Hi Andreas, I finally managed to create a simple jupyter notebook that reliably crashes the kernel on my mac. It creates NannyEvents in a thread that get collected by the garbage collector. Strangely, when transforming it into a python script, it does not crash anymore.
https://gist.github.com/geggo/d9b4016ff5b77dab262be7b30a98d862 <https://gist.github.com/geggo/d9b4016ff5b77dab262be7b30a98d862> best Gregor > Am 03.10.2018 um 02:07 schrieb Andreas Kloeckner <li...@informa.tiker.net>: > > Gregor Thalhammer <gregor.thalham...@gmail.com> writes: >> The error message reported in the headline stems from clear-instance >> https://github.com/pybind/pybind11/blob/177713fa4ea49c5594b5568279757f22354fa000/include/pybind11/detail/class.h#L324 >> As I understood there an unhandled exception is raised that leads to a >> program exit. On my Mac the crash is actually reported in the main thread, >> on windows in the same Thread that calls clear_instance, some levels further >> down. Could give more details on this tomorrow. >>> >>> I'm still a little lost here. If you could create a minimal example >>> (involving threads) that shows the crash, I think that would drastically >>> increase our odds of figuring out what's going on here. >> Thanks for your help, I am lost too, have little experience in >> debugging compiled code. But I will try to create a simpler >> example. My first attempts already failed to create NannyEvents that >> are collected by the garbage collector. Any advice on how to >> accomplish this step? > > NannyEvents hold a reference to the buffer, so if the buffer is > something that in turn references the event, you should have a cycle. > > Andreas
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