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cppcheck/test/testconstructors.cpp

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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2022 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 "checkclass.h"
#include "errortypes.h"
#include "standards.h"
#include "settings.h"
#include "testsuite.h"
#include "tokenize.h"
#include <list>
#include <sstream> // IWYU pragma: keep
#include <string>
class TestConstructors : public TestFixture {
public:
TestConstructors() : TestFixture("TestConstructors") {}
private:
Settings settings;
#define check(...) check_(__FILE__, __LINE__, __VA_ARGS__)
void check_(const char* file, int line, const char code[], bool inconclusive = false) {
// Clear the error buffer..
errout.str("");
settings.certainty.setEnabled(Certainty::inconclusive, inconclusive);
// Tokenize..
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code);
ASSERT_LOC(tokenizer.tokenize(istr, "test.cpp"), file, line);
// Check class constructors..
CheckClass checkClass(&tokenizer, &settings, this);
checkClass.constructors();
}
void check_(const char* file, int line, const char code[], const Settings &s) {
// Clear the error buffer..
errout.str("");
// Tokenize..
Tokenizer tokenizer(&s, this);
std::istringstream istr(code);
ASSERT_LOC(tokenizer.tokenize(istr, "test.cpp"), file, line);
// Check class constructors..
CheckClass checkClass(&tokenizer, &s, this);
checkClass.constructors();
}
void run() override {
settings.severity.enable(Severity::style);
settings.severity.enable(Severity::warning);
TEST_CASE(simple1);
TEST_CASE(simple2);
TEST_CASE(simple3);
TEST_CASE(simple4);
TEST_CASE(simple5); // ticket #2560
TEST_CASE(simple6); // ticket #4085 - uninstantiated template class
TEST_CASE(simple7); // ticket #4531
TEST_CASE(simple8);
TEST_CASE(simple9); // ticket #4574
TEST_CASE(simple10); // ticket #4388
TEST_CASE(simple11); // ticket #4536, #6214
TEST_CASE(simple12); // ticket #4620
TEST_CASE(simple13); // #5498 - no constructor, c++11 assignments
TEST_CASE(simple14); // #6253 template base
TEST_CASE(simple15); // #8942 multiple arguments, decltype
TEST_CASE(simple16); // copy members with c++11 init
TEST_CASE(simple17); // #10360
TEST_CASE(noConstructor1);
TEST_CASE(noConstructor2);
TEST_CASE(noConstructor3);
TEST_CASE(noConstructor4);
TEST_CASE(noConstructor5);
TEST_CASE(noConstructor6); // ticket #4386
TEST_CASE(noConstructor7); // ticket #4391
TEST_CASE(noConstructor8); // ticket #4404
TEST_CASE(noConstructor9); // ticket #4419
TEST_CASE(noConstructor10); // ticket #6614
TEST_CASE(noConstructor11); // ticket #3552
TEST_CASE(noConstructor12); // #8951 - member initialization
TEST_CASE(noConstructor13); // #9998
TEST_CASE(noConstructor14); // #10770
TEST_CASE(noConstructor15); // #5499
TEST_CASE(forwardDeclaration); // ticket #4290/#3190
TEST_CASE(initvar_with_this); // BUG 2190300
TEST_CASE(initvar_if); // BUG 2190290
TEST_CASE(initvar_operator_eq1); // BUG 2190376
TEST_CASE(initvar_operator_eq2); // BUG 2190376
TEST_CASE(initvar_operator_eq3);
TEST_CASE(initvar_operator_eq4); // ticket #2204
TEST_CASE(initvar_operator_eq5); // ticket #4119
TEST_CASE(initvar_operator_eq6);
TEST_CASE(initvar_operator_eq7);
TEST_CASE(initvar_operator_eq8);
TEST_CASE(initvar_same_classname); // BUG 2208157
TEST_CASE(initvar_chained_assign); // BUG 2270433
TEST_CASE(initvar_2constructors); // BUG 2270353
TEST_CASE(initvar_constvar);
TEST_CASE(initvar_staticvar);
TEST_CASE(initvar_brace_init);
TEST_CASE(initvar_union);
TEST_CASE(initvar_delegate); // ticket #4302
TEST_CASE(initvar_delegate2);
TEST_CASE(initvar_derived_class);
TEST_CASE(initvar_derived_pod_struct_with_union); // #11101
TEST_CASE(initvar_private_constructor); // BUG 2354171 - private constructor
TEST_CASE(initvar_copy_constructor); // ticket #1611
TEST_CASE(initvar_nested_constructor); // ticket #1375
TEST_CASE(initvar_nocopy1); // ticket #2474
TEST_CASE(initvar_nocopy2); // ticket #2484
TEST_CASE(initvar_nocopy3); // ticket #3611
TEST_CASE(initvar_nocopy4); // ticket #9247
TEST_CASE(initvar_with_member_function_this); // ticket #4824
TEST_CASE(initvar_destructor); // No variables need to be initialized in a destructor
TEST_CASE(initvar_func_ret_func_ptr); // ticket #4449
TEST_CASE(initvar_alias); // #6921
TEST_CASE(initvar_templateMember); // #7205
TEST_CASE(initvar_smartptr); // #10237
TEST_CASE(operatorEqSTL);
TEST_CASE(uninitVar1);
TEST_CASE(uninitVar2);
TEST_CASE(uninitVar3);
TEST_CASE(uninitVar4);
TEST_CASE(uninitVar5);
TEST_CASE(uninitVar6);
TEST_CASE(uninitVar7);
TEST_CASE(uninitVar8);
TEST_CASE(uninitVar9); // ticket #1730
TEST_CASE(uninitVar10); // ticket #1993
TEST_CASE(uninitVar11);
TEST_CASE(uninitVar12); // ticket #2078
TEST_CASE(uninitVar13); // ticket #1195
TEST_CASE(uninitVar14); // ticket #2149
TEST_CASE(uninitVar15);
TEST_CASE(uninitVar16);
TEST_CASE(uninitVar17);
TEST_CASE(uninitVar18); // ticket #2465
TEST_CASE(uninitVar19); // ticket #2792
TEST_CASE(uninitVar20); // ticket #2867
TEST_CASE(uninitVar21); // ticket #2947
TEST_CASE(uninitVar22); // ticket #3043
TEST_CASE(uninitVar23); // ticket #3702
TEST_CASE(uninitVar24); // ticket #3190
TEST_CASE(uninitVar25); // ticket #4789
TEST_CASE(uninitVar26);
TEST_CASE(uninitVar27); // ticket #5170 - rtl::math::setNan(&d)
TEST_CASE(uninitVar28); // ticket #6258
TEST_CASE(uninitVar29);
TEST_CASE(uninitVar30); // ticket #6417
TEST_CASE(uninitVar31); // ticket #8271
TEST_CASE(uninitVar32); // ticket #8835
TEST_CASE(uninitVar33); // ticket #10295
TEST_CASE(uninitVar34); // ticket #10841
TEST_CASE(uninitVarEnum1);
TEST_CASE(uninitVarEnum2); // ticket #8146
TEST_CASE(uninitVarStream);
TEST_CASE(uninitVarTypedef);
TEST_CASE(uninitVarMemset);
TEST_CASE(uninitVarArray1);
TEST_CASE(uninitVarArray2);
TEST_CASE(uninitVarArray3);
TEST_CASE(uninitVarArray4);
TEST_CASE(uninitVarArray5);
TEST_CASE(uninitVarArray6);
TEST_CASE(uninitVarArray7);
TEST_CASE(uninitVarArray8);
TEST_CASE(uninitVarArray9); // ticket #6957, #6959
TEST_CASE(uninitVarArray2D);
TEST_CASE(uninitVarArray3D);
TEST_CASE(uninitVarCpp11Init1);
TEST_CASE(uninitVarCpp11Init2);
TEST_CASE(uninitVarStruct1); // ticket #2172
TEST_CASE(uninitVarStruct2); // ticket #838
TEST_CASE(uninitVarUnion1); // ticket #3196
TEST_CASE(uninitVarUnion2);
TEST_CASE(uninitMissingFuncDef); // can't expand function in constructor
TEST_CASE(privateCtor1); // If constructor is private..
TEST_CASE(privateCtor2); // If constructor is private..
TEST_CASE(function); // Function is not variable
TEST_CASE(uninitVarPublished); // Borland C++: Variables in the published section are auto-initialized
TEST_CASE(uninitVarInheritClassInit); // Borland C++: if class inherits from TObject, all variables are initialized
TEST_CASE(uninitOperator); // No FP about uninitialized 'operator[]'
TEST_CASE(uninitFunction1); // No FP when initialized in function
TEST_CASE(uninitFunction2); // No FP when initialized in function
TEST_CASE(uninitFunction3); // No FP when initialized in function
TEST_CASE(uninitFunction4);
TEST_CASE(uninitFunction5);
TEST_CASE(uninitSameClassName); // No FP when two classes have the same name
TEST_CASE(uninitFunctionOverload); // No FP when there are overloaded functions
TEST_CASE(uninitVarOperatorEqual); // ticket #2415
TEST_CASE(uninitVarPointer); // ticket #3801
TEST_CASE(uninitConstVar);
TEST_CASE(constructors_crash1); // ticket #5641
TEST_CASE(classWithOperatorInName);// ticket #2827
TEST_CASE(templateConstructor); // ticket #7942
TEST_CASE(typedefArray); // ticket #5766
TEST_CASE(uninitAssignmentWithOperator); // ticket #7429
TEST_CASE(uninitCompoundAssignment); // ticket #7429
TEST_CASE(uninitComparisonAssignment); // ticket #7429
TEST_CASE(uninitTemplate1); // ticket #7372
TEST_CASE(unknownTemplateType);
}
void simple1() {
check("class Fred\n"
"{\n"
"public:\n"
" int i;\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class Fred\n"
"{\n"
"private:\n"
" int i;\n"
"};");
ASSERT_EQUALS("[test.cpp:1]: (style) The class 'Fred' does not declare a constructor although it has private member variables which likely require initialization.\n", errout.str());
check("struct Fred\n"
"{\n"
"private:\n"
" int i;\n"
"};");
ASSERT_EQUALS("[test.cpp:1]: (style) The struct 'Fred' does not declare a constructor although it has private member variables which likely require initialization.\n", errout.str());
}
void simple2() {
check("class Fred\n"
"{\n"
"public:\n"
" Fred() : i(0) { }\n"
" Fred(Fred const & other) : i(other.i) {}\n"
" Fred(Fred && other) : i(other.i) {}\n"
" int i;\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class Fred\n"
"{\n"
"public:\n"
" Fred() { i = 0; }\n"
" Fred(Fred const & other) {i=other.i}\n"
" Fred(Fred && other) {i=other.i}\n"
" int i;\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class Fred\n"
"{\n"
"public:\n"
" Fred() { }\n"
" Fred(Fred const & other) {}\n"
" Fred(Fred && other) {}\n"
" int i;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'Fred::i' is not initialized in the constructor.\n"
"[test.cpp:5]: (warning) Member variable 'Fred::i' is not initialized in the copy constructor.\n"
"[test.cpp:6]: (warning) Member variable 'Fred::i' is not initialized in the move constructor.\n", errout.str());
check("struct Fred\n"
"{\n"
" Fred() { }\n"
" Fred(Fred const & other) {}\n"
" Fred(Fred && other) {}\n"
" int i;\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (warning) Member variable 'Fred::i' is not initialized in the constructor.\n"
"[test.cpp:4]: (warning) Member variable 'Fred::i' is not initialized in the copy constructor.\n"
"[test.cpp:5]: (warning) Member variable 'Fred::i' is not initialized in the move constructor.\n", errout.str());
}
void simple3() {
check("struct Fred\n"
"{\n"
" Fred();\n"
" int i;\n"
"};\n"
"Fred::Fred() :i(0)\n"
"{ }");
ASSERT_EQUALS("", errout.str());
check("struct Fred\n"
"{\n"
" Fred();\n"
" int i;\n"
