IZ94325: JIT COMPILER PRODUCES UNEXPECTED VALUE IN BYTE TO INTEGER CONVER SION

APAR status

• Closed as program error.

Error description

• Error Message: ArrayIndexOutOfBound exception was thrown.
  .
  Stack Trace: java.lang.ArrayIndexOutOfBoundsException
  
   at com.ibm.xml.xci.serializer.XOutputWriter8Bit.write(Unknown
  Source)
   at
  com.ibm.xml.xci.xlxp.cdata.XMLStringCData.write(XMLStringCData.j
  ava:1055)
  
   at com.ibm.xml.xci.serializer.XSerializer.addText(Unknown
  Source)
   at
  com.ibm.xml.xci.serializer.fixer.FixerNamespaces.addText(Unknown
  Source)
  
   at
  com.ibm.xml.xci.serializer.fixer.FixerRequiredPrefixes.addText(U
  nknown Source)
  
   at
  com.ibm.xml.xci.dp.base.AbstractDelegatingCursor.addText(Unknown
  Source)
  
   at com.ibm.xml.xci.dp.util.copy.Copier.copyNode(Unknown Source)
  
   at
  com.ibm.xml.xci.dp.util.copy.Copier.copySequence2Content(Unknown
  Source)
  
   at com.ibm.xml.xci.dp.util.copy.Copier.copyContents(Unknown
  Source)
   at
  com.ibm.xml.xci.dp.util.copy.Copier.copySequence2Content(Unknown
  Source)
  
   at com.ibm.xml.xci.dp.util.copy.Copier.copyContents(Unknown
  Source)
   at
  com.ibm.xml.xci.dp.util.copy.Copier.copySequence2Content(Unknown
  Source)
  
   at com.ibm.xml.xci.dp.util.copy.Copier.copyContents(Unknown
  Source)
   at
  com.ibm.xml.xci.dp.util.copy.Copier.copySequence2Content(Unknown
  Source)
  
   at com.ibm.xml.xci.dp.util.copy.Copier.copy(Unknown Source)
  
   at com.ibm.xml.xci.dp.util.copy.Copier.copy(Unknown Source)
  
   at com.ibm.xml.xci.dp.util.copy.Copier.copy(Unknown Source)
  .
  

Local fix

• The workaround for this issue is to exclude the method from
  which the incorrect value/exception is being generated from.
  -Xjit:exclude={<method signature>}
  

Problem summary

• The JIT compiler performed an incorrect optimization on a byte
  to integer conversion operation.
  

Problem conclusion

• This defect will be fixed in:
  6.0.0 SR10
  5.0.0 SR12FP5
  .
  The JIT compiler was fixed to correct the behavior that led to
  the incorrect conversion.
  .
  To obtain the fix:
  Install build 20101217 or later
  

Temporary fix

Comments

APAR Information

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

  IZ94324

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

Fix information

• Fixed component name

  JAVA 5 JIT

• Fixed component ID

  620500124

Applicable component levels

• R500 PSN

     UP