusive) Technically the member function 'Foo::bar4' can be static.\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.\n", 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"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a;\n"
" void nextA() { return --a; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a;\n"
" void nextA() { return a++; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a;\n"
" void nextA() { return a--; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("int a;\n"
"class Fred {\n"
" void nextA() { return ++a; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("int a;\n"
"class Fred {\n"
" void nextA() { return --a; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("int a;\n"
"class Fred {\n"
" void nextA() { return a++; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("int a;\n"
"class Fred {\n"
" void nextA() { return a--; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
}
void constassign1() {
checkConst("class Fred {\n"
" int a;\n"
" void nextA() { return a=1; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a;\n"
" void nextA() { return a-=1; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a;\n"
" void nextA() { return a+=1; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a;\n"
" void nextA() { return a*=-1; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a;\n"
" void nextA() { return a/=-2; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("int a;\n"
"class Fred {\n"
" void nextA() { return a=1; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("int a;\n"
"class Fred {\n"
" void nextA() { return a-=1; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("int a;\n"
"class Fred {\n"
" void nextA() { return a+=1; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("int a;\n"
"class Fred {\n"
" void nextA() { return a*=-1; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("int a;\n"
"class Fred {\n"
" void nextA() { return a/=-2; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
}
void constassign2() {
checkConst("class Fred {\n"
" struct A { int a; } s;\n"
" void nextA() { return s.a=1; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" struct A { int a; } s;\n"
" void nextA() { return s.a-=1; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" struct A { int a; } s;\n"
" void nextA() { return s.a+=1; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" struct A { int a; } s;\n"
" void nextA() { return s.a*=-1; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct A { int a; } s;\n"
"class Fred {\n"
" void nextA() { return s.a=1; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("struct A { int a; } s;\n"
"class Fred {\n"
" void nextA() { return s.a-=1; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("struct A { int a; } s;\n"
"class Fred {\n"
" void nextA() { return s.a+=1; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("struct A { int a; } s;\n"
"class Fred {\n"
" void nextA() { return s.a*=-1; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("struct A { int a; } s;\n"
"class Fred {\n"
" void nextA() { return s.a/=-2; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("struct A { int a; };\n"
"class Fred {\n"
" A s;\n"
" void nextA() { return s.a=1; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct A { int a; };\n"
"class Fred {\n"
" A s;\n"
" void nextA() { return s.a-=1; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct A { int a; };\n"
"class Fred {\n"
" A s;\n"
" void nextA() { return s.a+=1; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct A { int a; };\n"
"class Fred {\n"
" A s;\n"
" void nextA() { return s.a*=-1; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct A { int a; };\n"
"class Fred {\n"
" A s;\n"
" void nextA() { return s.a/=-2; }\n"
"};\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"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a[2];\n"
" void nextA() { return --a[0]; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a[2];\n"
" void nextA() { return a[0]++; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a[2];\n"
" void nextA() { return a[0]--; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("int a[2];\n"
"class Fred {\n"
" void nextA() { return ++a[0]; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("int a[2];\n"
"class Fred {\n"
" void nextA() { return --a[0]; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("int a[2];\n"
"class Fred {\n"
" void nextA() { return a[0]++; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("int a[2];\n"
"class Fred {\n"
" void nextA() { return a[0]--; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
}
void constassignarray() {
checkConst("class Fred {\n"
" int a[2];\n"
" void nextA() { return a[0]=1; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a[2];\n"
" void nextA() { return a[0]-=1; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a[2];\n"
" void nextA() { return a[0]+=1; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a[2];\n"
" void nextA() { return a[0]*=-1; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a[2];\n"
" void nextA() { return a[0]/=-2; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("int a[2];\n"
"class Fred {\n"
" void nextA() { return a[0]=1; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("int a[2];\n"
"class Fred {\n"
" void nextA() { return a[0]-=1; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("int a[2];\n"
"class Fred {\n"
" void nextA() { return a[0]+=1; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("int a[2];\n"
"class Fred {\n"
" void nextA() { return a[0]*=-1; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\n", errout.str());
checkConst("int a[2];\n"
"class Fred {\n"
" void nextA() { return a[0]/=-2; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static.\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; }"
"};\n");
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"
"};\n");
ASSERT_EQUALS("", errout.str());
}
// A function that returns LPVOID can't be const
void constLPVOID() {
checkConst("class Fred {\n"
" LPVOID a() { return 0; };\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// #1579 - HDC
checkConst("class Fred {\n"
" HDC a() { return 0; };\n"
"};\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"
"};\n");
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'Fred::f' can be static.\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"
"};\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; }\n");
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"
"};\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; }\n");
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"
"};\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; }\n");
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; }\n");
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"
"};\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; }\n");
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"
"};\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; }\n");
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"
"};\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; }\n");
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"
"};";
Settings settings;
settings.addEnabled("style");
checkConst(code, &settings, true);
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'foo::f' can be static.\n", errout.str());
checkConst(code, &settings, 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 checkInitializerListOrder(const char code[]) {
// Clear the error log
errout.str("");
// Check..
Settings settings;
settings.addEnabled("style");
settings.inconclusive = true;
// Tokenize..
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.simplifyTokenList();
CheckClass checkClass(&tokenizer, &settings, 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());
}
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");
tokenizer.simplifyTokenList();
CheckClass checkClass(&tokenizer, &settings, this);
checkClass.initializationListUsage();
}
void initializerListUsage() {
checkInitializationListUsage("class Fred {\n"
" int a;\n" // No message for builtin types: No performance gain
" int* b;\n" // No message for pointers: No performance gain
" Fred() { a = 0; b = 0; }\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::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 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());
}
};
REGISTER_TEST(TestClass)