"};\n"
"Fred::Fred()\n"
"{ i = 0; }");
ASSERT_EQUALS("", errout.str());
check("struct Fred\n"
"{\n"
" Fred();\n"
" int i;\n"
"};\n"
"Fred::Fred()\n"
"{ }");
ASSERT_EQUALS("[test.cpp:6]: (warning) Member variable 'Fred::i' is not initialized in the constructor.\n", errout.str());
}
void simple4() {
check("struct Fred\n"
"{\n"
" Fred();\n"
" explicit Fred(int _i);\n"
" Fred(Fred const & other);\n"
" int i;\n"
"};\n"
"Fred::Fred()\n"
"{ }\n"
"Fred::Fred(int _i)\n"
"{\n"
" i = _i;\n"
"}\n", true);
ASSERT_EQUALS("[test.cpp:8]: (warning, inconclusive) Member variable 'Fred::i' is not initialized in the constructor.\n", errout.str());
}
void simple5() { // ticket #2560
check("namespace Nsp\n"
"{\n"
" class B { };\n"
"}\n"
"class Altren : public Nsp::B\n"
"{\n"
"public:\n"
" Altren () : Nsp::B(), mValue(0)\n"
" {\n"
" }\n"
"private:\n"
" int mValue;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void simple6() { // ticket #4085 - uninstantiated template class
check("template <class T> struct A {\n"
" A<T>() { x = 0; }\n"
" A<T>(const T & t) { x = t.x; }\n"
"private:\n"
" int x;\n"
"};");
ASSERT_EQUALS("", errout.str());
check("template <class T> struct A {\n"
" A<T>() : x(0) { }\n"
" A<T>(const T & t) : x(t.x) { }\n"
"private:\n"
" int x;\n"
"};");
ASSERT_EQUALS("", errout.str());
check("template <class T> struct A {\n"
" A<T>() : x(0) { }\n"
" A<T>(const T & t) : x(t.x) { }\n"
"private:\n"
" int x;\n"
" int y;\n"
"};");
ASSERT_EQUALS("[test.cpp:2]: (warning) Member variable 'A::y' is not initialized in the constructor.\n"
"[test.cpp:3]: (warning) Member variable 'A::y' is not initialized in the constructor.\n", errout.str());
}
void simple7() { // ticket #4531
check("class Fred;\n"
"struct Fred {\n"
" int x;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void simple8() {
check("struct Fred { int x; };\n"
"class Barney { Fred fred; };\n"
"class Wilma { struct Betty { int x; } betty; };");
ASSERT_EQUALS("[test.cpp:2]: (style) The class 'Barney' does not declare a constructor although it has private member variables which likely require initialization.\n"
"[test.cpp:3]: (style) The class 'Wilma' does not declare a constructor although it has private member variables which likely require initialization.\n", errout.str());
}
void simple9() { // ticket #4574
check("class Unknown::Fred {\n"
"public:\n"
" Fred() : x(0) { }\n"
"private:\n"
" int x;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void simple10() {
check("class Fred {\n" // ticket #4388
"public:\n"
" Fred() = default;\n"
"private:\n"
" int x;\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (warning) Member variable 'Fred::x' is not initialized in the constructor.\n", errout.str());
check("struct S {\n" // #9391
" S() = default;\n"
" ~S() = default;\n"
" S(const S&) = default;\n"
" S(S&&) = default;\n"
" S& operator=(const S&) = default;\n"
" S& operator=(S&&) = default;\n"
" int i;\n"
"};\n");
ASSERT_EQUALS("[test.cpp:2]: (warning) Member variable 'S::i' is not initialized in the constructor.\n", errout.str());
}
void simple11() { // ticket #4536, #6214
check("class Fred {\n"
"public:\n"
" Fred() {}\n"
"private:\n"
" int x = 0;\n"
" int y = f();\n"
" int z{0};\n"
" int (*pf[2])(){nullptr, nullptr};\n"
" int a[2][3] = {{1,2,3},{4,5,6}};\n"
" int b{1}, c{2};\n"
" int d, e{3};\n"
" int f{4}, g;\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (warning) Member variable 'Fred::d' is not initialized in the constructor.\n"
"[test.cpp:3]: (warning) Member variable 'Fred::g' is not initialized in the constructor.\n", errout.str());
}
void simple12() { // ticket #4620
check("class Fred {\n"
" int x;\n"
"public:\n"
" Fred() { Init(); }\n"
" void Init(int i = 0);\n"
"};\n"
"void Fred::Init(int i) { x = i; }");
ASSERT_EQUALS("", errout.str());
check("class Fred {\n"
" int x;\n"
" int y;\n"
"public:\n"
" Fred() { Init(0); }\n"
" void Init(int i, int j = 0);\n"
"};\n"
"void Fred::Init(int i, int j) { x = i; y = j; }");
ASSERT_EQUALS("", errout.str());
}
void simple13() { // #5498
check("class Fred {\n"
" int x=1;\n"
" int *y=0;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void simple14() { // #6253 template base
check("class Fred : public Base<A, B> {"
"public:"
" Fred()\n"
" :Base<A, B>(1),\n"
" x(1)\n"
" {}\n"
"private:\n"
" int x;\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class Fred : public Base<A, B> {"
"public:"
" Fred()\n"
" :Base<A, B>{1},\n"
" x{1}\n"
" {}\n"
"private:\n"
" int x;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void simple16() {
check("struct S {\n"
" int i{};\n"
" S() = default;\n"
" S(const S& s) {}\n"
" S& operator=(const S& s) { return *this; }\n"
"};\n", /*inconclusive*/ true);
ASSERT_EQUALS("[test.cpp:4]: (warning, inconclusive) Member variable 'S::i' is not assigned in the copy constructor. Should it be copied?\n"
"[test.cpp:5]: (warning) Member variable 'S::i' is not assigned a value in 'S::operator='.\n",
errout.str());
check("struct S {\n"
" int i;\n"
" S() : i(0) {}\n"
" S(const S& s) {}\n"
" S& operator=(const S& s) { return *this; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'S::i' is not initialized in the copy constructor.\n"
"[test.cpp:5]: (warning) Member variable 'S::i' is not assigned a value in 'S::operator='.\n",
errout.str());
}
void simple17() { // #10360
check("class Base {\n"
"public:\n"
" virtual void Copy(const Base& Src) = 0;\n"
"};\n"
"class Derived : public Base {\n"
"public:\n"
" Derived() : i(0) {}\n"
" Derived(const Derived& Src);\n"
" void Copy(const Base& Src) override;\n"
" int i;\n"
"};\n"
"Derived::Derived(const Derived& Src) {\n"
" Copy(Src);\n"
"}\n"
"void Derived::Copy(const Base& Src) {\n"
" auto d = dynamic_cast<const Derived&>(Src);\n"
" i = d.i;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void simple15() { // #8942
check("class A\n"
"{\n"
"public:\n"
" int member;\n"
"};\n"
"class B\n"
"{\n"
"public:\n"
" B(const decltype(A::member)& x, const decltype(A::member)& y) : x(x), y(y) {}\n"
"private:\n"
" const decltype(A::member)& x;\n"
" const decltype(A::member)& y;\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void noConstructor1() {
// There are nonstatic member variables - constructor is needed
check("class Fred\n"
"{\n"
" int i;\n"
"};");
ASSERT_EQUALS("[test.cpp:1]: (style) The class 'Fred' does not declare a constructor although it has private member variables which likely require initialization.\n", errout.str());
}
void noConstructor2() {
check("class Fred\n"
"{\n"
"public:\n"
" static void foobar();\n"
"};\n"
"\n"
"void Fred::foobar()\n"
"{ }");
ASSERT_EQUALS("", errout.str());
}
void noConstructor3() {
check("class Fred\n"
"{\n"
"private:\n"
" static int foobar;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void noConstructor4() {
check("class Fred\n"
"{\n"
"public:\n"
" int foobar;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void noConstructor5() {
check("namespace Foo\n"
"{\n"
" int i;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void noConstructor6() {
// ticket #4386
check("class Ccpucycles {\n"
" friend class foo::bar;\n"
" Ccpucycles() :\n"
" m_v(0), m_b(true)\n"
" {}\n"
"private:\n"
" cpucyclesT m_v;\n"
" bool m_b;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void noConstructor7() {
// ticket #4391
check("short bar;\n"
"class foo;");
ASSERT_EQUALS("", errout.str());
}
void noConstructor8() {
// ticket #4404
check("class LineSegment;\n"
"class PointArray { };\n"
"void* tech_ = NULL;");
ASSERT_EQUALS("", errout.str());
}
void noConstructor9() {
// ticket #4419
check("class CGreeting : public CGreetingBase<char> {\n"
"public:\n"
" CGreeting() : CGreetingBase<char>(), MessageSet(false) {}\n"
"private:\n"
" bool MessageSet;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void noConstructor10() {
// ticket #6614
check("class A : public wxDialog\n"
"{\n"
"private:\n"
" DECLARE_EVENT_TABLE()\n"
"public:\n"
" A(wxWindow *parent,\n"
" wxWindowID id = 1,\n"
" const wxString &title = wxT(" "),\n"
" const wxPoint& pos = wxDefaultPosition,\n"
" const wxSize& size = wxDefaultSize,\n"
" long style = wxDIALOG_NO_PARENT | wxMINIMIZE_BOX | wxMAXIMIZE_BOX | wxCLOSE_BOX);\n"
" virtual ~A();\n"
"private:\n"
" wxTimer *WxTimer1;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void noConstructor11() { // #3552
check("class Fred { int x; };\n"
"union U { int y; Fred fred; };");
ASSERT_EQUALS("", errout.str());
}
void noConstructor12() { // #8951
check("class Fred { int x{0}; };");
ASSERT_EQUALS("", errout.str());
check("class Fred { int x=0; };");
ASSERT_EQUALS("", errout.str());
check("class Fred { int x[1]={0}; };"); // #8850
ASSERT_EQUALS("", errout.str());
check("class Fred { int x[1]{0}; };");
ASSERT_EQUALS("", errout.str());
}
void noConstructor13() { // #9998
check("struct C { int v; };\n"
"struct B { C c[5] = {}; };\n"
"struct A {\n"
" A() {}\n"
" B b;\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void noConstructor14() { // #10770
check("typedef void (*Func)();\n"
"class C {\n"
"public:\n"
" void f();\n"
"private:\n"
" Func fp = nullptr;\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void noConstructor15() { // #5499
check("class C {\n"
"private:\n"
" int i1 = 0;\n"
" int i2;\n"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'C::i2' is not initialized.\n", errout.str());
check("class C {\n"
"private:\n"
" int i1;\n"
" int i2;\n"
"};\n");
ASSERT_EQUALS("[test.cpp:1]: (style) The class 'C' does not declare a constructor although it has private member variables which likely require initialization.\n", errout.str());
check("class C {\n"
"public:\n"
" C(int i) : i1(i) {}\n"
"private:\n"
" int i1;\n"
" int i2;\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (warning) Member variable 'C::i2' is not initialized in the constructor.\n", errout.str());
}
// ticket #4290 "False Positive: style (noConstructor): The class 'foo' does not have a constructor."
