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  1. JDK
  2. JDK-8024317

Incorrectly implemented (and unnecessary) double-checked locking in com.sun.tools.javac.code.Types.arraySuperType()

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    • Bug
    • Resolution: Duplicate
    • P4
    • None
    • 7, 8
    • tools

    Description

      The double-checked locking implemented in com.sun.tools.javac.code.Types.arraySuperType is broken.

      Although it could be fixed (by for instance making arraySuperType volatile) the question is if the synchronization is necessary to begin with:

          A) Other parts of javac isn't thread-safe
          B) Instances of Type shouldn't be compared referentially, so returning different objects for different invocations shouldn't be a problem to begin with.

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          duplicates

          Bug - A problem which impairs or prevents the functions of the product. JDK-8263995 Incorrect double-checked locking in Types.arraySuperType()

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

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              Unassigned Unassigned
              alundblad Andreas Lundblad (Inactive)
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                Updated:
                Resolved: