RFR(XS): [TEST] add test to verify EnableTrace works

[David Holmes]

Hi,

On 25/08/2018 2:35 AM, Liu, Xin wrote:
> Hi, hotspot-Runtime Developers,
> 
> Could you review this small tests?
> It adds a new test to verify +EnableTracing works for jdk8u.

I don't see any output produced with just "-XX:+EnableTracing -version". ??

  > 
/java/re/jdk/8u172/promoted/latest/binaries/linux-amd64/fastdebug/bin/java 
-XX:+EnableTracing -version
java version "1.8.0_172-fastdebug"
Java(TM) SE Runtime Environment (build 1.8.0_172-fastdebug-b35)
Java HotSpot(TM) 64-Bit Server VM (build 25.172-b35-fastdebug, mixed mode)

Thanks,
David

> BUG:  https://bugs.openjdk.java.net/browse/JDK-8209863
> WEBREV: http://cr.openjdk.java.net/~phh/8209863/webrev.00/
> 
> Thanks,
> -lx
>