/* * cppcheck - c/c++ syntax checking * Copyright (C) 2007-2008 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam * * 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 extern std::ostringstream errout; class TestConstructors : public TestFixture { public: TestConstructors() : TestFixture("TestConstructors") { } private: void check( const char code[] ) { // Tokenize.. Tokenizer tokenizer; std::istringstream istr(code); tokenizer.tokenize( istr, "test.cpp" ); tokenizer.simplifyTokenList(); // Clear the error buffer.. errout.str(""); // Check class constructors.. Settings settings; settings._checkCodingStyle = true; CheckClass checkClass( &tokenizer, settings, this ); checkClass.CheckConstructors(); } void run() { TEST_CASE( simple1 ); TEST_CASE( simple2 ); TEST_CASE( simple3 ); TEST_CASE( simple4 ); 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_same_classname ); // BUG 2208157 TEST_CASE( initvar_chained_assign ); // BUG 2270433 TEST_CASE( initvar_2constructors ); // BUG 2270353 TEST_CASE( initvar_private_constructor ); // BUG 2354171 - private constructor TEST_CASE( initvar_destructor ); // No variables need to be initialized in a destructor } void simple1() { check( "class Fred\n" "{\n" "public:\n" " int i;\n" "};\n" ); std::string actual( errout.str() ); std::string expected( "[test.cpp:1] The class 'Fred' has no constructor\n" ); ASSERT_EQUALS( expected, actual ); } void simple2() { check( "class Fred\n" "{\n" "public:\n" " Fred() { }\n" " int i;\n" "};\n" ); ASSERT_EQUALS( std::string("[test.cpp:4] Uninitialized member variable 'Fred::i'\n"), errout.str() ); } void simple3() { check( "class Fred\n" "{\n" "public:\n" " Fred();\n" " int i;\n" "};\n" "Fred::Fred()\n" "{ }\n" ); ASSERT_EQUALS( std::string("[test.cpp:7] Uninitialized member variable 'Fred::i'\n"), errout.str() ); } void simple4() { check( "class Fred\n" "{\n" "public:\n" " Fred();\n" " Fred(int _i);\n" " int i;\n" "};\n" "Fred::Fred()\n" "{ }\n" "Fred::Fred(int _i)\n" "{\n" " i = _i;\n" "}\n" ); ASSERT_EQUALS( std::string("[test.cpp:8] Uninitialized member variable 'Fred::i'\n"), errout.str() ); } void initvar_with_this() { check( "class Fred\n" "{\n" "public:\n" " Fred()\n" " { this->i = 0; }\n" " int i;\n" "};\n" ); ASSERT_EQUALS( std::string(""), errout.str() ); } void initvar_if() { check( "class Fred\n" "{\n" "public:\n" " Fred()\n" " {\n" " if (true)\n" " i = 0;\n" " else\n" " i = 1;\n" " }\n" " int i;\n" "};\n" ); ASSERT_EQUALS( std::string(""), errout.str() ); } void initvar_operator_eq1() { // Bug 2190376 - False positive, Uninitialized member variable with operator= check( "class Fred\n" "{\n" "private:\n" " int i;\n" "\n" "public:\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" "};\n" ); std::string err( errout.str() ); ASSERT_EQUALS( std::string(""), err ); } void initvar_operator_eq2() { check( "class Fred\n" "{\n" "public:\n" " Fred() { i = 0; }\n" " void operator=() { }\n" " int i;\n" "};\n" ); ASSERT_EQUALS( std::string("[test.cpp:5] Uninitialized member variable 'Fred::i'\n"), errout.str() ); } void initvar_operator_eq3() { check( "class Fred\n" "{\n" "public:\n" " Fred() { Init(); }\n" " void operator=() { Init(); }\n" "private:\n" " Init() { i = 0; }\n" " int i;\n" "};\n" ); ASSERT_EQUALS( std::string(""), 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" "}\n" ); std::string err( errout.str() ); ASSERT_EQUALS( std::string(""), err ); } void initvar_chained_assign() { // Bug 2270433 - Uninitialized variable false positive on chained assigns check( "class 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" "}\n" ); std::string err( errout.str() ); ASSERT_EQUALS( std::string(""), err ); } void initvar_2constructors() { check( "class c\n" "{\n" " c();\n" " 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" "}\n" ); std::string err( errout.str() ); ASSERT_EQUALS( std::string(""), err ); } void initvar_private_constructor() { check( "class Fred\n" "{\n" "private:\n" " int var;\n" " Fred();\n" "};\n" "Fred::Fred()\n" "{ }" ); ASSERT_EQUALS( std::string(""), errout.str() ); } void initvar_destructor() { check( "class Fred\n" "{\n" "private:\n" " int var;\n" "public:\n" " Fred() : var(0) {}\n" " ~Fred() {}\n" "};\n" ); ASSERT_EQUALS( std::string(""), errout.str() ); } }; REGISTER_TEST( TestConstructors )