IV73847: INTEGER OBJECT HAS THE WRONG VALUE INSIDE A LOOP

APAR status

• Closed as program error.

Error description

• Error Message: N/A
  .
  Stack Trace: N/A
  .
  The escape analysis optimization incorrectly does not detect
  that an old value held by an Integer object can escape into
  another iteration of a loop under specific conditions.
  

Local fix

• This issue can be worked around by disabling the optimization on
  the specific method using the following option,
  -Xjit:{full/path/of/package/Class.method*}(disableEscapeAnalysis
  )
  Note that this can affect performance.
  

Problem summary

• The problem is caused when the escape analysis optimization does
  not detect that an Integer object can escape a specific loop
  iteration.
  

Problem conclusion

• The JIT compiler has been modified so that the Integer object
  has the correct value in these circumstances.
  .
  This APAR will be fixed in the following Java Releases:
   7 R1 SR3 FP20 (7.1.3.20)
   8 SR2 (8.0.2.0)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  Service Refreshes and Fix Packs can be found at:
   https://www.ibm.com/developerworks/java/jdk/
  

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:

• Fixed component name

  JIT

• Fixed component ID

  620700124

Applicable component levels

• R130 PSY

     UP