> If a base class is package-private then its subclasses should have the same 
> package name and defining class loader, otherwise `IllegalAccessError` is 
> thrown when linking a subclass. Currently when dumping a static archive 
> separate `URLClassLoader`s are used for each unregistered classes' source. 
> Thus if two unregistered classes, a package-private base class and a sub 
> class, from the same package reside in different sources `IllegalAccessError` 
> will be thrown when linking the sub class. This can be unexpected because the 
> app could have used a single class loader for both classes and thus not have 
> seen the error — see `DifferentSourcesApp.java` from this patch for an 
> example of such app.
> 
> This patch fixes the issue by using a single class loader for all 
> unregistered classes. CDS does not allow classes with the same name making 
> such solution possible.

Timofei Pushkin has updated the pull request incrementally with two additional 
commits since the last revision:

 - Fix indentation
 - Extend ClassFromClasspath test

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/24223/files
  - new: https://git.openjdk.org/jdk/pull/24223/files/903f0f97..d2e51dac

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24223&range=06
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24223&range=05-06

  Stats: 75 lines in 3 files changed: 62 ins; 0 del; 13 mod
  Patch: https://git.openjdk.org/jdk/pull/24223.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24223/head:pull/24223

PR: https://git.openjdk.org/jdk/pull/24223

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