Re: [Python-Dev] Re: weakref callback vs gc vs threads

[Tim] ...

The most sensitive tests for this stuff are test_gc (with the diffs from my patch on SF), test_weakref, and test_descr.

BTW, use a debug build of Python. Some of the relevant tests set up scenarios so excruciatingly delicate that the only reliable symptom when they fail is triggering a C-level assert (whatever->mro != NULL is most common). In a release build, failure may or may not be visible (it usually is, but sometimes an insane object can hide its insanity temporarily in platform-specific ways).