dougxc / patch-jdk-service

Purpose

This contains a small example of an attempt to build sources for an existing module in the JDK (jdk.internal.vm.compiler) where the build process involves running an processor for an annotation (org.graalvm.compiler.serviceprovider.ServiceProvider) that is defined both on the class path as well as in jdk.internal.vm.compiler. I want only the class path instance to be found by the annotation processor. Currently, it appears to find both copies:

> ./run.sh
TypeElement for org.graalvm.compiler.serviceprovider.ServiceProvider is null
Note: Multiple elements named 'org.graalvm.compiler.serviceprovider.ServiceProvider' in modules 'jdk.internal.vm.compiler, unnamed module' were found by javax.lang.model.util.Elements.getTypeElement.

My thought was that --patch-module=jdk.internal.vm.compiler=service/bin:impl/src would result in ServiceProvider.class under service/bin overriding ServiceProvider.class from jdk.internal.vm.compiler.

Reproducing

export JAVA_HOME=/path/to/jdk11
git clone https://github.com/dougxc/patch-jdk-service.git
cd patch-jdk-service
./run.sh