RFR: 8198492: java/lang/StackWalker/CallerFromMain.java failed timeout.

Alan Bateman Alan.Bateman at oracle.com
Mon Feb 26 11:21:16 UTC 2018

On 25/02/2018 23:51, Claes Redestad wrote:
> Hi,
> the JDK-8198418[1] improvements to lambda bootstrapping meant
> initialization changed around to allow the possibility of a
> bootstrap race, which made it possible to cause a class loading
> deadlock when different threads try to initialize classes like
> SimpleMethodHandle and SpeciesData at the same time.
> Making sure the common ancestor, BoundMethodHandle, is initialized
> using the same means before going into the synchronized block in
> LambdaForm:createFormsFor seems to be enough to ensure this race
> can always be resolved peacefully:
> http://cr.openjdk.java.net/~redestad/8198492/jdk.00/
This looks okay to me to fix the current issue. There are several other 
bugs that look similar and I expect they will go away once you get this 
pushed. It might be useful to move JDK-8198492 to the java.lang.invoke 
subcomponent, and maybe change the summary so that it's clearer for 
anyone looking at in the future.


More information about the core-libs-dev mailing list