Serde

Introduction

A serde integration is gated behind the "serde" feature flag. It is slower, produces slightly larger output, and (by extension) is not compatible with the native bitcode::{Encode, Decode}.

Unsupported features

bitcode isn't self-describing, so it doesn't support serde features that rely on self-description:

• enum's with #[serde(untagged)] or #[serde(tag = ...)].
• Fields with #[serde(skip_serializing_if = ...)], #[serde(default)], etc.
• Types like serde_json::Value, which internally serialize different types (numbers, arrays, etc.) without a normal enum discriminant.

The serde version of bitcode only supports up to 256 variants per enum.

Compatibility notes

• The serde version omits the flowinfo and scope_id fields of std::net::SocketAddrV6, but the derive version keeps them.
• The serde version supports recursive types, but the derive version (as of version 0.6) does not.