Backport: 8216549: Mismatched unsafe access to non escaping object fails

[Hohensee, Paul]

The code in library_call.cpp comes seems to come from two patches

https://bugs.openjdk.java.net/browse/JDK-8160360
http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/4be0cada20ad

and

https://bugs.openjdk.java.net/browse/JDK-8162101
http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/10dad1d40843

I'd backport those first.

Paul

On 10/7/19, 11:31 AM, "jdk8u-dev on behalf of Roman Kennke" <jdk8u-dev-bounces at openjdk.java.net on behalf of rkennke at redhat.com> wrote:

    Ping! This is still awaiting review.
    
    Thanks,
    Roman
    
    
    > This backports:
    > https://bugs.openjdk.java.net/browse/JDK-8216549
    > 
    > Original change:
    > hg.openjdk.java.net/jdk/jdk12/rev/f0490430ef7a
    > 
    > JDK11u backport:
    > http://hg.openjdk.java.net/jdk-updates/jdk11u-dev/rev/d5fb6ad4203b
    > 
    > In order to make it work on 8u, I needed the extra change in
    > library_call.cpp. Thanks Roland who helped with this.
    > 
    > Webrev:
    > http://cr.openjdk.java.net/~rkennke/JDK-8216549-8u/webrev.00/
    > 
    > Testing:
    > The new testcase fails without the fix, and passes with the fix. tier1 &
    > tier2 show no regressions.
    > 
    > Can I please get a review?
    > 
    > Thanks,
    > Roman
    >