cppcheck/testcharvar.cpp

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#include "tokenize.h"
#include "CommonCheck.h"
#include "CheckOther.h"
#include "testsuite.h"
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#include <sstream>
extern std::ostringstream errout;
extern bool ShowAll;
class TestCharVar : public TestFixture
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{
public:
TestCharVar() : TestFixture("TestCharVar")
{ }
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private:
void run()
{
TEST_CASE( array_index );
TEST_CASE( bitop );
}
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void check( const char code[] )
{
// Tokenize..
tokens = tokens_back = NULL;
std::istringstream istr(code);
TokenizeCode( istr );
// Fill function list
FillFunctionList(0);
// Clear the error buffer..
errout.str("");
// Check for memory leaks..
ShowAll = true;
CheckCharVariable();
}
void array_index()
{
check( "void foo()\n"
"{\n"
" unsigned char ch = 0x80;\n"
" buf[ch] = 0;\n"
"}\n" );
ASSERT_EQUALS( std::string(""), errout.str() );
check( "void foo()\n"
"{\n"
" char ch = 0x80;\n"
" buf[ch] = 0;\n"
"}\n" );
ASSERT_EQUALS( std::string("[test.cpp:4]: Warning - using char variable as array index\n"), errout.str() );
check( "void foo(char ch)\n"
"{\n"
" buf[ch] = 0;\n"
"}\n" );
ASSERT_EQUALS( std::string("[test.cpp:3]: Warning - using char variable as array index\n"), errout.str() );
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}
void bitop()
{
check( "void foo()\n"
"{\n"
" char ch;\n"
" result = a | ch;\n"
"}\n" );
ASSERT_EQUALS( std::string("[test.cpp:4]: Warning - using char variable in bit operation\n"), errout.str() );
}
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};
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REGISTER_TEST( TestCharVar );
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