<i18n dev> RFR: 8321480: ISO 4217 Amendment 176 Update [v2]

[Naoto Sato]

On Mon, 11 Dec 2023 02:59:02 GMT, Justin Lu <jlu at openjdk.org> wrote:

>> test/jdk/java/util/Currency/ValidateISO4217.java line 181:
>> 
>>> 179:                     // without updating ISO4217Codes
>>> 180:                     String futureCurr = tokens.nextToken();
>>> 181:                     testCurrencies.add(Currency.getInstance(futureCurr));
>> 
>> I'd not add the future currency, and fix it in the code not to add future currency in available currencies.
>
> Updated the Currency build process to disallow any Currencies that are future Currencies. This prevents the future currency, "XCG" from leaking out into `Currency.getAvailableCurrencies()`. (This was only exposed now, since the previous future Currencies were already ones expected to be found in `Currency.getAvailableCurrencies()`. For example, Amendment 174 where HRK was replaced by EUR.
> 
> (Tiers 1-5 clean with this change)

IIUC, this should have happened before, as a currency update like "XXA" -> "XXB" on a future date is pretty usual. I think this issue was simply not discovered by any users till now.

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PR Review Comment: https://git.openjdk.org/jdk/pull/17023#discussion_r1423040892