// ticket #3190 "SymbolDatabase: Parse of sub class constructor fails"
void forwardDeclaration() {
check("class foo;\n"
"int bar;");
ASSERT_EQUALS("", errout.str());
check("class foo;\n"
"class foo;");
ASSERT_EQUALS("", errout.str());
check("class foo{};\n"
"class foo;");
ASSERT_EQUALS("", errout.str());
}
void initvar_with_this() {
check("struct Fred\n"
"{\n"
" Fred()\n"
" { this->i = 0; }\n"
" int i;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void initvar_if() {
check("struct Fred\n"
"{\n"
" Fred()\n"
" {\n"
" if (true)\n"
" i = 0;\n"
" else\n"
" i = 1;\n"
" }\n"
" int i;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void initvar_operator_eq1() {
// Bug 2190376 and #3820 - False positive, Uninitialized member variable with operator=
check("struct Fred\n"
"{\n"
" int i;\n"
"\n"
" Fred()\n"
" { i = 0; }\n"
"\n"
" Fred(const Fred &fred)\n"
" { *this = fred; }\n"
"\n"
" const Fred & operator=(const Fred &fred)\n"
" { i = fred.i; return *this; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct Fred {\n"
" int i;\n"
"\n"
" Fred(const Fred &fred)\n"
" { (*this) = fred; }\n"
"\n"
" const Fred & operator=(const Fred &fred)\n"
" { i = fred.i; return *this; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct A\n"
"{\n"
" A() : i(0), j(0) {}\n"
"\n"
" A &operator=(const int &value)\n"
" {\n"
" i = value;\n"
" return (*this);\n"
" }\n"
"\n"
" int i;\n"
" int j;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void initvar_operator_eq2() {
check("struct Fred\n"
"{\n"
" Fred() { i = 0; }\n"
" void operator=(const Fred &fred) { }\n"
" int i;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'Fred::i' is not assigned a value in 'Fred::operator='.\n", errout.str());
}
void initvar_operator_eq3() {
check("struct Fred\n"
"{\n"
" Fred() { Init(); }\n"
" void operator=(const Fred &fred) { Init(); }\n"
"private:\n"
" void Init() { i = 0; }\n"
" int i;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void initvar_operator_eq4() {
check("class Fred\n"
"{\n"
" int i;\n"
"public:\n"
" Fred() : i(5) { }\n"
" Fred & operator=(const Fred &fred)\n"
" {\n"
" if (&fred != this)\n"
" {\n"
" }\n"
" return *this\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:6]: (warning) Member variable 'Fred::i' is not assigned a value in 'Fred::operator='.\n", errout.str());
check("class Fred\n"
"{\n"
" int * i;\n"
"public:\n"
" Fred() : i(NULL) { }\n"
" Fred & operator=(const Fred &fred)\n"
" {\n"
" if (&fred != this)\n"
" {\n"
" }\n"
" return *this\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:6]: (warning) Member variable 'Fred::i' is not assigned a value in 'Fred::operator='.\n", errout.str());
check("class Fred\n"
"{\n"
" const int * i;\n"
"public:\n"
" Fred() : i(NULL) { }\n"
" Fred & operator=(const Fred &fred)\n"
" {\n"
" if (&fred != this)\n"
" {\n"
" }\n"
" return *this\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:6]: (warning) Member variable 'Fred::i' is not assigned a value in 'Fred::operator='.\n", errout.str());
check("class Fred\n"
"{\n"
" const int i;\n"
"public:\n"
" Fred() : i(5) { }\n"
" Fred & operator=(const Fred &fred)\n"
" {\n"
" if (&fred != this)\n"
" {\n"
" }\n"
" return *this\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void initvar_operator_eq5() { // #4119 - false positive when using swap to assign variables
check("class Fred {\n"
" int i;\n"
"public:\n"
" Fred() : i(5) { }\n"
" ~Fred() { }\n"
" Fred(const Fred &fred) : i(fred.i) { }\n"
" Fred & operator=(const Fred &rhs) {\n"
" Fred(rhs).swap(*this);\n"
" return *this;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void initvar_operator_eq6() { // std::vector
check("struct Fred {\n"
" uint8_t data;\n"
" Fred & operator=(const Fred &rhs) {\n"
" return *this;\n"
" }\n"
"};",true);
ASSERT_EQUALS("[test.cpp:3]: (warning, inconclusive) Member variable 'Fred::data' is not assigned a value in 'Fred::operator='.\n", errout.str());
check("struct Fred {\n"
" std::vector<int> ints;\n"
" Fred & operator=(const Fred &rhs) {\n"
" return *this;\n"
" }\n"
"};",true);
ASSERT_EQUALS("[test.cpp:3]: (warning, inconclusive) Member variable 'Fred::ints' is not assigned a value in 'Fred::operator='.\n", errout.str());
check("struct Fred {\n"
" Data data;\n"
" Fred & operator=(const Fred &rhs) {\n"
" return *this;\n"
" }\n"
"};",true);
ASSERT_EQUALS("[test.cpp:3]: (warning, inconclusive) Member variable 'Fred::data' is not assigned a value in 'Fred::operator='.\n", errout.str());
}
void initvar_operator_eq7() {
check("struct B {\n"
" virtual void CopyImpl(const B& Src) = 0;\n"
" void Copy(const B& Src);\n"
"};\n"
"struct D : B {};\n"
"struct DD : D {\n"
" void CopyImpl(const B& Src) override;\n"
" DD& operator=(const DD& Src);\n"
" int i{};\n"
"};\n"
"DD& DD::operator=(const DD& Src) {\n"
" if (this != &Src)\n"
" Copy(Src);\n"
" return *this;\n"
"}\n", true);
ASSERT_EQUALS("", errout.str());
}
void initvar_operator_eq8() {
check("struct B {\n"
" int b;\n"
"};\n"
"struct D1 : B {\n"
" D1& operator=(const D1& src);\n"
" int d1;\n"
"};\n"
"struct D2 : D1 {\n"
" D2& operator=(const D2& src);\n"
" int d2;\n"
"};\n"
"struct D3 : D2 {\n"
" D3& operator=(const D3& src) {\n"
" D1::operator=(src);\n"
" d3_1 = src.d3_1;\n"
" }\n"
" int d3_1;\n"
" int d3_2;\n"
"}\n");
ASSERT_EQUALS("[test.cpp:13]: (warning) Member variable 'D3::d3_2' is not assigned a value in 'D3::operator='.\n"
"[test.cpp:13]: (warning) Member variable 'D3::d2' is not assigned a value in 'D3::operator='.\n", errout.str());
}
void initvar_same_classname() {
// Bug 2208157 - False positive: Uninitialized variable, same class name
check("void func1()\n"
"{\n"
" class Fred\n"
" {\n"
" int a;\n"
" Fred() { a = 0; }\n"
" };\n"
"}\n"
"\n"
"void func2()\n"
"{\n"
" class Fred\n"
" {\n"
" int b;\n"
" Fred() { b = 0; }\n"
" };\n"
"}");
ASSERT_EQUALS("", errout.str());
check("void func1()\n"
"{\n"
" struct Fred\n"
" {\n"
" int a;\n"
" Fred() { a = 0; }\n"
" };\n"
"}\n"
"\n"
"void func2()\n"
"{\n"
" class Fred\n"
" {\n"
" int b;\n"
" Fred() { b = 0; }\n"
" };\n"
"}");
ASSERT_EQUALS("", errout.str());
check("void func1()\n"
"{\n"
" struct Fred\n"
" {\n"
" int a;\n"
" Fred() { a = 0; }\n"
" };\n"
"}\n"
"\n"
"void func2()\n"
"{\n"
" struct Fred\n"
" {\n"
" int b;\n"
" Fred() { b = 0; }\n"
" };\n"
"}");
ASSERT_EQUALS("", errout.str());
check("class Foo {\n"
" void func1()\n"
" {\n"
" struct Fred\n"
" {\n"
" int a;\n"
" Fred() { a = 0; }\n"
" };\n"
" }\n"
"\n"
" void func2()\n"
" {\n"
" struct Fred\n"
" {\n"
" int b;\n"
" Fred() { b = 0; }\n"
" };\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class Foo {\n"
" void func1()\n"
" {\n"
" struct Fred\n"
" {\n"
" int a;\n"
" Fred() { }\n"
" };\n"
" }\n"
"\n"
" void func2()\n"
" {\n"
" struct Fred\n"
" {\n"
" int b;\n"
" Fred() { }\n"
" };\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:7]: (warning) Member variable 'Fred::a' is not initialized in the constructor.\n"
"[test.cpp:16]: (warning) Member variable 'Fred::b' is not initialized in the constructor.\n", errout.str());
}
void initvar_chained_assign() {
// Bug 2270433 - Uninitialized variable false positive on chained assigns
check("struct c\n"
"{\n"
" c();\n"
"\n"
" int m_iMyInt1;\n"
" int m_iMyInt2;\n"
"}\n"
"\n"
"c::c()\n"
"{\n"
" m_iMyInt1 = m_iMyInt2 = 0;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void initvar_2constructors() {
check("struct c\n"
"{\n"
" c();\n"
" explicit c(bool b);"
"\n"
" void InitInt();\n"
"\n"
" int m_iMyInt;\n"
" int m_bMyBool;\n"
"}\n"
"\n"
"c::c()\n"
"{\n"
" m_bMyBool = false;\n"
" InitInt();"
"}\n"
"\n"
"c::c(bool b)\n"
"{\n"
" m_bMyBool = b;\n"
" InitInt();\n"
"}\n"
"\n"
"void c::InitInt()\n"
"{\n"
" m_iMyInt = 0;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void initvar_constvar() {
check("struct Fred\n"
"{\n"
" const char *s;\n"
" Fred();\n"
"};\n"
"Fred::Fred() : s(NULL)\n"
"{ }");
ASSERT_EQUALS("", errout.str());
check("struct Fred\n"
"{\n"
" const char *s;\n"
" Fred();\n"
"};\n"
"Fred::Fred()\n"
"{ s = NULL; }");
ASSERT_EQUALS("", errout.str());
check("struct Fred\n"
"{\n"
" const char *s;\n"
" Fred();\n"
"};\n"
"Fred::Fred()\n"
"{ }");
ASSERT_EQUALS("[test.cpp:6]: (warning) Member variable 'Fred::s' is not initialized in the constructor.\n", errout.str());
}
void initvar_staticvar() {
check("class Fred\n"
"{\n"
"public:\n"
" Fred() { }\n"
" static void *p;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void initvar_brace_init() { // #10142
check("class C\n"
"{\n"
"public:\n"
" C() {}\n"
"\n"
"private:\n"
" std::map<int, double> * values_{};\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void initvar_union() {
check("class Fred\n"
"{\n"
" union\n"
" {\n"
" int a;\n"
" char b[4];\n"
" } U;\n"
"public:\n"
" Fred()\n"
" {\n"
" U.a = 0;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class Fred\n"
"{\n"
" union\n"
" {\n"
" int a;\n"
" char b[4];\n"
" } U;\n"
"public:\n"
" Fred()\n"
" {\n"
" }\n"
"};");
TODO_ASSERT_EQUALS("[test.cpp:9]: (warning) Member variable 'Fred::U' is not initialized in the constructor.\n", "", errout.str());
}
void initvar_delegate() {
check("class A {\n"
" int number;\n"
"public:\n"
" A(int n) { }\n"
" A() : A(42) {}\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'A::number' is not initialized in the constructor.\n"
"[test.cpp:5]: (warning) Member variable 'A::number' is not initialized in the constructor.\n", errout.str());
check("class A {\n"
" int number;\n"
"public:\n"
" A(int n) { number = n; }\n"
" A() : A(42) {}\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class A {\n"
" int number;\n"
"public:\n"
" A(int n) : A() { }\n"
" A() {}\n"
"};", true);
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'A::number' is not initialized in the constructor.\n"
"[test.cpp:5]: (warning, inconclusive) Member variable 'A::number' is not initialized in the constructor.\n", errout.str());
check("class A {\n"
" int number;\n"
"public:\n"
" A(int n) : A() { }\n"
" A() { number = 42; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class A {\n"
" int number;\n"
"public:\n"
" A(int n) { }\n"
" A() : A{42} {}\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'A::number' is not initialized in the constructor.\n"
"[test.cpp:5]: (warning) Member variable 'A::number' is not initialized in the constructor.\n", errout.str());
check("class A {\n"
" int number;\n"
"public:\n"
" A(int n) { number = n; }\n"
" A() : A{42} {}\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class A {\n"
" int number;\n"
"public:\n"
" A(int n) : A{} { }\n"
" A() {}\n"
"};", true);
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'A::number' is not initialized in the constructor.\n"
"[test.cpp:5]: (warning, inconclusive) Member variable 'A::number' is not initialized in the constructor.\n", errout.str());
check("class A {\n"
" int number;\n"
"public:\n"
" A(int n) : A{} { }\n"
" A() { number = 42; }\n"
"};");
ASSERT_EQUALS("", errout.str());
// Ticket #6675
check("struct Foo {\n"
" Foo();\n"
" Foo(int foo);\n"
" int foo_;\n"
"};\n"
"Foo::Foo() : Foo(0) {}\n"
"Foo::Foo(int foo) : foo_(foo) {}");
ASSERT_EQUALS("", errout.str());
// Noexcept ctors
check("class A {\n"
"private:\n"
" int _a;\n"
"public:\n"
" A(const int a) noexcept : _a{a} {}\n"
" A() noexcept;\n"
"};\n"
"\n"
"A::A() noexcept: A(0) {}");
ASSERT_EQUALS("", errout.str());
// Ticket #8581
check("class A {\n"
"private:\n"
" int _a;\n"
"public:\n"
" A(int a) : _a(a) {}\n"
" A(float a) : A(int(a)) {}\n"
"};");
ASSERT_EQUALS("", errout.str());
// Ticket #8258
check("struct F{};\n"
"struct Foo {\n"
" Foo(int a, F&& f, int b = 21) : _a(a), _b(b), _f(f) {}\n"
" Foo(int x, const char* value) : Foo(x, F(), 42) {}\n"
" Foo(int x, int* value) : Foo(x, F()) {}\n"
" int _a;\n"
" int _b;\n"
" F _f;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void initvar_delegate2() {
check("class Foo {\n"
"public:\n"
" explicit Foo(const Bar bar);\n"
" Foo(const std::string& id);\n"
" virtual ~RtpSession() { }\n"
"protected:\n"
" bool a;\n"
" uint16_t b;\n"
"};\n"
"\n"
"Foo::Foo(const Bar var)\n"
" : Foo(bar->getId())\n"
"{\n"
"}\n"
"\n"
"Foo::Foo(const std::string& id)\n"
" : a(true)\n"
" , b(0)\n"
"{\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void initvar_derived_class() {
check("class Base {\n" // #10161
"public:\n"
" virtual void foo() = 0;\n"
" int x;\n" // <- uninitialized
"};\n"
"\n"
"class Derived: public Base {\n"
"public:\n"
" Derived() {}\n"
" void foo() override;\n"
"};");
ASSERT_EQUALS("[test.cpp:9]: (warning) Member variable 'Base::x' is not initialized in the constructor. Maybe it should be initialized directly in the class Base?\n", errout.str());
check("struct A {\n" // #3462
" char ca;\n"
" A& operator=(const A& a) {\n"
" ca = a.ca;\n"
" return *this;\n"
" }\n"
"};\n"
"struct B : public A {\n"
" char cb;\n"
" B& operator=(const B& b) {\n"
" A::operator=(b);\n"
" return *this;\n"
" }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:10]: (warning) Member variable 'B::cb' is not assigned a value in 'B::operator='.\n", errout.str());
check("struct A {\n"
" char ca;\n"
" A& operator=(const A& a) {\n"
" return *this;\n"
" }\n"
"};\n"
"struct B : public A {\n"
" char cb;\n"
" B& operator=(const B& b) {\n"
" A::operator=(b);\n"
" return *this;\n"
" }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (warning) Member variable 'A::ca' is not assigned a value in 'A::operator='.\n"
"[test.cpp:9]: (warning) Member variable 'B::cb' is not assigned a value in 'B::operator='.\n"
"[test.cpp:9]: (warning) Member variable 'B::ca' is not assigned a value in 'B::operator='.\n",
errout.str());
check("class C : B {\n"
" virtual C& operator=(C& c);\n"
"};\n"
"class D : public C {\n"
" virtual C& operator=(C& c) { return C::operator=(c); };\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void initvar_derived_pod_struct_with_union() {
check("struct S {\n"
" union {\n"
" unsigned short all;\n"
" struct {\n"
" unsigned char flag1;\n"
" unsigned char flag2;\n"
" };\n"
" };\n"
"};\n"
"\n"
"class C : public S {\n"
"public:\n"
" C() { all = 0; tick = 0; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct S {\n"
" union {\n"
" unsigned short all;\n"
" struct {\n"
" unsigned char flag1;\n"
" unsigned char flag2;\n"
" };\n"
" };\n"
"};\n"
"\n"
"class C : public S {\n"
"public:\n"
" C() {}\n"
"};");
ASSERT_EQUALS("[test.cpp:13]: (warning) Member variable 'S::all' is not initialized in the constructor. Maybe it should be initialized directly in the class S?\n"
"[test.cpp:13]: (warning) Member variable 'S::flag1' is not initialized in the constructor. Maybe it should be initialized directly in the class S?\n"
"[test.cpp:13]: (warning) Member variable 'S::flag2' is not initialized in the constructor. Maybe it should be initialized directly in the class S?\n", errout.str());
}
void initvar_private_constructor() {
settings.standards.cpp = Standards::CPP11;
check("class Fred\n"
"{\n"
"private:\n"
" int var;\n"
" Fred();\n"
"};\n"
"Fred::Fred()\n"
"{ }");
ASSERT_EQUALS("[test.cpp:7]: (warning) Member variable 'Fred::var' is not initialized in the constructor.\n", errout.str());
settings.standards.cpp = Standards::CPP03;
check("class Fred\n"
"{\n"
"private:\n"
" int var;\n"
" Fred();\n"
"};\n"
"Fred::Fred()\n"
"{ }");
ASSERT_EQUALS("", errout.str());
}
void initvar_copy_constructor() { // ticket #1611
check("class Fred\n"
"{\n"
"private:\n"
" std::string var;\n"
"public:\n"
" Fred() { };\n"
" Fred(const Fred &) { };\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class Fred\n"
"{\n"
"private:\n"
" std::string var;\n"
"public:\n"
" Fred() { };\n"
" Fred(const Fred &) { };\n"
"};", true);
ASSERT_EQUALS("[test.cpp:7]: (warning, inconclusive) Member variable 'Fred::var' is not assigned in the copy constructor. Should it be copied?\n", errout.str());
check("class Fred\n"
"{\n"
"private:\n"
" std::string var;\n"
"public:\n"
" Fred();\n"
" Fred(const Fred &);\n"
"};\n"
"Fred::Fred() { };\n"
"Fred::Fred(const Fred &) { };\n", true);
ASSERT_EQUALS("[test.cpp:10]: (warning, inconclusive) Member variable 'Fred::var' is not assigned in the copy constructor. Should it be copied?\n", errout.str());
check("class Baz {};\n" // #8496
"class Bar {\n"
"public:\n"
" explicit Bar(Baz* pBaz = NULL) : i(0) {}\n"
" Bar(const Bar& bar) {}\n"
" int i;\n"
"};\n", true);
ASSERT_EQUALS("[test.cpp:5]: (warning) Member variable 'Bar::i' is not initialized in the copy constructor.\n", errout.str());
}
void initvar_nested_constructor() { // ticket #1375
check("class A {\n"
"public:\n"
" A();\n"
" struct B {\n"
" explicit B(int x);\n"
" struct C {\n"
" explicit C(int y);\n"
" struct D {\n"
" int d;\n"
" explicit D(int z);\n"
" };\n"
" int c;\n"
" };\n"
" int b;\n"
" };\n"
"private:\n"
" int a;\n"
" B b;\n"
"};\n"
"A::A(){}\n"
"A::B::B(int x){}\n"
"A::B::C::C(int y){}\n"
"A::B::C::D::D(int z){}");
// Note that the example code is not compilable. The A constructor must
// explicitly initialize A::b. A warning for A::b is not necessary.
