RFR: 8321053: Use ByteArrayInputStream.buf directly when parameter of transferTo() is trusted [v2]

[Brian Burkhalter]

On Thu, 30 Nov 2023 12:34:24 GMT, Sergey Tsypanov <stsypanov at openjdk.org> wrote:

>> Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   8321053: Trust non-FilterOutputStreams in "java." packages
>
> src/java.base/share/classes/java/io/ByteArrayInputStream.java line 211:
> 
>> 209:         if (len > 0) {
>> 210:             byte[] tmp;
>> 211:             if ("java.io".equals(out.getClass().getPackageName()))
> 
> I think we should trust all classes in `java.*` packages, i.e. the check should be
> 
> out.getClass().getPackageName().startsWith("java.")

Change in 176d5165f7d8f3fa4814c9838abb5d18d9f3c338 to use `java.` instead of `java.io`.

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PR Review Comment: https://git.openjdk.org/jdk/pull/16893#discussion_r1411408644