Fix Zip::indexed for the 0-dimensional case#862
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bluss merged 1 commit intorust-ndarray:masterfrom Dec 14, 2020
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This commit fixes a panic for 0-dimensional, indexed `Zip` instances which results from an out-of-bounds index in a call to `IndexPtr::stride_offset` in `Zip::inner`. Basically, the "stride" for `IndexPtr` is the axis to update, but for the 0-dimensional case, there are no axes, so `IndexPtr::stride_offset` cannot be called without panicking due to the `self.index[stride]` access. The chosen solution is to add a special check to `Zip::apply_core` for the 0-dimensional case. Another possible solution would be to modify the loop of `Zip::inner` such that an offset would not be performed for an index of zero.
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This commit fixes a panic for 0-dimensional, indexed
Zipinstanceswhich results from an out-of-bounds index in a call to
IndexPtr::stride_offsetinZip::inner. Basically, the "stride" forIndexPtris the axis to update, but for the 0-dimensional case,there are no axes, so
IndexPtr::stride_offsetcannot be calledwithout panicking due to the
self.index[stride]access.The chosen solution is to add a special check to
Zip::apply_coreforthe 0-dimensional case. Another possible solution would be to modify
the loop of
Zip::innersuch that an offset would not be performedfor an index of zero.