IJ47942: LAMBDA EXPRESSIONS MAY TRIGGER AN ILLEGALACCESSERROR WITH SEMERU 17

APAR status

• Closed as program error.

Error description

• Error Message: java.lang.IllegalAccessError: Class
  com/ibm/example/ProblematicClass$$Lambda$56/0x00000000e03b8450
  illegally accessing "private" member of class
  .
  Stack Trace:
  .
  

Local fix

Problem summary

• A defect in OpenJ9 prevents a generated lambda class from
  accessing private members of its host class after the host class
  has been redefined/transformed by an agent.
  The Error will look similar to this:
  java.lang.IllegalAccessError: Class
  com/ibm/example/ProblematicClass$$Lambda$56/0x00000000e03b8450
  illegally accessing "private" member of class
  The stack trace will vary depending on the application code.
  Further information can be found in this Eclipse OpenJ9 pull
  request:
  https://github.com/eclipse-openj9/openj9/pull/17816
  

Problem conclusion

• OpenJ9 has been updated to ensure that lambda classes can access
  private members of their host classes even after the host class
  has been redefined/transformed
  .
  This APAR will be fixed in the following Releases:
  .
  IBM Semeru Runtimes
     17              17.0.9.0
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  maintenance can be found at:
             https://www.ibm.com/support/pages/java-sdk
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  J9 COMMON CODE

• Fixed component ID

  620700127

Applicable component levels