Fixes are available
APAR status
Closed as program error.
Error description
Error Message: During a virtual or interface call, the wrong implementation of an abstract or interface method is executed. Possible symptoms are varied: 1) Crash in JIT compiled code or the interpreter 2) Incorrect behaviour of a Java application 3) Unexpected exception 4) Crash in JIT runtime routines 5) Crash in GC Stack Trace: N/A If the JIT compiler aborts the compilation of a method for any reason, there is a small chance that some class meta-data may be left in an inconsistent state. This may lead to errors in subsequent compilations when an optimization requires accurate information about the class hierarchy.
Local fix
The most common reason by far for aborting a compilation is the exhaustion of JIT scratch memory, which is a fixed amount of memory used by the compiler to hold various data structures related to the optimization and code generation for a method being compiled. The probability of encountering the problem can be reduced by increasing the maximum size of the JIT temporary scratch space. For Java 6, this can be done using the following Java command- line option: -Xjit:scratchSpaceLimit=262144 Increasing the maximum scratch space will allow more complex methods to be compiled, and may increase the amount of time spent on compilation during the startup phase of the program. If the problem still occurs after setting the above option, chances are that a compilation is being aborted for some other reason. The following option can be used instead: -Xjit:disableCHOpts This prevents the JIT compiler from using class meta-data for optimizations, so that an aborted compilation does not cause incorrect optimization in subsequent compilations. However, this will cause severe performance degradation.
Problem summary
Possibility of class metadata being left in an inconsistent state after compilation fails due to running out of scratch space.
Problem conclusion
This defect will be fixed in: 6.0.0 SR9 FP3 . The JIT has been modified to reset the relevant class metadata after a failed compilation. . To obtain the fix: Install build 20110612 or later
Temporary fix
Comments
APAR Information
APAR number
IV00707
Reported component name
JIT
Reported component ID
620700124
Reported release
600
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2011-05-24
Closed date
2011-07-31
Last modified date
2012-01-13
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
R600 PSY
UP
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Document Information
Modified date:
27 September 2021