a cryptic error on using Java agents in build 144

[Alan Bateman]

On 16/11/2016 17:36, Roman Shevchenko wrote:

> Hi,
>
> in jdk9+144, a program launched in a module path mode with a fairly simple
> Java agent attached fails with a pretty cryptic error message:
>
>      Unexpected error (113) returned by AddToSystemClassLoaderSearch
>      Unable to add /home/sher/Tools/idea/lib/idea_rt.jar to system class
> path - the system class loader does not define the
> appendToClassPathForInstrumentation method or the method failed
>      FATAL ERROR in native method: processing of -javaagent failed
>
> The same agent works just fine in a class path mode; in jdk9+142 it worked
> in both modes.
> Please advice.
>
I think I can explain this but first, are you running with a custom 
system class loader (-Djava.system.class.loader)?

-Alan.