raulcd commented on issue #47053:
URL: https://github.com/apache/arrow/issues/47053#issuecomment-3108511129
I am not sure about the equality check for case 2, what would be the
expected behavior on case 2 if we are slicing an Array:
```
auto sliced = good_array->Slice(5, 20);
ASSERT_OK(sliced->ValidateFull());
```
Because we are not modifying the run ends on those cases and
`run_ends[run_ends_data->length - 1]` will be greater than `logical_offset +
logical_length` for those.
Extracted from:
https://github.com/apache/arrow/blob/bb33493bd34dcd21d71b6b942203992e67f5ef3c/cpp/src/arrow/array/array_run_end_test.cc#L384-L414
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