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fix: compress only len check #2233

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Merged
ananas-block merged 2 commits into from
Feb 6, 2026
Merged

fix: compress only len check #2233

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34ac508
fix: compress only len check
ananas-block Feb 4, 2026
7d8aaf0
perf: move len compute out of loop
ananas-block Feb 6, 2026
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5 changes: 5 additions & 0 deletions programs/compressed-token/program/src/compressed_token/transfer2/token_inputs.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,7 @@ pub fn set_input_compressed_accounts<'a>(
) -> Result<[Option<u8>; MAX_COMPRESSIONS], ProgramError> {
// compression_to_input[compression_index] = Some(input_index), None means unset
let mut compression_to_input: [Option<u8>; MAX_COMPRESSIONS] = [None; MAX_COMPRESSIONS];
let compressions_len = inputs.compressions.as_ref().map(|c| c.len()).unwrap_or(0);

for (i, input_data) in inputs.in_token_data.iter().enumerate() {
let input_lamports = if let Some(lamports) = inputs.in_lamports.as_ref() {
Expand Down Expand Up @@ -57,6 +58,10 @@ pub fn set_input_compressed_accounts<'a>(
if idx >= MAX_COMPRESSIONS {
return Err(TokenError::CompressionIndexOutOfBounds.into());
}
// Check compression_index is within actual compressions length
if idx >= compressions_len {
return Err(TokenError::CompressionIndexOutOfBounds.into());
}
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// Check uniqueness - error if compression_index already used
if compression_to_input[idx].is_some() {
return Err(TokenError::DuplicateCompressionIndex.into());
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