[Python-Dev] PyLongObject "safe" changes?

[Cesare Di Mauro]

Hi

I have little knowledge of some Python (3.2) internals on objects' internal
structure handling.

Suppose that I have any PyLongObject object (even internal / shared ones)
and that
- I need to change some or all of its internal values (size, sign, digits)
in a "critical section";
- the critical section is C code only;
- no CPython APIs will be called (all work is on local vars and object's
internal values);
- the object internal structure is completely restored before exiting from
the critical section.

Is it thread / interpreter safe or something dirty can happen?

Cesare
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