On Tue, 28 Nov 2023 19:30:34 GMT, Naoto Sato <na...@openjdk.org> wrote:

>> It is best practice to zero out the underlying buffer after use.
>
> Naoto Sato has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   corrected fromIndex

src/java.base/share/classes/sun/nio/cs/StreamDecoder.java line 293:

> 291: 
> 292:     private void lockedFillZeroToPosition() throws IOException {
> 293:         ensureOpen();

Hello Naoto, is this open check needed? Given that we are just zeroing out 
already read content, would it thus be OK to clear that content to zero even 
after this `Reader` instance has been closed?

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PR Review Comment: https://git.openjdk.org/jdk/pull/16861#discussion_r1410504144

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