ASSERT_EQUALS("[test.cpp:20]: (warning) Member variable 'A::a' is not initialized in the constructor.\n"
"[test.cpp:21]: (warning) Member variable 'B::b' is not initialized in the constructor.\n"
"[test.cpp:22]: (warning) Member variable 'C::c' is not initialized in the constructor.\n"
"[test.cpp:23]: (warning) Member variable 'D::d' is not initialized in the constructor.\n", errout.str());
check("class A {\n"
"public:\n"
" A();\n"
" struct B {\n"
" explicit B(int x);\n"
" struct C {\n"
" explicit C(int y);\n"
" struct D {\n"
" D(const D &);\n"
" int d;\n"
" };\n"
" int c;\n"
" };\n"
" int b;\n"
" };\n"
"private:\n"
" int a;\n"
" B b;\n"
"};\n"
"A::A(){}\n"
"A::B::B(int x){}\n"
"A::B::C::C(int y){}\n"
"A::B::C::D::D(const A::B::C::D & d){}");
// Note that the example code is not compilable. The A constructor must
// explicitly initialize A::b. A warning for A::b is not necessary.
ASSERT_EQUALS("[test.cpp:20]: (warning) Member variable 'A::a' is not initialized in the constructor.\n"
"[test.cpp:21]: (warning) Member variable 'B::b' is not initialized in the constructor.\n"
"[test.cpp:22]: (warning) Member variable 'C::c' is not initialized in the constructor.\n"
"[test.cpp:23]: (warning) Member variable 'D::d' is not initialized in the copy constructor.\n", errout.str());
check("class A {\n"
"public:\n"
" A();\n"
" struct B {\n"
" explicit B(int x);\n"
" struct C {\n"
" explicit C(int y);\n"
" struct D {\n"
" struct E { int e; };\n"
" struct E d;\n"
" explicit D(const E &);\n"
" };\n"
" int c;\n"
" };\n"
" int b;\n"
" };\n"
"private:\n"
" int a;\n"
" B b;\n"
"};\n"
"A::A(){}\n"
"A::B::B(int x){}\n"
"A::B::C::C(int y){}\n"
"A::B::C::D::D(const A::B::C::D::E & e){}");
// Note that the example code is not compilable. The A constructor must
// explicitly initialize A::b. A warning for A::b is not necessary.
ASSERT_EQUALS("[test.cpp:21]: (warning) Member variable 'A::a' is not initialized in the constructor.\n"
"[test.cpp:22]: (warning) Member variable 'B::b' is not initialized in the constructor.\n"
"[test.cpp:23]: (warning) Member variable 'C::c' is not initialized in the constructor.\n"
"[test.cpp:24]: (warning) Member variable 'D::d' is not initialized in the constructor.\n", errout.str());
}
void initvar_nocopy1() { // ticket #2474
check("class B\n"
"{\n"
" B (const B & Var);\n"
"};\n"
"class A\n"
"{\n"
" B m_SemVar;\n"
"public:\n"
" A(){}\n"
" A(const A&){}\n"
" A(A &&){}\n"
" const A& operator=(const A&){return *this;}\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class B\n"
"{\n"
" B (B && Var);\n"
"};\n"
"class A\n"
"{\n"
" B m_SemVar;\n"
"public:\n"
" A(){}\n"
" A(const A&){}\n"
" A(A &&){}\n"
" const A& operator=(const A&){return *this;}\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class B\n"
"{\n"
" B & operator= (const B & Var);\n"
"public:\n"
" B ();\n"
"};\n"
"class A\n"
"{\n"
" B m_SemVar;\n"
"public:\n"
" A(){}\n"
" A(const A&){}\n"
" A(A &&){}\n"
" const A& operator=(const A&){return *this;}\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class B\n"
"{\n"
"public:\n"
" B (const B & Var);\n"
"};\n"
"class A\n"
"{\n"
" B m_SemVar;\n"
"public:\n"
" A(){}\n"
" A(const A&){}\n"
" A(A &&){}\n"
" const A& operator=(const A&){return *this;}\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class A : public std::vector<int>\n"
"{\n"
"public:\n"
" A(const A &a);\n"
"};\n"
"class B\n"
"{\n"
" A a;\n"
"public:\n"
" B(){}\n"
" B(const B&){}\n"
" B(B &&){}\n"
" const B& operator=(const B&){return *this;}\n"
"};", true);
ASSERT_EQUALS("[test.cpp:11]: (warning, inconclusive) Member variable 'B::a' is not assigned in the copy constructor. Should it be copied?\n"
"[test.cpp:12]: (warning, inconclusive) Member variable 'B::a' is not assigned in the move constructor. Should it be moved?\n"
"[test.cpp:13]: (warning, inconclusive) Member variable 'B::a' is not assigned a value in 'B::operator='.\n",
errout.str());
check("class B\n"
"{\n"
"public:\n"
" B (B && Var);\n"
" int data;\n"
"};\n"
"class A\n"
"{\n"
" B m_SemVar;\n"
"public:\n"
" A(){}\n"
" A(const A&){}\n"
" A(A &&){}\n"
" const A& operator=(const A&){return *this;}\n"
"};");
ASSERT_EQUALS("[test.cpp:13]: (warning) Member variable 'A::m_SemVar' is not initialized in the move constructor.\n", errout.str());
check("class B\n"
"{\n"
"public:\n"
" B ();\n"
" B & operator= (const B & Var);\n"
" int data;\n"
"};\n"
"class A\n"
"{\n"
" B m_SemVar;\n"
"public:\n"
" A(){}\n"
" A(const A&){}\n"
" A(A &&){}\n"
" const A& operator=(const A&){return *this;}\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class A\n"
"{\n"
" B m_SemVar;\n"
"public:\n"
" A(){}\n"
" A(const A&){}\n"
" const A& operator=(const A&){return *this;}\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void initvar_nocopy2() { // ticket #2484
check("class B\n"
"{\n"
" B (B & Var);\n"
" B & operator= (const B & Var);\n"
" int data;\n"
"};\n"
"class A\n"
"{\n"
" B m_SemVar;\n"
"public:\n"
" A(){}\n"
" A(const A&){}\n"
" const A& operator=(const A&){return *this;}\n"
"};", true);
ASSERT_EQUALS("", errout.str());
check("class B\n"
"{\n"
"public:\n"
" B (B & Var);\n"
" B & operator= (const B & Var);\n"
" int data;\n"
"};\n"
"class A\n"
"{\n"
" B m_SemVar;\n"
"public:\n"
" A(){}\n"
" A(const A&){}\n"
" const A& operator=(const A&){return *this;}\n"
"};", true);
ASSERT_EQUALS("[test.cpp:12]: (warning) Member variable 'A::m_SemVar' is not initialized in the constructor.\n"
"[test.cpp:13]: (warning) Member variable 'A::m_SemVar' is not initialized in the copy constructor.\n"
"[test.cpp:14]: (warning) Member variable 'A::m_SemVar' is not assigned a value in 'A::operator='.\n", errout.str());
}
void initvar_nocopy3() { // #3611 - unknown type is non-copyable
check("struct A {\n"
" B b;\n"
" A() {}\n"
" A(const A& rhs) {}\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct A {\n"
" B b;\n"
" A() {}\n"
" A(const A& rhs) {}\n"
"};", true);
ASSERT_EQUALS("[test.cpp:4]: (warning, inconclusive) Member variable 'A::b' is not assigned in the copy constructor. Should it be copied?\n", errout.str());
}
void initvar_nocopy4() { // #9247
check("struct S {\n"
" S(const S & s);\n"
" void S::Set(const T& val);\n"
" void S::Set(const U& val);\n"
" T t;\n"
"};\n"
"S::S(const S& s) {\n"
" Set(s.t);\n"
"}\n"
"void S::Set(const T& val) {\n"
" t = val;\n"
"}", /*inconclusive*/ true);
ASSERT_EQUALS("", errout.str());
}
void initvar_with_member_function_this() {
check("struct Foo {\n"
" Foo(int m) { this->setMember(m); }\n"
" void setMember(int m) { member = m; }\n"
" int member;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void initvar_destructor() {
check("class Fred\n"
"{\n"
"private:\n"
" int var;\n"
"public:\n"
" Fred() : var(0) {}\n"
" ~Fred() {}\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void initvar_func_ret_func_ptr() { // ticket #4449 (segmentation fault)
check("class something {\n"
" int * ( something :: * process()) () { return 0; }\n"
" something() { process(); }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void initvar_alias() { // #6921
check("struct S {\n"
" int a;\n"
" S() {\n"
" int& pa = a;\n"
" pa = 4;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct S {\n"
" int a;\n"
" S() {\n"
" int* pa = &a;\n"
" *pa = 4;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct S {\n"
" int a[2];\n"
" S() {\n"
" int* pa = a;\n"
" for (int i = 0; i < 2; i++)\n"
" *pa++ = i;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct S {\n"
" int* a[2];\n"
" S() {\n"
" int* pa = a[1];\n"
" *pa = 0;\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (warning) Member variable 'S::a' is not initialized in the constructor.\n", errout.str());
check("struct S {\n"
" int a;\n"
" S() {\n"
" int pa = a;\n"
" pa = 4;\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (warning) Member variable 'S::a' is not initialized in the constructor.\n", errout.str());
}
void initvar_templateMember() {
check("template<int n_>\n"
"struct Wrapper {\n"
" static void foo(int * x) {\n"
" for (int i(0); i <= n_; ++i)\n"
" x[i] = 5;\n"
" }\n"
"};\n"
"class A {\n"
"public:\n"
" static constexpr int dim = 5;\n"
" int x[dim + 1];\n"
" A() {\n"
" Wrapper<dim>::foo(x);\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void initvar_smartptr() { // #10237
Settings s;
s.libraries.emplace_back("std");
check("struct S {\n"
" explicit S(const std::shared_ptr<S>& sp) {\n"
" set(*sp);\n"
" }\n"
" double get() const {\n"
" return d;\n"
" }\n"
" void set(const S& rhs) {\n"
" d = rhs.get();\n"
" }\n"
" double d;\n"
"};", s);
ASSERT_EQUALS("", errout.str());
check("struct S {\n" // #8485
" explicit S(const T& rhs) { set(*rhs); }\n"
" void set(const S& v) {\n"
" d = v.d;\n"
" }\n"
" double d; \n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void operatorEqSTL() {
check("class Fred\n"
"{\n"
"private:\n"
" std::vector<int> ints;\n"
"public:\n"
" Fred();\n"
" void operator=(const Fred &f);\n"
"};\n"
"\n"
"Fred::Fred()\n"
"{ }\n"
"\n"
"void Fred::operator=(const Fred &f)\n"
"{ }", true);
ASSERT_EQUALS("[test.cpp:13]: (warning, inconclusive) Member variable 'Fred::ints' is not assigned a value in 'Fred::operator='.\n", errout.str());
Settings s;
s.certainty.setEnabled(Certainty::inconclusive, true);
s.severity.enable(Severity::style);
s.severity.enable(Severity::warning);
LOAD_LIB_2(s.library, "std.cfg");
check("struct S {\n"
" S& operator=(const S& s) { return *this; }\n"
" std::mutex m;\n"
"};\n", s);
ASSERT_EQUALS("", errout.str());
}
void uninitVar1() {
check("enum ECODES\n"
"{\n"
" CODE_1 = 0,\n"
" CODE_2 = 1\n"
"};\n"
"\n"
"class Fred\n"
"{\n"
"public:\n"
" Fred() {}\n"
"\n"
"private:\n"
" ECODES _code;\n"
"};");
ASSERT_EQUALS("[test.cpp:10]: (warning) Member variable 'Fred::_code' is not initialized in the constructor.\n", errout.str());
check("class A{};\n"
"\n"
"class B : public A\n"
"{\n"
"public:\n"
" B() {}\n"
"private:\n"
" float f;\n"
"};");
ASSERT_EQUALS("[test.cpp:6]: (warning) Member variable 'B::f' is not initialized in the constructor.\n", errout.str());
check("class C\n"
"{\n"
" FILE *fp;\n"
"\n"
"public:\n"
" explicit C(FILE *fp);\n"
"};\n"
"\n"
"C::C(FILE *fp) {\n"
" C::fp = fp;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void uninitVar2() {
check("class John\n"
"{\n"
"public:\n"
" John() { (*this).i = 0; }\n"
"private:\n"
" int i;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVar3() {
// No FP when struct has constructor
check("class Foo\n"
"{\n"
"public:\n"
" Foo() { }\n"
"private:\n"
" struct Bar {\n"
" Bar();\n"
" };\n"
" Bar bars[2];\n"
"};");
ASSERT_EQUALS("", errout.str());
// Using struct that doesn't have constructor
check("class Foo\n"
"{\n"
"public:\n"
" Foo() { }\n"
"private:\n"
" struct Bar {\n"
" int x;\n"
" };\n"
" Bar bars[2];\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'Foo::bars' is not initialized in the constructor.\n", errout.str());
}
void uninitVar4() {
check("class Foo\n"
"{\n"
"public:\n"
" Foo() { bar.x = 0; }\n"
"private:\n"
" struct Bar {\n"
" int x;\n"
" };\n"
" struct Bar bar;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVar5() {
check("class Foo\n"
