felipecrv commented on code in PR #37174:
URL: https://github.com/apache/arrow/pull/37174#discussion_r1300231022
##########
cpp/src/arrow/c/bridge.cc:
##########
@@ -1601,6 +1621,23 @@ struct ArrayImporter {
return Status::OK();
}
+ Status Visit(const RunEndEncodedType& type) {
+ RETURN_NOT_OK(CheckNumChildren(2));
+ if (c_struct_->n_buffers == 1) {
+ // REE arrays are not required to have any buffer,
+ // but an empty validity bitmap buffer is allowed.
+ RETURN_NOT_OK(AllocateArrayData());
Review Comment:
The current implementation itself only works by always having the first
buffer set to null because so much code assumes `buffers[0]` to be checkable.
@bkietz even pinged me about some issues he had when this wasn't respected.
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