[GitHub] [arrow-rs] ritchie46 commented on issue #20: FFI listarray lead to UB.

[GitBox <gi...@apache.org>]

ritchie46 commented on issue #20:
URL: https://github.com/apache/arrow-rs/issues/20#issuecomment-831391324


   > I have spent my weekend on this problem
   
   Oof, I feel you. Working on this depressed me as well.
   
   > However, for this, we need to figure out a way to share a ref counted owned parent to all child arrays, so that when the last array is deallocated, we can release the parent and all associated child arrays on the same release. Together with this, we must consider all imported child ffi arrays as non-owned (e.g. refs), so that they do not call their own release on drop.
   
   Just thinking aloud here. Does it make sense to have some kind of marker (boolean) to indicate that an array is a child, and then make `Drop` a no-op when that marker is set and thereby eliminating step 3 (I assume that one is called in `drop`)?


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