Re: [Boost-users] Unattended regression tests are blocked by Windows Dialog

13 Aug 2008

      Olav Kindt wrote:
...
Hi all,
I have searched through some of the previous postings on this list, but 
have not been able to find the solution – so I’ll try here.
I have a test case that (due to an error of course) tries to run code 
like this:
class MyObject
{
public:
virtual void f() {};
};
void MyFailingTestCase()
{
MyObject * a = NULL;
a->f();
}
When running these tests in release mode – the whole process is stopped 
by a windows dialog letting be know that there was a system error 
(Access Violation) and asks the user to click OK/Debug.
I have also tried to pass the –-catch_system_errors=yes, but that did 
not help
I am running 1_33_1 version of the library. 
(libboost_unit_test_framework-vc80-mt-1_33_1.lib)
Does anybody know a way around this problem?
The only reasonable solution is to fix the test. According
to standard C++ the expression "a->f()" using an a with
a null pointer value causes undefined behaviour.
Why don't you use a valid argument? Possible examples are:

void MyFailingTestCase()
{
     MyObject mo;
     MyObject* a = &mo;
     a->f();
}

or

void MyFailingTestCase()
{
     MyObject a;
     a.f();
}

or

void MyFailingTestCase()
{
     std::auto_ptr<MyObject> a(new MyObject());
     a->f();
}

Greetings from Bremen,

Daniel Krügler