"{\n"
"public:\n"
" Foo() { }\n"
" Foo &operator=(const Foo &)\n"
" { return *this; }\n"
" static int i;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVar6() {
check("class Foo : public Bar\n"
"{\n"
"public:\n"
" explicit Foo(int i) : Bar(mi=i) { }\n"
"private:\n"
" int mi;\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class Foo : public Bar\n"
"{\n"
"public:\n"
" explicit Foo(int i) : Bar{mi=i} { }\n"
"private:\n"
" int mi;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVar7() {
check("class Foo {\n"
" int a;\n"
"public:\n"
" Foo() : a(0) {}\n"
" Foo& operator=(const Foo&);\n"
" void Swap(Foo& rhs);\n"
"};\n"
"\n"
"void Foo::Swap(Foo& rhs) {\n"
" std::swap(a,rhs.a);\n"
"}\n"
"\n"
"Foo& Foo::operator=(const Foo& rhs) {\n"
" Foo copy(rhs);\n"
" copy.Swap(*this);\n"
" return *this;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void uninitVar8() {
check("class Foo {\n"
" int a;\n"
"public:\n"
" Foo() : a(0) {}\n"
" Foo& operator=(const Foo&);\n"
"};\n"
"\n"
"Foo& Foo::operator=(const Foo& rhs) {\n"
" if (&rhs != this)\n"
" {\n"
" }\n"
" return *this;\n"
"}");
ASSERT_EQUALS("[test.cpp:8]: (warning) Member variable 'Foo::a' is not assigned a value in 'Foo::operator='.\n", errout.str());
}
void uninitVar9() { // ticket #1730
check("class Prefs {\n"
"private:\n"
" int xasd;\n"
"public:\n"
" explicit Prefs(wxSize size);\n"
"};\n"
"Prefs::Prefs(wxSize size)\n"
"{\n"
" SetMinSize( wxSize( 48,48 ) );\n"
"}");
ASSERT_EQUALS("[test.cpp:7]: (warning) Member variable 'Prefs::xasd' is not initialized in the constructor.\n", errout.str());
}
void uninitVar10() { // ticket #1993
check("class A {\n"
"public:\n"
" A();\n"
"private:\n"
" int var1;\n"
" int var2;\n"
"};\n"
"A::A() : var1(0) { }");
ASSERT_EQUALS("[test.cpp:8]: (warning) Member variable 'A::var2' is not initialized in the constructor.\n", errout.str());
}
void uninitVar11() {
check("class A {\n"
"public:\n"
" explicit A(int a = 0);\n"
"private:\n"
" int var;\n"
"};\n"
"A::A(int a) { }");
ASSERT_EQUALS("[test.cpp:7]: (warning) Member variable 'A::var' is not initialized in the constructor.\n", errout.str());
}
void uninitVar12() { // ticket #2078
check("class Point\n"
"{\n"
"public:\n"
" Point()\n"
" {\n"
" Point(0, 0);\n"
" }\n"
" Point(int x, int y)\n"
" : x(x), y(y)\n"
" {}\n"
" int x, y;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'Point::x' is not initialized in the constructor.\n"
"[test.cpp:4]: (warning) Member variable 'Point::y' is not initialized in the constructor.\n", errout.str());
}
void uninitVar13() { // ticket #1195
check("class A {\n"
"private:\n"
" std::vector<int> *ints;\n"
"public:\n"
" A()\n"
" {}\n"
"};");
ASSERT_EQUALS("[test.cpp:5]: (warning) Member variable 'A::ints' is not initialized in the constructor.\n", errout.str());
}
void uninitVar14() { // ticket #2149
// no namespace
check("class Foo\n"
"{\n"
"public:\n"
" Foo();\n"
"private:\n"
" bool mMember;\n"
"};\n"
"Foo::Foo()\n"
"{\n"
"}");
ASSERT_EQUALS("[test.cpp:8]: (warning) Member variable 'Foo::mMember' is not initialized in the constructor.\n", errout.str());
// single namespace
check("namespace Output\n"
"{\n"
" class Foo\n"
" {\n"
" public:\n"
" Foo();\n"
" private:\n"
" bool mMember;\n"
" };\n"
" Foo::Foo()\n"
" {\n"
" }\n"
"}");
ASSERT_EQUALS("[test.cpp:10]: (warning) Member variable 'Foo::mMember' is not initialized in the constructor.\n", errout.str());
// constructor outside namespace
check("namespace Output\n"
"{\n"
" class Foo\n"
" {\n"
" public:\n"
" Foo();\n"
" private:\n"
" bool mMember;\n"
" };\n"
"}\n"
"Foo::Foo()\n"
"{\n"
"}");
ASSERT_EQUALS("", errout.str());
// constructor outside namespace
check("namespace Output\n"
"{\n"
" class Foo\n"
" {\n"
" public:\n"
" Foo();\n"
" private:\n"
" bool mMember;\n"
" };\n"
"}\n"
"Output::Foo::Foo()\n"
"{\n"
"}");
ASSERT_EQUALS("[test.cpp:11]: (warning) Member variable 'Foo::mMember' is not initialized in the constructor.\n", errout.str());
// constructor outside namespace with using, #4792
check("namespace Output\n"
"{\n"
" class Foo\n"
" {\n"
" public:\n"
" Foo();\n"
" private:\n"
" bool mMember;\n"
" };\n"
"}\n"
"using namespace Output;"
"Foo::Foo()\n"
"{\n"
"}");
ASSERT_EQUALS("[test.cpp:11]: (warning) Member variable 'Foo::mMember' is not initialized in the constructor.\n", errout.str());
// constructor in separate namespace
check("namespace Output\n"
"{\n"
" class Foo\n"
" {\n"
" public:\n"
" Foo();\n"
" private:\n"
" bool mMember;\n"
" };\n"
"}\n"
"namespace Output\n"
"{\n"
" Foo::Foo()\n"
" {\n"
" }\n"
"}");
ASSERT_EQUALS("[test.cpp:13]: (warning) Member variable 'Foo::mMember' is not initialized in the constructor.\n", errout.str());
// constructor in different separate namespace
check("namespace Output\n"
"{\n"
" class Foo\n"
" {\n"
" public:\n"
" Foo();\n"
" private:\n"
" bool mMember;\n"
" };\n"
"}\n"
"namespace Input\n"
"{\n"
" Foo::Foo()\n"
" {\n"
" }\n"
"}");
ASSERT_EQUALS("", errout.str());
// constructor in different separate namespace (won't compile)
check("namespace Output\n"
"{\n"
" class Foo\n"
" {\n"
" public:\n"
" Foo();\n"
" private:\n"
" bool mMember;\n"
" };\n"
"}\n"
"namespace Input\n"
"{\n"
" Output::Foo::Foo()\n"
" {\n"
" }\n"
"}");
ASSERT_EQUALS("", errout.str());
// constructor in nested separate namespace
check("namespace A\n"
"{\n"
" namespace Output\n"
" {\n"
" class Foo\n"
" {\n"
" public:\n"
" Foo();\n"
" private:\n"
" bool mMember;\n"
" };\n"
" }\n"
" namespace Output\n"
" {\n"
" Foo::Foo()\n"
" {\n"
" }\n"
" }\n"
"}");
ASSERT_EQUALS("[test.cpp:15]: (warning) Member variable 'Foo::mMember' is not initialized in the constructor.\n", errout.str());
// constructor in nested different separate namespace
check("namespace A\n"
"{\n"
" namespace Output\n"
" {\n"
" class Foo\n"
" {\n"
" public:\n"
" Foo();\n"
" private:\n"
" bool mMember;\n"
" };\n"
" }\n"
" namespace Input\n"
" {\n"
" Foo::Foo()\n"
" {\n"
" }\n"
" }\n"
"}");
ASSERT_EQUALS("", errout.str());
// constructor in nested different separate namespace
check("namespace A\n"
"{\n"
" namespace Output\n"
" {\n"
" class Foo\n"
" {\n"
" public:\n"
" Foo();\n"
" private:\n"
" bool mMember;\n"
" };\n"
" }\n"
" namespace Input\n"
" {\n"
" Output::Foo::Foo()\n"
" {\n"
" }\n"
" }\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void uninitVar15() {
check("class Fred\n"
"{\n"
" int a;\n"
"public:\n"
" Fred();\n"
" ~Fred();\n"
"};\n"
"Fred::~Fred()\n"
"{\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void uninitVar16() {
check("struct Foo\n"
"{\n"
" int a;\n"
" void set(int x) { a = x; }\n"
"};\n"
"class Bar\n"
"{\n"
" Foo foo;\n"
"public:\n"
" Bar()\n"
" {\n"
" foo.set(0);\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct Foo\n"
"{\n"
" int a;\n"
" void set(int x) { a = x; }\n"
"};\n"
"class Bar\n"
"{\n"
" Foo foo;\n"
"public:\n"
" Bar()\n"
" {\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:10]: (warning) Member variable 'Bar::foo' is not initialized in the constructor.\n", errout.str());
}
void uninitVar17() {
check("struct Foo\n"
"{\n"
" int a;\n"
"};\n"
"class Bar\n"
"{\n"
" Foo foo[10];\n"
"public:\n"
" Bar()\n"
" {\n"
" foo[0].a = 0;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct Foo\n"
"{\n"
" int a;\n"
"};\n"
"class Bar\n"
"{\n"
" Foo foo[10];\n"
"public:\n"
" Bar()\n"
" {\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:9]: (warning) Member variable 'Bar::foo' is not initialized in the constructor.\n", errout.str());
}
void uninitVar18() { // ticket #2465
check("struct Altren\n"
"{\n"
" explicit Altren(int _a = 0) : value(0) { }\n"
" int value;\n"
"};\n"
"class A\n"
"{\n"
"public:\n"
" A() { }\n"
"private:\n"
" Altren value;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVar19() { // ticket #2792
check("class mystring\n"
"{\n"
" char* m_str;\n"
" int m_len;\n"
"public:\n"
" explicit mystring(const char* str)\n"
" {\n"
" m_len = strlen(str);\n"
" m_str = (char*) malloc(m_len+1);\n"
" memcpy(m_str, str, m_len+1);\n"
" }\n"
" mystring& operator=(const mystring& copy)\n"
" {\n"
" return (*this = copy.m_str);\n"
" }\n"
" ~mystring()\n"
" {\n"
" free(m_str);\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVar20() { // ticket #2867
check("Object::MemFunc() {\n"
" class LocalClass {\n"
" public:\n"
" LocalClass() : dataLength_(0) {}\n"
" std::streamsize dataLength_;\n"
" double bitsInData_;\n"
" } obj;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'LocalClass::bitsInData_' is not initialized in the constructor.\n", errout.str());
check("struct copy_protected;\n"
"Object::MemFunc() {\n"
" class LocalClass : public copy_protected {\n"
" public:\n"
" LocalClass() : copy_protected(1), dataLength_(0) {}\n"
" std::streamsize dataLength_;\n"
" double bitsInData_;\n"
" } obj;\n"
"};");
ASSERT_EQUALS(
"[test.cpp:5]: (warning) Member variable 'LocalClass::bitsInData_' is not initialized in the constructor.\n",
errout.str());
check("struct copy_protected;\n"
"Object::MemFunc() {\n"
" class LocalClass : ::copy_protected {\n"
" public:\n"
" LocalClass() : copy_protected(1), dataLength_(0) {}\n"
" std::streamsize dataLength_;\n"
" double bitsInData_;\n"
" } obj;\n"
"};");
ASSERT_EQUALS(
"[test.cpp:5]: (warning) Member variable 'LocalClass::bitsInData_' is not initialized in the constructor.\n",
errout.str());
}
void uninitVar21() { // ticket #2947
check("class Fred {\n"
"private:\n"
" int a[23];\n"
"public:\n"
" Fred();\n"
"};\n"
"Fred::Fred() {\n"
" a[x::y] = 0;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void uninitVar22() { // ticket #3043
check("class Fred {\n"
" public:\n"
" Fred & operator=(const Fred &);\n"
" virtual Fred & clone(const Fred & other);\n"
" int x;\n"
"};\n"
"Fred & Fred::operator=(const Fred & other) {\n"
" return clone(other);\n"
"}\n"
"Fred & Fred::clone(const Fred & other) {\n"
" x = 0;\n"
" return *this;\n"
"}");
ASSERT_EQUALS("", errout.str());
check("class Fred {\n"
" public:\n"
" Fred & operator=(const Fred &);\n"
" virtual Fred & clone(const Fred & other);\n"
" int x;\n"
"};\n"
"Fred & Fred::operator=(const Fred & other) {\n"
" return clone(other);\n"
"}\n"
"Fred & Fred::clone(const Fred & other) {\n"
" return *this;\n"
"}");
ASSERT_EQUALS("[test.cpp:7]: (warning) Member variable 'Fred::x' is not assigned a value in 'Fred::operator='.\n", errout.str());
}
void uninitVar23() { // ticket #3702
check("class Fred {\n"
" int x;\n"
"public:\n"
" Fred(struct A a, struct B b);\n"
" Fred(C c, struct D d);\n"
" Fred(struct E e, F f);\n"
" Fred(struct G, struct H);\n"
" Fred(I, J);\n"
"};\n"
"Fred::Fred(A a, B b) { }\n"
"Fred::Fred(struct C c, D d) { }\n"
"Fred::Fred(E e, struct F f) { }\n"
"Fred::Fred(G g, H h) { }\n"
"Fred::Fred(struct I i, struct J j) { }");
ASSERT_EQUALS("[test.cpp:10]: (warning) Member variable 'Fred::x' is not initialized in the constructor.\n"
"[test.cpp:11]: (warning) Member variable 'Fred::x' is not initialized in the constructor.\n"
"[test.cpp:12]: (warning) Member variable 'Fred::x' is not initialized in the constructor.\n"
"[test.cpp:13]: (warning) Member variable 'Fred::x' is not initialized in the constructor.\n"
