IssueTracker

What steps will reproduce the problem?
1. Switch to using Java 17
2. Put some library in <gerrit_site>/lib directory, for example MariaDB connector
3. Start init program

What is the expected output?

init program works as expected

What do you see instead?

init program crashes with this error:

fatal: Learn more:
fatal: https://github.com/google/guice/wiki/ERROR_IN_CUSTOM_PROVIDER
fatal: Caused by: InaccessibleObjectException: Unable to make protected void URLClassLoader.addURL(URL) accessible: module java.base does not "opens java.net" to unnamed module @35d019a3
fatal: at java.base/AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)
fatal: at java.base/AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
fatal: at java.base/Method.checkCanSetAccessible(Method.java:199)
fatal: at java.base/Method.setAccessible(Method.java:193)
fatal: at IoUtil.loadJARs(IoUtil.java:83)
fatal: at SiteLibraryLoaderUtil.loadSiteLib(SiteLibraryLoaderUtil.java:38)
[...]
fatal:
fatal: Unable to make protected void java.net.URLClassLoader.addURL(java.net.URL) accessible: module java.base does not "opens java.net" to unnamed module @35d019a3

Please provide any additional information below.

The problem is Strongly Encapsulate JDK Internals: [1].

A similar problem was solved in context of this issue: [2],
in this PR: [3].

Workaround for now is to put this line in <gerrit_site>/etc/gerrit.config:

javaOptions = "--add-opens java.base/java.net=ALL-UNNAMED"

and run init program with

java --add-opens java.base/java.net=ALL-UNNAMED -jar gerrit.war init -d <gerrit_site>

[1] https://openjdk.java.net/jeps/403
[2] https://github.com/LuckPerms/LuckPerms/issues/2853
[3] https://github.com/LuckPerms/LuckPerms/pull/2899