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  1. JDK
  2. JDK-8211241

Missing obj equals in TemplateTable::fast_aldc

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 12
    • Fix Version/s: 12
    • Component/s: hotspot
    • Labels:
      None
    • Subcomponent:
    • Resolved In Build:
      b14
    • CPU:
      x86, aarch64
    • OS:
      generic

      Description

      TemplateTable::fast_aldc compares the just-loaded reference with Universe::the_null_sentinel. If it really is that null-sentinel, we may get a false negative (with GCs like Shenandoah that allow both from-space and to-space copies of an object to be around), and thus skip NULL-ing the ref. In other words, it would allow to get the-null-sentinel out into the wild as oop.

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            • Assignee:
              rkennke Roman Kennke
              Reporter:
              rkennke Roman Kennke
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              Dates

              • Created:
                Updated:
                Resolved: