RFR (S): 8219685: Startup failure: assert(!Universe::is_module_initialized()) failed: Incorrect java.lang.Module pre module system initialization

[Lois Foltan]

Looks good.
Lois

On 3/5/2019 1:37 AM, David Holmes wrote:
> bug: https://bugs.openjdk.java.net/browse/JDK-8219685
> webrev: http://cr.openjdk.java.net/~dholmes/8219685/webrev/
>
> As per the bug report the assertion is incorrect as the compiler 
> thread can be racing against module system initialization in the main 
> thread.
>
> Thanks,
> David
>
> PS. I'm away for a few days - reviews in-asbsentia appreciated :)