"[test.cpp:14]: (warning) Member variable 'Fred::x' is not initialized in the constructor.\n", errout.str());
}
void uninitVar24() { // ticket #3190
check("class Foo;\n"
"class Bar;\n"
"class Sub;\n"
"class Foo { class Sub; };\n"
"class Bar { class Sub; };\n"
"class Bar::Sub {\n"
" int b;\n"
"public:\n"
" Sub() { }\n"
" Sub(int);\n"
"};\n"
"Bar::Sub::Sub(int) { };\n"
"class ::Foo::Sub {\n"
" int f;\n"
"public:\n"
" ~Sub();\n"
" Sub();\n"
"};\n"
"::Foo::Sub::~Sub() { }\n"
"::Foo::Sub::Sub() { }\n"
"class Foo;\n"
"class Bar;\n"
"class Sub;\n", true);
ASSERT_EQUALS("[test.cpp:9]: (warning, inconclusive) Member variable 'Sub::b' is not initialized in the constructor.\n"
"[test.cpp:12]: (warning) Member variable 'Sub::b' is not initialized in the constructor.\n"
"[test.cpp:20]: (warning) Member variable 'Sub::f' is not initialized in the constructor.\n", errout.str());
}
void uninitVar25() { // ticket #4789
check("struct A {\n"
" int a;\n"
" int b;\n"
" int c;\n"
" A(int x = 0, int y = 0, int z = 0);\n"
"};\n"
"A::A(int x = 0, int y = 0, int z = 0) { }\n"
"struct B {\n"
" int a;\n"
" int b;\n"
" int c;\n"
" B(int x = 0, int y = 0, int z = 0);\n"
"};\n"
"B::B(int x, int y, int z) { }\n"
"struct C {\n"
" int a;\n"
" int b;\n"
" int c;\n"
" C(int, int, int);\n"
"};\n"
"C::C(int x = 0, int y = 0, int z = 0) { }\n"
"struct D {\n"
" int a;\n"
" int b;\n"
" int c;\n"
" D(int, int, int);\n"
"};\n"
"D::D(int x, int y, int z) { }\n"
"struct E {\n"
" int a;\n"
" int b;\n"
" int c;\n"
" E(int x, int y, int z);\n"
"};\n"
"E::E(int, int, int) { }\n"
"struct F {\n"
" int a;\n"
" int b;\n"
" int c;\n"
" F(int x = 0, int y = 0, int z = 0);\n"
"};\n"
"F::F(int, int, int) { }\n", true);
ASSERT_EQUALS("[test.cpp:7]: (warning) Member variable 'A::a' is not initialized in the constructor.\n"
"[test.cpp:7]: (warning) Member variable 'A::b' is not initialized in the constructor.\n"
"[test.cpp:7]: (warning) Member variable 'A::c' is not initialized in the constructor.\n"
"[test.cpp:14]: (warning) Member variable 'B::a' is not initialized in the constructor.\n"
"[test.cpp:14]: (warning) Member variable 'B::b' is not initialized in the constructor.\n"
"[test.cpp:14]: (warning) Member variable 'B::c' is not initialized in the constructor.\n"
"[test.cpp:21]: (warning) Member variable 'C::a' is not initialized in the constructor.\n"
"[test.cpp:21]: (warning) Member variable 'C::b' is not initialized in the constructor.\n"
"[test.cpp:21]: (warning) Member variable 'C::c' is not initialized in the constructor.\n"
"[test.cpp:28]: (warning) Member variable 'D::a' is not initialized in the constructor.\n"
"[test.cpp:28]: (warning) Member variable 'D::b' is not initialized in the constructor.\n"
"[test.cpp:28]: (warning) Member variable 'D::c' is not initialized in the constructor.\n"
"[test.cpp:35]: (warning) Member variable 'E::a' is not initialized in the constructor.\n"
"[test.cpp:35]: (warning) Member variable 'E::b' is not initialized in the constructor.\n"
"[test.cpp:35]: (warning) Member variable 'E::c' is not initialized in the constructor.\n"
"[test.cpp:42]: (warning) Member variable 'F::a' is not initialized in the constructor.\n"
"[test.cpp:42]: (warning) Member variable 'F::b' is not initialized in the constructor.\n"
"[test.cpp:42]: (warning) Member variable 'F::c' is not initialized in the constructor.\n", errout.str());
}
void uninitVar26() {
check("class A {\n"
" int * v;\n"
" int sz;\n"
"public:\n"
" A(int s) {\n"
" v = new int [sz = s];\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVar27() {
check("class A {\n"
" double d;\n"
"public:\n"
" A() {\n"
" rtl::math::setNan(&d);\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class A {\n"
" double d;\n"
"public:\n"
" A() {\n"
" ::rtl::math::setNan(&d);\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVar28() {
check("class Fred {\n"
" int i;\n"
" float f;\n"
"public:\n"
" Fred() {\n"
" foo(1);\n"
" foo(1.0f);\n"
" }\n"
" void foo(int a) { i = a; }\n"
" void foo(float a) { f = a; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVar29() {
check("class A {\n"
" int i;\n"
"public:\n"
" A() { foo(); }\n"
" void foo() const { };\n"
" void foo() { i = 0; }\n"
"};\n"
"class B {\n"
" int i;\n"
"public:\n"
" B() { foo(); }\n"
" void foo() { i = 0; }\n"
" void foo() const { }\n"
"};\n"
"class C {\n"
" int i;\n"
"public:\n"
" C() { foo(); }\n"
" void foo() const { i = 0; }\n"
" void foo() { }\n"
"};\n"
"class D {\n"
" int i;\n"
"public:\n"
" D() { foo(); }\n"
" void foo() { }\n"
" void foo() const { i = 0; }\n"
"};");
ASSERT_EQUALS("[test.cpp:18]: (warning) Member variable 'C::i' is not initialized in the constructor.\n"
"[test.cpp:25]: (warning) Member variable 'D::i' is not initialized in the constructor.\n", errout.str());
}
void uninitVar30() { // ticket #6417
check("namespace NS {\n"
" class MyClass {\n"
" public:\n"
" MyClass();\n"
" ~MyClass();\n"
" private:\n"
" bool SomeVar;\n"
" };\n"
"}\n"
"using namespace NS;\n"
"MyClass::~MyClass() { }\n"
"MyClass::MyClass() : SomeVar(false) { }");
ASSERT_EQUALS("", errout.str());
}
void uninitVar31() { // ticket #8271
check("void bar();\n"
"class MyClass {\n"
"public:\n"
" MyClass();\n"
" void Restart();\n"
"protected:\n"
" int m_retCode;\n"
"};\n"
"MyClass::MyClass() {\n"
" bar(),Restart();\n"
"}\n"
"void MyClass::Restart() {\n"
" m_retCode = 0;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void uninitVar32() { // ticket #8835
check("class Foo {\n"
" friend class Bar;\n"
" int member;\n"
"public:\n"
" Foo()\n"
" {\n"
" if (1) {}\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:5]: (warning) Member variable 'Foo::member' is not initialized in the constructor.\n", errout.str());
check("class Foo {\n"
" friend class Bar;\n"
" int member;\n"
"public:\n"
" Foo()\n"
" {\n"
" while (1) {}\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:5]: (warning) Member variable 'Foo::member' is not initialized in the constructor.\n", errout.str());
check("class Foo {\n"
" friend class Bar;\n"
" int member;\n"
"public:\n"
" Foo()\n"
" {\n"
" for (;;) {}\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:5]: (warning) Member variable 'Foo::member' is not initialized in the constructor.\n", errout.str());
}
void uninitVar33() { // ticket #10295
check("namespace app {\n"
" class B {\n"
" public:\n"
" B(void);\n"
" int x;\n"
" };\n"
"};\n"
"app::B::B(void){}");
ASSERT_EQUALS("[test.cpp:8]: (warning) Member variable 'B::x' is not initialized in the constructor.\n", errout.str());
}
void uninitVar34() { // ticket #10841
check("struct A { void f() {} };\n"
"struct B {\n"
" B() { a->f(); }\n"
" A* a;\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (warning) Member variable 'B::a' is not initialized in the constructor.\n", errout.str());
}
void uninitVarArray1() {
check("class John\n"
"{\n"
"public:\n"
" John() {}\n"
"\n"
"private:\n"
" char name[255];\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'John::name' is not initialized in the constructor.\n", errout.str());
check("class John\n"
"{\n"
"public:\n"
" John() {John::name[0] = '\\0';}\n"
"\n"
"private:\n"
" char name[255];\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class John\n"
"{\n"
"public:\n"
" John() { strcpy(name, \"\"); }\n"
"\n"
"private:\n"
" char name[255];\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class John\n"
"{\n"
"public:\n"
" John() { }\n"
"\n"
" double operator[](const unsigned long i);\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class A;\n"
"class John\n"
"{\n"
"public:\n"
" John() { }\n"
" A a[5];\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class A;\n"
"class John\n"
"{\n"
"public:\n"
" John() { }\n"
" A (*a)[5];\n"
"};");
ASSERT_EQUALS("[test.cpp:5]: (warning) Member variable 'John::a' is not initialized in the constructor.\n", errout.str());
}
void uninitVarArray2() {
check("class John\n"
"{\n"
"public:\n"
" John() { *name = 0; }\n"
"\n"
"private:\n"
" char name[255];\n"
"};");
ASSERT_EQUALS("", errout.str());
// #5754
check("class John\n"
"{\n"
"public:\n"
" John() {*this->name = '\\0';}\n"
"\n"
"private:\n"
" char name[255];\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVarArray3() {
check("class John\n"
"{\n"
"private:\n"
" int a[100];\n"
" int b[100];\n"
"\n"
"public:\n"
" John()\n"
" {\n"
" memset(a,0,sizeof(a));\n"
" memset(b,0,sizeof(b));\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVarArray4() {
check("class John\n"
"{\n"
"private:\n"
" int a[100];\n"
" int b[100];\n"
"\n"
"public:\n"
" John()\n"
" {\n"
" if (snprintf(a,10,\"a\")) { }\n"
" if (snprintf(b,10,\"b\")) { }\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVarArray5() {
check("class Foo\n"
"{\n"
"private:\n"
" Bar bars[10];\n"
"public:\n"
" Foo()\n"
" { }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVarArray6() {
check("class Foo\n"
"{\n"
"public:\n"
" Foo();\n"
" static const char STR[];\n"
"};\n"
"const char Foo::STR[] = \"abc\";\n"
"Foo::Foo() { }");
ASSERT_EQUALS("", errout.str());
}
void uninitVarArray7() {
check("class Foo\n"
"{\n"
" int array[10];\n"
"public:\n"
" Foo() { }\n"
"};");
ASSERT_EQUALS("[test.cpp:5]: (warning) Member variable 'Foo::array' is not initialized in the constructor.\n", errout.str());
check("class Foo\n"
"{\n"
" int array[10];\n"
"public:\n"
" Foo() { memset(array, 0, sizeof(array)); }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class Foo\n"
"{\n"
" int array[10];\n"
"public:\n"
" Foo() { ::memset(array, 0, sizeof(array)); }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVarArray8() {
check("class Foo {\n"
" char a[10];\n"
"public:\n"
" Foo() { ::ZeroMemory(a); }\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void uninitVarArray9() { // #6957
check("class BaseGDL;\n"
"struct IxExprListT {\n"
"private:\n"
" BaseGDL* eArr[3];\n"
"public:\n"
" IxExprListT() {}\n"
"};");
ASSERT_EQUALS("[test.cpp:6]: (warning) Member variable 'IxExprListT::eArr' is not initialized in the constructor.\n", errout.str());
check("struct sRAIUnitDefBL {\n"
" sRAIUnitDefBL();\n"
" ~sRAIUnitDefBL();\n"
"};\n"
"struct sRAIUnitDef {\n"
" sRAIUnitDef() {}\n"
" sRAIUnitDefBL *List[35];\n"
"};");
ASSERT_EQUALS("[test.cpp:6]: (warning) Member variable 'sRAIUnitDef::List' is not initialized in the constructor.\n", errout.str());
}
void uninitVarArray2D() {
check("class John\n"
"{\n"
"public:\n"
" John() { a[0][0] = 0; }\n"
"\n"
"private:\n"
" char a[2][2];\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVarArray3D() {
check("class John\n"
"{\n"
"private:\n"
" char a[2][2][2];\n"
"public:\n"
" John() { a[0][0][0] = 0; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVarCpp11Init1() {
check("class Foo {\n"
" std::vector<std::string> bar;\n"
"public:\n"
" Foo()\n"
" : bar({\"a\", \"b\"})\n"
" {}\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVarCpp11Init2() {
check("class Fred {\n"
" struct Foo {\n"
" int a;\n"
" bool b;\n"
" };\n"
" Foo f;\n"
" float g;\n"
"public:\n"
" Fred() : f{0, true} { }\n"
" float get() const;\n"
"};\n"
"float Fred::get() const { return g; }");
ASSERT_EQUALS("[test.cpp:9]: (warning) Member variable 'Fred::g' is not initialized in the constructor.\n", errout.str());
