RFR: 8368882: NPE during text drawing on machine with JP locale [v2]

[Sergey Nazarkin]

On Mon, 13 Oct 2025 15:09:20 GMT, Sergey Nazarkin <snazarki at openjdk.org> wrote:

>> There is a reproducible bug in symbol rendering on Windows machines with [particular](https://github.com/openjdk/jdk/blob/9d71af108ea2cc3682607527246d60a19fd820ba/src/java.desktop/windows/native/libawt/windows/awt_Win32GraphicsEnv.cpp#L244) default locales. This changeset fixes the deferred font initialisation request, which now skips the last font in the list. 
>> 
>> The test (attached to the jira) was performed on a Windows 11 machine with the Japanese locale set as the default.  Without the fix, it fails with an NPE. With the fix it displays a window showing glyphs drawn by all the fonts accessible from the Java application.
>
> Sergey Nazarkin has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add test

`eudc.reg` is UTF-16 encoded text file

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\EUDC\1252]
"SystemDefaultEUDCFont"="EUDC.TTE"


`EUDC.TTE` is just random generated file, created by `eudcedit.exe`

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PR Comment: https://git.openjdk.org/jdk/pull/27551#issuecomment-3397979809