guarantee(!UseCompressedStrings) failed: missed java implementation of Compressed Strings

[Vladimir Kozlov]

Currently Compressed Strings are not supported in jdk 7 and I can't say when it will be.

Vladimir

David Holmes wrote:
> David Dabbs said the following on 09/10/10 19:24:
>> When I attempted to use UseCompressedStrings with 7 b109, java crashed 
>> with
>> the following message. I have filed a bug report.
> 
> It's a known issue. I don't think UseCompressedStrings is ready for use 
> yet.
> 
> David Holmes
> 
>>
>> Cheers,
>>
>> David
>>
>>
>> -XX:+AggressiveOpts -XX:-BytecodeVerificationLocal
>> -XX:-BytecodeVerificationRemote -XX:InitialHeapSize=134217728 -XX:Max
>> HeapSize=536870912 -XX:MaxNewSize=43622400 -XX:MaxPermSize=262144000
>> -XX:MaxTenuringThreshold=4 -XX:NewRatio=7 -XX:NewSi
>> ze=21811200 -XX:OldPLABSize=16 -XX:OldSize=65433600
>> -XX:+OptimizeStringConcat -XX:+PrintCommandLineFlags -XX:+PrintFlags
>> Final -XX:+UnlockExperimentalVMOptions -XX:+UseCodeCacheFlushing
>> -XX:+UseCompressedOops -XX:+UseCompressedStrings -XX:+U
>> seConcMarkSweepGC -XX:-UseLargePagesIndividualAllocation -XX:+UseParNewGC
>>
>> #
>> # A fatal error has been detected by the Java Runtime Environment:
>> #
>> #  Internal Error (javaClasses.cpp:2962), pid=4232, tid=4196
>> #  guarantee(!UseCompressedStrings) failed: missed java implementation of
>> Compressed Strings
>> #
>> # JRE version: 7.0
>> # Java VM: Java HotSpot(TM) 64-Bit Server VM (19.0-b06 mixed mode
>> windows-amd64 compressed oops)
>> # An error report file with more information is saved as:
>> # C:\Users\davidd\AppData\Local\Temp\\hs_err_pid4232.log
>> #
>>
>>
>> FWIW, here are the VM args from the command line:
>>
>> -server
>> -ea
>> -Djava.net.preferIPv4Stack=true
>> -Xverify:none
>> -Xms128m
>> -Xmx512m
>> -XX:MaxPermSize=250m
>> -XX:+UnlockExperimentalVMOptions
>> -XX:+AggressiveOpts
>> -XX:+UseCompressedStrings
>> -XX:+UseConcMarkSweepGC
>> -XX:+OptimizeStringConcat
>> -XX:+UseCodeCacheFlushing
>> -XX:+PrintCommandLineFlags
>> -XX:+PrintFlagsFinal
>>
>>