}
void uninitVarStruct1() { // ticket #2172
check("class A\n"
"{\n"
"private:\n"
" struct B {\n"
" std::string str1;\n"
" std::string str2;\n"
" }\n"
" struct B b;\n"
"public:\n"
" A() {\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class A\n"
"{\n"
"private:\n"
" struct B {\n"
" char *str1;\n"
" char *str2;\n"
" }\n"
" struct B b;\n"
"public:\n"
" A() {\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:10]: (warning) Member variable 'A::b' is not initialized in the constructor.\n", errout.str());
check("class A\n"
"{\n"
"private:\n"
" struct B {\n"
" char *str1;\n"
" char *str2;\n"
" B() : str1(NULL), str2(NULL) { }\n"
" }\n"
" struct B b;\n"
"public:\n"
" A() {\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVarStruct2() { // ticket #838
check("struct POINT\n"
"{\n"
" int x;\n"
" int y;\n"
"};\n"
"class Fred\n"
"{\n"
"private:\n"
" POINT p;\n"
"public:\n"
" Fred()\n"
" { }\n"
"};");
ASSERT_EQUALS("[test.cpp:11]: (warning) Member variable 'Fred::p' is not initialized in the constructor.\n", errout.str());
check("struct POINT\n"
"{\n"
" int x;\n"
" int y;\n"
" POINT();\n"
"};\n"
"class Fred\n"
"{\n"
"private:\n"
" POINT p;\n"
"public:\n"
" Fred()\n"
" { }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct POINT\n"
"{\n"
" int x;\n"
" int y;\n"
" POINT() :x(0), y(0) { }\n"
"};\n"
"class Fred\n"
"{\n"
"private:\n"
" POINT p;\n"
"public:\n"
" Fred()\n"
" { }\n"
"};");
ASSERT_EQUALS("", errout.str());
// non static data-member initialization
check("struct POINT\n"
"{\n"
" int x=0;\n"
" int y=0;\n"
"};\n"
"class Fred\n"
"{\n"
"private:\n"
" POINT p;\n"
"public:\n"
" Fred()\n"
" { }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVarUnion1() {
check("class Fred\n" // ticket #3196
"{\n"
"private:\n"
" union { int a; int b; };\n"
"public:\n"
" Fred()\n"
" { a = 0; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class Fred {\n"
"private:\n"
" union { int a{}; int b; };\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVarUnion2() {
// If the "data_type" is 0 it means union member "data" is invalid.
// So it's ok to not initialize "data".
// related forum: http://sourceforge.net/apps/phpbb/cppcheck/viewtopic.php?f=3&p=1806
check("union Data { int id; int *ptr; };\n"
"\n"
"class Fred {\n"
"private:\n"
" int data_type;\n"
" Data data;\n"
"public:\n"
" Fred() : data_type(0)\n"
" { }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitMissingFuncDef() {
// Unknown member function
check("class Fred\n"
"{\n"
"public:\n"
" Fred() { Init(); }\n"
"private:\n"
" void Init();"
" int i;\n"
"};");
ASSERT_EQUALS("", errout.str());
// Unknown non-member function (friend class)
check("class Fred\n"
"{\n"
"public:\n"
" Fred() { Init(); }\n"
"private:\n"
" friend ABC;\n"
" int i;\n"
"};");
ASSERT_EQUALS("", errout.str());
// Unknown non-member function (is Init a virtual function?)
check("class Fred : private ABC\n"
"{\n"
"public:\n"
" Fred() { Init(); }\n"
"private:\n"
" int i;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'Fred::i' is not initialized in the constructor.\n", errout.str());
// Unknown non-member function
check("class Fred\n"
"{\n"
"public:\n"
" Fred() { Init(); }\n"
"private:\n"
" int i;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'Fred::i' is not initialized in the constructor.\n", errout.str());
// Unknown non-member function
check("class ABC { };\n"
"class Fred : private ABC\n"
"{\n"
"public:\n"
" Fred() { Init(); }\n"
"private:\n"
" int i;\n"
"};");
ASSERT_EQUALS("[test.cpp:5]: (warning) Member variable 'Fred::i' is not initialized in the constructor.\n", errout.str());
// Unknown member functions and unknown static functions
check("class ABC {\n"
" static void static_base_func();\n"
" void const_base_func() const;\n"
"};\n"
"class Fred : private ABC {\n"
"public:\n"
" Fred() {\n"
" const_func();\n"
" static_func();\n"
" const_base_func();\n"
" ABC::static_base_func();\n"
" }\n"
" void const_func() const;\n"
" static void static_f();\n"
"private:\n"
" int i;\n"
"};");
// Unknown overloaded member functions
check("class Fred : private ABC {\n"
"public:\n"
" Fred() {\n"
" func();\n"
" }\n"
" void func() const;\n"
" void func();\n"
"private:\n"
" int i;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVarEnum1() {
check("class Fred\n"
"{\n"
"public:\n"
" enum abc {a,b,c};\n"
" Fred() {}\n"
"private:\n"
" unsigned int i;\n"
"};");
ASSERT_EQUALS("[test.cpp:5]: (warning) Member variable 'Fred::i' is not initialized in the constructor.\n", errout.str());
}
void uninitVarEnum2() { // ticket #8146
check("enum E { E1 };\n"
"struct X { E e = E1; };\n"
"struct Y {\n"
" Y() {}\n"
" X x;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVarStream() {
check("class Foo\n"
"{\n"
"private:\n"
" int foo;\n"
"public:\n"
" explicit Foo(std::istream &in)\n"
" {\n"
" if(!(in >> foo))\n"
" throw 0;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVarTypedef() {
check("class Foo\n"
"{\n"
"public:\n"
" typedef int * pointer;\n"
" Foo() : a(0) {}\n"
" pointer a;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVarMemset() {
check("class Foo\n"
"{\n"
"public:\n"
" int * pointer;\n"
" Foo() { memset(this, 0, sizeof(*this)); }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class Foo\n"
"{\n"
"public:\n"
" int * pointer;\n"
" Foo() { ::memset(this, 0, sizeof(*this)); }\n"
"};");
ASSERT_EQUALS("", errout.str());
// Ticket #7068
check("struct Foo {\n"
" int * p;\n"
" char c;\n"
" Foo() { memset(p, 0, sizeof(int)); }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'Foo::c' is not initialized in the constructor.\n", errout.str());
check("struct Foo {\n"
" int i;\n"
" char c;\n"
" Foo() { memset(&i, 0, sizeof(int)); }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'Foo::c' is not initialized in the constructor.\n", errout.str());
check("struct Foo { int f; };\n"
"struct Bar { int b; };\n"
"struct FooBar {\n"
" FooBar() {\n"
" memset(&foo, 0, sizeof(foo));\n"
" }\n"
" Foo foo;\n"
" Bar bar;\n"
"};\n"
"int main() {\n"
" FooBar foobar;\n"
" return foobar.foo.f + foobar.bar.b;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'FooBar::bar' is not initialized in the constructor.\n", errout.str());
check("struct Foo { int f; };\n"
"struct Bar { int b; };\n"
"struct FooBar {\n"
" FooBar() {\n"
" memset(&this->foo, 0, sizeof(this->foo));\n"
" }\n"
" Foo foo;\n"
" Bar bar;\n"
"};\n"
"int main() {\n"
" FooBar foobar;\n"
" return foobar.foo.f + foobar.bar.b;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'FooBar::bar' is not initialized in the constructor.\n", errout.str());
// #7755
check("struct A {\n"
" A() {\n"
" memset(this->data, 0, 42);\n"
" }\n"
" char data[42];\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void privateCtor1() {
settings.standards.cpp = Standards::CPP03;
check("class Foo {\n"
" int foo;\n"
" Foo() { }\n"
"};");
ASSERT_EQUALS("", errout.str());
settings.standards.cpp = Standards::CPP11;
check("class Foo {\n"
" int foo;\n"
" Foo() { }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (warning) Member variable 'Foo::foo' is not initialized in the constructor.\n", errout.str());
}
void privateCtor2() {
check("class Foo\n"
"{\n"
"private:\n"
" int foo;\n"
" Foo() { }\n"
"public:\n"
" explicit Foo(int _i) { }\n"
"};");
ASSERT_EQUALS("[test.cpp:7]: (warning) Member variable 'Foo::foo' is not initialized in the constructor.\n", errout.str());
}
void function() {
check("class A\n"
"{\n"
"public:\n"
" A();\n"
" int* f(int*);\n"
"};\n"
"\n"
"A::A()\n"
"{\n"
"}\n"
"\n"
"int* A::f(int* p)\n"
"{\n"
" return p;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
// Borland C++: No FP for published pointers - they are automatically initialized
void uninitVarPublished() {
check("class Fred\n"
"{\n"
"__published:\n"
" int *i;\n"
"public:\n"
" Fred() { }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitVarInheritClassInit() {
Settings s;
s.libraries.emplace_back("vcl");
check("class Fred: public TObject\n"
"{\n"
"public:\n"
" Fred() { }\n"
"private:\n"
" int x;\n"
"};", s);
ASSERT_EQUALS("", errout.str());
}
void uninitOperator() {
check("class Fred\n"
"{\n"
"public:\n"
" Fred() { }\n"
" int *operator [] (int index) { return 0; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitFunction1() {
check("class Fred\n"
"{\n"
"public:\n"
" Fred() { init(*this); }\n"
"\n"
" static void init(Fred &f)\n"
" { f.d = 0; }\n"
"\n"
" double d;\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class Fred\n"
"{\n"
"public:\n"
" Fred() { init(*this); }\n"
"\n"
" static void init(Fred &f)\n"
" { }\n"
"\n"
" double d;\n"
"};");
TODO_ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'Fred::d' is not initialized in the constructor.\n", "", errout.str());
}
void uninitFunction2() {
check("class Fred\n"
"{\n"
"public:\n"
" Fred() { if (!init(*this)); }\n"
"\n"
" static bool init(Fred &f)\n"
" { f.d = 0; return true; }\n"
"\n"
" double d;\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class Fred\n"
"{\n"
"public:\n"
" Fred() { if (!init(*this)); }\n"
"\n"
" static bool init(Fred &f)\n"
" { return true; }\n"
"\n"
" double d;\n"
"};");
TODO_ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'Fred::d' is not initialized in the constructor.\n", "", errout.str());
}
void uninitFunction3() {
check("class Fred\n"
"{\n"
"public:\n"
" Fred() { if (!init()); }\n"
"\n"
" bool init()\n"
" { d = 0; return true; }\n"
"\n"
" double d;\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class Fred\n"
"{\n"
"public:\n"
" Fred() { if (!init()); }\n"
"\n"
" bool init()\n"
" { return true; }\n"
"\n"
" double d;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'Fred::d' is not initialized in the constructor.\n", errout.str());
}
void uninitFunction4() {
check("class Fred\n"
"{\n"
"public:\n"
" Fred() { init(this); }\n"
"\n"
" init(Fred *f)\n"
" { f.d = 0; }\n"
"\n"
" double d;\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class Fred\n"
"{\n"
"public:\n"
" Fred() { init(this); }\n"
"\n"
" init(Fred *f)\n"
" { }\n"
"\n"
" double d;\n"
"};");
TODO_ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'Fred::d' is not initialized in the constructor.\n", "", errout.str());
}
void uninitFunction5() { // #4072 - FP about struct that is initialized in function
check("struct Structure {\n"
" int C;\n"
"};\n"
"\n"
"class A {\n"
" Structure B;\n"
"public:\n"
" A() { Init( B ); };\n"
" void Init( Structure& S ) { S.C = 0; };\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct Structure {\n"
" int C;\n"
"};\n"
"\n"
"class A {\n"
" Structure B;\n"
"public:\n"
" A() { Init( B ); };\n"
" void Init(const Structure& S) { }\n"
"};");
ASSERT_EQUALS("[test.cpp:8]: (warning) Member variable 'A::B' is not initialized in the constructor.\n", errout.str());
}
void uninitSameClassName() {
check("class B\n"
"{\n"
"public:\n"
" B();\n"
" int j;\n"
"};\n"
"\n"
"class A\n"
"{\n"
" class B\n"
" {\n"
" public:\n"
" B();\n"
" int i;\n"
" };\n"
"};\n"
"\n"
"A::B::B()\n"
"{\n"
" i = 0;\n"
"}");
ASSERT_EQUALS("", errout.str());
check("class B\n"
"{\n"
"public:\n"
" B();\n"
