RFR JDK-8209786: gcc 7.3 compiler errors on zLinux (original) (raw)

Andrew Leonard andrew_m_leonard at uk.ibm.com
Thu Aug 30 12🔞40 UTC 2018

Hi Brian, Thanks for taking a look at this, I have just done a rebuild with a new patch with appropriate gcc disable warnings for these libraries: http://cr.openjdk.java.net/~aleonard/8209786/webrev.01/ This works fine, so if you think this is a more favourable approach for these libraries? i'd like to get this merged please. 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

From: Brian Burkhalter <brian.burkhalter at oracle.com> To: Andrew Leonard <andrew_m_leonard at uk.ibm.com> Cc: core-libs-dev at openjdk.java.net Date: 28/08/2018 15:52 Subject: Re: RFR JDK-8209786: gcc 7.3 compiler errors on zLinux

Hi Andrew,

It was suggested that it would be preferable to dial down the compilation settings for the fdlibm code rather than make a source code change. Was this investigated?

Thanks,

Brian

On Aug 28, 2018, at 7:18 AM, Andrew Leonard <andrew_m_leonard at uk.ibm.com> wrote:

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:

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?

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