IV74035: ILLEGAL INSTRUCTION IN COMPILED METHOD

APAR status

• Closed as program error.

Error description

• Error Message: An Illegal Instruction Exception is raised when
  executing a compiled method which does UTF16 Encoding.
  .
  Stack Trace: N/A
  .
  This problem only affects z Systems hardware generations which
  are older than z196.
  

Local fix

• This issue can be worked around by using the JVM option,
  -Xjit:disableZGryphon
  Note that this can affect performance.
  Alternatively, the problematic method can be excluded from
  compilation using the following JVM option,
  -Xjit:exclude={complete_method_description}
  Note that this can affect performance.
  

Problem summary

• This problem is caused by the JIT compiler selecting an
  instruction on pre-z196 hardware which is only supported on z196
  and later hardware.
  

Problem conclusion

• The JIT compiler has been updated to only generate the
  problematic instruction on z196 or later hardware.
  .
  This APAR will be fixed in the following Java Releases:
   8 SR1 FP10 (8.0.1.10)
  .
  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