[Swig-devel] [ swig-Bugs-3377012 ] swig builtin class is incompatible with stackless python

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Bugs item #3377012, was opened at 2011-07-25 15:31
Message generated for change (Tracker Item Submitted) made by texnician
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Category: python
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Tang Yaguang (texnician)
Assigned to: Nobody/Anonymous (nobody)
Summary: swig builtin class is incompatible with stackless python

Initial Comment:
The cxx code generated by swig with -builtin option  will not be compiled in stackless python environment.
I have searched through the stackless python source code and found the reason:
In stackless python, the PyHeapTypeObject and PyTypeObject are the same type. In the 'object.h' it defines:
    #define PyHeapTypeObject PyTypeObject

In swig, the builtin object implemented as a PyHeapTypeObject and the object's layout is slighty different with stackless python's PyTypeObject.
so the cxx code can't be compiled. 

Maybe this bug is mainly caused by stackless python, but I think it is more easy to be fixed in swig. 
I will upload a  patch in short a while.

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