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IZ80935: JIT-COMPILED METHOD SHOWS INCORRECT BEHAVIOUR WITH -XQUICKSTART

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Error Message: The Apache Harmony method
org/apache/harmony/jndi/internal/parser/RelaxedDnParser.parse
(which is used by the javax/naming/ldap API) can behave
incorrectly or return incorrect result, when it is compiled by
the just-in-time compiler, and when the -Xquickstart option is
in effect. The issue may affect other methods as well.
.
Stack Trace: N/A
.

Local fix

  • This issue can be avoided with the -Xjit:disableGlobalVP option.
Note however this will cause a significant performance
degradation. Removing the -Xquickstart may or may not prevent
the problem completely.

Problem summary

  • The problem is caused by a JIT compiler analysis that had
ignored certain exception paths in the compiled method, leading
to incorrect logic in the resulting code.

Problem conclusion

  • This defect will be fixed in:
6.0.0 SR8
5.0.0 SR12
.
The JIT compiler has been updated to prevent the problem.
.
To obtain the fix:
Install build 20100128 or later

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IZ80935
    • 

  • Reported component name
    JIT
    • 

  • Reported component ID
    620700124
    • 

  • Reported release
    600
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2010-07-26
    • 

  • Closed date
    2010-07-26
    • 

  • Last modified date
    2010-07-26
    • 





    

  • APAR is sysrouted FROM one or more of the following:
    

    • 

  • APAR is sysrouted TO one or more of the following:
    

    
IZ80936
    

    • 



Fix information


    

  • Fixed component name
    JIT
    • 

  • Fixed component ID
    620700124
    • 



Applicable component levels


    

  • R600  PSN
       UP
    • 








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            26 July 2010
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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