RFR: 8225329: -XX:+PrintBiasedLockingStatistics causes crash during initia…

[Martin Doerr]

On Sat, 26 Sep 2020 16:23:51 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

>> …lization on Windows platforms
>> 
>> This bug was fixed in 11.0.3-oracle, but also exists in 16:
>> https://bugs.openjdk.java.net/browse/JDK-8225329
>> 
>> VM crashes when built with VS2017, but passes with this trivial fix.
>> 
>> jdk16\bin\java -XX:+UnlockDiagnosticVMOptions -XX:+UseBiasedLocking -XX:+PrintBiasedLockingStatistics -version
>> OpenJDK 64-Bit Server VM warning: Temporarily processing option UseBiasedLocking; support is scheduled for removal in
>> 16.0
>> Seems like we won't need this fix for a long time, but fixes should be done upstream for other backports.
>
> Hi Martin,
> 
> looks reasonable. But I am curious what "fixed in Oracle11" means, Oracle only fixed this in their 11 release? I cannot
> find a fix in 11u, nor an associated commit in the bug report, yet it is marked as fixed.
> ..Thomas

Hi Thomas,
it is only fixed in Oracle's closed source version of JDK11u. I want to backport it to the open source version yet.

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PR: https://git.openjdk.java.net/jdk/pull/372