Err, sorry, it's actually PyDict_GetItem which is the problem. Basically
if you try to import with a very deep stack, doing PyDict_GetItem on
sys.modules can return NULL (fro copy_reg). That confuses import a lot.
I haven't exactly figured out why those tests cause failure. One of them
probably puts unicode strings in sys.modules.
On Sat, Dec 5, 2015, at 06:28, Barry A. Warsaw wrote:
>
> Barry A. Warsaw added the comment:
>
> On Dec 05, 2015, at 07:03 AM, Benjamin Peterson wrote:
>
> >The underlying issue is classic: PyDict_SetItem returns NULL if the stack is
> >too deep. This confuses import.
>
> Thanks for digging into this Benjamin. I'm not able to investigate
> further
> atm, but could you please explain your analysis in more detail? Where's
> the
> faulty setitem? Where is import getting confused? Why does this (or the
> combination I found before) cause the problem?
>
> ----------
>
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> Python tracker <report@bugs.python.org>
> <http://bugs.python.org/issue25698>
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