Compile Error

[David Holmes]

Max,

On 17/08/2018 11:34 AM, mr rupplin wrote:
> Spot what's the issue here:
> 
> Compiling 4 files for BUILD_JIGSAW_TOOLS
> Error occurred during initialization of VM
> java.lang.NullPointerException
>          at jdk.internal.misc.VM.saveAndRemoveProperties(java.base/VM.java:176)
>          at java.lang.System.initPhase1(java.base/System.java:802)

You are making changes to the core OpenJDK code and we can't see what 
you have done (not that anyone is here to do your debugging for you). 
Your changes have resulted in a NullPointerException whilst setting (or 
removing) some of the initial system properties during early 
initialization of the class libraries.

You need to look at your changes and debug things. I will say that the 
initialization sequence for the system is very fragile and easily 
broken. If you have added new static initialization actions to core 
classes then you may well have violated numerous 
assumptions/expectations of the initialization sequence. You can't use 
arbitrary Java code within the initialization code of core library 
classes because you can get unresolvable circular dependencies.

As others have stated, making changes to core OpenJDK classes is not a 
trivial matter, and you need a certain level of OpenJDK experience and 
expertise to be able to manage it.

David

>>>
> 
> make/Main.gmk:356: recipe for target 'exploded-image-optimize' failed
>