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https://issues.apache.org/jira/browse/COMMONSSITE-186?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shan Jiang closed COMMONSSITE-186.
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Resolution: Invalid
> apache/commons-codec — BaseNCodecOutputStream.close() not idempotent
> --------------------------------------------------------------------
>
> Key: COMMONSSITE-186
> URL: https://issues.apache.org/jira/browse/COMMONSSITE-186
> Project: Apache Commons All
> Issue Type: Bug
> Reporter: Shan Jiang
> Priority: Major
>
> `BaseNCodecOutputStream.close()` throws on second call — violates Closeable
> idempotency contract
>
> ### Summary
> `BaseNCodecOutputStream.close()` is not idempotent: the second call attempts
> to flush to an already-closed underlying stream, throwing `IOException`. The
> `Closeable` contract (JDK 21 Javadoc) states: "If the stream is already
> closed then invoking this method has no effect."
> ### How this was found
> Detected by automated JDK conformance oracle (`checkCloseIdempotent`).
> ---
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