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https://issues.apache.org/jira/browse/GROOVY-8373?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18044209#comment-18044209
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ASF GitHub Bot commented on GROOVY-8373:
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blackdrag opened a new pull request, #2352:
URL: https://github.com/apache/groovy/pull/2352
The filterLine method returns a Writable whose writeTo method reads from a
BufferedReader but never closes it, causing the underlying file handle to
remain open and cause resource leaks.
This fix wraps the filtering logic in writeTo within a try-finally block to
ensure the BufferedReader is closed after use.
> File.filterLine leaves hanging Reader
> -------------------------------------
>
> Key: GROOVY-8373
> URL: https://issues.apache.org/jira/browse/GROOVY-8373
> Project: Groovy
> Issue Type: Bug
> Components: groovy-jdk
> Reporter: Tim Yates
> Priority: Trivial
>
> Looks like the default method for {{new File('.').filterLine}} creates a
> {{newReader}} which is never closed, nor is it accessible for the user to
> close it themselves.
> https://github.com/apache/groovy/blob/2d9c467ade68da0e3e73e64c4db7f29d742162f9/src/main/org/codehaus/groovy/runtime/ResourceGroovyMethods.java#L2386
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