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chore: adjudicate 26 bare dead_code allows across five crates (#6187)

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Remove every bare `#[allow(dead_code)]` in io-core, object-capacity, targets, rio, and scanner. Each allow was stripped first and clippy was then asked which ones the compiler actually missed, so the verdicts rest on the diagnostic rather than on inspection.

23 were inert: they sat on `pub fn`s inside `pub mod`s, where `dead_code` does not apply, or on scanner integration-test helpers that the tests in the same file do call.

The remaining 3 are in rio's private `compress_index` module and the code behind them is deleted rather than annotated. `remove_index_headers` is dead and also wrong — after skipping the 4-byte chunk header it matches against `S2_INDEX_TRAILER` where `S2_INDEX_HEADER` sits, so it returns `None` for every well-formed index; rio-v2 carries the correct equivalent that is actually in use. `restore_index_headers` is its unreachable counterpart, likewise duplicated live in rio-v2. `Index::reset` is a private method with no caller.

Refs backlog#1823
This commit is contained in:
Zhengchao An
2026-08-18 12:45:42 +08:00
committed by GitHub
parent a08de9229b
commit deb0edb7cc
5 changed files with 0 additions and 72 deletions
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crates/rio/src/compress_index.rs
-50
View File
@@ -49,7 +49,6 @@ pub struct IndexInfo {
pub uncompressed_offset: i64,
}
#[allow(dead_code)]
impl Index {
pub fn new() -> Self {
Self {
@@ -60,14 +59,6 @@ impl Index {
}
}
#[allow(dead_code)]
fn reset(&mut self, max_block: usize) {
self.est_block_uncomp = max_block as i64;
self.total_compressed = -1;
self.total_uncompressed = -1;
self.info.clear();
}
pub fn len(&self) -> usize {
self.info.len()
}
@@ -511,47 +502,6 @@ fn read_varint(buf: &[u8]) -> io::Result<(i64, usize)> {
Err(io::Error::new(io::ErrorKind::UnexpectedEof, "unexpected EOF"))
}
// Helper functions for index header manipulation
#[allow(dead_code)]
pub fn remove_index_headers(b: &[u8]) -> Option<&[u8]> {
if b.len() < 4 + S2_INDEX_TRAILER.len() {
return None;
}
// Skip size
let b = &b[4..];
// Check trailer
if !b.starts_with(S2_INDEX_TRAILER) {
return None;
}
Some(&b[S2_INDEX_TRAILER.len()..])
}
#[allow(dead_code)]
pub fn restore_index_headers(in_data: &[u8]) -> Vec<u8> {
if in_data.is_empty() {
return Vec::new();
}
let mut b = Vec::with_capacity(4 + S2_INDEX_HEADER.len() + in_data.len() + S2_INDEX_TRAILER.len() + 4);
b.extend_from_slice(&[0x50, 0x2A, 0x4D, 0x18]);
b.extend_from_slice(S2_INDEX_HEADER);
b.extend_from_slice(in_data);
let total_size = (b.len() + 4 + S2_INDEX_TRAILER.len()) as u32;
b.extend_from_slice(&total_size.to_le_bytes());
b.extend_from_slice(S2_INDEX_TRAILER);
let chunk_len = b.len() - 4;
b[1] = chunk_len as u8;
b[2] = (chunk_len >> 8) as u8;
b[3] = (chunk_len >> 16) as u8;
b
}
#[cfg(test)]
mod tests {
use super::*;