viirya commented on a change in pull request #1432:
URL: https://github.com/apache/arrow-rs/pull/1432#discussion_r825483017
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File path: arrow/src/array/array.rs
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@@ -629,7 +629,9 @@ pub unsafe fn make_array_from_raw(
schema: *const ffi::FFI_ArrowSchema,
) -> Result<ArrayRef> {
let array = ffi::ArrowArray::try_from_raw(array, schema)?;
- let data = ArrayData::try_from(array)?;
+ let data = ArrayData::try_from(&array)?;
+ // Avoid dropping the `Box` pointers and trigger the `release` mechanism.
+ let _ = ffi::ArrowArray::into_raw(array);
Review comment:
Since `ArrayData::try_from()` moves `ffi::ArrowArray`, it will drop the
`ArrowArray` and trigger `release` for the structs (as they are just `Box`
pointers now). Users cannot prevent it happened. For example, without this
change, our internal usecase got a SIGSEGV.
So I change it to a borrowed reference to avoid dropping/releasing there.
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