RFR: 8290866: Apple Color Emoji turns gray after JavaFX version 18

[Phil Race]

On Fri, 24 Feb 2023 19:28:49 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

>> modules/javafx.graphics/src/main/java/com/sun/javafx/font/PrismFontFile.java line 1456:
>> 
>>> 1454:    private boolean isSbixGlyph(int glyphID) {
>>> 1455:        if (sbixStrikes == null) {
>>> 1456:            synchronized (this) {
>> 
>> This looks like a double-checked locking pattern, which is not guaranteed to be thread-safe.
>> 
>> Suggestion: move the `synchronized` before the `if`.
>
> or check for null again after synchronized(this)

It doesn't matter, does it ? In that one in a million case we'd just build
the tables twice.

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PR: https://git.openjdk.org/jfx/pull/1047