[Python-Dev] survey of extension module memory managment

[Neil Schemenauer]

I randomly grabbed a bunch of extension modules by searching the
python.org topic guides and by using Parnassus.  I looked at 20
different packages.  12 of them implemented an extension type.  12 of
them use the memory management API incorrectly and will break if
pymalloc is enabled.   That's worse than I thought.

Here is the comment list of packages with extension types:

DB2-Python-0.991

    Allocates with PyObject_NEW and deallocates with PyMem_DEL

DCOracle-1.3.1b1

    Allocates with PyObject_NEW and deallocates with PyMem_DEL
    
Kinterbasdb

    Allocates with PyObject_NEW and deallocates with PyMem_DEL

MySQL-python-0.3.5

    Allocates with PyObject_NEW and deallocates with PyMem_Free

PyGreSQL-3.3-pre011203

    Allocates with PyObject_NEW and deallocates with PyMem_DEL

avl-2.0

    Allocates with PyObject_NEW and deallocates with PyMem_DEL

crng-1.1

    Allocates with PyObject_NEW and deallocates with PyMem_Free

sybase-0.33

    Allocates with PyObject_NEW and deallocates with PyMem_DEL

pysdl-0.0.7

    Allocates with PyObject_NEW and deallocates with PyMem_DEL

sketch-0.6.13

    Allocates with PyObject_NEW and reallocates with realloc,
    deallocates with free

pyshout-0.0.6

    Allocates with PyObject_NEW and deallocates with PyMem_DEL
    
pwin

    Allocates with PyObject_NEW and deallocates with PyMem_DEL