JDK 9 build with GCC 6.1.1

[Kim Barrett]

> On Jun 27, 2016, at 3:40 AM, Andrew Haley <aph at redhat.com> wrote:
> 
> On 27/06/16 00:25, David Holmes wrote:
>> Not sure how the crash relates to the gcc 6.6.1 compilation issues.
> 
> Maybe it's related to -fno-delete-null-pointer-checks and HotSpot's
> habit of dereferencing null pointers.  I made a start on some of these
> issues but ran out of time and enthusiasm.  It'd be great to have a
> campaign to get rid of HotSpot's undefined behaviour.
> 
> Andrew.

I think some of these may be a result of the new build system seeming
to have broken or lost some of the changes from Andrew Hughes:

http://mail.openjdk.java.net/pipermail/build-dev/2016-March/016767.html
https://bugs.openjdk.java.net/browse/JDK-8151841

This might be relevant:
https://bugs.openjdk.java.net/browse/JDK-8157358