Hi, 2016-01-19 11:39 GMT+01:00 Petr Viktorin <encukou@gmail.com>:
Did I miss something obvious, or is it a known issue of the garbage collector on modules?
The default type flags are for objects that don't store references. Since you're creating a mutable container, you need to set Py_TPFLAGS_HAVE_GC. See https://docs.python.org/3/c-api/gcsupport.html for all the details.
Ok, so I missed this important flag :-) Thanks! I had to fight against the C API to fix all my bugs, but now it works well: a guard keeps a strong reference to the global namespace, but objects are still destroyed when the module is unloaded! FYI I updated my PEP 510 patch to track guards with the garbage collector, and my fat project to fix bugs related to GC: - https://bugs.python.org/issue26098 - https://github.com/haypo/fat Victor