RFR: 8374210: [BACKOUT] Move input validation checks to Java for java.lang.StringCoding intrinsics

[Aleksey Shipilev]

On Tue, 6 Jan 2026 09:57:02 GMT, Volkan Yazici <vyazici at openjdk.org> wrote:

>> src/java.base/share/classes/jdk/internal/access/JavaLangAccess.java line 455:
>> 
>>> 453:      * compatible.
>>> 454:      * <p>
>>> 455:      * <b>WARNING: This method does not perform any bound checks.</b>
>> 
>> These two lines are not in the original commit?
>> 
>> https://github.com/openjdk/jdk/commit/655dc516c22ac84fccee6b1fdc607c492465be6b#diff-bd92d760986b9249dd3c02cc147db4f7e9dbbef90afef4971ee497a50e48c740
>
> In chronological order:
> 
> 1. 8fcfddb2d202 renamed `encodeASCII` to `uncheckedEncodeASCII` and added the `WARNING` clause.
> 2. 655dc516c22a, the commit this PR is reverting, renamed the method back to `encodeASCII` and removed the `WARNING`. This was possible, since `StringCoding::implEncodeAsciiArray` was hardened with necessary checks in the very same commit.

Ah yes, I misread, apologies.

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PR Review Comment: https://git.openjdk.org/jdk/pull/29055#discussion_r2664514651