RFR: 8342105: JVM Crash when Jacoco and JFR are active [v2]

[Erik Gahlin]

On Tue, 5 Nov 2024 13:15:56 GMT, Markus Grönlund <mgronlun at openjdk.org> wrote:

>> Greetings,
>> 
>> JFR hooking invocations of deprecated methods have a problem supporting Condy because these involve indirect invocations (via a bootstrap method) and do not have a reified bytecode invocation instruction (which gets support structures in the MDO).
>> 
>> The bytecode for a condy invocation is ldc or fast_aload (when the bytecode is rewritten), and no MDO support structures are added for these.
>> 
>> ConstantPool idx 0x55: ("Condy")
>> 
>> 55 = Dynamic 0:54 // 0:$jacocoData:Ljava/lang/Object;
>> 
>> CONSTANT_Dynamic_info {
>>       u1 tag;
>>       u2 bootstrap_method_attr_index; [0]
>>       u2 name_and_type_index; [54]
>> }
>> 
>> For additional details, please take a look at the JIRA issue. 
>> 
>> Testing: jdk_jfr
>> 
>> Thanks
>> Markus
>
> Markus Grönlund has updated the pull request incrementally with one additional commit since the last revision:
> 
>   add missing default case

Marked as reviewed by egahlin (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/21902#pullrequestreview-2427381283