[ python-Bugs-1498638 ] tp_alloc for subtypes of PyComplex_Type is not called
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Thu Jun 1 06:24:13 CEST 2006
Bugs item #1498638, was opened at 2006-05-31 22:24
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Category: Python Interpreter Core
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Submitted By: Travis Oliphant (teoliphant)
Assigned to: Nobody/Anonymous (nobody)
Summary: tp_alloc for subtypes of PyComplex_Type is not called
Initial Comment:
In the function complex_subtype_from_c_complex in the
file complexobject.c, the allocation routine for the
subtype is not called. This causes memory management
problems if the sub-type does not use the Python memory
manager.
The fix is to make the following change:
{
PyObject *op;
- op = PyType_GenericAlloc(type, 0);
+ op = type->tp_alloc(type, 0);
if (op != NULL)
((PyComplexObject *)op)->cval = cval;
return op;
Attched is an example module and script illustrating
what can go wrong along with a patch.
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