RFR: 8373110: jstack --mixed frames are broken on macOS after JDK-8371194

[Yasumasa Suenaga]

On Mon, 8 Dec 2025 23:47:45 GMT, Chris Plummer <cjplummer at openjdk.org> wrote:

>> @plummercj 
>> 
>>>  there is still an issue on macosx-x64. Stack traces are empty
>> 
>> Does it happen always? or intermittently?
>> 
>>> Before this change you at least got a partial stack followed by the UnsupportedPlatformException.
>> 
>> I'm not sure, but I guess jstack could not unwind frame at some point(s) due to unwind info like DWARF on Linux - jstack might not handle call frame because the symbol could not be resolved.
>
>> Does it happen always? or intermittently?
> 
> Always. Every thread and with every run. All of the thread stack traces just have the one empty frame.

@plummercj Maybe it was fixed in the latest commit on this PR. Could you check again?

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PR Comment: https://git.openjdk.org/jdk/pull/28686#issuecomment-3629736500