APAR status
Closed as program error.
Error description
Error Message: N/A . Stack Trace: N/A . This problem can only occur if auto-SIMD is enabled on either the z13 platform or POWER 7 or later platform.
Local fix
-Xjit:disableAutoSIMD Note that this may affect performance.
Problem summary
While trying to vectorize a loop of the form do {...} while (i++ < N) the JIT compiler incorrectly generated code that checks the post-incremented value of i instead of the pre-incremented value. This can cause the loop to execute one extra iteration.
Problem conclusion
The JIT compiler has been updated to skip vectorization of loops that check the pre-increment value of the induction variable. . This APAR will be fixed in the following Java Releases: 8 SR2 (8.0.2.0) . 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
IV78172
Reported component name
JIT
Reported component ID
620700124
Reported release
130
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2015-10-19
Closed date
2015-10-19
Last modified date
2015-10-19
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:
19 October 2015