RFR: Fix shenandoah jdk9 build on Windows

[Zhengyu Gu]

On 02/27/2018 04:09 AM, Aleksey Shipilev wrote:
> On 02/26/2018 09:22 PM, Zhengyu Gu wrote:
>> Fixed compilation errors on Windows.
>>
>> Webrev: http://cr.openjdk.java.net/~zgu/shenandoah/sh-jdk9-build/webrev.00/
> 
> *) Not very sure this is the right thing to do:
> 
>     50     _next = *const_cast<ShenandoahStrDedupEntry* volatile*>(&next);
> 
> It seems to me that the "volatile" is not need in the original cast, so it is just:
> 
>    50     _next = static_cast<ShenandoahStrDedupEntry* volatile>(next);
> 
> ?
That's what it was, VSC 2015 does not like it:

c:\Users\zhygu\workspace\sh-jdk\src\hotspot\share\gc/shenandoah/shenandoahStrDedupTable.hpp(50) 
: warning C4197: 'ShenandoahStrDedupEntry *volatile ' : top-level 
volatile in cast is ignored

Or we can suppress the warning ...

Thanks,

-Zhengyu

> 
> Otherwise OK.
> 
> -Aleksey
>