Hi, I've submitted a PR that adds support for logical types to C SDK: https://github.com/apache/avro/pull/843
This was a while ago, and apparently the PR is stuck because of lack of reviewers. I kindly ask any C programmers who are users / contributors to https://github.com/apache/avro <https://github.com/apache/avro/pull/843> to review the PR. Thanks! Michael
