write::BzDecoder: Fix infinite loop on drop when no data is read or written #118
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…ritten If writes to the BzDecoder end before it has been fed the entire stream and the output buffer has already been flushed to the wrapped writer, then the Drop implementation will loop forever. On drop, try_finish() is called, which repeatedly tries to write() until BZ_STREAM_END is returned or an error occurs, but neither scenario happens if there's no input nor output data to process. This commit makes try_finish() return an UnexpectedEof error in this scenario. Signed-off-by: Andrew Gunnerson <[email protected]>
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If writes to the
BzDecoderend before it has been fed the entire stream and the output buffer has already been flushed to the wrapped writer, then theDropimplementation will loop forever. On drop,try_finish()is called, which repeatedly tries towrite()untilBZ_STREAM_ENDis returned or an error occurs, but neither scenario happens if there's no input nor output data to process.This commit makes
try_finish()return anUnexpectedEoferror in this scenario.(Also, really happy to see this library found a new maintainer!)