Dilshod Tadjibaev

CC @laggui @louisfd

@skewballfox, your input is appreciated. Currently this bug is blocking #1915. It seems to be work for mnist.onnx checked in onnx-inference example. I am not sure why this isn't working....

This issue is outdated. Closing it now.

Linking [burn's ticket #235 ](https://github.com/burn-rs/burn/issues/235) which uses tch-rs that may have the same issue. So if we have a solution you can look up too.

@LaurentMazare > @antimora that's very interesting, do you have a small tch example that triggers the UB? I don't think we ever came up with one and it's unclear that...

@nathanielsimard @louisfd, this is only for fusion backend. Any particular difference?

> @antimora Fusion has changed a lot since the issue was openned. We should check if this is fixed. OK. I'll check it.

@ImTheSquid thanks for testing it again.

> What's the reasoning behind ignoring the tests when they don't work? There are other tests that rely on `is_nan` and `contains_nan` working properly, and if they don't work then...

> There is also a drawback when all enum variants have the same fields: there is a lot of duplication in that case, so things like name, inputs, and outputs...