Flatcc's verify_vector requires that vectors be properly aligned even when the vector is empty. The consumers in https://github.com/google/flatbuffers do not enforce this and moreover the producers will sometimes emit an empty vector which they didn't bother to align.

(Encountered in the context of arrow IPC, which uses flatbuffers to store metadata) A minimal example: https://gist.github.com/bkietz/6150b9aae6d1bea0c85c0527d7fb04d6