APAR status
Closed as program error.
Error description
Error Message: N/A . Stack Trace: N/A . A loop-based array copy which copies entries by traversing the arrays backwards fails to correctly copy the first byte in the source array to the destination array.
Local fix
The issue can be worked around using the -Xjit:disableIdiomRecognition JVM option. Note however that this may impact the overall performance of the program.
Problem summary
The problem is caused when the JIT compiler recognizes a loop-based backward array copy and optimizes it into a fast machine instruction sequence.
Problem conclusion
The JIT compiler has been updated to generate code that correctly copies the first byte from the source array into the destination array. . This APAR will be fixed in the following Java Releases: 7 R1 SR2 (7.1.2.0) . Contact your IBM Product's Service Team for these Service Refreshes and Fix Packs. For those running stand-alone, Java maintenance is available from: https://www.ibm.com/developerworks/java/jdk/
Temporary fix
Comments
APAR Information
APAR number
IV63382
Reported component name
JIT
Reported component ID
620700124
Reported release
130
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2014-08-09
Closed date
2014-08-09
Last modified date
2014-08-18
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
R130 PSY
UP
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Document Information
Modified date:
18 August 2014