On Wed, 4 Feb 2026 19:31:22 GMT, Jan Lahoda <[email protected]> wrote:

> Please see:
> https://mail.openjdk.org/pipermail/valhalla-dev/2026-February/018513.html
> 
> This is an interaction between how `--release` works, the source launcher's 
> use of `--release` and the (I believe) temporary use of non-public 
> `jdk.internal.vm.annotation.NullRestricted`.
> 
> - the source launcher will use an automatic `--release` parameter for the 
> internal javac run.
> - the `--release` data (mostly) do not contain non-exported, non-public 
> types. There is a handful of exceptions that are needed to keep the semantics 
> correct, like java.lang.AbstractStringBuilder and jdk.internal.event.Event.
> - in bworld, javac will insert a synthetic annotation 
> @jdk.internal.vm.annotation.NullRestricted, and since the annotation is not 
> on the system path, as it is not in the `--release` data, the compilation 
> will fail.
> 
> My understanding is that the use of 
> @jdk.internal.vm.annotation.NullRestricted is temporary/transient. This PR 
> adds a (transient) support for keeping the annotation in ct.sym, only for the 
> current/development JDK version.

I have created a VM-side fix in #2041, we don't need to hack CreateSymbols and 
javac any more.

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PR Comment: https://git.openjdk.org/valhalla/pull/2039#issuecomment-3849920503

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