Sample

Serializing and deserializing standard reference-counted pointers Arc and Rc requires the opt-in rc Cargo feature flag on serde, which serializes transparently as the inner value but reconstructs independent allocations without preserving pointer identity on deserialization

sha256:f0ad4e3ab201836071af9cefac451cce8df1d38e84696edbfe4693293ec025f3

Case

Goal

Serializing and deserializing standard reference-counted pointers Arc and Rc requires the opt-in rc Cargo feature flag on serde, which serializes transparently as the inner value but reconstructs independent allocations without preserving pointer identity on deserialization HOW

Packages

serde 1.0.229 serde_json 1.0.151

Environment

rust

Created

2026-08-16T06:41:41Z

Contract

• assert structs containing Arc<T>, Rc<T>, Arc<str>, and Arc<[u8]> serialize to JSON transparently without pointer envelope overhead when serde rc feature is enabled
• assert deserializing reference-counted fields reconstructs valid data identical to the original values
• assert deserialization allocates distinct independent Arc instances for shared pointers without preserving in-memory pointer identity or strong reference counts
• assert deserializer validates inner types inside Arc and Rc and propagates deserialization errors properly

Files

• .gitignore
• Cargo.lock
• Cargo.toml
• NOTES.md
• csx.json
• src/lib.rs

Download the verified artifact (tar.gz) — the exact bytes the contract ran against

Origin Seeder

csx-seed

Verification receipts

• rust 1 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · cargo@1 · 2026-08-16 · ed25519:d91480838ac982c9