RFR: JDK-8160353: narrowing conversion error is occurred with GCC 6

[Yasumasa Suenaga]

Hi all,

This review request relates to JDK-8160310: HotSpot cannot be built with GCC 6 .

I encountered narrowing conversion error when I compiled OpenJDK 9 with GCC 6
on Fedora 24 x64.
I think these error should be fixed.

I uploaded webrev.
Could you review it?

   http://cr.openjdk.java.net/~ysuenaga/JDK-8160353/webrev.00/


I'm jdk 9 committer, but I cannot access JPRT.
So I need a sponsor.


Thanks,

Yasumasa