pytorch

b3e7230e - [symint] Fix SizesAndStridesTest to not use negative sizes/strides

[symint] Fix SizesAndStridesTest to not use negative sizes/strides With SymInt we are using the negative space of `int64_t` in our internal representation. `SizesAndStridesTest` breaks this because it initializes `SizesAndStrides` with negative sizes/strides. This PR fixes that. As an aside: feels like `SizesAndStrides` (and `SymInt`) should really take a uint64_t, but that would be BC-breaking so I don't do it here. Pull Request resolved: https://github.com/pytorch/pytorch/pull/77820 Approved by: https://github.com/ezyang