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Do not GC the current active incremental session directory #147821

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Do not GC the current active incremental session directory #147821

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9 changes: 9 additions & 0 deletions compiler/rustc_incremental/src/persist/fs.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -721,11 +721,20 @@ pub(crate) fn garbage_collect_session_directories(sess: &Session) -> io::Result<
}
}

let current_session_directory_name =
session_directory.file_name().expect("session directory is not ..");

// Now garbage collect the valid session directories.
let deletion_candidates =
lock_file_to_session_dir.items().filter_map(|(lock_file_name, directory_name)| {
debug!("garbage_collect_session_directories() - inspecting: {}", directory_name);

if directory_name.as_str() == current_session_directory_name {
// Skip our own session's directory: we know it's not garbage
// because we're using it.
return None;
}

let Ok(timestamp) = extract_timestamp_from_session_dir(directory_name) else {
debug!(
"found session-dir with malformed timestamp: {}",
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