[C++-sig] Can ownership of a wrapped C++ object be transferred between python objects?

[Bruce Lowery]

Part of an API that I'm wrapping goes something like this:

struct A {}; struct B { void insert( A* ); }
where B::add() takes ownership of the pointer passed to it.

However:

a = mod.A()
b = mod.B()
b.add( a )
del a         
del b
# python interpreter crashes 
# later due to memory corruption.

Even binding the lifetime of 'a' to 'b' via with_custodian_and_ward doesn't
prevent the python object 'a' from ultimately trying to delete the object it's
pointing to (right? - I tried anyway and didn't see any improvement).  

Is there a way to accomplish a 'transfer-of-ownership' of a wrapped C++ object?

Bruce Lowery


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