APAR status
Closed as program error.
Error description
Error Message: N/A . Stack Trace: N/A. .
Local fix
-Xjit:disableUnsafeFastPath or -Xjit:{full/signature/of/the/problematic/method}(disableUnsafeFa stPath) can be used to work around this issue. The latter one has much smaller performance impact.
Problem summary
The problem is caused by JIT compiled code incorrectly widening a byte value loaded from the backing array of a String. Comparison using the widened value may unexpectedly fail. The wrong widening occurs when String.indexOf and String.lastIndexOf are compiled or inlined.
Problem conclusion
The JIT has been updated to correctly widen the byte value loaded from String's backing array. . This APAR will be fixed in the following Java Releases: 8 SR5 FP27 (8.0.5.27) . 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 number
IJ12097
Reported component name
JIT
Reported component ID
620700124
Reported release
130
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-12-11
Closed date
2018-12-11
Last modified date
2018-12-11
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
JIT
Fixed component ID
620700124
Applicable component levels
[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSC9HBA","label":"Just In Time (JIT) Compiler"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"130","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
11 December 2018