185 lines
4.7 KiB
C++
185 lines
4.7 KiB
C++
/*
|
|
* Cppcheck - A tool for static C/C++ code analysis
|
|
* Copyright (C) 2007-2009 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/>.
|
|
*/
|
|
|
|
|
|
|
|
// Check for unused variables..
|
|
|
|
#include "testsuite.h"
|
|
#include "../src/tokenize.h"
|
|
#include "../src/checkother.h"
|
|
|
|
#include <sstream>
|
|
extern std::ostringstream errout;
|
|
|
|
class TestUnusedVar : public TestFixture
|
|
{
|
|
public:
|
|
TestUnusedVar() : TestFixture("TestUnusedVar")
|
|
{ }
|
|
|
|
private:
|
|
void check(const char code[])
|
|
{
|
|
// Tokenize..
|
|
Tokenizer tokenizer;
|
|
std::istringstream istr(code);
|
|
tokenizer.tokenize(istr, "test.cpp");
|
|
|
|
// Clear the error buffer..
|
|
errout.str("");
|
|
|
|
// Check for unused variables..
|
|
Settings settings;
|
|
CheckOther checkOther(&tokenizer, &settings, this);
|
|
checkOther.checkStructMemberUsage();
|
|
}
|
|
|
|
void run()
|
|
{
|
|
TEST_CASE(structmember1);
|
|
TEST_CASE(structmember2);
|
|
TEST_CASE(structmember3);
|
|
TEST_CASE(structmember4);
|
|
TEST_CASE(structmember5);
|
|
TEST_CASE(structmember6);
|
|
}
|
|
|
|
void structmember1()
|
|
{
|
|
check("struct abc\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" int b;\n"
|
|
" int c;\n"
|
|
"};\n");
|
|
ASSERT_EQUALS(std::string("[test.cpp:3]: (style) struct or union member 'abc::a' is never used\n"
|
|
"[test.cpp:4]: (style) struct or union member 'abc::b' is never used\n"
|
|
"[test.cpp:5]: (style) struct or union member 'abc::c' is never used\n"), errout.str());
|
|
}
|
|
|
|
void structmember2()
|
|
{
|
|
check("struct ABC\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" int b;\n"
|
|
" int c;\n"
|
|
"};\n"
|
|
"\n"
|
|
"void foo()\n"
|
|
"{\n"
|
|
" struct ABC abc;\n"
|
|
" int a = abc.a;\n"
|
|
" int b = abc.b;\n"
|
|
" int c = abc.c;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void structmember3()
|
|
{
|
|
check("struct ABC\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" int b;\n"
|
|
" int c;\n"
|
|
"};\n"
|
|
"\n"
|
|
"static struct ABC abc[] = { {1, 2, 3} };\n"
|
|
"\n"
|
|
"void foo()\n"
|
|
"{\n"
|
|
" int a = abc[0].a;\n"
|
|
" int b = abc[0].b;\n"
|
|
" int c = abc[0].c;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
|
|
void structmember4()
|
|
{
|
|
check("struct ABC\n"
|
|
"{\n"
|
|
" const int a;\n"
|
|
"};\n"
|
|
"\n"
|
|
"void foo()\n"
|
|
"{\n"
|
|
" ABC abc;\n"
|
|
" if (abc.a == 2);\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
|
|
void structmember5()
|
|
{
|
|
check("struct AB\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" int b;\n"
|
|
" void reset()\n"
|
|
" {\n"
|
|
" a = 1;\n"
|
|
" b = 2;\n"
|
|
" }\n"
|
|
"};\n"
|
|
"\n"
|
|
"void foo()\n"
|
|
"{\n"
|
|
" struct AB ab;\n"
|
|
" ab.reset();\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
|
|
void structmember6()
|
|
{
|
|
check("struct AB\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" int b;\n"
|
|
"};\n"
|
|
"\n"
|
|
"void foo(char *buf)\n"
|
|
"{\n"
|
|
" struct AB *ab = (struct AB *)&buf[10];\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("struct AB\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" int b;\n"
|
|
"};\n"
|
|
"\n"
|
|
"void foo(char *buf)\n"
|
|
"{\n"
|
|
" struct AB *ab = (AB *)&buf[10];\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
};
|
|
|
|
REGISTER_TEST(TestUnusedVar)
|
|
|
|
|