RFR: 8317368: [JVMCI] SIGSEGV in JVMCIEnv::initialize_installed_code on libgraal [v4]

[Tom Rodriguez]

On Mon, 15 Apr 2024 18:34:36 GMT, Doug Simon <dnsimon at openjdk.org> wrote:

>> Tom Rodriguez has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains five commits:
>> 
>>  - Merge branch 'master' into tkr-nmethod-keep-alive
>>  - Comment updates
>>  - Merge branch 'master' into tkr-nmethod-keep-alive
>>  - Move BarrierSetNMethod call into JVMCINMethodHandle::set_nmethod
>>  - 8317368: [JVMCI] SIGSEGV in JVMCIEnv::initialize_installed_code on libgraal
>
> src/hotspot/share/jvmci/jvmciCodeInstaller.cpp line 822:
> 
>> 820:         BarrierSetNMethod* bs_nm = BarrierSet::barrier_set()->barrier_set_nmethod();
>> 821: 
>> 822:         err_msg msg("");
> 
> delete `err_msg msg("");`

It's necessary to allocate an empty error buffer for use by the verify_barrier code.  Is there some better way to express this?

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PR Review Comment: https://git.openjdk.org/jdk/pull/17714#discussion_r1566291468