[C++-sig] call_method

Brett Calcott brett.calcott at paradise.net.nz
Sat Nov 9 12:59:34 CET 2002

I spoke to soon. It seems that it works *sometimes*. Other times it crashes
and returns with a C++ exception. There seems to be some corruption going on
as I get some strange results.

This is what happens.
I have a base type and a derived type which calls back to python.
I have a vector of base type shared pointers.
In python I put a few python subclassed types into the vector.
I then get them out and try to call the virtual function in them.
The first one I get out works, it actually makes it to the python callback
The next one returns with a C++ runtime exception error
Debugging the code it looks as if the m_self member that is held in the
callback class has been deleted - causing the crash.

I have included the code (which is very grubby). Let me know if you need

Apologies that I can't find this myself. I get lost pretty fast in amongst
the templates and preprocessor stuff.


ps. I tried this with both the project build dll and the bjam one.

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