Re: [Boost-users] Unattended regression tests are blocked byWindowsDialog

From: Olav Kindt (ok_at_[hidden])
Date: 2008-08-13 10:55:34

>>> I have a test case that (due to an error of course) tries to run
code
>>> like this:
>>>

>[snip]

>>>
>>> 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:
>
>I believe the above is just an example. Under Windows, the
dereferencing of 
>the null pointer leads to an access violation which can be handled via
SEH 
>(Structured Exception Handling). MSVC provides a way to translate
strutured 
>exceptions to C++ exceptions, which Boost.Test is supposed to use.

>Regards,
>Johan

If I understand you (and the documentation) correctly - then the
Boost.Test framework should have caught this (Structured Exception), and
just reported the test as failed. Does this mean that the framework is
broken (I'm using 1.33)

Does anyone else have any experience with this - will an upgrade to 1.35
help?

Olav