APAR status
Closed as program error.
Error description
Error Message: A SIGSEGV/ABEND is raised when a JIT-compiled Java method attempts to call System.arraycopy with an unusual length or array index. The number has just been incremented from -1 to 0. The problem may also manifest itself as a crash in other locations, or incorrect computation involving a mixture of ints and longs. The problem only affects 64-bit 390, on both z/Linux and z/OS. . Stack Trace: N/A .
Local fix
This issue can be avoided by setting the environment variable TR_NRECORDLGFR=1 before launching the JVM.
Problem summary
The problem is caused when a 32-bit (int) value is sign-extended and assigned to a 64-bit (long) global register, which is later clobbered by an int operation, and then finally used for a long operation again. Under some circumstances, the JIT compiler may optimize away the required sign extension incorrectly.
Problem conclusion
This defect will be fixed in: 6.0.0 SR8 5.0.0 SR12 . The JIT compiler has been updated to correct the optimization. . To obtain the fix: Install build 20100126 or later
Temporary fix
Comments
APAR Information
APAR number
IZ68010
Reported component name
JAVA 5 JIT
Reported component ID
620500124
Reported release
500
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2010-01-16
Closed date
2010-01-26
Last modified date
2010-07-22
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
JAVA 5 JIT
Fixed component ID
620500124
Applicable component levels
R500 PSN
UP
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Document Information
Modified date:
22 July 2010