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  1. JDK
  2. JDK-8256867

Classes with empty PermittedSubclasses attribute cannot be extended

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Details

    • Bug
    • Status: Resolved
    • P3
    • Resolution: Fixed
    • 16
    • 16
    • hotspot
    • b28

    Description

      Currently, if the number_of_classes field in the PermittedSubclasses attribute is zero then the JVM throws a ClassFormatError exception. Instead, no exception should be thrown and the class cannot be extended.

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          csr for

          CSR - null JDK-8257861 Class::getPermittedSubclasses returns null on non-sealed class or interface

          • P3 - Major loss of function.
          • Closed
          relates to

          Sub-task - The sub-task of the issue JDK-8246777 JVMS changes for Sealed Classes (Second Preview)

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          links to

          Commit Commit openjdk/jdk/d33a689b

          Review Review openjdk/jdk/1675

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              hseigel Harold Seigel (Inactive)
              hseigel Harold Seigel (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: