[Python-Dev] are CObjects inherently unsafe? (original) (raw)

Greg Ewing greg at cosc.canterbury.ac.nz
Sun Dec 7 19:37:06 EST 2003

Guido:

And the docs should be updated to explain the description better (currently at one point the description is called "extra callback data for the destructor function" which seems a rather odd feature).

Indeed! That comment completely misled me about the purpose of the "desc". Ironically, if that sentence simply hadn't been there, I probably would have correctly guessed what the desc was meant for.

Another API suggestion: a function such as

void* PyCObject_AsVoidPtrWithDesc(PyObject* self, void *expected_desc)

which checks the desc and raises an exception if it doesn't match the expected value.

Greg Ewing, Computer Science Dept, +--------------------------------------+ University of Canterbury, | A citizen of NewZealandCorp, a | Christchurch, New Zealand | wholly-owned subsidiary of USA Inc. | greg at cosc.canterbury.ac.nz +--------------------------------------+

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