RFR JDK-8209786: gcc 7.3 compiler errors on zLinux

[Andrew Leonard]

Hi,
We have discovered issues with gcc 7.3 on zLinux, combined with OpenJDK's 
default compiler options has highlighted a couple of native code issues, 
with undefined behaviours:
  - validating loop test array bounds 
  - left shifts of negative values 
I have created bug https://bugs.openjdk.java.net/browse/JDK-8209786
and attached the webrev fix here: 
http://cr.openjdk.java.net/~aleonard/8209786/webrev.00/ 

This has already been discussed and refined on the "s390x-port-dev" 
maillist
and as it was pointed out, it should have been posted here...

I'd like to request a sponsor for this fix please?

Many thanks
Andrew


Andrew Leonard
Java Runtimes Development
IBM Hursley
IBM United Kingdom Ltd
Phone internal: 245913, external: 01962 815913
internet email: andrew_m_leonard at uk.ibm.com 


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