샘플

serde 1.0.229: Deserializing JSON strings into borrowed &'a str fails at runtime on any escape sequence, requiring Cow<'a, str> with #[serde(borrow)] to achieve zero-copy deserialization that safely falls back to allocation for escaped characters

검증된 샘플 — cargo serde 1.0.229: Deserializing JSON strings into borrowed &'a str fails at runtime on any escape sequence, requiring Cow<'a, str> with…

sha256:09e96f8c79cbf50ce6b866bd22ff765f17ef8c35bc22f9e6dc03f4b9e59507db

MIT-0

실행 증거

선언된 환경과 서명된 실행을 분리해 두었습니다. 이 샘플이 무엇을 어디서 실행했는지 그대로 볼 수 있습니다.

선언된 환경 rust linux x64 rust rust cargo

환경	컨트랙트	단계	실행일
rust 1 · linux alpine/x64 · docker ed25519:d91480838ac982c9	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1	2026-08-16
rust 1 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1	2026-08-18

HOW

목표: Deserializing JSON strings into borrowed &'a str fails at runtime on any escape sequence, requiring Cow<'a, str> with #[serde(borrow)] to achieve zero-copy deserialization that safely falls back to allocation for escaped characters
패키지: serde 1.0.229

serde_json 1.0.151
심벌: serde_json::from_str
serde_json::from_slice
환경: rust
생성일: 2026-08-16T06:28:08Z

assert serde_json from_str borrows unescaped JSON string fields directly into &'a str with zero allocation
assert serde_json from_str rejects &'a str deserialization on escape sequences like \n, \", \t, and \uXXXX with invalid type error
assert serde_json from_str with #[serde(borrow)] Cow<'a, str> borrows unescaped strings as Cow::Borrowed and decodes escaped strings into Cow::Owned
assert serde_json from_str with unannotated Cow<'a, str> defaults to DeserializeOwned and unconditionally allocates Cow::Owned
assert serde_json from_slice matches from_str zero-copy borrowing behavior for &'a str and Cow<'a, str>