{"record":{"id":"adaa9a4869c4753d","repo":"Pumpkin-MC/Pumpkin","slug":"expected-u8","errorCode":null,"errorMessage":"expected u8","messagePattern":"expected u8","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"crates/pumpkin-protocol/src/serial/deserializer.rs","lineNumber":280,"sourceCode":"        Ok(Self::Owned(String::read(reader)?))\n    }\n}\n\nimpl<'a> PacketReadSlice<'a> for bool {\n    fn read_slice(buf: &mut &'a [u8]) -> Result<Self, Error> {\n        if buf.is_empty() {\n            return Err(Error::new(ErrorKind::UnexpectedEof, \"expected bool byte\"));\n        }\n        let b = buf[0];\n        *buf = &buf[1..];\n        Ok(b != 0)\n    }\n}\n\nimpl<'a> PacketReadSlice<'a> for u8 {\n    fn read_slice(buf: &mut &'a [u8]) -> Result<Self, Error> {\n        if buf.is_empty() {\n            return Err(Error::new(ErrorKind::UnexpectedEof, \"expected u8\"));\n        }\n        let b = buf[0];\n        *buf = &buf[1..];\n        Ok(b)\n    }\n}\n\nimpl<'a> PacketReadSlice<'a> for i8 {\n    fn read_slice(buf: &mut &'a [u8]) -> Result<Self, Error> {\n        u8::read_slice(buf).map(|b| b as Self)\n    }\n}\n\nimpl<'a> PacketReadSlice<'a> for i16 {\n    fn read_slice(buf: &mut &'a [u8]) -> Result<Self, Error> {\n        if buf.len() < 2 {\n            return Err(Error::new(ErrorKind::UnexpectedEof, \"expected i16\"));\n        }","sourceCodeStart":262,"sourceCodeEnd":298,"githubUrl":"https://github.com/Pumpkin-MC/Pumpkin/blob/8d4639e25a57c15e47448ec327c780d41bbf2356/crates/pumpkin-protocol/src/serial/deserializer.rs#L262-L298","documentation":"Thrown by `PacketReadSlice for u8` when the buffer is empty so no byte remains to read. It is an UnexpectedEof error indicating the slice buffer ran out before this field. Usually points to a truncated packet or a layout mismatch.","triggerScenarios":"u8::read_slice called on a zero-length buffer; the remaining packet payload is shorter than the fields being decoded.","commonSituations":"Truncated network packet; wrong field order relative to the protocol; reusing a buffer that was fully consumed by earlier fields.","solutions":["Verify the buffer length before decoding (buf.len() >= expected fields)","Confirm the packet's total length from the header matches the payload","Check field order against the protocol spec","Reject the truncated packet gracefully"],"exampleFix":"// before\nlet id = u8::read_slice(&mut buf)?;\n// after\nif buf.is_empty() { return Err(PacketError::Truncated); }\nlet id = u8::read_slice(&mut buf)?;","handlingStrategy":"try-catch","validationCode":"if buf.is_empty() { return Err(PacketError::Truncated); }","typeGuard":null,"tryCatchPattern":"let id = u8::read_slice(&mut buf)\n    .map_err(|_| PacketError::Truncated)?;","preventionTips":["Check remaining buffer length against total fields before decoding","Compare packet header length with actual payload size","Guard against fully consumed buffers being reused"],"tags":["protocol","serialization","truncated-packet"],"backgroundTag":"unexpected-eof","analyzedSha":"8d4639e25a57c15e47448ec327c780d41bbf2356","analyzedAt":"2026-09-09T15:32:22.916Z","contentChangedAt":"2026-09-09T15:32:22.916Z","schemaVersion":2},"datasetVersion":"2026-09-17T15:17:12.973Z"}