121 lines
3.2 KiB
C++
121 lines
3.2 KiB
C++
/*
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* cppcheck - c/c++ syntax checking
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* Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/
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*/
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#include "../src/tokenize.h"
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#include "../src/checkother.h"
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#include "testsuite.h"
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#include <sstream>
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extern std::ostringstream errout;
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class TestOther : public TestFixture
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{
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public:
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TestOther() : TestFixture("TestOther")
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{ }
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private:
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void run()
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{
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TEST_CASE(delete1);
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TEST_CASE(delete2);
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TEST_CASE(sprintf1); // Dangerous usage of sprintf
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}
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void check(const char code[])
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{
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// Tokenize..
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Tokenizer tokenizer;
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std::istringstream istr(code);
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tokenizer.tokenize(istr, "test.cpp");
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// Clear the error buffer..
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errout.str("");
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// Check for redundant code..
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CheckOther checkOther(&tokenizer, this);
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checkOther.WarningRedundantCode();
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}
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void delete1()
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{
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check("void foo()\n"
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"{\n"
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" if (p)\n"
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" {\n"
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" delete p;\n"
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" p = 0;\n"
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" }\n"
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"}\n");
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ASSERT_EQUALS(std::string(""), errout.str());
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}
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void delete2()
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{
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check("void foo()\n"
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"{\n"
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" if (p)\n"
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" {\n"
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" delete p;\n"
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" }\n"
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"}\n");
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ASSERT_EQUALS(std::string("[test.cpp:3]: Redundant condition. It is safe to deallocate a NULL pointer\n"), errout.str());
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check("void foo()\n"
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"{\n"
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" if (p)\n"
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" delete p;\n"
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"}\n");
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ASSERT_EQUALS(std::string("[test.cpp:3]: Redundant condition. It is safe to deallocate a NULL pointer\n"), errout.str());
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}
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void sprintfUsage(const char code[])
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{
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// Tokenize..
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Tokenizer tokenizer;
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std::istringstream istr(code);
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tokenizer.tokenize(istr, "test.cpp");
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tokenizer.setVarId();
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// Clear the error buffer..
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errout.str("");
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// Check for redundant code..
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CheckOther checkOther(&tokenizer, this);
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checkOther.InvalidFunctionUsage();
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}
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void sprintf1()
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{
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sprintfUsage( "void foo()\n"
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"{\n"
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" char buf[100];\n"
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" sprintf(buf,\"%s\",buf);\n"
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"}\n");
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ASSERT_EQUALS(std::string("[test.cpp:4]: Overlapping data buffer buf\n"), errout.str());
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}
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};
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REGISTER_TEST(TestOther)
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