[GitHub] [arrow] pitrou commented on issue #36311: utf8_slice_codeunits produces invalid unicode sequence

["pitrou (via GitHub)" <gi...@apache.org>]

pitrou commented on issue #36311:
URL: https://github.com/apache/arrow/issues/36311#issuecomment-1609981981

   It gets even better in debug mode:
   ```python
   >>> import pyarrow.compute as pc
   >>> import pyarrow as pa
   >>> 
   >>> pa.compute.utf8_slice_codeunits(f"AB{chr(127917)}C{chr(127917)}ㇱD", start=2, stop=None, step=4)
   /home/antoine/arrow/dev/cpp/src/arrow/compute/kernels/scalar_string_internal.h:109:  Check failed: (output_ncodeunits) <= (max_output_ncodeunits) 
   ```
   
   @rok Would you like to take a look?


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