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// $Id: Compiler_Features_13_Test.cpp 91813 2010-09-17 07:52:52Z johnnyw $
/**
* @file
*
* This program checks if the compiler / platform supports the
* standard cast operators template parameters. The motivation for
* this test was a discussion on the development mailing list, and the
* documentation was captured in:
*
* http://bugzilla.dre.vanderbilt.edu/show_bug.cgi?id=3715
*
*/
#include "test_config.h"
#include <stdexcept>
namespace
{
/**
* Helper class for test
*/
struct Base
{
virtual ~Base()
{}
};
/**
* Helper class for test
*/
struct Derived : public Base
{
int value;
};
/**
* Helper class for test
*/
struct Another : public Base
{
int x;
int y;
};
}
int
run_main (int, ACE_TCHAR *[])
{
ACE_START_TEST (ACE_TEXT("Compiler_Features_13_Test"));
// As usual, the exit status from the test is 0 on success, 1 on
// failure
int status = 0;
{
// Make sure const cast works. Compilation is interesting, the
// functionality test here is just to make sure the compiler does
// not optimize things away ...
int x = 5;
int const & y = x;
const_cast<int&>(y) = 3;
if (x != 3)
{
status = 1;
ACE_ERROR((LM_ERROR,
ACE_TEXT("Wrong value after const_cast,")
ACE_TEXT(" expected %d, got %d\n"),
3, x));
}
}
// Make sure dynamic cast through pointers work ...
Derived d;
d.value = 24;
Base * b1 = &d;
Derived * d1 = dynamic_cast<Derived*>(b1);
if (d1 == 0)
{
status = 1;
ACE_ERROR((LM_ERROR,
ACE_TEXT("dynamic_cast returns null, expected value\n")));
}
d1->value = 42;
if (d.value != 42)
{
ACE_ERROR((LM_ERROR,
ACE_TEXT("Wrong value after dynamic_cast, expected %d, got %d\n"),
42, d.value));
}
// Make sure dynamic cast detects invalid casts
Another a;
Base * b2 = &a;
Derived * d2 = dynamic_cast<Derived*>(b2);
if (d2 != 0)
{
status = 1;
ACE_ERROR((LM_ERROR,
ACE_TEXT("dynamic_cast should return null\n")));
}
// Make sure dynamic cast raises an exception
Base & b3 = a;
try
{
(void) dynamic_cast<Derived&>(b3);
status = 1;
ACE_ERROR((LM_ERROR,
ACE_TEXT("dynamic_cast should have raised exception\n")));
}
catch(std::exception const &)
{
}
catch(...)
{
status = 1;
ACE_ERROR((LM_ERROR,
ACE_TEXT("dynamic_cast should have raised std::exception\n")));
}
{
// Just test these compile ...
double x = 42.0;
int y = static_cast<int>(x);
void * z = reinterpret_cast<void*>(y);
if (z == 0)
{
ACE_ERROR((LM_ERROR,
ACE_TEXT("My hack to make sure the code is not ")
ACE_TEXT("optimized away backfired!\n")));
}
}
ACE_END_TEST;
return status;
}
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