Message 338458 - Python tracker

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Content 
Using the C-API, the inplace_pow numbermethod is always called with the third argument pointing to an invalid address.

The reason is likely that self.__ipow__ only takes one argument, resulting in a binaryfunc (self, arg), though inplace_pow is a ternaryfunc.
When trying to use the third argument in any way, Python crashes.

The third arg should be nonexistent, NULL or Py_None.