RFR(XS) 8218029 [TESTBUG] Use -Djava.class.path= to specify empty -cp in CDS tests

[David Holmes]

Hi Ioi,

On 30/01/2019 1:51 pm, Ioi Lam wrote:
> https://bugs.openjdk.java.net/browse/JDK-8218029
> http://cr.openjdk.java.net/~iklam/jdk13/8218029-testbug-empty-classpath.v01/ 
> 
> 
> Please review this simple fix. For portability,
> 
>       "-cp", "\"\"",
> 
> in the JVM command-line is replaced with
> 
>       "-Djava.class.path="

Not sure I see how this works. ProcessTools will add:

-cp <value of java.class.path>

but you are setting java.class.path to be empty so to me that means 
ProcessTools will set

-cp

which is an error? Or does it somehow become

-cp ""

??

And does that mean the actual command-line ends up with:

-cp "" -Djava.library.path=

?

Thanks,
David

> 
> Thanks!
> 
> Ioi
>