Re: RFR: 8323792: ThreadSnapshot::initialize can cause assert in Thread::check_for_dangling_thread_pointer (possibility of dangling Thread pointer) [v8]

[Kevin Walls]

On Mon, 16 Mar 2026 12:46:31 GMT, Zhengyu Gu <z...@openjdk.org> wrote:

>> test/hotspot/jtreg/serviceability/threads/ThreadInfoTest.java line 49:
>> 
>>> 47:     private static final int NUM_THREADS = 2;
>>> 48:     static long [] ids = new long[NUM_THREADS];
>>> 49:     static ThreadInfo [] infos = new ThreadInfo[NUM_THREADS];
>> 
>> Suggestion:
>> 
>>     static long[] ids = new long[NUM_THREADS];
>>     static ThreadInfo[] infos = new ThreadInfo[NUM_THREADS];
>
> This is converted from @kevinjwalls 's test case. @kevinjwalls could you 
> please comment? I am adding you as a contributor.

Yes sure - this a test I came up with that reproduced the problem.
If you synchronize or join your threads, then of course there was no crash.  It 
had to be quite a _bad_ Java program.... 8-)
But I can help tidy it up.

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PR Review Comment: https://git.openjdk.org/jdk/pull/30105#discussion_r2940826031