[8u] 8178870: instrumentation.retransformClasses cause coredump

[serguei.spitsyn at oracle.com]

Hi Zhengyu,

The backport looks good to me.

Thanks,
Serguei


On 8/19/19 12:14, Zhengyu Gu wrote:
>
> I would like to backport this patch to 8u, as it is on Oracle 8u 
> backport list.
>
> The original patch does not apply cleanly.
>
> 1) Missing get_ik() function in jvmtiRedefineClasses.cpp in 8u code 
> base. I imported get_ik() into 8u code base.
> 2) _scratch_classes was declared as Klass** in 8u, but InstanceKlass** 
> in 10. Added casting in 8u code.
> 3) Missing test infrastructure in 8u, converted test to shell script.
>
> Original bug: https://bugs.openjdk.java.net/browse/JDK-8178870
> Original code review: 
> https://mail.openjdk.java.net/pipermail/hotspot-runtime-dev/2017-October/024727.html
>
>
> 8u webrev: http://cr.openjdk.java.net/~zgu/JDK-8178870-8u/webrev.00/
>
> Thanks,
>
> -Zhengyu
>
>
>