cppcheck/test/testexceptionsafety.cpp

97 lines
2.6 KiB
C++

/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2011 Daniel Marjamäki and Cppcheck team.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "tokenize.h"
#include "checkexceptionsafety.h"
#include "testsuite.h"
#include <sstream>
extern std::ostringstream errout;
class TestExceptionSafety : public TestFixture
{
public:
TestExceptionSafety() : TestFixture("TestExceptionSafety")
{ }
private:
void run()
{
TEST_CASE(destructors);
TEST_CASE(deallocThrow1);
TEST_CASE(deallocThrow2);
}
void check(const std::string &code)
{
// Clear the error buffer..
errout.str("");
Settings settings;
settings.addEnabled("all");
// Tokenize..
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code.c_str());
tokenizer.tokenize(istr, "test.cpp");
tokenizer.simplifyTokenList();
// Check char variable usage..
CheckExceptionSafety checkExceptionSafety(&tokenizer, &settings, this);
checkExceptionSafety.runSimplifiedChecks(&tokenizer, &settings, this);
}
void destructors()
{
check("x::~x()\n"
"{\n"
" throw e;\n"
"}\n");
ASSERT_EQUALS("[test.cpp:3]: (error) Throwing exception in destructor\n", errout.str());
}
void deallocThrow1()
{
check("int * p;\n"
"void f(int x)\n"
"{\n"
" delete p;\n"
" if (x)\n"
" throw 123;\n"
" p = 0;\n"
"}\n");
ASSERT_EQUALS("[test.cpp:6]: (error) Throwing exception in invalid state, p points at deallocated memory\n", errout.str());
}
void deallocThrow2()
{
check("void f() {\n"
" int* p = 0;\n"
" delete p;\n"
" throw 1;\n"
" p = new int;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
};
REGISTER_TEST(TestExceptionSafety)