" int j;\n"
"};\n"
"\n"
"class A\n"
"{\n"
" class B\n"
" {\n"
" public:\n"
" B();\n"
" int i;\n"
" };\n"
"};\n"
"\n"
"B::B()\n"
"{\n"
"}\n"
"\n"
"A::B::B()\n"
"{\n"
"}");
ASSERT_EQUALS("[test.cpp:18]: (warning) Member variable 'B::j' is not initialized in the constructor.\n"
"[test.cpp:22]: (warning) Member variable 'B::i' is not initialized in the constructor.\n", errout.str());
// Ticket #1700
check("namespace n1\n"
"{\n"
"class Foo {"
"public:\n"
" Foo() : i(0) { }\n"
"private:\n"
" int i;\n"
"};\n"
"}\n"
"\n"
"namespace n2\n"
"{\n"
"class Foo {"
"public:\n"
" Foo() { }\n"
"};\n"
"}");
ASSERT_EQUALS("", errout.str());
check("namespace n1\n"
"{\n"
"class Foo {\n"
"public:\n"
" Foo();\n"
"private:\n"
" int i;\n"
"};\n"
"}\n"
"\n"
"n1::Foo::Foo()\n"
"{ }\n"
"\n"
"namespace n2\n"
"{\n"
"class Foo {\n"
"public:\n"
" Foo() { }\n"
"};\n"
"}");
ASSERT_EQUALS("[test.cpp:11]: (warning) Member variable 'Foo::i' is not initialized in the constructor.\n", errout.str());
check("namespace n1\n"
"{\n"
"class Foo {"
"public:\n"
" Foo();\n"
"private:\n"
" int i;\n"
"};\n"
"}\n"
"\n"
"n1::Foo::Foo() : i(0)\n"
"{ }\n"
"\n"
"namespace n2\n"
"{\n"
"class Foo {"
"public:\n"
" Foo() { }\n"
"};\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void uninitFunctionOverload() {
// Ticket #1783 - overloaded "init" functions
check("class A\n"
"{\n"
"private:\n"
" int i;\n"
"\n"
"public:\n"
" A()\n"
" {\n"
" init();\n"
" }\n"
"\n"
" void init() { init(0); }\n"
"\n"
" void init(int value)\n"
" { i = value; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("class A\n"
"{\n"
"private:\n"
" int i;\n"
"\n"
"public:\n"
" A()\n"
" {\n"
" init();\n"
" }\n"
"\n"
" void init() { init(0); }\n"
"\n"
" void init(int value)\n"
" { }\n"
"};");
ASSERT_EQUALS("[test.cpp:7]: (warning) Member variable 'A::i' is not initialized in the constructor.\n", errout.str());
check("class bar {\n" // #9887
" int length;\n"
" bar() { length = 0; }\n"
"};\n"
"class foo {\n"
" int x;\n"
" foo() { Set(bar()); }\n"
" void Set(int num) { x = 1; }\n"
" void Set(bar num) { x = num.length; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void uninitVarOperatorEqual() { // ticket #2415
check("struct A {\n"
" int a;\n"
" A() { a=0; }\n"
" A(A const &a) { operator=(a); }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct A {\n"
" int a;\n"
" A() { a=0; }\n"
" A(A const &a) { operator=(a); }\n"
" A & operator = (const A & rhs) {\n"
" a = rhs.a;\n"
" return *this;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct A {\n"
" int a;\n"
" A() { a=0; }\n"
" A(A const &a) { operator=(a); }\n"
" A & operator = (const A & rhs) {\n"
" return *this;\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'A::a' is not initialized in the copy constructor.\n"
"[test.cpp:5]: (warning) Member variable 'A::a' is not assigned a value in 'A::operator='.\n", errout.str());
}
void uninitVarPointer() { // #3801
check("struct A {\n"
" int a;\n"
"};\n"
"struct B {\n"
" A* a;\n"
" B() { }\n"
"};");
ASSERT_EQUALS("[test.cpp:6]: (warning) Member variable 'B::a' is not initialized in the constructor.\n", errout.str());
check("struct A;\n"
"struct B {\n"
" A* a;\n"
" B() { }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'B::a' is not initialized in the constructor.\n", errout.str());
check("struct A;\n"
"struct B {\n"
" const A* a;\n"
" B() { }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'B::a' is not initialized in the constructor.\n", errout.str());
check("struct A;\n"
"struct B {\n"
" A* const a;\n"
" B() { }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'B::a' is not initialized in the constructor.\n", errout.str());
check("class Test {\n" // #8498
"public:\n"
" Test() {}\n"
" std::map<int, int>* pMap = nullptr;\n"
" std::string* pStr = nullptr;\n"
"};\n");
ASSERT_EQUALS("", errout.str());
check("template <typename U>\n"
"class C1 {}; \n"
"template <typename U, typename V>\n"
"class C2 {};\n"
"namespace A {\n"
" template <typename U>\n"
" class D1 {};\n"
" template <typename U, typename V>\n"
" class D2 {};\n"
"}\n"
"class Test {\n"
"public:\n"
" Test() {}\n"
" C1<int>* c1 = nullptr;\n"
" C2<int, int >* c2 = nullptr;\n"
" A::D1<int>* d1 = nullptr;\n"
" A::D2<int, int >* d2 = nullptr;\n"
" std::map<int, int>* pMap = nullptr;\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void uninitConstVar() {
check("struct A;\n"
"struct B {\n"
" A* const a;\n"
" B() { }\n"
" B(B& b) { }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (warning) Member variable 'B::a' is not initialized in the constructor.\n"
"[test.cpp:5]: (warning) Member variable 'B::a' is not initialized in the copy constructor.\n", errout.str());
check("struct A;\n"
"struct B {\n"
" A* const a;\n"
" B& operator=(const B& r) { }\n"
"};");
ASSERT_EQUALS("", errout.str()); // #3804
check("struct B {\n"
" const int a;\n"
" B() { }\n"
" B(B& b) { }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (warning) Member variable 'B::a' is not initialized in the constructor.\n"
"[test.cpp:4]: (warning) Member variable 'B::a' is not initialized in the copy constructor.\n", errout.str());
check("struct B {\n"
" const int a;\n"
" B& operator=(const B& r) { }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
// Ticket #5641 "Regression. Crash for 'C() _STLP_NOTHROW {}'"
void constructors_crash1() {
check("class C {\n"
"public:\n"
" C() _STLP_NOTHROW {}\n"
" C(const C&) _STLP_NOTHROW {}\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void classWithOperatorInName() { // ticket #2827
check("class operatorX {\n"
" int mValue;\n"
"public:\n"
" operatorX() : mValue(0) {}\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void templateConstructor() { // ticket #7942
check("template <class T> struct Container {\n"
" Container();\n"
" T* mElements;\n"
"};\n"
"template <class T> Container<T>::Container() : mElements(nullptr) {}\n"
"Container<int> intContainer;");
ASSERT_EQUALS("", errout.str());
}
void typedefArray() { // ticket #5766
check("typedef float rvec[3];\n"
"class SelectionPosition {\n"
"public:\n"
" SelectionPosition() {}\n"
" const rvec &x() const;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitAssignmentWithOperator() {
check("struct C {\n"
" int x;\n"
" C() {\n"
" bool b = false;\n"
" b = b && SetValue();\n"
" }\n"
" bool SetValue() {\n"
" x = 1;\n"
" return true;\n"
" }\n"
"};", true);
TODO_ASSERT_EQUALS("[test.cpp:3]: (warning, inconclusive) Member variable 'C::x' is not initialized in the constructor.\n",
"[test.cpp:3]: (warning) Member variable 'C::x' is not initialized in the constructor.\n", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" bool b = false;\n"
" b = true || SetValue();\n"
" }\n"
" bool SetValue() {\n"
" x = 1;\n"
" return true;\n"
" }\n"
"};", true);
TODO_ASSERT_EQUALS("[test.cpp:3]: (warning, inconclusive) Member variable 'C::x' is not initialized in the constructor.\n",
"[test.cpp:3]: (warning) Member variable 'C::x' is not initialized in the constructor.\n", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" bool b = true;\n"
" b = b & SetValue();\n"
" }\n"
" bool SetValue() {\n"
" x = 1;\n"
" return true;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" bool b = false;\n"
" b = true | SetValue();\n"
" }\n"
" bool SetValue() {\n"
" x = 1;\n"
" return true;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" int i = 0;\n"
" i = i * SetValue();\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" int i = 0;\n"
" i = i / SetValue();\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" int i = 0;\n"
" i = i % SetValue();\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" int i = 0;\n"
" i = i + SetValue();\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" int i = 0;\n"
" i = i - SetValue();\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" int i = 0;\n"
" i = i << SetValue();\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" int i = 0;\n"
" i = i >> SetValue();\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" int i = 0;\n"
" i = i ^ SetValue();\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitCompoundAssignment() {
check("struct C {\n"
" int x;\n"
" C() {\n"
" bool b = true;\n"
" b &= SetValue();\n"
" }\n"
" bool SetValue() {\n"
" x = 1;\n"
" return true;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" bool b = false;\n"
" b |= SetValue();\n"
" }\n"
" bool SetValue() {\n"
" x = 1;\n"
" return true;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" int i = 0;\n"
" i *= SetValue();\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" int i = 0;\n"
" i /= SetValue();\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" int i = 0;\n"
" i %= SetValue();\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" int i = 0;\n"
" i += SetValue();\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" int i = 0;\n"
" i -= SetValue();\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" int i = 0;\n"
" i <<= SetValue();\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" int i = 0;\n"
" i >>= SetValue();\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" int i = 0;\n"
" i ^= SetValue();\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitComparisonAssignment() {
check("struct C {\n"
" int x;\n"
" C() {\n"
" bool b = true;\n"
" b = (true == SetValue());\n"
" }\n"
" bool SetValue() {\n"
" x = 1;\n"
" return true;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" bool b = false;\n"
" b |= (true != SetValue());\n"
" }\n"
" bool SetValue() {\n"
" x = 1;\n"
" return true;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" bool b = (0 < SetValue());\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" bool b = (0 <= SetValue());\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" bool b = (0 > SetValue());\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
check("struct C {\n"
" int x;\n"
" C() {\n"
" bool b = (0 >= SetValue());\n"
" }\n"
" int SetValue() { return x = 1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void uninitTemplate1() {
check("template <class A, class T> class C;\n"
"template <class A>\n"
"class C<A, void> {\n"
" public:\n"
" C() : b(0) { }\n"
" C(A* a) : b(a) { }\n"
" private:\n"
" A* b;\n"
"};\n"
"template <class A, class T>\n"
"class C {\n"
" private:\n"
" A* b;\n"
"};");
ASSERT_EQUALS("", errout.str());
check("template<class T> class A{};\n"
"template<class T1, class T2> class B{};\n"
"template<class T1, class T2>\n"
"class A<B<T1, T2>> {\n"
" public:\n"
" A();\n"
" bool m_value;\n"
"};\n"
"template<class T1, class T2>\n"
"A<B<T1, T2>>::A() : m_value(false) {}");
ASSERT_EQUALS("", errout.str());
check("template <typename T> struct S;\n" // #11177
"template <> struct S<void> final {\n"
" explicit S(int& i);\n"
" int& m;\n"
"};\n"
"S<void>::S(int& i) : m(i) {}\n");
ASSERT_EQUALS("", errout.str());
}
void unknownTemplateType() {
check("template <typename T> class A {\n"
"private:\n"
" T m;\n"
"public:\n"
" A& operator=() { return *this; }\n"
"};\n"
"A<decltype(SOMETHING)> a;");
ASSERT_EQUALS("", errout.str());
}
};
REGISTER_TEST(TestConstructors)
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