Hello all, The C ABI does not store buffer lengths explicitly, which presents a problem for Utf8View since buffer lengths are not trivially extractable from other data in the array. A potential solution is to store the lengths in an extra buffer after the variadic data buffers. I've adopted this approach in my (currently draft) PR [1] to add c++ library import/export for Utf8VIew, but I thought this warranted raising on the ML in case anyone has a better idea.
Sincerely, Ben Kietzman [1] https://github.com/bkietz/arrow/compare/37710-cxx-impl-string-view..36099-string-view-c-abi#diff-3907fc8e8c9fa4ed7268f6baa5b919e8677fb99947b7384a9f8f001174ab66eaR549
