RFR: 8370176: Mixed mode jhsdb jstack cannot unwind call stack with -Xcomp [v9]

[Yasumasa Suenaga]

On Wed, 29 Oct 2025 01:51:15 GMT, Chris Plummer <cjplummer at openjdk.org> wrote:

>> Yasumasa Suenaga has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   TestJhsdbJstackMixedWithXComp.java should be run on Linux AMD64 only
>
> test/hotspot/jtreg/serviceability/sa/TestJhsdbJstackMixedWithXComp.java line 63:
> 
>> 61:         System.err.println(out.getStderr());
>> 62: 
>> 63:         out.stderrShouldBeEmptyIgnoreDeprecatedWarnings();
> 
> I might want you to change this to stderrShouldBeEmptyIgnoreVMWarnings(). We have issues with our internal testing when using -XX:+UseLargePages that sometimes results in a VM warning on stderr that causes this (and some other tests) to fail. We are still deciding on the best approach to fixing this, but I think the solution is most likely to be switching to stderrShouldBeEmptyIgnoreDeprecatedWarnings(). Hopefully I'll know within the next day.

I updated the test to use `stderrShouldBeEmptyIgnoreVMWarnings()`. @plummercj let me know if I should make more changes.

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PR Review Comment: https://git.openjdk.org/jdk/pull/27885#discussion_r2480178823