[lworld] RFR: 8372515: [lworld] Plumb in javac flags for compiling with preview mode [v4]

[David Beaumont]

On Wed, 10 Dec 2025 11:10:45 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

>> src/jdk.compiler/share/classes/com/sun/tools/javac/file/JRTIndex.java line 147:
>> 
>>> 145: 
>>> 146:         synchronized Entry getEntry(RelativeDirectory rd) throws IOException {
>>> 147:             if (isClosed) {
>> 
>> One other example of a new exception, not previously possible. This is rather unavoidable post-closure, and feels like IOException is the appropriate response (as opposed to the IllegalStateException proposed in close()).
>
> I'm not too sure. It seems a case of calling an operation when the object is in a bad state. So, ISE or an assertion error seems also legitimate.

Done (ISE).

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PR Review Comment: https://git.openjdk.org/valhalla/pull/1761#discussion_r2622671431