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  1. JDK
  2. JDK-8219681

Files appended to bootstrap loader not deleted on exit in Windows

    Details

    • Type: Bug
    • Status: Open
    • Priority: P4
    • Resolution: Unresolved
    • Affects Version/s: 11.0.1
    • Fix Version/s: None
    • Component/s: core-svc

      Description

      If a Java agent appends a file to the bootstrap loader using https://docs.oracle.com/javase/10/docs/api/java/lang/instrument/Instrumentation.html#appendToBootstrapClassLoaderSearch(java.util.jar.JarFile), and if the underlying file is marked for deletion using https://docs.oracle.com/javase/7/docs/api/java/io/File.html#deleteOnExit(), the file is not deleted if using Windows.

      The problem is that the JVM is holding a handle to the file when the deletion routine is running what prevents the file from being deleted.

      This is a problem as many Java agents create temporary files to append classes to the bootstrap loader, thus often polluting the temporary folder of Windows.

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            • Assignee:
              Unassigned
              Reporter:
              winterhalter Rafael Winterhalter
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              • Created:
                Updated: