You are viewing a plain text version of this content. The canonical link for it is here.

Posted to notifications@groovy.apache.org by "Eric Milles (Jira)" <ji...@apache.org> on 2022/12/04 17:33:00 UTC

[jira] [Created] (GROOVY-10861) ListHashMap is not thread-safe

Eric Milles created GROOVY-10861:
------------------------------------

             Summary: ListHashMap is not thread-safe
                 Key: GROOVY-10861
                 URL: https://issues.apache.org/jira/browse/GROOVY-10861
             Project: Groovy
          Issue Type: Bug
            Reporter: Eric Milles


{{org.codehaus.groovy.util.ListHashMap}} is used for AST node metadata.  It is not thread-safe when managing the low-size parallel arrays and size counter.  If a tool is causing insertion and removal of the same node -- one example of this is in {{StaticTypesMethodReferenceExpressionWriter#writeMethodReferenceExpression}} which stuffs some state in a {{MethodNode}} -- in multiple threads the arrays can get out-of-sync.  This resulted in {{NullPointerExceptions}} for me.



--
This message was sent by Atlassian Jira
(v8.20.10#820010)