[C++-sig] Re: Segfault when calling python method from C++

David Abrahams dave at boost-consulting.com
Mon Jul 28 15:46:31 CEST 2003

Pierre Barbier de Reuille <pierre.barbier at cirad.fr> writes:

> David Abrahams wrote:
>>Hmm, Joel just checked in some support for this.  See
> I didn't know this project. My goal, even if close, is somehow
> different: I want to be able to use the STL containers as if there
> were python list. 

How is that different from what Joel did?

> At best, anybody should be able to export its own container as a
> python list. But it could be a good idea to use what Joel did ...

What you did does not appear to export the container "as a python
list", but as a Python sequence.  Exporting "as a list" would be more
along the lines of the custom rvalue converters described in
http://www.boost.org/libs/python/doc/v2/faq.html#question2, I think.

>>>By the time, it only works with g++-3.2 or later, but it's just a
>>>question of namespace and include locations.  There is a _small_
>>>help at the beginning. The only thing not written is for the
>>>handling of the exceptions: you have to call define_stl_exceptions()
>>>in your module function. The wcc files correspond to your hpp ones
>>>and the hh is here for tiled compilation only.
>>The first thing I'd need in order to evaluate this is some examples
>>and documentation which describe what it does.
> Ok, I join an example of module along with a python test file. You
> just need to execute ths python file to test ...
> For the documentation I'm writing it and I'll send it to you as soon
> as possible.
>>>My main concern about what you said is about the Boost.Python test
>>>suite ... how to document myself about how it works ?
>>I can't understand what you mean.  Can you rephrase?  Testing and
>>documentation are two separate things; I want tests for
>>libs/python/test and documentation for libs/python/doc.
> I just wondered if you had any rule to write test suite. But if the
> kind of test I send you with this mail is ok ...

Actually, I would strongly prefer a test using the same format as all
of the other tests, with doctest or using the unittest module as
polymorphism.py does.

>>Oh, and BTW, the GPL is not Boost-compatible.
> Oh ... I didn't notice that ! By the way, what is the licence of
> Boost.Python ? I don't see any licence ! 

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Dave Abrahams
Boost Consulting

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