> [JDK-8370527](https://bugs.openjdk.org/browse/JDK-8370527)
> 
> [JDK-8316694](https://bugs.openjdk.org/browse/JDK-8316694) introduced an 
> `immutable_data_references_counter` which keeps track of the number of 
> nmethods using the immutable data so it can be shared between relocated 
> nmethods. The old code reads the counter, decrements the counter, and then 
> checks the first read to see if it is zero. Since the check is performed on 
> the initial read it will never be zero which causes immutable data to never 
> be freed.

Chad Rakoczy has updated the pull request incrementally with one additional 
commit since the last revision:

  Add include to fix build issue

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/28008/files
  - new: https://git.openjdk.org/jdk/pull/28008/files/26bdc3ce..6739c4fa

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=28008&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=28008&range=03-04

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/28008.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28008/head:pull/28008

PR: https://git.openjdk.org/jdk/pull/28008

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