RFR: 8272417: ZGC: fastdebug build crashes when printing ClassLoaderData [v2]

[Stefan Karlsson]

On Fri, 20 Aug 2021 08:05:47 GMT, Tongbao Zhang <github.com+1866174+tbzhang at openjdk.org> wrote:

>> Following test fails on fastdebug build with the options: "-XX:+UseZGC -XX:+VerifyAfterGC -Xlog:gc*=trace". It crashes on the unknown claim value of the ClassLoaderData
>> 
>> public class A {
>>     public static void main(String... args) {
>>         System.gc();
>>     }
>> }
>> 
>> The unknown claim value  of the ClassLoaderData is "ClassLoaderData::_claim_other | ClassLoaderData::_claim_strong" which is introduced by the ZVerifyOopClosure. This patch clears the CLD's claimed marks after the ZGC verification
>
> Tongbao Zhang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   fix the printing code

Looks good. Thanks.

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Marked as reviewed by stefank (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/5107