RFR (XS): 8217765: Internal Error (javaCalls.cpp:61) guarantee(thread->can_call_java()) failed

[Robbin Ehn]

Hi David,

Seems fine, thanks.

/Robbin

On 2019-02-20 01:53, David Holmes wrote:
> Bug: https://bugs.openjdk.java.net/browse/JDK-8217765
> webrev: http://cr.openjdk.java.net/~dholmes/8217765/webrev.13/
> 
> A JDK 11 user hit what should be an "impossible" code path in the new nestmate 
> logic, whereby a compiler thread attempted to load a class and failed because it 
> can't execute Java code. We have not been able to get enough information to 
> determine exactly how this arises so I have simply put together a defensive fix 
> that skips the attempted load if in a thread that can't run Java - the same 
> technique that is already used in another part of the nestmate logic.
> 
> There's no regression test as I cannot determine a way to make this code path 
> execute. But the submitter has tested it with their application and their 
> problem has been resolved.
> 
> Other testing: mach5 tiers 1-3
> 
> Thanks,
> David