IBM JDK crash(Win) with internals

[Aleksey Shipilev]

On 05/14/2015 08:14 AM, Bernd Eckenfels wrote:
> While trying out the new JOL snapshot, I also tried it with some
> (Windows) IBM JDK. And while "footprint java.lang.String" works fine:
> 
>> "\Program Files\Java\ibm_sdk70\bin\java.exe" -jar jol-cli\target\jol-cli.jar footprint java.lang.String
> Running 64-bit Auto-detected VM.
> Using compressed references with 1-bit shift.
> Objects are 3 bytes aligned.

3-byte alignment also seems wrong.

Anyhow, JOL is only supported for OpenJDK-based VMs, and we don't target
to support anything else. It is using a very specific sort of magic to
get the results, which may be not portable across JVMs.

That said, if you can diagnose the issue and it points to a legitimate
JOL bug, we'll gladly fix it.

> ...but perhaps somebody from IBM is lurking here.

Seems unlikely to me.

Thanks,
-Aleksey