RFR: 8284638: store skip buffers in InputStream Object

[Roger Riggs]

On Thu, 14 Apr 2022 04:09:48 GMT, XenoAmess <duke at openjdk.java.net> wrote:

> Why as it already be a unacceptable option for security reason?

A shared (static) buffer would be visible to application controlled subclasses when the `read(buffer, 0, len)` method is called.
The subclass could examine the buffer and see data read from another stream or thread.
The JDK takes care not to allow this kind of exposure.

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PR: https://git.openjdk.java.net/jdk/pull/5872